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

Autores/as

  • Jesús Alberto Mellado Universidad Autónoma Agraria Antonio Narro
  • Victor Manuel Marín Instituto Tecnológico de Torreón
  • José Luis Reyes-Carrillo Universidad Autónoma Agraria Antonio Narro
  • Miguel Angel Mellado Universidad Autónoma Agraria Antonio Narro
  • Leticia Romana Gaytán Universidad Autónoma Agraria Antonio Narro
  • Ma. de los Angeles De Santiago-Miramontes Universidad Autónoma Agraria Antonio Narro

DOI:

https://doi.org/10.19136/era.a3n8.847

Palabras clave:

Peso al nacimiento, Peso al destete, pre-destete, ganancia de peso, características de crecimiento

Resumen

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.

Biografía del autor/a

Jesús Alberto Mellado, Universidad Autónoma Agraria Antonio Narro

Profesor Investigador "C" de tiempo completo

Depto de Nutrición Animal

Victor Manuel Marín, Instituto Tecnológico de Torreón

Profesor Investigador de Tiempo completo

Depto de Ingeniería

José Luis Reyes-Carrillo, Universidad Autónoma Agraria Antonio Narro

Profesor Investigador "C" de tiempo completo

Depto de Biología

Miguel Angel Mellado, Universidad Autónoma Agraria Antonio Narro

Profesor Investigador "C" de tiempo completo

 Depto de Nutrición Animal

Leticia Romana Gaytán, Universidad Autónoma Agraria Antonio Narro

Profesor Investigador "C" de tiempo parcial

Depto de Producción Animal

 

Ma. de los Angeles De Santiago-Miramontes, Universidad Autónoma Agraria Antonio Narro

Profesor Investigador "C" de tiempo completo

Depto de Producción Animal

 

Citas

Afolayan RA, Adeyinka IA, Lakpini, CAM (2006) The estimation of live weight from body measurements in Yankasa sheep. Czech Journal of Animal Science 51: 343–348.

Benyi K, Norris D, Karbo N, Kgomo KA (2006) Effects of genetic and environmental factors on pre-weaning and post-weaning growth in West African crossbred sheep. Tropical Animal Health and Production 38: 547-554.

Publicado

2016-03-18

Cómo citar

Mellado, J. A., Marín, V. M., Reyes-Carrillo, J. L., Mellado, M. A., Gaytán, L. R., & De Santiago-Miramontes, M. de los A. (2016). The effect of non-genetic factors on growth traits in Dorper sheep managed intensively in Central Mexico. Ecosistemas Y Recursos Agropecuarios, 3(8), 229-235. https://doi.org/10.19136/era.a3n8.847

Número

Sección

NOTAS CIENTÍFICAS

Artículos más leídos del mismo autor/a