Frequência de suplementação proteico-energética sobre o desempenho e comportamento ingestivo de bezerros Nelore mantidos em pastagem tropical na estação seca

G. L. Franco, Marcelo Vedovatto, Marcella Cândia D'Oliveira, I.M. Cortada Neto, M. G. Morais, J. M. D. S. Diogo
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引用次数: 2

Abstract

With the objective to evaluate different frequencies of supplementation on the performance and ingestive behavior of Nellore calves kept on Urochloa brizantha cv. Marandu pasture, 56 animals with initial average body weight (BW) of 174.5 kg were submitted to the following treatments: no supplement and 1x, 3x, and 7x supplementation per week. The supplement was provided in the amount of 3.5 g kg-1 of BW day-1. BW and evaluation of behavior were assessed every 28 days. The randomized block's design with two repetitions was used. The analyses of variance were carried out by the GLM procedure in the SAS software, and the means were compared by the Tukey’s test at 5% significance. The supplementation increased the average daily gain (ADG; P ? 0.05); however, it did not differ between frequencies (0.005, 0.190, 0.183, and 0.177 kg head-1 day for the no supplement treatment and 1x, 3x, and 7x per week, respectively). The animals in the no supplement treatment showed longer grazing time (P ? 0.05) compared to those receiving the supplement. However, results did not differ between frequencies (10.44, 8.57, 8.32, and 8.59 hours day-1 for no supplement treatments and 1x, 3x, and 7x per week, respectively). Thus, the frequency of supplementation can be reduced to once a week without reducing animal performance.
蛋白质-能量补充频率对热带牧草内洛尔犊牛生产性能和摄食行为的影响
目的探讨不同补饲频率对饲养黑斑尿藻犊牛生产性能和摄食行为的影响。选取马兰度牧场56头初始平均体重为174.5 kg的动物,分别进行不添加、每周添加1次、3次和7次处理。添加量为3.5 g kg-1 (BW day-1)。每28 d进行体重和行为评价。采用两次重复的随机区组设计。方差分析采用SAS软件中的GLM程序进行,均数比较采用Tukey检验,显著性为5%。饲粮添加量增加了平均日增重(ADG);P ?0.05);然而,频率之间没有差异(0.005、0.190、0.183和0.177 kg头-1天,无补充处理和每周1次、3次和7次)。不添加饲料的动物放牧时间较长(P ?0.05)。然而,结果在频率之间没有差异(10.44、8.57、8.32和8.59小时,无补充治疗,每周分别为1次、3次和7次)。因此,在不降低动物生产性能的情况下,可以将添加频率降低到每周一次。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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