EFFECTS OF NON-GENETIC FACTORS ON PRE-WEANING GROWTH TRAITS IN DORPER SHEEP MANAGED INTENSIVELY IN CENTRAL MEXICO

Authors

  • 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

Keywords:

Birth weight, weaning weight, pre-weaning, weight gain, growth traits

Abstract

The objective of this study was to determine the non-genetic factors which a ect growth traits in Dorper lambs under intensive conditions. Nine hundred and ninety birth weight records and 851 weaning weight data from a commercial sheep farm were used. A model containing the e ects of year of birth, season of birth, litter size, dams' age and gender was used for identi cation of factors a ecting growth traits. Birth weight was highest (p < 0.05) in summer and lowest in winter and spring. Male lambs excelled females in birth weight, weaning weight, and average daily gain. Young dams produced o spring with a lower (p < 0.05) birth weight and weaning weight than older ewes As a conclusion, important in uences of environmental factors on growth traits were identi ed for Dorper lambs. 

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Author Biographies

  • 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

References

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.

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Published

2016-03-18

Issue

Section

SCIENTIFIC NOTE

How to Cite

Mellado, J. A., Marín, V. M., Reyes-Carrillo, J. L., Mellado, M. A., Gaytán, L. R., & De Santiago-Miramontes, M. de los A. (2016). EFFECTS OF NON-GENETIC FACTORS ON PRE-WEANING 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

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