Repeatability coefficients (r) for tick resistance and Babesia bovis infection levels and the correlation (ρ) between these traits were estimated in beef heifers, using artificial infestations and short intervals between measurements. Forty heifers, including 20 Bos taurus taurus (Caracu) and 20...
Author(s)
Maiorano, A. M.; Giglioti, R.; Oliveira, M. C. S.; Oliveira, H. N.; Cyrillo, J. N. S. G.; Mercadante, M. E. Z.; Silva, J. A. I. I. V.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2019, 59, 5, pp 938-944
Cattle temperament has practical significance since it is related to human and cattle safety and welfare, herd productivity, and meat quality. Aiming to evaluate genetic factors on cattle temperament, we used two measurements, flight speed (FS) and agitation score (AS), in a Brazilian herd with 4...
Author(s)
Costa, M. J. R. P. da; Piovezan, U.; Cyrillo, J. N. S. G.; Razook, A. G.
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 14, 2002, pp 1-4
Reproductive rates and performance traits in female beef cattle seropositive for Leptospira spp. were evaluated in a farm at São Paulo, Brazil in 1999-2000. Gir, Guzerá, Nelore and Caracu purebred animals were monitored by the microscopic agglutination test at the beginning of the breeding season....
Author(s)
Fava, C. del; Vasconcellos, S. A.; D'Angelino, J. L.; Morais, Z. M.; Figueiredo, L. A.; Razook, A. G.; Cyrillo, J. N. S. G.; Oliveira, J. V.; Reichert, R. H.
Publisher
Faculdade de Ciéncias Agrárias e Veterinárias, Campus de Jaboticabal, UNESP, Jaboticabal, Brazil
Citation
Ars Veterinaria, 2004, 20, 1, pp 52-61
Data from a selection experiment for growth carried out in Brazil were analyzed in order to evaluate the direct responses on yearling weight (YW) and the correlated responses on the size and reproduction traits of cows. The experiment was started in 1976, and in 1980 three lines of Nelore cattle...
Author(s)
Mercadante, M. E. Z.; Packer, I. U.; Razook, A. G.; Cyrillo, J. N. S. G.; Figueiredo, L. A.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2003, 81, 2, pp 376-384
This study was conducted to give continuity to the evaluations of correlated genetic changes on body measurements of Nelore cattle, as a result for yearling weight. Records of 5050 Nelore of the selection programme of the Experimental Station of Sertãozinho (SP), Brazil, born between 1978 and 2000...
Author(s)
Cyrillo, J. N. S. G.; Razook, A. G.; Mercadante, M. E. Z.; Figueiredo, L. A.; Ruggieri, A. C.
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
Since 1933 the Gir, Guzerá and Nelore Zebu breeds, have been preserved and selected at the Experimental Station of Sertãozinho (IZ-SP)-Brazil. The Station also received a small Caracu herd in an effort to save it from extinction in Brazil. The Caracu is a cattle of European origin, which has been...
Author(s)
Razook, A. G.; Figueiredo, L. A.; Bonilha Neto, L. M.; Cyrillo, J. N. S. G.; Mercadante, M. E. Z.; Trovo, J. B. F.; Ruggieri, A. C.; Packer, I. U.
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 24, 2002, pp 1-4
Data from a growth selection experiment, carried out in Brazil, was analysed in order to evaluate the effects of the selection for body weight on size and reproductive traits of the cows. The experiment started in 1978, with 3 lines of Nelore cattle, selection (NeS), traditional (NeT), both...
Author(s)
Mercadante, M. E. Z.; Packer, I. U.; Razook, A. G.; Cyrillo, J. N. S. G.; Figueiredo, 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 19, 2002, pp 1-4