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AbstractFull Text

The objective of this study was to verify the genetic and phenotypic trends for birth weight (BW), weaning weight (WW) and 205 days adjusted weaning gain (WG). The analyses were performed using a maternal effects mixed model and variance components estimated by restricted maximum likelihood,...

Author(s)
Corrêa, M. B. B.; Dionello, N. J. L.; Campos, L. T.; Cardoso, F. F.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 03-59
Abstract

Variance components were estimated using data from Brahman (4497 calves from 266 sires and 1311 dams) cattle at ANSA Genetics, Philippines. The traits were birth weight (BW), preweaning average daily gain (PRADG), preweaning gain (PRGAIN), and adjusted 210-day weaning weight (ADWW). The phenotypic...

Author(s)
Salces, J.; Bondoc, O. L.; Lambio, A. L.; Supandgco, E. P.; Laude, R. P.; Perilla, M. V.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 2, 2002, pp 0-3
Abstract

Records of birth (BWT), weaning (WWT) weights, and average daily gain (ADG) of 1184 male and female Friesian calves, which were progeny of 49 sires born from 1990 to 2000 were used. Data were statistically analysed using the computer programme of Harvey. Heritability estimates were 0.241, 0.279,...

Author(s)
Oudah, E. Z. M.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 2, 2002, pp 0-4
Abstract

This study estimated the genetic parameters for preweaning average daily gain (ADG) and the number of days to gain 160 kg (D160) in Nelore cattle. 39 409 calf records from 855 sires, 19 627 dams, and 1930 contemporary groups were used. Heritability estimates (restricted maximum likelihood -...

Author(s)
Peña, C. D. O.; Carvalheiro, R.; Queiroz, S. A. de; Fries, L. A.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 2, 2002, pp 0-4
Abstract

The aim of this study was to evaluate selection criteria in Gyr [Gir] cattle based on the traits such as average daily gain from birth to weaning (ADG) and number of days to gain 160 kg from birth to weaning (D160). Data from the Brazilian Association of Zebu Breeders of 16 592 calves, 507 sires,...

Author(s)
Muniz, C. A. S. D.; Queiroz, S. A.; Carvalheiro, R.; Fries, L. A.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 2, 2002, pp 0-4
Abstract

Weaning performance of 1393 purebred calves for heritability, genetic, phenotypic, and environmental correlation, as well as factors influencing weaning performance (year of birth, season of birth, sex, and number of calving) were evaluated. Traits included were weaning weight (WW), preweaning...

Author(s)
Szabó, F.; Lengyel, Z.; Komlósi, I.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 2, 2002, pp 0-4
Abstract

The genetic parameters in growth traits in beef cattle and milk yield and fat percentage in dairy cattle were estimated utilizing the farming system research and extension approach to collect pedigree and management information. The results of the long-term study showed higher additive individual...

Author(s)
Sornthep, T.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 25, 2002, pp 1-4

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