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首页> 外文期刊>Tropical Animal Health and Production >Effects of supplementing Leucaena leucocephala and conserved forages from natural pasture on the performance of grazing calves.
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Effects of supplementing Leucaena leucocephala and conserved forages from natural pasture on the performance of grazing calves.

机译：补充白草和天然牧场保存的牧草对小牛生产性能的影响。

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摘要

Twelve white Fulani x N'dama cross-bred calves weighing 83.79+or-1.16 kg were used in an 84-day experiment to investigate the utilization of forage resources from natural grazing land. The experimental diets were sole grazing, grazing+hay, grazing+silage and grazing+Leucaena leucocephala leaves. The calves were divided into four groups of three animals each and were randomly assigned to the four experimental diets. Crude protein (CP) contents of the forages ranged from 59 to 171 g/kg dry matter (DM). Neutral detergent fibre (NDF) and acid detergent fibre (ADF) contents of the forages ranged from 560 to 705 g/kg DM and 363 to 440 g/kg DM, respectively. Significantly (P<0.05) higher values in mineral contents (Ca, K, P and Mg) were recorded for L. leucocephala leaves compared to other forage resources. Variations (P<0.05) were observed in the average daily gain. Animals on grazing+L. leucocephala leaves diet had the highest (113 g/day) average daily gain, while those on sole grazing showed the least value (26.2 g/day). Packed cell volume (PCV), total serum protein, urea and calcium concentration showed significant differences (P<0.05). Effective utilization of forage resources from the natural pasture by the calves was attained on supplementation with conserved forages and L. leucocephala leaves without any deleterious effects on the haematological and serum parameters.
机译：在为期84天的实验中，使用了十二只白色的Fulani x N'dama杂交小牛，重83.79 +或1.16 kg，调查了天然牧场的牧草资源利用情况。实验饮食为单独放牧，放牧+干草，放牧+青贮饲料和放牧+白叶白叶。将小牛分为四组，每组三只动物，并随机分配给四种实验饮食。饲草的粗蛋白（CP）含量为59至171 g / kg干物质（DM）。牧草的中性洗涤剂纤维（NDF）和酸性洗涤剂纤维（ADF）含量分别为560至705 g / kg DM和363至440 g / kg DM。与其他饲草资源相比，白头参叶的矿物质含量（Ca，K，P和Mg）显着（P <0.05）更高。平均日增重变化（P <0.05）。放牧的动物+ L。白头翁叶饮食的平均日增重最高（113 g /天），而单​​独放牧的白桦叶的日增重最低（26.2 g /天）。堆积细胞体积（PCV），总血清蛋白，尿素和钙浓度显示出显着差异（P <0.05）。补充保守的草料和白头翁叶后，犊牛可以有效利用天然牧场的草料资源，而对血液学和血清学参数没有任何有害影响。

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