Use of NaCl in Supplement as an Alternative to Viabilize the Calf Creep-Feeding System

Revista Brasileira de Zootecnia

Cruz, Geraldo Maria da²  Brito, Rodolfo Marques de¹  Alencar, Maurício Mello de²  Barbosa, Pedro Franklin²  Barbosa, Rogério Taveira²  Sampaio, Alexandre Amstalden Moraes³ 

[1] Embrapa;Universidade Federal Paulista, Jaboticabal

关键词: calves;    creep-feeding;    performance     IntroduçãoA fase do ciclo produtivo que engloba a criação do bezerro propriamente dita;    que freqüentemente dura cerca de 200 dias;    é sempre motivo de especial atenção por parte do produtor de gado de corte;    pois é nessa fase do sistema de produção que muitos fatores importantes começam a interferir no bom desenvolvimento do bezerro;   

DOI  :  10.1590/S1516-35982002000100019

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- Thirty two Canchim suckling calves, maintained on rotational grazing system ofBrachiaria 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.

【 授权许可】

CC BY-NC