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Steers performance in dwarf elephant grass pastures alone or mixed with Arachis pintoi

机译：单独或与Arachis pintoi混合在矮人象草牧场中引导性能

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摘要

The inclusion of legumes in pasture reduces the need for mineral nitrogen applications and the pollution of groundwater; however, the agronomic and animal husbandry advantages with tropical legumes are still little known. The objective of this study was to quantify the effect of the use of forage peanut (Arachis pintoi cv. Amarillo) in dwarf elephant grass pastures (Pennisetum purpureum cv. BRS Kurumi) on forage intake and animal performance. The experimental treatments were dwarf elephant grass fertilized with 200 kg N/ha, and dwarf elephant grass mixed with forage peanut without mineral fertilizers. The animals used for the experiment were 12 Charolais steers (body weight (BW) = 288 +/- 5.2 kg) divided into four lots (two per treatment). Pastures were managed under intermittent stocking with an herbage allowance of 5.4 kg dry matter of green leaves/100 kg BW. Dry matter intake (mean = 2.44 % BW), the average daily gain (mean = 0.76 kg), and the stocking rate (mean = 3.8 AU/ha) were similar between the studied pastures, but decreased drastically in last grazing cycle with the same herbage allowance. The presence of peanut in dwarf elephant grass pastures was enough to sustain the stocking rate, but did not allow increasing forage intake and animal performance.
机译：牧场中添加豆类可以减少对矿质氮的需求和对地下水的污染;然而，热带豆类在农业和畜牧业上的优势仍然鲜为人知。这项研究的目的是量化在矮化象草牧场（Pennisetum purpureum简历，BRS Kurumi）中使用饲用花生（花生）对饲草和动物生长的影响。实验处理为矮化大象草，施肥量为200千克N / ha，矮化大象草与饲草花生混合，不含矿物肥料。实验中使用的动物是12头夏洛来牛ste牛（体重（BW）= 288 +/- 5.2公斤），分为四批（每次处理两只）。在间歇放养的情况下对牧场进行管理，以5.4千克绿叶干物质/ 100千克体重的牧草津贴。在研究的牧场之间，干物质摄入量（均值= 2.44％BW），平均日增重（均值= 0.76 kg）和放养率（均值= 3.8 AU / ha）相似，但在最后一次放牧周期中，牧草的摄入量急剧下降。相同的牧草津贴。矮小的象草牧场中存在花生足以维持放养率，但不能增加草料的采食量和动物性能。

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