Meat production characteristics of Egyptian Baladi and Angora goats

Fifteen Baladi and 20 Angora intact males raised together from birth until 8 months of age were grown on a commercial coneentrate mixture fed at the rate of 0.6 kg/head/day with chopped wheat straw fed at 0.5 kg/head/day for 14 weeks. Body measurements were taken before slaughter and carcass measurements and offal eights after it. The right sides of all carcasses were dissected into cuts, weighed and deboned. Fat was separated from the 9-10-11 rib joints and estimated. The two breeds did not significantly differ in birth weight, weaning weight. carcass weight, dressing percentage, most body measurements, all carcass measurements and most offal weights. Significant differences are only found in body length, height at withers, weights of spleen and kidney fat. However, the Baladi had significantly heavier loin and shloulder (p< 0.01) and breast and flank (p< 0.05) than the Angora which had heavier legs (p< 0.05), The carcasses of the two breeds had very similar percentages of edible meat (68.38 versus 68.65),lean (57.47 verus 57.38) and fat in the rib joint (10.91 versus 11.27)

Características de carcaça de cordeiros Texel x Bergamácia, Texel x Santa Inês e Santa Inês puros, terminados em confinamento, com casca de café como parte da dieta Carcass characteristics of Texel x Bergamacia, Texel x Santa Inês and pure Santa Inês lambs, finished in confinement with coffee hull as a part of the diet

RESUMO - Trinta e seis cordeiros (18 machos inteiros e 18 fêmeas) de três diferentes grupos genéticos: 12 cordeiros cruzas Texel x Bergamácia (T x B), 12 cordeiros cruzas Texel x Santa Inês (T x S) e 12 cordeiros puros Santa Inês (SI) foram alimentados com três diferentes dietas experimentais: A- sem casca de café; B. com casca de café in natura; e C- com casca de café, tratada com uréia e grão de soja moído. Os pesos das carcaças quente e fria, o rendimento de carcaça quente (RC), a quebra de peso da carcaça devido ao resfriamento, as medidas de comprimento interno e total da carcaça, o comprimento de perna, o comprimento total de perna (CTP), o perímetro da garupa (PG), a largura da garupa (LG), a profundidade do tórax (PT) e a gordura subcutânea (GS), de acordo com a dieta, o grupo genético e sexo foram avaliados. Não houve efeito das dietas sobre as variáveis avaliadas. Os cordeiros cruzas T x B e T x S apresentaram menor CTP e maiores PG, LG e GS. Os cordeiros T x B apresentaram valores superiores para PT. Houve superioridade dos animais cruzados nos pesos das carcaças quente e fria, não ocorrendo diferenças para o rendimento da carcaça quente entre os grupos genéticos. Não houve diferença entre machos e fêmeas para GS. As fêmeas apresentaram melhor RC que os machos. Para as outras características, os machos mostraram valores superiores em relação às fêmeas.<br>ABSTRACT - Thirty six lambs (18 male and 18 female) from three different genetic groups: 12 lambs Texel x Bergamacia, (T B), 12 lambs Texel x Santa Inês (T S) and 12 lambs pure Santa Inês (SI) were fed with three different experimental diets: A - without coffee hulls; B - with in natura coffee hull and; C - with coffee hull, treated with urea and whole ground soybean seed. The hot carcass weight (CQ), cold carcass weight (CF), hot carcass dressing (RC), cooling weight loss (QR) and the measures of internal length (CI), and total (CE), leg length (CP), total leg length (CTP), croup circumference (PG), croup width (LG), thoracic depth (PT) and subcutaneous fat width (GS), according to the diet, the genetic group and sex were evaluated. Diets did not affect any of the analyzed variables. The crossbred T x B and T x S lambs showed lower CTP and higher PG, LG, and GS. The Tx B lambs showed higher values for PT. There were higher hot and cold carcass weights for the crossbred lambs, and there was no difference for hot carcass dressing among the genetic groups. There was no difference between male and female lambs for GS. The female lambs showed better RC than male lambs. The male lambs showed higher values for all the other characteristics in relation to the female lambs

Componentes do peso vivo em cordeiros e borregos Polwarth e cruzas Texel x Polwarth Live weight components in Polwarth and Texel x Polwarth lambs and hoggets

O estudo teve por objetivo comparar e quantificar o peso vivo ao abate e seus componentes em cordeiros e borregos Polwarth (Ideal) com cruzas de Texel x ovelhas Polwarth. Foram sacrificados 59 cordeiros com 116 dias de idade, sendo 40 Polwarth (21 machos e 19 fêmeas) e 19 cruzas de Texel x ovelhas Polwarth (7 machos e 12 fêmeas) e 24 borregos com 450 dias de idade, sendo 14 Polwarth e 10 cruzas de Texel x ovelhas Polwarth. Os animais foram criados em condições extensivas de campo nativo ao sul do Brasil (Pelotas-RS) e castrados aos 30 dias de idade. Em termos de valores absolutos, para peso vivo e seus componentes, não se detectaram diferenças significativas entre cordeiros puros e cruzas; para borregos, verificou-se que os cruzas apresentaram maiores pesos (peso vivo ao abate, carcaça quente e fria, cabeça, pulmões com traquéia, fígado, gordura renal e pélvica e rins). Em valores percentuais, foram verificados efeitos significativos entre puros e cruzas, somente em cordeiros, para pele e pulmões com traquéia e, um efeito de sexo para patas e fígado. Os resultados evidenciaram que o cruzamento entre ovelhas Polwarth com Texel, para aumento da produção de carne em condições extensivas de campo nativo, é viável em borregos (maior idade e peso) e não para cordeiros.<br>This work was undertaken to compare and quantify live body weight, at slaughter, and its components of Polwarth and Polwarth x Texel (ram) lambs and hoggets. Fifty-nine lambs (116 days old) were slaughtered. From that, forty were Polwarth (21 males and 19 females) and nineteen were Polwarth x Texel cresses (7 males and 12 females). Also, twenty-four hoggets (450 days old) were slaughtered. Fourteen hoggets were Polwarth and ten Polwarth x Texel cresses. The animals were raised under range conditions on native pasture, in seuthem Brazil (Pelotas-RS), and castrated at 30 days eld. There were no significant diferences, in absolute values, for body weight and its components, among purebred lambs and crosses; for hoggets, the crosses have shown higher weights (live body weight at slaughter, warm and cool carcass, head, lungs plus trachea, liver, kidney plus pelvic fat, and kidney). In percentage values, significant effects were observed among rebred and crosses only with lambs for hide and lungs plus trachea and sex effect for legs and liver. The results have shown that the crossbreeding among Polwarth (ewes) and Texel, for the increment of meat production under range conditions, is possible at a later age and weight (hoggets) but not for lambs