Genetic parameters for growth and reproductive traits of Canchim breed

被引：6
|
作者：
Fernandes Borba, Luis Henrique [1 ]
Baldi Rey, Fernando Sebastian [2 ]
Campos da Silva, Luiz Otavio [3 ]
Boligon, Arione Augusti [2 ]
de Alencar, Mauricio Mello [4 ]
机构：
[1] Univ Fed Rio Grande do Norte, Unidade Acad Especializada Ciencias Agr, BR-59280000 Macaiba, RN, Brazil
[2] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, BR-14884900 Jaboticabal, SP, Brazil
[3] Embrapa Gado Corte, BR-79002970 Campo Grande, MS, Brazil
[4] Embrapa Pecuaria Sudeste, Fazenda Canchim, BR-13560970 Sao Carlos, SP, Brazil
来源：
PESQUISA AGROPECUARIA BRASILEIRA | 2011年 / 46卷 / 11期
关键词：
beef cattle; scrotal circumference; age at calving; occurrence of calving; weight; NELLORE CATTLE; BEEF-CATTLE; NELORE CATTLE; SCROTAL CIRCUMFERENCE; CORRELATED RESPONSES; AGE; PREGNANCY; SELECTION; WEIGHT; HERD;
D O I：
10.1590/S0100-204X2011001100020
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
The objective of this work was to estimate genetic parameters for age at first (AFC) and at second (ASC) calvings, penalized age at first (AFC(PEN)) and at second (ASC(PEN)) calvings, and occurrence of calving until 38 months of age (PP38) in Canchim breed, as well as to estimate the genetic correlations between these traits with weight (PE420) of males and females, and scrotal circumference (CE420) measured at 420 days of age. Genetic parameters were estimated by two-trait analyses using the Bayesian inference. The analyses were performed between CE420 and PE420, and the reproductive traits measured in the females. The female reproductive traits should show low response to selection, and changes in the management and environmental conditions improve these traits. Selection for the higher weight at 420 days of age does not change female reproductive traits, while selection to increase scrotal circumference, at the same age, contributes to improve such traits.
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页码：1570 / 1578
页数：9
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