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- Title
Post-weaning growth of pure and crossbred hair lambs under the tropical Mexican conditions.
- Authors
Muñoz-Osorio, G. A.; Aguilar-Caballero, A. J.; Sarmiento-Franco, L. A.; Wurzinger, M.; Alavez-Ramírez, A.
- Abstract
The study evaluated the post-weaning growth of pure and crossbred hair lambs under the tropical conditions of the southeast of México. Data from 323 male lambs of six distinct breed groups (Dorper, Katahdin, Pelibuey, Dorper × Katahdin, Dorper × Pelibuey and Katahdin × Pelibuey) were analyzed. The dataset considered the post-weaning average daily weight gain (ADG) and final body weight adjusted to 60 (P60) and 90 (P90) days of fattening. The statistical model included the fixed effects of breed group and two seasons of the year (Dry: January-May and Rainy: June-September). The initial body weight was included as co-variable. Breed group was a significant source of variation for all the traits (P=0.01), but the season of the year had no effect on any variable evaluated (P>0.05). Dorper × Katahdin crossbred lambs had a better post-weaning growth than the other breed group. Under the conditions of this study, genetic factors had a greater influence on the post-weaning growth of hair lambs than the non-genetic factors.
- Subjects
SOUTHEAST Mexico; ANIMAL young; LIVESTOCK growth; NUTRITION
- Publication
Archivos de Zootecnia, 2018, Vol 67, Issue 257, p149
- ISSN
0004-0592
- Publication type
Article
- DOI
10.21071/az.v67i257.3503