Genetic evaluation of weaning weight and udder score in Nellore cattle

被引:4
作者
Vargas de Oliveira, Matheus Henrique [1 ]
de Vasconcelos Silva, Josineudson Augusto, II [2 ]
da Silva Faria, Ricardo Antonio [1 ]
de Paiva, Jose Teodoro [3 ]
Malheiros, Jessica Moraes [4 ]
Cruz dos Santos Correia, Luiz Eduardo [1 ]
Albuquerque, Lucia Galvao [1 ]
Gaya, Leila de Genova [5 ]
机构
[1] Sao Paulo State Univ UNESP, Coll Agr & Vet Sci FCAV, Jaboticabal, SP, Brazil
[2] Sao Paulo State Univ UNESP, Sch Vet Med & Anim Sci FMVZ, Botucatu, SP, Brazil
[3] Fed Univ Vicosa UFV, Vicosa, MG, Brazil
[4] Embrapa Southeast Livestock EMBRAPA, Sao Carlos, SP, Brazil
[5] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, MG, Brazil
关键词
Bayesian inference; Bos taurus indicus; Maternal effect; Selection; Variance components; HEIFER PREGNANCY; TRAITS; GROWTH; BIRTH; ASSOCIATION; PARAMETERS; COMPONENTS; MODELS; CALVES; COWS;
D O I
10.1016/j.livsci.2021.104400
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
The aim of this study was to estimate genetic parameters for weaning weight (WW) and udder score (US) of 186,151 Nellore animals raised in extensive systems. The (co)variance components and estimated breeding values (EBVs) were obtained by two-trait analyses using Bayesian inference. The maternal effect (ME) was expressed as the maternal additive genetic variance of the calf's weaning weight (WW). The direct heritabilities were 0.13 +/- 0.012 and 0.23 +/- 0.012 for WW and US, respectively. The maternal heritability was 0.11 +/- 0.012 for WW. The genetic correlations between WW and US (0.48 +/- 0.053), WW and ME (0.41 +/- 0.067), and US and ME (0.31 +/- 0.041) were positive and moderate. Cows with maternal udder scores (US_M) 3 and 4 showed higher EBVs for ME (2.58 +/- 0.070 and 2.88 +/- 0.214, respectively) and their progeny had higher EBVs for WW (4.58 +/- 0.058 and 5.07 +/- 0.168) and US (0.20 +/- 0.001 and 0.26 +/- 0.005). The genetic trends demonstrate genetic progress in the selection program over the years, with values of 0.19 kg and 0.01 points for WW and US, respectively. The genetic trend in ME was 0.04 kg for WW. In addition, a positive genetic correlation was observed between these traits, as well between the traits and ME, i.e., selection would result in positive genetic gains. The use of US_M may help improve body weight and udder quality in the progeny. Furthermore, the trends indicate that the selection adopted on the farms has been effective in promoting genetic progress.
引用
收藏
页数:5
相关论文
共 36 条
  • [21] Evaluation of body weight and visual scores for genetic improvement of Nelore cattle
    Paterno, F. M.
    Buzanskas, M. E.
    Koury Filho, W.
    Lobo, R. B.
    Queiroz, S. A.
    [J]. TROPICAL ANIMAL HEALTH AND PRODUCTION, 2017, 49 (03) : 467 - 473
  • [22] RAFTERY A.E., 1991, BAYESIAN STAT, V4, P763
  • [23] Genetic variation in Nelore heifer pregnancy due to heat stress during the breeding season
    Santana, M. L., Jr.
    Eler, J. P.
    Oliveira, G. A., Jr.
    Bignardi, A. B.
    Pereira, R. J.
    Ferraz, J. B. S.
    [J]. LIVESTOCK SCIENCE, 2018, 218 : 101 - 107
  • [24] Fail to suckle in Guzera calves: underlying factors and genetic parameters
    Schmidek, Anita
    Zerlotti Mercadante, Maria Eugenia
    Rodrigues Paranhos da Costa, Mateus Jose
    Razook, Alexander George
    de Figueiredo, Leopoldo Andrade
    [J]. REVISTA BRASILEIRA DE ZOOTECNIA-BRAZILIAN JOURNAL OF ANIMAL SCIENCE, 2008, 37 (06): : 998 - 1004
  • [25] Smith B.J., 2007, Bayesian Output Analysis Program (BOA) for MCMC
  • [26] Splan RK, 2002, J ANIM SCI, V80, P3107
  • [27] Team R. C., 2018, R LANG ENV STAT COMP, DOI DOI 10.1890/0012-9658(2002)083[3097:CFHIWS]2.0.CO
  • [28] 2
  • [29] The presence of black vultures at the calving sites and its effects on cows' and calves' behaviour immediately following parturition
    Toledo, L. M.
    Paranhos da Costa, M. J. R.
    Schmidek, A.
    Jung, J.
    Ciryllo, J. N. S. G.
    Cromberg, V. U.
    [J]. ANIMAL, 2013, 7 (03) : 469 - 475
  • [30] Genetic association of growth traits with carcass and meat traits in Nellore cattle
    Tonussi, R. L.
    Espigolan, R.
    Gordo, D. G. M.
    Magalhaes, A. F. B.
    Venturini, G. C.
    Baldi, F.
    de Oliveira, H. N.
    Chardulo, L. A. L.
    Tonhati, H.
    de Albuquerque, L. G.
    [J]. GENETICS AND MOLECULAR RESEARCH, 2015, 14 (04) : 18713 - 18719