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Abstract

A bovine diarrhoea virus outbreak in a herd of 143 Charolais and 27 Hereford cows in northeastern Mexico caused 43% of the cows to abort during 1989, 1990 and 1991. The herd was vaccinated in 1992. Pregnancy rates (91.1 and 93.4), percentage of stillborn calves (2.2 and 2.7) and calf mortality from ...

Author(s)
Mellado B., M.; González D., H.; Udave L., M.
Citation
Veterinaria México, 1996, 27, 2, pp 179-183
Abstract

Data from 55 Holstein-Friesian herds that included 8650 registration certificates and productive and reproductive performance of cows at first calving were obtained with the objective of evaluating the effect of percentage of white colour of the coat (PCB) and its relationship with climate and...

Author(s)
Lemus-Flores, C.; Becerril-Pérez, C. M.; Ortiz-Solorio, C. A.; Espinoza-Velázquez, J.
Publisher
Colegio de Postgraduados, Montecillo, Mexico
Citation
Agrociencia (Montecillo), 2002, 36, 1, pp 23-30
Abstract

The productive and reproductive performance of Holstein cows managed in a specialized (E) or dual-purpose system (DP) was compared over a 4-year period (1989-1992) in a commercial farm in the central zone of Yucatán State in México. In the specialized system the calves were separated from their...

Author(s)
Teyer-Bobadilla, R.; Magaña, J. G.; Santos, J.; Aguilar, C.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2002, 14, 4, pp 1-8
Abstract

A transversal study was carried out with the objective to know the reproductive status of dual-purpose cattle and to determine the effect of some environmental and breed group factors on the proportion of cows found pregnant (PCP) and calving to conception interval (CCI) in Yucatan, Mexico. The...

Author(s)
Osorio-Arce, M.; Segura-Correa, J.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2002, 14, 3, pp 1-7
Abstract

The effects of accumulated milk yield from calving to day 50 of lactation (MY50), number (NC) and season (SC) of calving on the intervals from calving to the appearance of the first dominant follicle (DF), the appearance of the first corpus luteum (CL), the time to completion of uterine involution...

Author(s)
Jara Aguilar, D.; Rangel Santos, R.; García-Muñiz, J. G.
Publisher
Facultad de Ciencias Veterinarias, Universidad del Zulia, Maracaibo, Venezuela
Citation
Revista Cientifica, Facultad de Ciencias Veterinarias, Universidad del Zulia, 2004, 14, 6, pp 548-558
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

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

A total of 48 grazing mid-lactating anoestrus dual purpose cows were used to determine the effect of feed supplementation (FS) on body condition score (BCS), milk yield, metabolic profile and pregnancy rate during the dry (DS, n=24) and rainy (RS, n=24) seasons in Mexico. Half of the cows received...

Author(s)
Montiel, F.; Galina, C. S.; Lamothe, C.; Castañeda, O.
Publisher
Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
Citation
Archivos de Medicina Veterinaria, 2007, 39, 3, pp 207-213
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
Abstract

Reproductive data collected from 13 medium-size goat farms in central Mexico (582 goats), were used to investigate if linear type traits influenced reproductive performance of high-yielding dairy goats. Data were analysed using multiple stepwise forward logistic regressions. Goats with the higher...

Author(s)
Mellado, M.; Mellado, J.; Valencia, M.; Pittroff, W.
Publisher
Blackwell Publishing, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2008, 43, 5, pp 599-605

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