Genetic parameters of growth traits and carcass weight of New Zealand white rabbits in a tropical dry forest area

Authors

  • Donicer Eduardo Montes Vergara Faculty of Agricultural Sciences, University of Sucre, Sincelejo, Colombia.
  • Darwin Yovanny Hernndez Herrera Faculty of Agricultural Sciences, University of Sucre, Sincelejo, Colombia.
  • Naudin Alejandro Hurtado Lugo University Francisco de Paula Santander Ocaña, Ocaña, Norte de Santander, Colombia.

Keywords:

Productive traits; tropical climate; genetic correlation; heritability; repeatability

Abstract

Objective: The objective of this study was to estimate the heritability (h2), repeatability (r), and correlations ( rˆyi yi) in some traits of zootechnical interest in a population of New Zealand white rabbits of a tropical dry forest area.  Materials and Methods: Three mating groups were formed, each one of 1 male and 70 females. The traits evaluated were litter size at birth (LB), born alive (BA), born dead (BD), litter weight born alive (LW), litter weight at weaning (LWW), weaning weight (WW), slaughter weight (SW), and carcass weight (CW). Weaning took place at 42 days, and the fattening phase lasted 60 ± 3 days. A descriptive statistical study was carried out on the study variables. Paternal heritability was esti­mated (h2f ) and maternal ( h2m), repeatability, rabbit index IC, and Pearson’s correlations ( rˆyi yi) between traits. The descriptive statistics showed high variation for the BD traits.  Results: The values of the productivity found were similar to those presented in studies around the world. h2 presented magnitudes between low and medium. h2f ranged between 0.09 and 0.42 and between 0.11 and 0.45 for  h2m. In general, the values of  h2m were higher than the values of h2f . The r values for the traits LB, BA, LW, LWW, and SW presented low magnitude, while it was medium for WW and CW. From the values of r, IC was calculated for each of the rabbits, allowing their categorization, which will be used in future selection plans.  rˆyi yi among the variables ranged from −0.01 to 0.860. They were generally positive and mostly not significant (p > 0.05); they took a magnitude from low to moderate, except for the correlation between LB and BA.  Conclusion: The production of rabbits under tropical conditions is similar to other reports. The genetic parameters evaluated were medium-to-low, indicating a robust non-additive gene and/ or environmental effect.

J. Adv. Vet. Anim. Res., 8(3): 471-478, September 2021

http://doi.org/10.5455/javar.2021.h536

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Published

2021-09-20

How to Cite

Vergara, D. E. M., Herrera, D. Y. H., & Lugo, N. A. H. (2021). Genetic parameters of growth traits and carcass weight of New Zealand white rabbits in a tropical dry forest area. Journal of Advanced Veterinary and Animal Research, 8(3), 471–478. Retrieved from https://banglajol.info/index.php/JAVAR/article/view/76911

Issue

Vol. 8 No. 3 (2021)

Section

Original Articles

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Copyright (c) 2021 Donicer Eduardo Montes Vergara, Darwin Yovanny Hernndez Herrera, Naudin Alejandro Hurtado Lugo

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