Effects of level and length of supplementation on BW and harvest characteristics of yearling Boer and Spanish wethers

TitleEffects of level and length of supplementation on BW and harvest characteristics of yearling Boer and Spanish wethers
Publication TypeWeb Article
Year of Publication2012
AuthorsMerkel, RC, Gipson, TA, Wang, Z, Goetsch, AL
Series TitleJournal of Animal Science
Edition90
Abstract

Spanish (S; 28 - 40 wk of age) and Boer (B; 33 - 46 wk) wethers were used to determine effects of level (SL) and length of supplementation on BW and harvest characteristics. The experiment started in January, with wethers residing in 4 pastures primarily with warm season grasses. Alfalfa hay was given free-choice, and a pelleted diet (16% CP and 60% TDN) was supplemented at 0.5 or 1.5% BW (DM basis; L and H, respectively). Five S and 6 B were harvested initially, and 12 per breed (BR) and SL were harvested after 110 and 218 d (PR 1 and 2, respectively). Data were analyzed by GLM procedures. There were BR differences (P ≤ 0.06) in initial BW (33.3 and 23.7 kg), carcass weight (15.4 and 10.9 kg), and mass of noncarcass components (NCC; 11.7 and 9.2 kg for B and S, respectively) but not in mass of NCC relative to empty BW (EBW). The ADG was greatest (P