AVALIAÇÃO DA SOMATOTROPINA BOVINA RECOMBINANTE (rbST) NOS NÃO-COMPONENTES DA CARCAÇA DE CABRITOS DE TRÊS GENÓTIPOS

• Published in: Ciência animal brasileira Vol. 14; no. 2; pp. 143 - 150
• Main Authors: Rodrigues, Luciana, Gonçalves, Heraldo César, Medeiros, Brenda B. Lemos, Menezes, Jakilane J. Leal, Maestá, Sirlei Aparecida
• Format: Journal Article
• Language: English
• Published: Universidade Federal de Goiás 27.06.2013
• Subjects: carcass; goats; growth hormone; live weight components
• ISSN: 1518-2797; 1809-6891
• DOI: 10.5216/cab.v14i2.8984

This study was developed with the aim of evaluating recombinant bovine somatotropin (rbST) on non-carcass components of goat kids of three genotypes. It was used 23 male goat kids of three genotypes, being 8 Alpine, 4 ½ Boer + ½ Alpine (½ BA) and 11 ¾ Boer + ¼Alpine (¾ BA), from which 12 received rbST e 11 control. The growth hormone used was the recombinant bovine somatotropin (rbST) and animals of treatment 1 received the hormone in the amount of 0.3 mg/kg live weight, from 45 days, adjusted in intervals of 14 days. Animals of treatment 2 (control) received saline solution in the same dosage and interval. The ½ BA goats presented a higher proportion of external non-carcass components (head, feet and skin) in relation to Alpine goats. Regarding the vital organs, such as lungs, kidneys and spleen, and the non-carcass components blood, internal fat and perinephric fat, Alpine goats presented higher values than ¾ BA goats. The administration of recombinant bovine somatotropin (rbST) did not produce effect on proportions and weight of non-carcass components. Proportions and weight of non-carcass components varied in function of genotypes, although animals were slaughtered at similar live weight.