A method for estimating breast muscle meat production in live goose

Abstract

The invention discloses a method for estimating the meat yield of breast muscle in living meat goose. The long diameter of breastbone, the width of breastbone and the thickness of breast muscle of meat goose aged 9 to 11 weeks are respectively measured in vivo, and the weight of unilateral breast muscle is measured after slaughtering, and multiple linear regression is adopted. Fit the above-mentioned 3 trait indexes with the weight of unilateral pectoral muscle, establish a linear regression equation (a, b, c are the regression coefficients of pectoral muscle weight respectively, and d is the correction coefficient), and according to the regression equation, the meat goose can be determined in vivo. The long diameter of the sternum, the width of the sternum and the thickness of the pectoral muscle can accurately estimate the yield of the goose breast muscle. The regression equation established by the invention has a good fitting degree and a high coefficient of determination, which is significantly higher than the current similar research; the acupuncture method replaces the ultrasonic method to measure the thickness of the pectoral muscle, which is simple and easy. It not only overcomes the difficulty of indirectly estimating the yield of breast muscle by only measuring the thickness of breast muscle, but also avoids the defects that ultrasonic measurement requires special equipment and is difficult to accurately grasp. It has a good application prospect in the field of meat goose breeding.

Description

technical field [0001] The invention relates to a method for estimating breast muscle meat yield in living goose, and belongs to the technical field of goose breeding. Background technique [0002] Meat yield is an important economic trait to measure the production performance of meat goose, and it is also an important index in breed breeding. The traditional breeding method for meat production mainly adopts full-sib or half-sib selection, but this method not only needs to slaughter a large number of individuals, but also eliminates some good individuals, often causing certain economic losses and genetic estimation deviations, leading to Inaccurate, slow genetic progression. With the development of in vivo imaging technology, ultrasonic measurement of carcass components using ultrasonic imaging has been widely used in agricultural animals such as pigs, chickens, ducks, and turkeys. Hou Shuisheng et al. studied the meat production performance of Peking ducks using ultrasoni...

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Problems solved by technology

Kleczek et al. and Shen Xiaoxu et al. used ultrasonic method to measure the breast muscle thickness of duck and goose respectively, and established a regression equation about breast muscle weight and breast meat rate. The coefficient of determination is only about 65%, so it is said that only ultrasonic method is used to measure The thickness of the breast muscle of meat goose is difficult to indirectly estimate the output of the breast muscle, and special equipment is required, so it is difficult to accurately grasp the use

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