Method for evaluating semen grade of Bashang long-tail breeder cock

Abstract

The invention relates to a method for evaluating the semen grade of Bashang long-tail breeder cocks, the method comprises steps of respectively giving different weighted values according to the influence of sperm motility, sperm collection quantity and sperm concentration on cock breeder value, hen fertilization rate and hereditary characteristics of cocks, and synthesizing the weighted values into a breeder cock semen grade index, namely a breeder cock semen grade index, wherein the breeder cock semen grade index is equal to 58.42*semen collection quantity+78.55*sperm motility+1.48*sperm concentration, and evaluating the reproductive performance of the breeder cock according to the breeder cock semen grade index. Because the breeder cock semen grade index is in strong positive genetic correlation with the semen quality, the quality of the long-tailed breeding cock semen on the dam is judged according to the genetic correlation, selection and retention are judged, the quality of the semen is objectively evaluated, the selection accuracy and operability are improved, the quality of the breeding cock semen can be improved generation by generation according to the selection, the genetic progress of breeder cock selection is accelerated, so that the reproductive performance, the breeding value and the economic benefit of the long-tail chickens on the dam are improved.

Description

technical field [0001] The invention relates to the technical field of poultry breeding, in particular to a method for evaluating the semen grade of Bashang long-tailed chicken breed roosters. Background technique [0002] Bashang long-tail chicken is mainly produced in the Bashang area of ​​northern Hebei Province. It has the characteristics of cold resistance, rough feeding resistance, and strong adaptability. There are two main inspection methods for semen quality of Bashang long-tailed chicken breeder roosters: naked eye observation and microscope inspection. The main indicators of naked eye observation are the color, smell, semen volume and pH of the semen; Rate, density, concentration and deformity rate, etc. The evaluation of rooster semen is only to judge whether the cock can be used as a seed according to the qualitative description of these indicators and the minimum value requirements of the quantitative indicators, or to judge the quality of the rooster semen ac...

AI Technical Summary

Problems solved by technology

The evaluation of the rooster semen is only to judge whether the cock can be used as a seed according to the qualitative description of these indicators and the minimum value requirements of the quantitative indicators, or to judge the quality of the rooster semen according to a certain quantitative index. The operability of quality judgment is not strong, it is either rough or one-sided, and there is no quantitative method to comprehensively compare the quality of different male semen, which seriously affects the selection and further efficient utilization of breeding males

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