Utilização de NaCl no suplemento como alternativa para viabilizar o sistema de alimentação de bezerros em creep-feeding

• Autor(a) principal: Sampaio, Alexandre Amstalden Moraes [UNESP]
• Data de Publicação: 2002
• Outros Autores: De Brito, Rodolfo Marques [UNESP], Da Cruz, Geraldo Maria [UNESP], De Alencar, Mauricio Mello [UNESP], Barbosa, Pedro Franklin [UNESP], Barbosa, Rogério Taveira [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S1516-35982002000100019; http://hdl.handle.net/11449/66780
• topic: Calves; Creep-feeding; Performance; sodium chloride; animal behavior; animal experiment; animal food; cattle; diet supplementation; economic aspect; food intake; grazing; nonhuman; suckling; weaning; weight gain; Animalia; Bos taurus; Brachiaria; Urochloa brizantha

Thirty two Canchim suckling calves, maintained on rotational grazing system of Brachiaria brizantha cv. Marandu, were divided in three groups corresponding to three evaluated treatments: control (without creep-feeding); SAL5 (addition of 5% of NaCl to concentrate fed in creep-feeding); and SAL10 (addition of 10% of NaCl to concentrate fed in creep-feeding). Feeding in a creep-feeding system lasted 90 days, divided in three subperiods of 30 days. The body weight gain was greater in the subperiods 1 and 2 for SAL10 and SAL5 treatments, respectively. There were no differences in the third subperiod and, in the overall period, the SAL10 treatment (0.91 kg.animal-1.day-1) was better than control treatment (0.81 kg,animal-1.day-1). The monthly remuneration provided by the treatments SAL5 e SAL10 related to the control group were-12.5 and 6.0%, respectively. The body weight differentials at weaning, compared to the control group, for creep-feeding provide a monthly net profit of 0, 0.6, 1.2, and 6.0% should be 10.8, 11.0, 11.2, and 12.8 kg.animal-1 for SAL5 and 7.6, 7.7, 7.8, and 9.0 kg.animal-1 for SAL10. It was concluded that the limited supplement intake in creep-feeding was necessary to obtain economic viability.