Rendimentos de carcaça, cortes comerciais e não-componentes da carcaça de cordeiros Santa Inês alimentados com feno de erva-sal e concentrado

• Main Author: Moreno, Greicy Mitzi Bezerra
• Publication Date: 2014
• Other Authors: Borba, Hirasilva [UNESP], Araújo, Gherman Garcia Leal De, Voltolini, Tadeu Vinhas, Souza, Rafael Araújo, Silva Sobrinho, Américo Garcia Da [UNESP], Buzanskas, Marcos Eli [UNESP], Lima Júnior, Dorgival Morais De, Alvarenga, Tharcilla Isabella Rodrigues Costa
• Format: Article
• Language: por
• Source: Repositório Institucional da UNESP
• Download full: http://dx.doi.org/10.1590/S1519-99402014000100017; http://hdl.handle.net/11449/110079
• topic: Feedlot; halophyte plants; Rib eye area; Semi-arid; Sheep; Área de olho de lombo; Confinamento; plantas halófitas; Ovinos; Semiárido

This work aimed to evaluate the carcass yields, commercial cuts and non-carcass components of Santa Inês lambs fed with 30, 40, 50 or 60% of oldman saltbush hay with concentrated. Were used 32 castrated lambs at 8 months old and initial body weight of 22 + 1.97kg, housed individually and slaughtered after 60 days of feedlot. The weights of hot and cold carcass decreased linearly with the inclusion of saltbush hay in the diet, however, there was no effect for true carcass yield and commercial cuts: shoulder (19.26%), neck (8.52%) ribs (26.57%) and leg (33.88%). There was a linear decrease for ribeye area and fat thickness when the level of hay in the diet increased. The weights and yields of skin, liver, heart, kidneys with perirenal fat, omental and mesenteric fats decreased linearly with the inclusion of hay in the diet, while the content (%) of gastrointestinal tract increased. The increased proportion of saltbush hay in the diet of lambs provided adequate true carcass yield and commercial cuts, however, reduces the ribeye area and fat thickness, important measurements in the qualitative evaluation of the lamb's carcass.