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Made available in DSpace on 2018-11-12T17:26:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-09-01. Added 1 bitstream(s) on 2021-07-14T17:51:18Z : No. of bitstreams: 1 S1519-99402015000300723.pdf: 192864 bytes, checksum: a511e277bc3b01d6d285bbc400b69deb (MD5) ResumoObjetivou-se avaliar o efeito da suplementação concentrada sobre o ganho de peso, as características quantitativas da carcaça e dos não constituintes da carcaça de caprinos castrados da raça Canindé em sistema de pastejo na caatinga. 40 caprinos com peso corporal (PC) inicial médio de 15,76 ± 0,96kg foram distribuídos nos níveis de zero; 0,5; 1 e 1,5% de suplementação concentrada (% PC), sendo abatidos quando os animais que recebiam 1,5% de suplementação atingiram peso médio de 23,10 ± 1,74kg. Utilizou-se delineamento inteiramente casualizado com quatro níveis de suplementação e dez repetições. O ganho de peso, rendimento de carcaça, rendimento dos cortes e peso dos constituintes não carcaça (pele, cabeça, sangue, fígado, rins, trato respiratório, trato gastrointestinal), bem como o peso da gordura total, foram influenciados positivamente pelos níveis de suplementação. Os níveis de suplementação um e 1,5% do PC são favoráveis ao desempenho, às características de carcaça e ao desenvolvimento de órgãos em caprinos da raça Canindé em pastejo na caatinga. AbstractThe aim of this study was to evaluate the effect of concentrate supplementation on weight gain, the quantitative characteristics of carcass and non-carcass components of the castrated goat carcass Canindé breed grazing system in the native pasture caatinga. 40 goats with an average body (BW) initial weight of 15.76 ± 0.96kg were distributed in a completely randomized design in levels of 0; 0.5; 1 and 1.5% of supplementation (% BW) and were slaughtered when the animals from the 1.5% of supplementation level reached 23.10±1.74kg. Performance, carcass yield, yield of cuts and weight of non-carcass components (skin, head, blood, liver, kidneys, respiratory tract, gastrointestinal tract) as well as total fat weightwere positively influenced by supplementation levels. The supplementation levels of 1 and 1.5% of body weight are favorable to performance and quantitative characteristics of Canindé goat kids grazing in the native pasture caatinga. Instituição Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte Universidade Federal da Paraíba Centro de Ciências Agrárias Departamento de Zootecnia Universidade Federal da Paraíba Departamento de Agropecuária Universidade Federal do Ceará Departamento de Zootecnia Universidade Federal do Rio Grande do Norte Departamento de Zootecnia Universidade Federal da Paraíba Centro de Ciências Agrárias Universidade Estadual Paulista Universidade Estadual Paulista

This study aimed to evaluate the effects of feed restriction on the carcass characteristics of castrated Canindé goat kids. A randomized block design was used, in which 21 goat kids with a body weight (BW) of 15.9±1.0kg were allocated to three levels of feed restriction: ad libitum, 20% and 40% restriction related to the ad libitum intake. The diet consisted of 55% forage (Tifton) and 45% concentrate. All animals were slaughtered when the kids fed ad libitum reached a BW of 25kg. After slaughter, the carcasses were chilled for 24 hours and subsequently measured. Kids fed ad libitum and subjected to 20% feed restriction showed similar morphometric carcass measurements, except for the chest circumference. Goat kids fed ad libitum exhibited greater values for warm and cold carcass yields compared with those subjected to 40% feed restriction and did not differ from the kids under 20% feed restriction. Weights of the commercial cuts showed decreasing mean values according to the intensity of feed restriction. Castrated Canindé goat kids subjected to 20% feed restriction presented similar carcass yields and proportion of commercial cuts to those fed ad libitum.