Robson José Freitas Oliveira

Características físico-mecânicas de couros caprinos e ovinos no Cariri Paraibano

This work had as objective to evaluate the physical-mechanic characteristics of the leather from one genotype of sheep and three genotypes of goat. Forty three tanned chrome skins were used: 9 Santa Ines sheep, 12 ½ Anglo Nubiano, 16 ½ Boer, all crossbed with animals of non-defined breeds (NDB) and six NBD native goats. In the pre-experimental period, all animals were weaned at 90 days of age approximately and raised under semi-intensive production systems using cultivate pasture. The experimental phase began when the goat (5 moths of age) and sheep (4 moths of age) reached 18.3 kg. The animals were slaughtered with average weight of 30 kg with ages of 180 and 270 days, for sheep and goats, respectively. Genotype and direction factors influenced the results for the progressive tear strength, although all values have been inferior to the reference values recommended for good quality leather. In measurement of the grain distention and strength, no differences were detected among the genotypes, however, for the tensile strength and percentage elongation were observed differences among genotypes or the samples direction. All results were above to the recommended for an industrial quality product.

Desempenho de Cabritos Saanen em Diferentes Instalações Alimentados com Rações Farelada e Peletizada

Avaliou-se o desempenho de cabritos da raca Saanen em fase de aleitamento, alojados em baias individuais e coletivas, com duas formas fisicas de apresentacao dietetica (farelada e peletizada). Foram utilizados 32 animais (16 machos e 16 femeas). Os animais foram pesados semanalmente para controle do desenvolvimento corporal, ate que os mesmos atingissem peso minimo aproximado de 11 kg. Observou-se que o peso ao desaleitamento, ganho de peso diario, consumo diario de racao e numero de dias de aleitamento dos caprinos nao foram influenciados (P>0,05) pelos sistemas de criacao (baias individuais ou coletivas), e que o fornecimento da dieta na forma peletizada propiciou um ganho de peso diario superior (P<0,05) que o obtido para animais alimentados com a dieta farelada.