Genetic parameters for semen traits in a White Leghorn strain: 2. Correlation with egg production traits

Revista Brasileira de Zootecnia

Rutz, Fernando²  Bongalhardo, Denise Calisto²  Dionello, Nelson José Laurino²  Ledur, Mônica Corrêa¹ 

[1] EMBRAPA;UFPel

关键词: egg production;    egg weight;    genetic correlation;    laying hens;    semen volume;    sperm motility;    spermatozoa concentration     IntroduçãoA ciência da genética quantitativa baseia-se no princípio de que alguns caracteres;    principalmente os de importância comercial;    são afetados pela segregação de vários loci;   

DOI  :  10.1590/S1516-35982000000200011

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- The objective of this study was to estimate the genetic correlation between semen (semen volume, sperm motility and spermatozoa concentration) and egg production traits (partial and total egg production, and egg weight) from a White Leghorn strain. In order to obtain semen traits, 698 DD1 strain roosters developed at CNPSA/EMBRAPA were used. The semen were collected at 24, 26 and 28 wk of age, and, to obtain the egg traits, full sisters (average of two sisters per male) were used. According to the obtained results, for the selection to increase the total egg production (rg = .44±.09) and egg weight (rg = .67±.04), the concentration of spermatozoa could be used, when measured at 24 and 26 wk of age, respectively.

【 授权许可】

CC BY-NC