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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

Background: Results regarding the use of bovine somatotropin for enhancing fertility in dairy cattle are variable. Here, the hypothesis was tested that a single injection of a sustained-release preparation of bovine somatotropin (bST) during the preovulatory period would improve pregnancy success...

Author(s)
Bell, A.; Rodríguez, O. A.; Castro e Paula, L. A. de; Padua, M. B.; Hernández-Ceró, J.; Gutiérrez, C. G.; Vries, A. de; Hansen, P. J.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Veterinary Research, 2008, 4, 22, pp (26 June 2008)
Abstract

Pregnancy rates of a Beefmaster herd with improved management in the east coast of Mexico under intense heat load during most part of the year (THI range=56-102) were evaluated, using the GENMOD procedure of SAS, with respect to temperature-humidity index (THI) prior or after artificial...

Author(s)
Mellado, M.; Romero, P.; García, J. E.; Véliz, F. G.; Arévalo, J. R.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Livestock Science, 2010, 131, 2/3, pp 149-154
Abstract

The objective of this study was to determine the effect of some breed and environmental factors on age at first calving (AFC) and calving interval (CI) of Brahman cows and their crosses with European-breed bulls in a production system in the humid tropics of Mexico. Cows were fed on paddocks of...

Author(s)
Osorio-Arce, M. M.; Segura-Correa, J. C.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2010, 22, 8, pp 148
Abstract

The objective of this study was to determine if the technique of embryo transfer in cattle can be commercially feasible in a region situated in the humid tropics of Mexico. Twenty-six Bos taurus and twenty-six Bos indicus cows were estrous synchronized and superovulated to obtain a total of 80...

Author(s)
Alarcón, M. A.; Galina, C. S.; Corro, M. D.; Asprón, M. A.
Publisher
Springer, Amsterdam, The Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 6, pp 1135-1141
Abstract

Breeding records, including 649 inseminations during fall and winter at a dairy farm in a subtropical area of Western Mexico (24°N; 24°C, mean annual temperature 24°C) were analyzed to document effects of sex-sorted semen from commercial Gyr bulls, estrus synchronization protocol, inseminator, sire ...

Author(s)
Mellado, M.; Coronel, F.; Estrada, A.; Ríos, F. G.
Publisher
Springer, Amsterdam, The Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 7, pp 1493-1496
Abstract

The aim of this study was determined the effect of suckling of the calf restricted to once a day per 30 min plus a combined hormonal treatment on the postpartum anestrous period and fertility in beef cows after 120 days postpartum. About 67 Bos taurus × Bos indicus crossbred multiparous pregnant...

Author(s)
Escobedo-Amezcua, F.; Herrera-Camacho, J.; Nuncio-Ochoa, M. G. J.; Segura-Correa, J. C.; Gallegos-Sanchez, J.; Marin-Aguilar, M. A.
Publisher
Medwell Online, Faisalabad, Pakistan
Citation
Journal of Animal and Veterinary Advances, 2011, 10, 2, pp 195-199
Abstract

The effect of treatment with natural and synthetic progesterone and estradiol on pregnancy rate in anestrous and lactating Bos taurus × Bos indicus crossbred cows with low body condition in a tropical environment was determined. On day 0, 107 anestrous cows were assigned randomly to five...

Author(s)
Cuicas Huerta, R.; Montiel Palacios, F.; Garcia Gonzalez, R.; Ahuja Aguirre, C.
Publisher
Medwell Online, Faisalabad, Pakistan
Citation
Journal of Animal and Veterinary Advances, 2011, 10, 14, pp 1774-1778
Abstract

Background: High environmental temperature coupled with high humidity can result in reproductive failure in dairy cattle, with a drastic reduction in reproductive efficiency of dairy herds. Objective: To study the effect of high environmental temperature on reproduction performance of Holstein cows ...

Author(s)
Mellado, M.; Sepulveda, E.; Meza-Herrera, C.; Veliz, F. G.; Arevalo, J. R.; Mellado, J.; Santiago, A. de
Publisher
Universidad de Antioquia, Medellín, Colombia
Citation
Revista Colombiana de Ciencias Pecuarias, 2013, 26, 3, pp 193-200
Abstract

The main objective of this study was to assess the effect of month of breeding on reproduction performance of Holstein heifers and cows inseminated with sex-sorted or conventional semen in a hot environment. Pregnancy per artificial insemination (P/AI; 64,666 services over an 8-year period) both in ...

Author(s)
Mellado, M.; Sepulveda, E.; Macias-Cruz, U.; Avendaño, L.; Garcia, J. E.; Veliz, F. G.; Rodríguez, A.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2014, 46, 1, pp 265-269

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