Breeding And Application Effect Of(Black Feather Department)Guangxi Chicken

The research is to adapt the China's current demand for quality broilers market.Especially the broilers production status of local varieties deployment of Guangxi.Used the Guangxi broilers as material,We didn't introduce a foreign gene to improve the main economic traits of the original material.We have make combining ability test,select the best combination,and industrial development.1.Setting the breeding objectives.Through six generations of breeding locking,the body and the physical characteristics remain the same,and genetic stability.Precocious improved,other major economies genetic stability,66 weeks into the hen egg number is 176.2.Increased selection pressure,the compression rate of seed,has made prominent progress from generation to generation.Through six generations of breeding,C lines from the original Age at the age of 159 days down to the six generations of 154 days,5 days in advance.Although there is no increase at egg weight,but the coefficient of variation of 8.8%from 1 generation dropped 4.0%in 6 generations.43-week-old egg production and increase the number of 66-week-old egg from one generation 90.8 and 166.7 to 100.0 for six generations and 176.2,by 9.2 and 9.5,respectively.The average amount of generation genetic improvement of 10.1%and 5.6%,respectively.3.To estimated the genetic parameters of the main traits of laying lines of C.After analysis of data estimates,Age at heritability C line is 0.3923,0.2754 for the egg weight,body weight at the 0.5220,43 week egg number 0.2120,43 weeks Egg weight is 0.5623,66 weeks egg production is 0.2529.4.In C-based breeding,homogeneous phenotype matching breeding method was executed to breed in the subculture.When weight at 10 weeks of selection,according to the individual weight data and weight data pedigree,discarded the individual which the difference of the body weight is too large and the pedigrees which the coefficient of variation is too large.Combinating the individual selection with family selection method is greatly reduce the frequency of other groups of multiple alleles.Uniformity of strain has been greatly improved and stable coefficient of variation of 10%or less.5.By measuring test with other strains,the mode of Hong Guang black broilers three-line pattern matching has been established.Goods on behalf of the cock 90 days listed,weighing 1763g,feed conversion ratio of 3.12:1,115 days of goods on behalf of the listed average hen weight of 1653g,feed conversion ratio of 3.69:1,the survival rate was 95%.6.Through comprehensive means of promotion,since Hong Guang black broilers pilot test,the "Hong Guang black chicken" pilot application of the new support system has been been carry out in Guangxi Yulin,Nanning,Guilin,Baise,Qinzhou and Beihai and other regions.Placing commercial broilers more than 4600 million into market,and has made a very good social and economic benefits.