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首页> 外文期刊>Tropical Animal Health and Production >Effects of protein-energetic supplementation frequency on growth performance and nutritional characteristics of grazing beef cattle
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Effects of protein-energetic supplementation frequency on growth performance and nutritional characteristics of grazing beef cattle

机译：蛋白质 - 能量补充频率对放牧牛肉生长性能和营养特性的影响

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摘要

Two experiments were conducted to evaluate reduced supplementation frequencies for grazing beef cattle in rainy season. In experiment 1, evaluating the nutritional parameters, four rumen-cannulated Nellore bulls (BW = 410 kg) were used. In experiment 2, evaluating animal performance, 48 Nellore bulls (BW = 358 kg) were used. The treatments were as follows: mineral supplement (MS) alone and MS plus protein-energy supplement provided 3x, 5x and 7x/week. Supplementation frequency did not affect (P & 0.05) intake and digestibility. Average daily gain was greater (P & 0.001) to supplementation compared with MS. The supplementation 5x/week resulted in greater weight gain per hectare (9.24) and higher economic returns during the study period (1.64%) compared to other supplementations. Supplementation 5x/week increased animal performance and positively influenced economic returns.
机译：进行了两次实验以评估雨季放牧牛肉牛的补充频率。 在实验1中，评估营养参数，使用四个瘤胃插管的小公牛（BW = 410kg）。 在实验2中，使用48个单胞公牛（BW = 358kg）来评估动物性能。 该处理如下：单独矿物质补充剂（MS）和MS加上蛋白质 - 能量补充，提供3倍，5倍和7倍/周。 补充频率不影响（P＆amp; 0.05）摄入和消化率。 与MS相比，平均每日增益更大（P＆amp; 0.001）补充。 补充5x /周为每公顷重量增加（9.24），与其他补充相比，研究期间的高度经济申报表（1.64％）。 补充5倍/周提高动物表现和积极影响的经济回报。

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