CN105096233A - Replacement cow weight estimation method - Google Patents
Replacement cow weight estimation method Download PDFInfo
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- CN105096233A CN105096233A CN201510605420.7A CN201510605420A CN105096233A CN 105096233 A CN105096233 A CN 105096233A CN 201510605420 A CN201510605420 A CN 201510605420A CN 105096233 A CN105096233 A CN 105096233A
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Abstract
The invention belongs to the technical field of cow production, and relates to a replacement cow weight estimation method by means of growth performance indicators. The method comprises the steps that chest circumference, abdominal circumference, body straight length and rump length data of a replacement cow are measured, and the estimated weight of the replacement cow is obtained according to a formula. Compared with a convenient method of weighing through a weighbridge, weight is estimated via body straight length, chest circumference, abdominal circumference and rump length so that time is saved, cost is saved and efficiency is enhanced.
Description
Technical field
The invention belongs to Cow product technical field, relate to the method for a kind of growth performance index estimation replacement cattle body weight.
Background technology
China is called replacement cattle by being just born to first time prepartal milk cow, and replacement cattle time span is large, and feeding cost is high, and China generally breeds when replacement cattle body weight reaches 385 kilograms.Before breeding, need to weigh standby milk cow body weight, to determine whether to reach breeding body weight.In the past, people weighed by replacement cattle being caught up with special weighbridge.But replacement cattle natural disposition is timid, easily manic again.The difficulty catching up with weighbridge is very big, even if on catch up with weighbridge after, replacement cattle likes disorderly dynamic, cause weighbridge reading difficulty, the time measuring every ox increases greatly, and special weighbridge cost is high, and every platform market price is all at six or seven thousand yuan, easily damage in moving process, to waste time and energy in a conventional manner and expensive.
Growth performance index is the index relevant to replacement cattle growth performance, by measuring the growth performance index of replacement cattle, can determine whether standby milk cow physically well develops.The growth performance index of replacement cattle comprises: height, body directly length, Body steep length, chest breadth, chest measurement, abdominal circumference, ischium is wide, buttocks is long.
The vertical range of height: from Withers first peak to ground (biltmore stick measurement).
Body is directly long: point of shoulder is to the horizontal range (biltmore stick measurement) of point of the buttocks trailing edge perpendicular line.
Body steep length: point of shoulder is to the distance (tape measure) of point of the buttocks.
Chest breadth: the distance (biltmore stick measurement) of shoulder blade trailing edge chest the widest part.
Chest measurement: the vertical Zhou Jing (tape measure) of shoulder blade relief angle place body body.
Abdominal circumference: the vertical Zhou Jing (tape measure) of belly maximum.
Ischium is wide: the width (biltmore stick measurement) of point of the buttocks outer rim.
Buttocks is long: haunch leading edge is to the air line distance (tape measure) of stern end trailing edge.
Replacement cattle drives in hurdle, Baoding and measures by we, and in hurdle, Baoding, replacement cattle is emotionally stable, and easily measures.Measure instrument (biltmore stick, the tape measure) low price of these growth performance indexs.
Summary of the invention
In order to solve deficiency expensive again by the bothersome effort of body weight of weighbridge mensuration replacement cattle at present, the invention provides a kind of estimating and measuring method of replacement cattle body weight, by measuring the body weight of the relative growth performance index prediction replacement cattle of replacement cattle, saving time, increasing the benefit.
The present invention is by a large amount of test determinations, finding that body weight and growth performance index exist certain correlativity, by measuring growth performance index, the growth performance index that correlativity is higher can be filtered out, by measuring these growth performance indexs, the body weight of prediction replacement cattle.
The estimating and measuring method of a kind of replacement cattle body weight of the present invention, is chest measurement, abdominal circumference, the body directly long and buttocks long data of measuring replacement cattle, substitutes into the Estimated weight that following formula draws this replacement cattle:
Body weight (kg)=-396.547+1.518 × chest measurement (cm)+1.380 × abdominal circumference (cm)+1.126 × body directly grows (cm)+1.161 × buttocks long (cm).
Experiment shows, ABW is very close with prediction body weight, demonstrates the reliability of above-mentioned formula.The present invention, for traditional method of weighing in weighbridge, with the body directly long Estimated weight of length, chest measurement, abdominal circumference and buttocks, saves the time, has saved cost, improve efficiency.
Embodiment
Test site is in Yangzhou University's test agriculture and animal husbandry field, and random selecting 240 replacement cattles, weigh the body weight of replacement cattle, take reading with special weighbridge.Drive in replacement cattle Bao Dinglan, measures that the chest measurement of replacement cattle, abdominal circumference, buttocks are long, body directly long, Body steep length with tape measure, and measure the wide and height of the chest breadth of replacement cattle, ischium with biltmore stick, record data, whole experimental period lasts five months.
By the body weight of 240 oxen obtained, height, body, directly length, Body steep length, chest breadth, ischium wide, chest measurement, abdominal circumference, buttocks long data (totally 2160 data) input in excel form and carry out edit, regretional analysis is carried out by these data input SPSS17.0, perform [Analyze] [Regression] [Linear], [Dependent] frame: body weight, [Independent] frame: height, body directly length, Body steep length, chest measurement, abdominal circumference, chest breadth, ischium is wide, buttocks is long.[Method] frame:, click [statistics], choose [Descriptives] final election item, choose [continue] button, click [ok] button.
Obtain four linear equations:
1. body weight (kg)=-313.061+3.897 × chest measurement (cm) (R
2=0.744, P<0.01)
2. body weight (kg)=-345.549+2.269 × chest measurement (cm)+1.548 × abdominal circumference (cm) (R
2=0.813, P<0.01)
3. body weight (kg)=-405.421+1.701 × chest measurement (cm)+1.366 × abdominal circumference (cm)+1.410 × body directly grows (cm) (R
2=0.846, P value <0.01)
4. body weight (kg)=-396.547+1.518 × chest measurement (cm)+1.380 × abdominal circumference (cm)+1.126* body directly grows long (the cm) (R of (cm)+1.161 × buttocks
2=0.851, P value <0.01)
R
2for related coefficient, related coefficient is larger, and represent that the correlativity between variable is higher, the correlativity namely between body weight and size is larger.
P value is used to the parameter judging test of hypothesis result, and P value is less than 0.01, represents that difference is extremely remarkable, illustrates that linear equation is set up.When P value is all less than 0.01, the correlationship that more can show both body chi and body weight that related coefficient is larger, therefore, we have selected formula below.
Body weight (kg)=-396.547+1.518 × chest measurement (cm)+1.380 × abdominal circumference (cm)+1.126 × body directly grows (cm)+1.161 × buttocks long (cm).In order to verify the reliability of formula, ABW and predictor recast contrast by we.
Table 1 real data and predicted data contrast
| Project | Chest measurement | Abdominal circumference | Body is directly long | Buttocks is long | ABW | Prediction body weight |
| 1 | 160 | 170 | 122 | 44 | 266.5 | 269.4 |
| 2 | 142 | 171 | 116 | 42 | 233.5 | 234.4 |
| 3 | 140 | 167 | 121 | 43 | 231.5 | 232.6 |
| 4 | 148 | 178 | 132 | 42 | 270.5 | 271.1 |
| 5 | 145 | 175 | 126 | 43 | 257.5 | 256.9 |
| 6 | 152 | 183 | 125 | 43 | 277 | 277.4 |
| 7 | 150 | 177 | 128 | 44 | 268 | 270.5 |
By correlation data in table, we find that ABW is very close with prediction body weight, demonstrate the reliability of predictor formula.
Claims (1)
1. an estimating and measuring method for replacement cattle body weight, is characterized in that, measures the chest measurement of replacement cattle, abdominal circumference, body directly long and buttocks long data, substitutes into the Estimated weight that following formula draws this replacement cattle:
Body weight (kg)=-396.547+1.518 × chest measurement (cm)+1.380 × abdominal circumference (cm)+1.126 × body directly grows (cm)+1.161 × buttocks long (cm).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428343A (en) * | 2019-07-24 | 2019-11-08 | 北京中育种猪有限责任公司 | Utilize the method for the body ruler prediction weight of boar |
| CN110530477A (en) * | 2019-09-28 | 2019-12-03 | 四川农业大学 | Replacement gilt weight predictor method |
Citations (3)
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| CN103622699A (en) * | 2013-05-13 | 2014-03-12 | 塔里木大学 | Method for determining weight of horse |
| CN104121976A (en) * | 2014-07-21 | 2014-10-29 | 西藏自治区农牧科学院畜牧兽医研究所 | Method for utilizing body size indexes to estimate body weight of Sibu yak |
| CN204169850U (en) * | 2014-09-30 | 2015-02-25 | 王海利 | The multiple growth traits test set of domestic animal |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103622699A (en) * | 2013-05-13 | 2014-03-12 | 塔里木大学 | Method for determining weight of horse |
| CN104121976A (en) * | 2014-07-21 | 2014-10-29 | 西藏自治区农牧科学院畜牧兽医研究所 | Method for utilizing body size indexes to estimate body weight of Sibu yak |
| CN204169850U (en) * | 2014-09-30 | 2015-02-25 | 王海利 | The multiple growth traits test set of domestic animal |
Non-Patent Citations (2)
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| 李红燕 等: "不同品种种公牛生长发育规律分析", 《中国奶牛》 * |
| 蔺宏凯 等: "新疆褐牛体尺性状指标与体重的主成分分析", 《中国畜牧兽医》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428343A (en) * | 2019-07-24 | 2019-11-08 | 北京中育种猪有限责任公司 | Utilize the method for the body ruler prediction weight of boar |
| CN110530477A (en) * | 2019-09-28 | 2019-12-03 | 四川农业大学 | Replacement gilt weight predictor method |
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Application publication date: 20151125 |
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