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Method for improving poultry production efficiency by rapidly evaluating liver weight and liver-to-body ratio

A technology of production efficiency and poultry, applied in the field of poultry breeding, can solve the problems of expensive B-type ultrasonic detector, the inability to directly quantify the weight of the liver, and the poultry's difficulty in accepting security quietly, so as to avoid difficult to grasp accurately and reduce arrest and Baoding stress, the effect of high determination coefficient

Pending Publication Date: 2022-05-06
JIANGSU INST OF POULTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, B-mode ultrasonography in human medicine is the most commonly used method for modern medical imaging diagnosis. It plays an important role in the diagnosis of liver diseases. It can directly detect the width and thickness of the liver, and color Doppler ultrasound can detect the degree of fatty liver; however, there is no way Direct quantification of liver weight
Because the poultry body is rich in hair, the dorsal side of the liver area is covered by thick pectoral muscles and thorax, and the ventral side of the liver area is covered by spines, and it is difficult for poultry to accept security quietly, so it is difficult to accurately grasp the liver status of poultry with B-ultrasound. What's more, the B-type ultrasonic detector is expensive, and it is inconvenient to enter the poultry farm for inspection
Liver weight and liver-to-body ratio are important indicators for evaluating liver health, but there is still a lack of instruments for directly measuring poultry liver weight and liver-to-body ratio in vivo

Method used

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  • Method for improving poultry production efficiency by rapidly evaluating liver weight and liver-to-body ratio
  • Method for improving poultry production efficiency by rapidly evaluating liver weight and liver-to-body ratio
  • Method for improving poultry production efficiency by rapidly evaluating liver weight and liver-to-body ratio

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Establish a regression equation for estimating liver weight in vivo

[0024] (1) Select Rugao yellow chickens as the modeling group, at 4 time points of 18 weeks, 22 weeks, 28 weeks, and 36 weeks, randomly select 12 chickens at each time point, and weigh them; Blood was collected intravenously, anticoagulated, and plasma was collected for testing or frozen at -20°C until use; the weight of the liver was weighed.

[0025] (2) Determining the total cholesterol content in the blood of each sample, the results are shown in Table 1, and then using the curve evaluation regression method to perform curve fitting on the above-mentioned blood biochemical index total cholesterol content and the weight of the liver that has been weighed, and establish a regression equation y=-0.274x 2 +6.942x+19.327 (where R 2 =0.901, x is the content of total cholesterol in individual sample blood, unit is mmol / L), and t test shows that the P values ​​of partial regression coefficients -0.27...

Embodiment 2

[0040] 1. Selection of blood biochemical indicators when establishing a regression equation for liver weight estimation in vivo

[0041](1) Select Rugao yellow chickens as the modeling group, at 4 time points of 18 weeks, 22 weeks, 28 weeks, and 36 weeks, randomly select 12 chickens at each time point, and collect blood through wing veins, Perform anticoagulant treatment, collect plasma directly for testing or freeze at -20°C for later use;

[0042] (2) Determination of ALT (U / L), AST (U / L), total cholesterol (mmol / L), triglyceride (mmol / L) in the blood of each sample, and correlate with liver weight and liver body ratio respectively analysis, linear regression analysis and curve estimation.

[0043] (3) The correlation analysis between ALT and liver weight did not reach significance (correlation coefficient was -0.180, P=0.220), so it was eliminated.

[0044] The correlation analysis between AST and liver weight did not reach significance (correlation coefficient was 0.314,...

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Abstract

The invention provides a method for improving poultry production efficiency by rapidly evaluating liver weight and liver-to-body ratio, which comprises the following steps: (1) acquiring total cholesterol content in blood of a plurality of poultry in a preset poultry species group, and weighing the weight and liver weight of the plurality of poultry in the preset poultry species group through a balance; (2) respectively carrying out curve fitting on the obtained total cholesterol content, the liver weight and the liver-to-body ratio, and establishing a regression equation; (3) obtaining the total cholesterol content of the blood of the poultry to be detected in the preset poultry species group; and (4) obtaining the liver weight and the liver-to-body ratio of the poultry to be detected according to the regression method.

Description

technical field [0001] The invention relates to the technical field of poultry breeding, in particular to a method for improving poultry production efficiency by rapidly evaluating liver weight and liver-to-body ratio. Background technique [0002] Animal liver has the functions of secreting bile, storing glycogen, regulating the metabolism of protein, fat and carbohydrate, as well as detoxification, hematopoiesis and coagulation. Since 95%-98% of poultry's lipid synthesis comes from the liver, the health of the poultry liver is even more important to maintain the body's functions. Under the intensive breeding mode, the liver of poultry will cause subclinical damage due to factors such as recessive infectious diseases, environmental stress, and the replacement of feeding processes, showing symptoms such as swelling, congestion, hemorrhage, fatty degeneration, and amyloidosis. Compared with the normal production state, there are no clear and perceptible clinical symptoms, bu...

Claims

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Application Information

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IPC IPC(8): G01G17/08G01N33/483G06F17/11A01K45/00
CPCG01G17/08G01N33/483G06F17/11A01K45/00
Inventor 胡艳施寿荣沈一茹胡云肖蕴祺邵丹王强张珊陈静龙张安
Owner JIANGSU INST OF POULTRY SCI
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