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Abstract

The objective of this study was to analyse the body weight of a herd of 3/4 Holstein × 1/4 commercial Zebu (CZ) and 1/2 Holstein × 1/2 Sahiwal (F2HS) cows in a dual-purpose system in the humid tropics of Mexico. Cows were weighed at calving and every fifteen days until the drying. The data analysed ...

Author(s)
Osorio-Arce, M. M.; Segura-Correa, J. C.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2007, 19, 3, pp 37
Abstract

Data on test day (TD) milk yield of cows from a dual-purpose herd were analysed by a mixed linear model in order to: choose the appropriate phenotypic (co)variance matrix structure, analyse the existence of trends in variances and covariances over time, and obtain lactation curves for Bos taurus × ...

Author(s)
Segura, J. C.; Osorio, M. M.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2002, 14, 1, pp 1-7
Abstract

20 F1 Sahiwal-Holstein cows were selected according to body condition, health status and milk yield. Animals were divided into 2 groups of 10 cows each. Group 1 was injected s.c. with 250 mg of somatotropin (GH) every 14 days, and Group 2 did not receive any treatment. All cows grazed and were...

Author(s)
Ocampo, L. C.; Morales, M.; Basurto, H. C.; Auró, A. A.
Citation
Veterinaria México, 1995, 26, 2, pp 137-139