Título

The effect of non-genetic factors on growth traits in Dorper sheep managed intensively in Central Mexico

Autor

Jesús Alberto Mellado Bosque

JOSE LUIS REYES CARRILLO

MIGUEL ANGEL MELLADO BOSQUE

LETICIA ROMANA GAYTAN ALEMAN

Ma de los Ángeles de Santiago Miramontes

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA - (CTI) Birth weight weaning weight pre-weaning weight gain growth traits Dorper lambs

Resumen o descripción

The objective of this study was to establish the non-genetic factors which affect growth traits in Dorper lambs under intensive conditions. 990 birth weight records and 851 weaning weight data from a commercial sheep farm were used. A model containing the effects of year of birth, season of birth, birth status, dam´s age and gender was used for identification of factors affecting growth traits. Birth weight was highest (P<0.05) in summer (4.0±0.7 kg) and lowest in winter and spring (3.7±0.8 kg). Male lambs excelled females in birth weight (3.9±0.7 vs. 3.7±0.8 kg), weaning weight (33.4±5.8 vs. 31.3±5.4 kg) and average daily gain (328±63 vs. 309±57 g). Young dams produced offspring with a lower (P<0.05) birth weight (3.6±0.8 vs 3.9±0.8 kg) and weaning weight (30.9±5.8 vs 32.3±5.9 - 33.6±5.4 kg) than older ewes. It was concluded that important influences of environmental factors on growth traits were identified for Dorper lambs.

Fecha de publicación

2 de septiembre de 2015

Tipo de publicación

Artículo

Recurso de información

http://ri.ujat.mx//handle/20.500.12107/1073

Formato

application/pdf

Idioma

Inglés

Repositorio Orígen

Repositorio Institucional de la Universidad Juárez Autónoma de Tabasco

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