CN104082244A - Method for judging hot uncomfortableness of broiler chickens according to resting ethogram time distribution - Google Patents
Method for judging hot uncomfortableness of broiler chickens according to resting ethogram time distribution Download PDFInfo
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Abstract
The invention discloses a method for judging hot uncomfortableness of broiler chickens according to resting ethogram time distribution. The method is used for establishing a model for judging hot uncomfortableness of the broiler chickens to be tested in a laboratory. The method comprises the following steps that (1) when the environment temperature to be evaluated is reached, the broiler chickens are fed for two hours, and each kind of resting behavior time of the broiler chickens to be tested in cages in certain time is detected; (2) the percentage of each resting behavior time is calculated, and a resting ethogram is established, namely, the model for judging hot uncomfortableness of the broiler chickens to be tested in the laboratory is established; (3) the model is utilized for judging or helping to judge the hot uncomfortableness of the broiler chickens to be tested with the feeding condition of comfort temperature as contrast. The experiments of the method show that the resting ethogram of the broiler chickens under hot stimulation for two hours and the changes of time distribution of the resting ethogram can be measured, the hot uncomfortableness of the broiler chickens is judged accordingly, whether the temperature of the environment where the broiler chickens is located is high can be judged in time, and therefore measures can be taken in time to avoid decline of production performance of the broiler chickens due to hot uncomfortableness.
Description
Technical field
The present invention relates to biological technical field, relate in particular to Animal Behavior Science field, be specifically related to a kind of according to the uncomfortable method of rest behavior spectrum time distribution judgement broiler chicken partial heat.
Background technology
The management of broiler chicken thermal environment comfortableness is that modern industry broiler production is requisite.Drylot feeding broiler chicken welfare when thermal comfort zone is the highest, minimum power consumption, and production efficiency is the highest.Heat stress causes meat chicken production performance, premunition and meat to decline.Both at home and abroad extensive use electronic equipment and calculator are precisely controlled in house temperature to reaching optimum economic benefit to broiler production already.Therefore, suitable index and the method thereof of searching comfort evaluation are very important.
Current have physiology, behavior, endocrine indexes and a productivity etc. for what evaluate thermal comfort.The acquisition of physiology and endocrine indexes often needs to arrest, blood sampling etc., makes the reliability decrease of these index reaction environment factor effects.
The acquisition of behavioral indicator does not need directly to contact broiler chicken, the welfare general level of the health of reaction broiler chicken that can be more accurate and visual.
Summary of the invention
Object of the present invention is to provide a kind of method that laboratory judges the uncomfortable model of broiler chicken partial heat to be measured of setting up.
Method provided by the invention,
For following A or B:
Method shown in A comprises the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum;
2) take under comfort temperature raising condition as contrast, obtain every kind of rest time of the act percentage under comfort temperature raising condition;
3) every kind of rest time of the act percentage under environmental temperature raising condition to be evaluated and every kind of rest time of the act percentage under comfort temperature raising condition, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Method shown in B comprises the steps:
After reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior shown in A in method by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
Described total rest behavior shown in B in method is had a rest by cage mural margin and have a rest in other position, and 2 kinds of rest behaviors form.
Another object of the present invention is to provide a kind of judgement or the uncomfortable method of auxiliary judgement broiler chicken partial heat to be measured.
Method provided by the invention, comprises the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum;
2) take under comfort temperature raising condition as contrast, obtain every kind of rest time of the act percentage under comfort temperature raising condition;
3) every kind of rest time of the act percentage under environmental temperature raising condition to be evaluated and every kind of rest time of the act percentage under comfort temperature raising condition, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
4) utilize described model, judgement or auxiliary judgement broiler chicken partial heat to be measured are uncomfortable;
The uncomfortable method of described judgement or auxiliary judgement broiler chicken partial heat to be measured comprises the steps:
Take under comfort temperature condition is contrast, compare described broiler chicken to be measured environmental temperature to be evaluated raise and comfort temperature condition under the rest percentage that is seated, lie prostrate rest percentage and stretching, extension rest percentage;
If meet following 1)-3) whole standards, broiler chicken to be measured in or candidate in the uncomfortable state of partial heat:
1) the be seated time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly lower than the time of having a rest percentage that is seated under raising in comfort temperature;
2) the stretching, extension time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than the stretching, extension time of having a rest percentage under comfort temperature is raised;
3) the lie prostrate time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than lies prostrate time of having a rest percentage under comfort temperature is raised;
If do not meet described 1)-3) whole standards, broiler chicken to be measured not in or candidate not in the uncomfortable state of partial heat.
The 3rd object of the present invention is to provide a kind of judgement or the uncomfortable method of auxiliary judgement broiler chicken partial heat to be measured.
Method provided by the invention, comprises the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum; Be laboratory and judge the uncomfortable model of broiler chicken heat to be measured; Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
2) utilize described model, judgement or auxiliary judgement broiler chicken partial heat to be measured are uncomfortable;
The uncomfortable method of described judgement or auxiliary judgement broiler chicken partial heat to be measured comprises the steps: to compare the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature raising condition to be evaluated and other position time of having a rest percentage;
If the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than other position time of having a rest percentage, broiler chicken to be measured in or candidate in the uncomfortable state of partial heat:
If the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised and other position time of having a rest percentage is without significant difference, broiler chicken to be measured not in or candidate not in the uncomfortable state of partial heat.
In said method, described in reach environmental temperature to be evaluated and be, environmental temperature to be evaluated is started to be set as limit value and rises and be denoted as the 0th hour, and in 30min, reach setting value.
In said method, the time of described raising is 2 weeks;
Described certain hour is 20min.
Above-mentioned comfort temperature is 18-23 ℃, is specially 22 ℃.
The 3rd object of the present invention is a kind of for evaluating broiler chicken partial heat uncomfortable Noninvasive behaviouristics index and application thereof.
The present invention is usingd broiler chicken rest time of the act and is distributed the index as the uncomfortable evaluation of broiler chicken partial heat, can be used for evaluating the impact that variation of ambient temperature causes broiler chicken thermal comfort.
Broiler chicken partial heat is uncomfortable to be referred to that broiler chicken environmental temperature of living in is higher and is uncomfortable to broiler chicken.
Above-mentioned being classified as follows:
According to head and four limbs, put posture classification:
(1) be seated at the bottom of rest elbow joint or chest cage, and head is suspended from neck transfixion or of short durationly slightly swings slowly.
(2) lie prostrate at the bottom of rest elbow joint and chest cage, and head is lain prone on the ground or motionless at the bottom of cage.
(3), at the bottom of stretching, extension rest elbow joint and chest cage, homonymy wing (half exhibition or full exhibition) and a leg stretch out transfixion or only have head to have of short duration slightly swing slowly.
According to the classification of always having a rest in cage spatial location preference:
(1) the total rest when minimum distance of cage mural margin rest health and cage wall is no more than 3cm apart.
(2) the total rest when minimum distance of other position rest health and cage wall is greater than 3cm apart.
The present invention's research shows, broiler chicken rest behavior posture and locus distribution generation marked change when partial heat stimulates 2 hours, i.e. and there is marked change in rest behavior spectrum; 26 ℃ of partial heats stimulate and within 2 weeks, cause broiler chicken daily ingestion amount, daily gain significantly to decline, and the result of variations that when this stimulates 2 hours with partial heat, broiler chicken rest behavior posture and locus distribute is consistent.The variation of 2 weeks productivitys of broiler chicken can be reliably reacted in the variation of the variation rest behavior spectrum that when therefore partial heat stimulates 2 hours, broiler chicken rest behavior posture and locus distribute, and is also that partial heat stimulation causes the uncomfortable productivity causing of broiler chicken partial heat to decline.
Of the present invention experimental results show that, the invention provides a kind of Noninvasive and judge the uncomfortable method of broiler chicken partial heat, can measure partial heat stimulates the variation of broiler chicken rest behavior in 2 hours spectrum and time distribution thereof, according to it, judge that broiler chicken partial heat is uncomfortable, whether higherly can evaluate early the residing environment of broiler chicken, thereby take some countermeasures in time to avoid causing because partial heat is uncomfortable the decline of meat chicken production performance.The inventive method can provide technical basis for effectively implementing real-time monitoring of computer drylot feeding broiler chicken thermally comfortable environment, for the raising of the welfare improvement of drylot feeding broiler chicken and productivity and benefit provides safeguard.
Embodiment
The experimental technique using in following embodiment if no special instructions, is conventional method.
In following embodiment, material used, reagent etc., if no special instructions, all can obtain from commercial channels.
Embodiment 1, modeling
1, behavior definition
According to head and four limbs, put posture classification:
(1) be seated at the bottom of rest elbow joint or chest cage, and head is suspended from neck transfixion or of short durationly slightly swings slowly.
(2) lie prostrate at the bottom of rest elbow joint and chest cage, and head is lain prone on the ground or motionless at the bottom of cage.
(3), at the bottom of stretching, extension rest elbow joint and chest cage, homonymy wing (half exhibition or full exhibition) and a leg stretch out transfixion or only have head to have of short duration slightly swing slowly.
According to the classification of always having a rest in cage spatial location preference:
(1) the total rest when minimum distance of cage mural margin rest health and cage wall is no more than 3cm apart.
(2) the total rest when minimum distance of other position rest health and cage wall is greater than 3cm apart.
2, behavior collection
Breeding cage area is 1.36m
2(the wide 0.80m of long 1.70m x), has a support on each cage, a digital infrared video recorder (Model:BN-IPC4-3MD) is installed in support middle, and its ultimate resolution is 1920x1080.Infrared video recorder can freely be adjusted according to the cage bulk area of video recording and the definition of taking test chicken apart from the height at the bottom of cage.In process of the test, all broiler chicken in cage are carried out to omnidistance real-time recording, and by internet, the transmission of video of taking is carved in road machine (NVR, Model:6224k) memory device in order to later stage behavior observation and Data Management Analysis to 24 railway digital hard disks.
3. behavioral data is processed
The time of the act of all categories that adopts target sampling method record to have a rest and compose, Observer XT7.0 software kit (Noldus, 2008) deal with data.The whole process of a data processing only people is observed, and observes a repetition in each processing at every turn, then observes next time.
4, modeling
Modeling method shown in A comprises the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum;
2) take under comfort temperature raising condition as contrast, obtain every kind of rest time of the act percentage under comfort temperature raising condition;
3) every kind of rest time of the act percentage under environmental temperature raising condition to be evaluated and every kind of rest time of the act percentage under comfort temperature raising condition, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Modeling method shown in B comprises the steps:
After reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior shown in A in method by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
Described total rest behavior shown in B in method is had a rest by cage mural margin and have a rest in other position, and 2 kinds of rest behaviors form.
Embodiment 2, judge that broiler chicken partial heat to be measured is uncomfortable
1, test material and animal
At same receptacle, raise 1～21d, 150 of broiler chicken of AA (male and female half and half), the identical daily ration of feeding, first week temperature 32-35 ℃, and temperature reduces 2-3 ℃ weekly.24h illumination, free choice feeding and drinking-water.
Therefrom choose 96 22 age in days healthy AA broiler chicken that body weight is close, male and female half and half, in mean allocation to two environmental control room, each environmental control room is as a processing, in each environmental control room, the putting position of three individual layer breeding cages (the wide 0.80m of long 1.70m x) is identical, each breeding cage is equally divided into two repetitions, each processes 6 repetitions, each repeats 8 chickens (male and female half and half), each selects a cock and a hen in repeating at random, with the biological nontoxic dyestuff of different colours, at its back, make marks, as test objective chicken.22-28 age in days is the environmental adaptation phase, and environmental temperature is 22 ℃, relative moisture 55%-60%, windless condition, free choice feeding and drinking-water.
2, judge the uncomfortable method of broiler chicken partial heat to be measured
29 each environmental control rooms of age in days 8:00 in the morning carry out alternating temperature raising, ambient temperature value to be evaluated is 26 ℃, and comfort temperature value is 22 ℃, and 2 temperature Random assignments are given in two climatic chambers, in 30min, each room temperature reaches desired temperature and is maintained to off-test, and the processing time is 2 weeks.10:00 starts to carry out video capture collection, continuous acquisition 20min, and will gather video storage in NVR.In video acquisition process, without personnel, penetrate environmental control room.Each chamber relative moisture 55%-60%, and windless condition, illumination, stocking density and other envirment factor are controlled and are all met broiler health feeding standard, and above object is got rid of the interference that factor other factors is in addition processed in test.All free choice feeding and drinking-water in process of the test.
A、
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect 12 test objective chickens of each environmental control room every kind of rest time of the act in 20min in cage; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum;
2) take under comfort temperature raising condition as contrast, obtain every kind of rest time of the act percentage under comfort temperature raising condition;
3) every kind of rest time of the act percentage under environmental temperature raising condition to be evaluated and every kind of rest time of the act percentage under comfort temperature raising condition, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
4) utilize described model, judgement or auxiliary judgement broiler chicken partial heat to be measured are uncomfortable; Specific as follows:
Take that to raise under comfort temperature be contrast, compare the be seated rest percentage of broiler chicken to be measured under temperature to be evaluated and comfort temperature raising condition, lie prostrate rest percentage and stretch rest percentage; Adopt SAS to add up method t check in groups and carry out significance test, the significance of every data difference is p < 0.05.
Result is as shown in table 1.
Table 1 is the impact of partial heat stimulation on broiler chicken different gestures rest behavior
Note: the subscript capitalization difference person that goes together in form, represents significant difference (p < 0.05); Contain same letter person, represent difference not remarkable (p > 0.05).
As can be found from Table 1, after test alternating temperature 2h, the broiler chicken rest Behavior Expression of two groups of Temperature Treatment starts to occur to change significantly, and the broiler chicken stretching, extension time of having a rest is stretched the time of having a rest (p=0.0228) while being significantly higher than 22 ℃ in the time of 26 ℃, has improved 2.91%; Broiler chicken is lain prostrate the time of having a rest and is lain prostrate the time of having a rest (p=0.0117) while being significantly higher than 22 ℃ in the time of 26 ℃, has improved 15.69%; Broiler chicken time of having a rest that is seated is seated the time of having a rest (p=0.0070) while being significantly higher than 26 ℃ in the time of 22 ℃, under partial heat stimulates than the remarkable decline 18.6% of control group.Showing that 26 ℃ of partial heats stimulate causes broiler chicken to be lain prostrate time of having a rest and stretch the time of having a rest and significantly improve, and the time of having a rest that is seated significantly reduces, and broiler chicken is in the uncomfortable state of partial heat.
B、
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect 12 test objective chickens of each environmental control room every kind of rest time of the act in 20min in cage; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum; Be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
2) utilize described model, judgement or auxiliary judgement broiler chicken partial heat to be measured are uncomfortable; Specific as follows: to compare the cage mural margin time of having a rest percentage of broiler chicken to be measured under temperature condition to be evaluated and other position time of having a rest percentage;
Result is as shown in table 2.
The impact that table 2 is had a rest on different spatial distribution broiler chicken for partial heat stimulation
Note: the subscript capitalization difference person that goes together in form, represents significant difference (p < 0.05); Contain same letter person, represent difference not remarkable (p > 0.05).
Table 2 is visible, and in the time of 22 ℃, broiler chicken is at edge time of having a rest and other position time of having a rest difference in cage not significantly (p > 0.05).In the time of 26 ℃, broiler chicken is significantly higher than other position time of having a rest (p=0.0363) in cage in the edge time of having a rest, significantly improves 34.22%.Visible, when environmental temperature is elevated to 26 ℃, broiler chicken significantly prefers at edge and has a rest, and broiler chicken is in the uncomfortable state of partial heat.
3, uncomfortable by productivity checking broiler chicken partial heat
In above-mentioned 2 method, raise to process after 2 weeks and detect every productivity index, the results are shown in Table 3.
Table 3 is the impact of partial heat stimulation on meat chicken production performance
Note: the subscript capitalization difference person that goes together in form, represents significant difference (p < 0.05); Contain same letter person, represent difference not remarkable (p > 0.05).
Analytical table 3 results learn, during two groups of Temperature Treatment of (29-35 age in days) broiler chicken in the 5th week age, there were significant differences (p=0.0148) for average daily ingestion amount.Compare with 22 ℃, in the time of 26 ℃, broiler chicken average daily gain has obvious ascendant trend (p=0.0598).The material anharmonic ratio difference that two temperatures is processed is remarkable (p > 0.05) not.
(36-42 age in days) broiler chicken in the 6th week age average daily ingestion amount in the time of 26 ℃ has been compared obvious ascendant trend (p=0.0799) with 22 ℃.The average daily gain that two temperatures is processed and material anharmonic ratio are without significant difference (p > 0.05).
Test after two weeks (29-42 age in days), all there were significant differences (p=0.0366, p=0.0488) for the average daily ingestion amount of broiler chicken that two temperatures is processed and average daily gain.The material anharmonic ratio difference that two temperatures is processed is remarkable (p > 0.05) not.
The result changing from productivity can find, 26 ℃ of partial heats stimulate and within 2 weeks, cause broiler chicken daily ingestion amount, daily gain significantly to decline; The result of variations that when this stimulates 2 hours with partial heat, broiler chicken rest behavior posture and locus distribute is consistent.
The variation of 2 weeks productivitys of broiler chicken can be reliably reacted in the variation of the variation rest behavior spectrum that when partial heat stimulates 2 hours, broiler chicken rest behavior posture and locus distribute, and is also that partial heat stimulation causes the uncomfortable productivity causing of broiler chicken partial heat to decline.
Above result shows, can judge that whether broiler chicken to be measured is in the uncomfortable state of partial heat by the method for following A or B
A: take under comfort temperature raising condition is contrast, compare described broiler chicken to be measured environmental temperature to be evaluated raise and comfort temperature raising condition under the rest percentage that is seated, lie prostrate rest percentage and stretching, extension rest percentage;
If meet following 1)-3) whole standards, broiler chicken to be measured in or candidate in the uncomfortable state of partial heat:
1) the be seated time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly lower than the time of having a rest percentage that is seated under raising in comfort temperature;
2) the stretching, extension time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than the stretching, extension time of having a rest percentage under comfort temperature is raised;
3) the lie prostrate time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than lies prostrate time of having a rest percentage under comfort temperature is raised;
If do not meet described 1)-3) whole standards, broiler chicken to be measured not in or candidate not in the uncomfortable state of partial heat;
B: step 3) method comprises the steps: to compare the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature raising condition to be evaluated and other position time of having a rest percentage;
If the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than other position time of having a rest percentage, broiler chicken to be measured in or candidate in the uncomfortable state of partial heat:
If the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised and other position time of having a rest percentage is without significant difference, broiler chicken to be measured not in or candidate not in the uncomfortable state of partial heat.
Claims (5)
1. setting up the method that laboratory judges the uncomfortable model of broiler chicken partial heat to be measured, is following A or B:
Method shown in A comprises the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum;
2) take under comfort temperature raising condition as contrast, obtain every kind of rest time of the act percentage under comfort temperature raising condition;
3) every kind of rest time of the act percentage under environmental temperature raising condition to be evaluated and every kind of rest time of the act percentage under comfort temperature raising condition, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Method shown in B comprises the steps:
After reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior shown in A in method by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
Described total rest behavior shown in B in method is had a rest by cage mural margin and have a rest in other position, and 2 kinds of rest behaviors form.
2. judge or the uncomfortable method of auxiliary judgement broiler chicken partial heat to be measured, comprise the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum;
2) take under comfort temperature raising condition as contrast, obtain every kind of rest time of the act percentage under comfort temperature raising condition;
3) every kind of rest time of the act percentage under environmental temperature raising condition to be evaluated and every kind of rest time of the act percentage under comfort temperature raising condition, be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
4) utilize described model, judgement or auxiliary judgement broiler chicken partial heat to be measured are uncomfortable;
The uncomfortable method of described judgement or auxiliary judgement broiler chicken partial heat to be measured comprises the steps:
Take under comfort temperature condition is contrast, compare described broiler chicken to be measured environmental temperature to be evaluated raise and comfort temperature condition under the rest percentage that is seated, lie prostrate rest percentage and stretching, extension rest percentage;
If meet following 1)-3) whole standards, broiler chicken to be measured in or candidate in the uncomfortable state of partial heat:
1) the be seated time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly lower than the time of having a rest percentage that is seated under raising in comfort temperature;
2) the stretching, extension time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than the stretching, extension time of having a rest percentage under comfort temperature is raised;
3) the lie prostrate time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than lies prostrate time of having a rest percentage under comfort temperature is raised;
If do not meet described 1)-3) whole standards, broiler chicken to be measured not in or candidate not in the uncomfortable state of partial heat.
3. judge or the uncomfortable method of auxiliary judgement broiler chicken partial heat to be measured, comprise the steps:
1) after reaching environmental temperature to be evaluated, raise 2 hours, detect broiler chicken to be measured in cage and carry out within a certain period of time every kind of rest time of the act; Calculate described every kind of rest time of the act percentage, build rest behavior spectrum; Be laboratory and judge the uncomfortable model of broiler chicken heat to be measured;
Described every kind of time of having a rest percentage is the percentage that every kind of rest time of the act accounts for total rest time of the act;
Described total rest behavior by the rest that is seated, lying prostrate to have a rest and stretching the 3 kinds of rest behaviors of having a rest forms;
2) utilize described model, judgement or auxiliary judgement broiler chicken partial heat to be measured are uncomfortable;
The uncomfortable method of described judgement or auxiliary judgement broiler chicken heat to be measured comprises the steps: to compare the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature raising condition to be evaluated and other position time of having a rest percentage;
If the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised is significantly higher than other position time of having a rest percentage, broiler chicken to be measured in or candidate in the uncomfortable state of partial heat:
If the cage mural margin time of having a rest percentage of described broiler chicken to be measured under environmental temperature to be evaluated is raised and other position time of having a rest percentage is without significant difference, broiler chicken to be measured not in or candidate not in the uncomfortable state of heat.
4. it is characterized in that according to the method in claim 2 or 3:
Describedly reach environmental temperature to be evaluated and be, environmental temperature to be evaluated is started to be set as limit value and rise and be denoted as the 0th hour, and in 30min, reach setting value.
5. according to arbitrary described method in claim 1-4, it is characterized in that:
Described certain hour is 20min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109006658A (en) * | 2018-06-15 | 2018-12-18 | 中国农业科学院北京畜牧兽医研究所 | One kind based on static images analysis broiler chicken unite ratio determine or the colder uncomfortable method of auxiliary judgement broiler chicken |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109006658A (en) * | 2018-06-15 | 2018-12-18 | 中国农业科学院北京畜牧兽医研究所 | One kind based on static images analysis broiler chicken unite ratio determine or the colder uncomfortable method of auxiliary judgement broiler chicken |
| CN109006658B (en) * | 2018-06-15 | 2021-11-09 | 中国农业科学院北京畜牧兽医研究所 | Method for judging broiler clustering proportion or assisting in judging discomfort of broiler cold based on static picture analysis |
| CN110447597A (en) * | 2019-08-28 | 2019-11-15 | 广西壮族自治区水牛研究所 | A method of evaluation dry milk phase dairy buffalo comfort |
| CN110447597B (en) * | 2019-08-28 | 2021-05-11 | 广西壮族自治区水牛研究所 | Method for evaluating comfort of milk buffalo in dry period |
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| CN104082244B (en) | 2015-12-30 |
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