Made available in DSpace on 2014-12-17T15:34:46Z (GMT). No. of bitstreams: 1 JoseAJ_DISSERT.pdf: 2198789 bytes, checksum: cfff0a35036e3279bf24509971f499d4 (MD5) Previous issue date: 2013-03-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study aimed to evaluate the performance and profitability of Canind? goats kept under semi-intensive management in mix farming system. 84 animals were used, being 81 does e three bucks.. The means of fertility rate at parturition, prolificacy and percentages of pregnant, kid survival and reproductive rate were compared by Tukey test at significance level of 5.0%. The kid weights from birth to weaning were submitted to variance analysis considering sex and birth type and the means were compared by Tukey test at 5.0% of significance. The percentages of fertility rate by ultrassographic were 91.36 and parturition 74.84. The prolificacy was 1.53. Independently of sex the mortality rate of kids from birth to weaning was 12.3. The average weights of offspring were 2.11 and 1.92 kg and 6.74 and 6.84 kg for male and female offspring at birth and weaning, in this order. The average weights of kids, meaning PN, P28, P56, P63, in the first season of kidding were 2.11 ? 0.46 kg, 3.63 ? 1.04 kg, 5.96 ? 158 kg and 6.74 ? 1.79 kg. There was significant differences (P<0,05) only to birth weight of kids sons of buck 135. However, the fertility at parturition for first and second breeding seasons (BS) were 87.65 and 62.96, respectively (P<0.05). The prolificacy was 1.58 and 1.47 to first and second BS in this order. The percentages of offspring survival from birth to weaning, to first and second BS were 92.86 and 80.00, respectively. From the first BS the reproduction rate was 1.28 while in the second was 0.74. After weaning the duration of lactation was 104 days to first breeding parturition and 38 days in the second one. The total milk production was 853.50 kg. The kids weight gain was influenced by season of year, wet and dry and buck (P<0.05). Were concluded that the seasons of year when breeding season and parturition occur strongly affected the productive performance and profitability of production system / Objetivou-se avaliar o desempenho produtivo e a rentabilidade de caprinos da ra?a Canind?, mantidos em regime de manejo semi-intensivo sob sistema de explora??o misto. Foram usados 84 animais, sendo 81 matrizes e tr?s reprodutores. As m?dias inerentes ? fertilidade ao parto, a prolificidade e as taxas de prenhez, de sobreviv?ncia de crias e de reprodu??o foram comparadas pelo teste de Tukey ao n?vel de signific?ncia de 5,0%. Os pesos das crias, ao nascer, aos 28 dias e aos 56 dias foram submetidos ? an?lise de vari?ncia considerando o sexo e o tipo de nascimento e tiveram as m?dias comparadas pelo teste de Tukey a 5,0% de signific?ncia. Para as duas esta??es de monta, as porcentagens de fertilidade por ultrassografia e ao parto foram de 91,36 e 74,84, respectivamente. A prolificidade foi de 1,53. O desmame ocorreu aos 63 dias de idade. Os pesos m?dios das crias foram de 2,11 kg e 1,92 kg e 6,74 kg e 6,84 kg, para as crias machos e f?meas, ao nascer e ao desmame, nessa ordem. Na primeira esta??o de partos os pesos m?dios das crias, PN, P28, P56, P63, foram 2,11 ? 0,46 kg; 3,63 ? 1,04 kg; 5,96 ? 1,58 kg; 6,74 ? 1,79 kg. P<0,05 apenas no peso ao nascer das crias do reprodutor 153. As porcentagens de fertilidade ao parto, para primeira e segunda esta??o de monta foram de 87,65 e 62,96, respectivamente (P<0,05). A prolificidade para primeira foi de 1,58 enquanto que para a segunda 1,47. As porcentagens de sobreviv?ncia de crias do nascimento aos 63 dias de idade, para primeira e segunda esta??o de parto (EP) foram de 92,86 e 80,00, respectivamente. Na primeira EP a taxa de reprodu??o foi de 1,28 enquanto na segunda de 0,74. A dura??o da lacta??o foi de 104 dias na primeira EP e 38 dias na segunda. A produ??o total de leite foi de 853,50 kg. O ganho de peso das crias foi influenciado pela ?poca de nascimento e pelo reprodutor e as crias do reprodutor placa n?mero 128 apresentaram ganho superior (P<0,05). Conclui-se que a ?poca da esta??o de monta e de parto afeta o desempenho produtivo e a rentabilidade do sistema de produ??o