Evaluation of Bonsmara and Belmont Red cattle breeds in South Africa. 2. Genetic parameters for growth and fertility

Genetic parameters were estimated for growth and fertility indicator traits in a South African beef cattle population. Measurements on 5601 pedigreed progeny of 96 Bonsmara sires, 18 Belmont Red sires and 20 Bonsmara × Belmont Red cross sires were recorded over 19 years in 4 diverse climatic regions of South Africa. Growth traits were measured on growing stock from birth to 18 months at pasture. Cow weights were measured at calving and weaning. Age at first calving, and repeated measurements of calving day and calving interval were recorded on 1993 breeding females as indicators of reproductive performance. The traits were analysed using univariate and bivariate animal models with maternal effects fitted. Direct heritability of growth traits (0.11–0.42) and female fertility traits (0.02–0.13) suggested that genetic progress could be made by selection for some traits. Genetic correlations between growth and fertility traits were variable (–0.47–0.85) and indicated that multi-trait selection would be the best method of dealing with multidirectional forces on productivity traits. Genetic correlations between direct and maternal effects on liveweight traits were mostly negative indicating that genetic improvement of traits with strong maternal influence, such as weaning weight, would be complicated and supported the use of post-weaning weights with less maternal influence as selection criteria to improve the direct additive component of growth. The genetic parameter estimates provide useful reference values for estimation of breeding values in a proposed combined-breed genetic evaluation program.

[1]  N. Corbet,et al.  Evaluation of Bonsmara and Belmont Red cattle breeds in South Africa. 1. Productive performance , 2006 .

[2]  Karin Meyer,et al.  Estimates of the complete genetic covariance matrix for traits in multi-trait genetic evaluation of Australian Hereford cattle , 2004 .

[3]  K. Prayaga,et al.  Correlated responses in productive and adaptive traits and temperament following selection for growth and heat resistance in tropical beef cattle , 2004 .

[4]  F. Neser,et al.  VARIANCE COMPONENTS AND GENETIC PARAMETERS FOR EARLY GROWTH TRAITS IN A MIXED POPULATION OF PUREBRED BOS INDICUS AND CROSSBRED CATTLE , 2003 .

[5]  J. Díez,et al.  Genetic relationships between calving date, calving interval, age at first calving and type traits in beef cattle , 2002 .

[6]  J. V. Wyk,et al.  Genetic parameter estimates for body measurements and growth traits in South African Bonsmara cattle , 2002 .

[7]  R. Hoogesteijn,et al.  (Co)variance components, genetic parameters and annual trends for calf weights in a pedigree Brahman herd under selection for three decades , 2002 .

[8]  G. Renand,et al.  Genetic variability of reproductive traits in Charolais cows. , 2002 .

[9]  C. McManus,et al.  Genetic parameters for production and reproduction traits in Nellore cattle from a herd in Mato Grosso do Sul State. , 2002 .

[10]  E. Groeneveld,et al.  Variance component estimation of female fertility traits in two indigenous and two European beef cattle breeds of South Africa , 2002 .

[11]  E. Groeneveld,et al.  Variance component estimation on female fertility traits in beef cattle , 2001 .

[12]  H. Burrow.  Variances and covariances between productive and adaptive traits and temperament in a composite breed of tropical beef cattle , 2001 .

[13]  D. Krauss,et al.  Genetic relationship between cyclic ovarian activity in heifers and cows and beef traits in males , 2001, Genetics Selection Evolution.

[14]  Meyer,et al.  ESTIMATES OF DIRECT AND MATERNAL GENETIC EFFECTS FOR WEIGHTS FROM BIRTH TO 600 DAYS OF AGE IN NELORE CATTLE , 2001 .

[15]  G. Jordaan,et al.  Heritability estimates derived from threshold analyses for reproduction and stayability traits in a beef cattle herd , 2001 .

[16]  S. Schoeman,et al.  Genetic parameters for reproductive traits in a beef cattle herd estimated using multitrait analysis , 2001 .

[17]  G. L. Bennett,et al.  Genetic (co)variances for calving difficulty score in composite and parental populations of beef cattle: II. Reproductive, skeletal, and carcass traits. , 2001, Journal of animal science.

[18]  G. L. Bennett,et al.  Genetic parameters for growth, puberty, and beef cow reproductive traits in a puberty selection experiment , 2000 .

[19]  S. Schoeman,et al.  Heritabilities of pre-weaning traits in a multibreed beef cattle herd fitting models with or without a sire genotype x dam genotype interaction , 2000 .

[20]  S. Schoeman,et al.  Heritabilities of reproductive traits in a beef cattle herd using multitrait analysis , 2000 .

[21]  B. Mostert,et al.  Estimates of genetic parameters for traits measured in Phase A, C and D of the South African performance testing scheme , 2000 .

[22]  S. Schoeman,et al.  The influence of proportion of Simmentaler breeding in a multibreed synthetic beef cattle population on preweaning growth traits , 2000 .

[23]  J. Archer,et al.  Effect of divergent selection for yearling growth rate on female reproductive performance in Angus cattle , 1998 .

[24]  R. Lôbo,et al.  Genetic parameters for reproductive traits of zebu cows in the semi-arid region of Brazil , 1998 .

[25]  L. D. Van Vleck,et al.  Genetic parameters for sex-specific traits in beef cattle. , 1998, Journal of animal science.

[26]  E. Groeneveld,et al.  The covariance structure of growth traits in the Afrikaner beef population , 1998 .

[27]  K. Meyer.  Estimates of genetic parameters for weaning weight of beef cattle accounting for direct-maternal environmental covariances , 1997 .

[28]  E. J. Pollak,et al.  Relationship between sire x year interactions and direct-maternal genetic correlation for weaning weight of Simmental cattle. , 1997, Journal of animal science.

[29]  D. L. Robinson.  Models which might explain negative correlations between direct and maternal genetic effects , 1996 .

[30]  D. Johnston,et al.  Days to calving in Angus cattle: Genetic and environmental effects, and covariances with other traits , 1996 .

[31]  R. M. Koch,et al.  Genetic and phenotypic (co)variances for production traits of female populations of purebred and composite beef cattle. , 1995, Journal of animal science.

[32]  M. Haile-Mariam,et al.  Estimates of direct and maternal (co)variance components of growth traits in Boran cattle , 1995 .

[33]  C. Morris,et al.  A note on genetic correlations between pubertal traits of males or females and lifetime pregnancy rate in beef cattle , 1994 .

[34]  M. Haile-Mariam,et al.  Genetic and environmental effects on age at first calving and calving interval of naturally bred Boran (zebu) cows in Ethiopia , 1994 .

[35]  K. Meyer.  Estimates of direct and maternal correlations among growth traits in Australian beef cattle , 1994 .

[36]  J. Gibson,et al.  Analyses of published genetic parameter estimates for beef production traits. 2. Phenotypic and genetic correlations , 1994 .

[37]  J. Gibson,et al.  Analyses of published genetic parameter estimates for beef production traits. 1. Heritability , 1994 .

[38]  C. Roux,et al.  Genetic relationship between growth traits in Bonsmara heifer and bull calves on different nutritional regimes , 1994 .

[39]  G. Mohiuddin.  Estimates of genetic and phenotypic parameters of some performance traits in beef cattle , 1993 .

[40]  G. Davis.  Genetic parameters for tropical beef cattle in northern Australia: a review , 1993 .

[41]  N. Corbet,et al.  Response in female fertility and calf growth to selection for pregnancy rate in tropical beef cattle , 1993 .

[42]  K. Meyer.  Variance components due to direct and maternal effects for growth traits of Australian beef cattle , 1992 .

[43]  K. Meyer,et al.  Estimates of covariances between reproduction and growth in Australian beef cattle. , 1991, Journal of animal science.

[44]  D. Hetzel,et al.  Consequences of selection for weaning weight in zebu, Bos taurus and zebu × Bos taurus cattle in the tropics , 1991 .

[45]  N. Corbet,et al.  Correlated responses to selection for cow fertility in a tropical beef herd. , 1990 .

[46]  K. Meyer,et al.  Estimates of heritability and repeatability for reproductive traits in Australian beef cattle. , 1990 .

[47]  J. Kinder,et al.  Effect of selection for growth traits on age and weight at puberty in bovine females. , 1990, Journal of animal science.

[48]  A. H. Brown,et al.  Heritability estimates of calving date in Hereford cattle maintained on range under natural mating. , 1990, Journal of animal science.

[49]  J. S. Brinks,et al.  Estimation of genetic parameters among reproductive and growth traits in yearling heifers. , 1989, Journal of animal science.

[50]  S. Denise,et al.  Genetic parameter estimates for postweaning traits of beef cattle in a stressful environment. , 1988, Journal of animal science.

[51]  M. Mackinnon,et al.  Genetic and environmental effects on the fertility of beef cattle in a tropical environment. , 1989 .

[52]  D. Persley,et al.  Some characteristics of Australian isolates of zucchini yellow mosaic virus. , 1988 .

[53]  D. Notter,et al.  Heritability Estimates for Calving Date in Simmental Cattle1 , 1987 .

[54]  C. M. Bailey,et al.  Composition and yield of milk from beef-type Bos taurus and Bos indicus X Bos taurus dams. , 1987, Journal of animal science.

[55]  O. W. Robison.  The influence of maternal effects on the efficiency of selection; A review , 1981 .

[56]  R. Willham.  Problems in estimating maternal effects , 1980 .

[57]  H. Turner.  Selection of beef cattle for tropical Australia. , 1972, Australian veterinary journal.