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Abstract

The objectives of this study were to describe the lactation curves of Holstein × zebu (HZ) and Holstein × Sahiwal (HS) cows in a dual purpose cattle system in Tabasco, Mexico, to determine the effect of some environmental factors on the parameters of the lactation curves and to estimate their...

Author(s)
Osorio-Arce, M. M.; Segura-Correa, J. C.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Técnica Pecuaria en México, 2005, 43, 1, pp 127-137
Abstract

Data on productive and reproductive performance of cows in dual-purpose herds were analyzed to determine the effect of some environmental and genetic factors on saleable milk yield (SMY), lactation length (LL), daily saleable milk per lactation (DMYL), calving interval (CI), and daily saleable milk ...

Author(s)
Parra-Bracamonte, G. M.; Magaña, J. G.; Delgado, R.; Osorio-Arce, M. M.; Segura-Correa, J. C.
Publisher
FUNPEC, Brazil
Citation
Genetics and Molecular Research, 2005, 4, 3, pp 482-490
Abstract

The objective of this trial was to assess the social and individual behaviour of dairy cows under free housing conditions, during a winter season and between feeding periods. The study considered 60 days of observations using 40 Holstein cows (2-4 years old) from a dairy herd in the state of...

Author(s)
Vitela, I.; Cruz-Vázquez, C.; Solano, J.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2005, 37, 1, pp 23-27
Abstract

The objective of this work was to establish a characterization of the lactation curves in milk production and composition of the main breeds and crossbreeds present in the Mexican tropic. Four hundred eighteen cows (Holstein, Suizo Pardo, Criollo and Zebu breeds, and the crossbreed Holstein × Zebu...

Author(s)
Cervantes, P.; Fernández, L.; Ponce, P.
Publisher
Centro Nacional de Sanidad Agropecuaria, La Habana, Cuba
Citation
Revista de Salud Animal, 2006, 28, 2, pp 90-95
Abstract

The genetic structure of CSN3, LAA and b-GH loci of tropical dairy Creole cows (CLT) was determined. Cows were exposed to three different heat stress levels: without stress (CLT1); with moderate stress (CLT2); and with high stress (CLT3), in a warm region of Mexico. Intermediate frequencies and a...

Author(s)
Hernández, A.; Salinas, V. M.; Luna, M.; García, R.; Cervantes, P.; Uffo, O.; Álvarez, J. L.
Publisher
Centro Nacional de Sanidad Agropecuaria, La Habana, Cuba
Citation
Revista de Salud Animal, 2006, 28, 2, pp 96-104
Abstract

The objective of this study was to evaluate the body weights up to 18 months of age of 12 breed groups of Zebu (Z), Brown Swiss (BS) and Charolais heifers (CH), and their crosses under tropical conditions. A total of 1434 data on weaning weights adjusted to 240 days (WW8), average daily gain to 240 ...

Author(s)
Magaña, J. G.; Segura-Correa, J. C.
Publisher
Blackwell Publishing, Berlin, Germany
Citation
Journal of Animal Breeding and Genetics, 2006, 123, 1, pp 37-43
Abstract

All bovine autosomes have been reported to harbour quantitative trait loci (QTL) with effects on milk, fat and protein (kg and percentage), resistance to mastitis and somatic cell score (SCS). The detection of QTL depends on the presence of linkage disequilibrium (LD) between the genetic markers...

Author(s)
Moro-Méndez, J.; Hayes, J. F.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Técnica Pecuaria en México, 2006, 44, 3, pp 329-350
Abstract

Second parity Australia Friesian Sahiwal (AFS, n=10), Criollo Lechero Tropical (CLT, n=10) and dual purpose (DP, n=10) cows and their calves were utilized to determine the effect of genotype on productive and reproductive performance under the Soconusco region, Chiapas, Mexico conditions. The...

Author(s)
Martínez-Tinajero, J. J.; Aguirre-Medina, J. F.; Martínez-Priego, G.; Torres-Hernández, G.
Publisher
Fondo Nacional de Investigaciones Agropecuarias (FONAIAP), Maracay, Venezuela
Citation
Zootecnia Tropical, 2006, 24, 2, pp 109-120
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

The objective of this study was to evaluate the genetic and environmental factors influencing the milk yield (MY) and reproductive traits of 1/2 Holstein × 1/2 zebu (HZ), 1/2 Brown Swiss (S) × 1/2 Z (SZ), and 3/4 S × 1/4 Z (3S1Z) crossbred cows. The lactation records (n=90) of 30 crossbred cows, 10 ...

Author(s)
Vite-Cristóbal, C.; López-Ordaz, R.; García-Muñiz, J. G.; Ramírez-Valverde, R.; Ruiz-Flores, A.; López-Ordaz, R.
Publisher
Revista Veterinaria-Mexico, Facultad de Medicina Veterinaria y Zootecnia, Mexico City, Mexico
Citation
Veterinaria México, 2007, 38, 1, pp 63-79

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