Cookies on VetMed Resource

Like most websites we use cookies. This is to ensure that we give you the best experience possible.

 

Continuing to use www.cabi.org  means you agree to our use of cookies. If you would like to, you can learn more about the cookies we use.

VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

Sign up to receive our Veterinary & Animal Sciences e-newsletter, book alerts and offers direct to your inbox.

Results per page:

Search results

AbstractFull Text

The objective was to determine the optimum percentage of Bos taurus (BT) genes for traits related to lactation performance of crossbred cows. Lactations (n=1,220) from 507 cows with percentage of BT genes ranging from zero to 87.5, were collected from a commercial farm in tropical Mexico. Variables ...

Author(s)
García-Muñiz, J. G.; García-Carreón, R.; López-Ordaz, R.; Ramírez-Valverde, R.; Núñez-Domínguez, R.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 01-62
AbstractFull Text

The aim of this study was to estimate phenotypic and genetic (co)variances for reproductive and lactation curve characteristic in Holstein cattle using multivariate animal models within the first three parities from 766 cows and 126 sires in a herd in Northern Mexico. Individual lactations were...

Author(s)
López-Ordaz, R.; Montaldo, H. H.; Castillo-Juárez, H.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 01-21
AbstractFull Text

The aim of this study was to estimate crossbreeding effects for milk production and reproductive traits in a multibreed population result of crosses of Holstein, Simmental and Swiss Brown × Zebu, using univariate animal models from 697 to 4923 calving records in six experimental herds in humid...

Author(s)
Montaldo, H. H.; Núñez, S. G.; Román-Ponce, S.; Ruiz-López, F.; Castillo-Juárez, H.; Román-Ponce, H.; Castañeda, O. G.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 11-09
AbstractFull Text

The objective was to determine the optimum percentage of Bos taurus (BT) genes on age at first-calving (AFC), days to first postpartum service (DFPS), days open (DO), and calving interval (CI) of Zebu cows and their crosses with European breeds. Calving records (n=1,704) from 570 cows with...

Author(s)
Díaz, M.; García, J. G.; Núñez, R.; López, R.; Martínez, P. A.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 01-67
AbstractFull Text

The purpose of this study was to compare the susceptibility to horn fly infestation of Brahman (BR) and Simbrah (SI) breeds, in a northeast region of Mexico. Fly counts were performed every fortnight to 30 BR and 30 SI cows, all of them randomly selected from larger herds. The model included the...

Author(s)
Ramírez-Valverde, R.; Maldonado-Simán, E.; Bermúdez-Villanueva, L.; Ramírez-Valverde, G.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 16-15
AbstractFull Text

Three random regression test day models, using Wilmink's function, first and second order Legendre polynomials, were used to fit lactation curves of the Tropical Milking Criollo (CLT) cattle. 9968 test-day records from 299 CLT cows located in the tropical low lands of the Gulf Coast of Mexico were...

Author(s)
Santellano-Estrada, E.; Alba, J. de; Chang, Y. M.; Gianola, D.; Ramírez-Valverde, R.; Becerril-Pérez, C. M.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 16-17
Abstract

Growth of 15 and 17 European (Holstein-Friesian or American Brown Swiss) × zebu potential sires from birth to 5 years of age was studied. Data sets were statistically analysed by using a sigmoid model equal to y=a+b/(1+exp(-(x-c)/d)) where: y=body growth, kg; a=birth weight, kg; b=mature weight,...

Author(s)
Castillo-Rojas, H.; Juárez-Lagunes, F.; Domínguez, J.; Castañeda, O. G.; Fajardo, J.; Avila, A.; Vega-Murillo, V. E.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 11, 2002, pp 0-3
Abstract

Records (680 to 1023) of cows (229 to 366) from 7 herds, were used to estimate performance and genetic parameters in the Tropical Milking Criollo (CLT) breed producing in the hot subhumid and humid low lands of the Gulf Coast of Mexico. Recording period was from 1974-1997. Traits studied were...

Author(s)
Rosendo-Ponce, A.; Becerril-Pérez, C. M.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 25, 2002, pp 1-3

Refine Results

Sort Order
Author
Organisms
Subject Topics