Produção e composição do leite de cabras alimentadas com dietas contendo farelo de mamona extrusado.

Resumo: Objetivou-se avaliar a producao e composicao do leite de cabras leiteiras alimentadas com dietas contendo alimento extrusado a base de farelo de mamona (AEFM). Os valores medios de nitrogenio ureico do leite (NUL), e dos teores na concentracao dos acidos graxos butirico (C4:0) e caprilico (C8:0), foram influenciados (P<0,05) quando comparada ao tratamento controle. Para o indice de aterogenicidade (IA), observou-se influencia (P<0,05), demonstrando melhor resultado no nivel 33% de substituicao. As variaveis odor caracteristico, odor estranho, sabor caracteristico, sabor estranho, sabor rancoso, sabor adocicado e aceitacao global, foram influenciados (P<0,05), com medias de 3,24, 2,88, 5,20, 3,86, 3,49, 4,10 e 4,36% respectivamente. O (AEFM) pode substituir o farelo de soja em ate 33% na dieta de cabras lactantes sem causar prejuizos para a producao, composicao fisico-quimica, perfil dos acidos graxos do leite e nas suas caracteristicas sensoriais, sendo entao, uma fonte de alimentacao alternativa para cabras lactantes. [Production and composition of goats milk fed with diets containing extruded castor meal]. Abstract: The objective of this study was to evaluate the production, composition and sensory characteristics of dairy goat milk fed diets containing extruded food-based castor meal (EFCM). The average values of milk urea nitrogen (MUN) were affected (P <0.05), and the concentration of the butyric acid content in fatty acids (C4: 0) and caprylic (C8: 0) were affected (P <0.05) when compared to the control treatment. For the atherogenicity index (IA) showed a significant effect (P <0.05), demonstrating best results in 33% replacement level. The variables characteristic odor, strange odor, characteristic taste, strange taste, rancid flavor, sweet taste and overall acceptability were affected (P<0.05), with averages of 3.24, 2.88, 5.20, 3, 86, 3.49, 4.10 and 4.36% respectively. The (EFCM) can replace soybean meal up to 33% in the diet of lactating goats without causing damage to production, physical and chemical composition, fatty acid profile of milk and their sensory qualities, then being an alternative power source for lactating goats.