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Abstract

Data from 2438 calvings born to 682 cows recorded from 2004 to 2015 in an extensive production system were used, to investigate factors associated with abortion and calf mortality until weaning. Cows belonged to Brahman, Nellore, Guzerat and Brown Swiss × Zebu breed groups. Data were analyzed using ...

Author(s)
Segura-Correa, J. C.; Segura-Correa, V. M.; Magaña-Monforte, J. G.; Aké-López, J. R.
Publisher
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma de Yucatan, Yucatan, Mexico
Citation
Tropical and Subtropical Agroecosystems, 2018, 21, 3, pp 439-445
Abstract

The genetic parameters for Brahman cattle under the tropical conditions of Mexico are scarce. Therefore, heritabilities, additive direct and maternal correlations, and genetic correlations for birth weight (BW) and 205 days adjusted weaning weight (WW205) were estimated in four Brahman cattle herds ...

Author(s)
Estrada-León, R. J.; Magaña-Monforte, J. G.; Segura-Correa, J. C.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2014, 46, 5, pp 771-776
Abstract

Production and reproduction data of cows with 50 or 75% Holstein genes kept under a dual purpose system in Yucatan, Mexico were analyzed. The work consisted of a retrospective study type using 222 lactations (n=75 cows) located at the center of Yucatán. The traits evaluated were calving interval...

Author(s)
Magaña Monforte, J. G.; López, E. L.; Segura Correa, J. C.; AkéLópez, J. R.; Montes Pérez, R. C.; Aguilar Pérez, C. F.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2016, 28, 9, pp Article 156
Abstract

The effect of age at first calving (AFC) and breed type (BG) on cow length of productive life in the herd (LPL) and cumulative kilograms of calves weaned per cow (KWC) was studied. Data on 313 Brahman, 183 Nellore, and 269 crossbred cows (undefined crosses of European × Zebu cattle) born from 1986...

Author(s)
Aranda-Avila, I.; Magaña-Monforte, J. G.; Segura-Correa, J. C.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 8, pp 1737-1741
Abstract

The aim of this study was to determine the effect of season of the year and parity number on conception rate of beef cows from three zebu breeds under the tropical conditions of the southeastern of Mexico. Information of 2064 calving to conception intervals (CCI) from 423 cows calving from 2006 to...

Author(s)
Segura Correa, J. C.; Magaña Monforte, J. G.; Ake Lopez, J. R.; Segura Correa, V. M.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2017, 29, 11, pp Article 215
Abstract

Records of beef cows from a ranch in southern Mexico gave 1967 birth weights (BW), 1587 weaning weights adjusted to 210 days of age (AWW) and 2001 calving intervals (CI) for the comparison of the breed groups: Brahman (BR), Guzerat (GU), Nellore (NE) and crosses born to zebu dams by Brown Swiss...

Author(s)
Segura-Correa, J. C.; Magaña-Monforte, J. G.; Aké-López, J. R.; Segura-Correa, V. M.; Hinojosa-Cuellar, J. A.; Osorio-Arce, M. M.
Publisher
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma de Yucatan, Yucatan, Mexico
Citation
Tropical and Subtropical Agroecosystems, 2017, 20, 2, pp 297-305
Abstract

Heritabilities and genetic correlations between birth weight (n=13,741), adjusted 240-day weaning weight (WW, n=8,806) and age at first calving (AFC, n=3,955) of Brown Swiss cattle in Mexico were estimated. Data from 91 herds located in 19 of 32 states of Mexico from 1982 to 2006 were provided by...

Author(s)
Segura-Correa, J. C.; Chin-Colli, R. C.; Magaña-Monforte, J. G.; Núñez-Domínguez, R.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2012, 44, 2, pp 337-341
Abstract

The aim of the present study was to estimate ME requirements for maintenance (MEm) and Energetic Efficiency of Weight Gain (EEWG), in four Zebu (Bos indicus) and four Brown Swiss (Bos taurus) cows from cattle farms producing weaners in the tropical area of South Mexico. Cows were fed three levels...

Author(s)
Cardenas-Medina, J. V.; Ku-Vera, J. C.; Magana-Monforte, J. G.
Publisher
Medwell Online, Faisalabad, Pakistan
Citation
Journal of Animal and Veterinary Advances, 2010, 9, 2, pp 421-428
Abstract

The aim of the present study was to estimate ME requirements for Maintenance (MEm) and Energetic Efficiency of Weight Gain (EEWG), in four Zebu (Bos indicus) and four Brown Swiss (Bos taurus) cows from cattle farms producing weaners in the tropical area of South Mexico. Cows were fed three levels...

Author(s)
Cardenas-Medina, J. V.; Ku-Vera, J. C.; Magana-Monforte, J. G.
Publisher
Medwell Online, Faisalabad, Pakistan
Citation
Journal of Animal and Veterinary Advances, 2010, 9, 3, pp 522-528

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