Resumo

MERLOS-BRITO, Mayra I et al. Evaluation of productive traits in Boer x local, Nubian x local and local kids in the dry tropic of Guerrero, Mexico. Vet. Méx [online]. 2008, vol.39, n.3, pp.323-333. ISSN 0301-5092.

By means of the GLM procedure of the SAS statistical package, the effects of the genetic groups (GG) Boer x local (BL), Nubian x local (NL) and local x local (LL) kids, sex of kid (SK), type of birth (TB), age of dam (AD), season (SB) and year (YB) of birth, as well as genotype x environment interactions on birth weight (BW), adjusted weaning weight (AWW) and adjusted yearling weight (AYW) were evaluated. Likewise, the effect of GG on slaughter weight (SW), chilled carcass weight (CW) and dressing percentage (DP) was evaluated in a sample of kids of each genotype. Overall least-squares means for BW, AWW, AYW, SW, CW and DP were 3.3 ± 0.5 kg, 14.4 ± 1.8 kg, 26.6 ± 2.5 kg, 26.1 ± 4.6 kg, 11.1 ± 2.1 kg, and 42.3 ± 3.3%, respectively. Generally, the effects of GG, SK, TB, SB, YB, as well as some genotype x environment interactions influenced (P < 0.05) the variation of BW, AWW and AYW. Regarding the carcasses, an effect of GG on SW and CW was found (P < 0.05). In general, the BL kids had the highest averages for all of the traits analyzed, followed by the NL kids, and finally by the LL kids.

Palavras-chave : Kids; Body Weights; Carcass Traits; Dry Tropic.