Estimates of genetic parameters and trends of productive traits in broiler breeder lines under selection

Authors

  • Stela Adami Vayego
  • Nelson José Laurino Dionello
  • Elsio Antonio Pereira de Figueiredo

DOI:

https://doi.org/10.22256/pubvet.v5n29.1191

Keywords:

mixed models, REML, broilers breeder, genetic parameters, genetic trend

Abstract

Estimates of genetic parameters of productive traits in broiler breeder lines were obtained through mixed models methodology. The data analyzed came from the breeding program of EMBRAPA Suínos e Aves. In the sire line (TT): body weight at 42 days of age (P42), age at maturity sexual (IMS) and eggs production at 35 and 64 week of age (P35 and PD64). Estimates of variances and covariances were obtained using the software DFREML, which employs the algorithms DFREML. The herdability estimates obtained were moderate, in the range of 0,21 to 0,37. The genetics correlations were: 0,24 between P42 and IMS; -0,23 between P42 and PD35; and -0,28 between P42 and PD64; -0,42 between IMS and PD35; -0,16 between IMS and PD64.. The study of the genetic trend of the traits indicated that genetic progress has been obtained. 

Published

2015-09-16

Issue

Section

Outros

How to Cite

Estimates of genetic parameters and trends of productive traits in broiler breeder lines under selection. (2015). Pubvet, 5(29). https://doi.org/10.22256/pubvet.v5n29.1191

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