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首页> 外文期刊>Journal of Production Agriculture >Effect of interseeding legumes into endophyte-infected tall fescue pastures on forage production and steer performance
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Effect of interseeding legumes into endophyte-infected tall fescue pastures on forage production and steer performance

机译：在被内生菌感染的高羊茅草场中混播豆类对牧草生产和转向性能的影响

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摘要

Grazing and subsequent finishing performances of steers that grazed high-endophyte (Neotyphodium coenophialum, formerly Acremonium coenophialum) tall fescue (Festuca arundinacea) pastures interseeded with lespedeza (Lespedeza stipulacea), ladino clover (Trifolium repens), or red clover (Trifolium pratense) were evaluated during 1995, 1996, and 1997 in Kansas. Nine 5-acre established pastures of tall fescue cv. Kentucky 31 with approximately 70% endophyte infection were used in a randomized completeblock design containing three replications of each legume treatment. Pastures were sown with legumes each year in late winter, and steers grazed continuously from early spring to mid-autumn. At the end of the grazing phase, steers were finished for slaughter. Legume cover, available forage dry matter, grazing and subsequent feedlot performances of steers, and carcass parameters were measured. Total available forage dry matter was similar among legume treatments. A significant (P<0.01) year X treatmentinteraction affected grazing-phase gain. Grazing performance was similar among legume treatments in 1995 and 1996. In 1997, steers grazing ladino clover pastures gained 36% more and 28% more than those grazing lespedeza and red clover pastures, respectively. Gains by steers grazing red clover and lespedeza pastures were similar. Legume treatment during the grazing phase had no effects on subsequent finishing performance. Total gains (grazing+finishing) were similar among legume treatments in 1995 and 1996; however, in 1997, steers that grazed ladino clover had higher (P<0.01) overall gains than those that grazed red clover or lespedeza.
机译：放牧与高角羊茅（Neotyphodium coenophialum，原名Acremonium coenophialum），高羊茅（Festuca arundinacea），高脚羊茅（Lespedeza stipulacea），拉丁美洲三叶草（Trifolium repenss）在1995年，1996年和1997年在堪萨斯州进行了评估。 9个占地5英亩的高羊茅履带牧场。含有约70％内生菌感染的肯塔基州31被用于随机的完全区组设计，每个豆科植物处理均重复三次。每年冬季末期，牧场都会播种豆类植物，从早春到中秋，ers牛不断放牧。在放牧阶段结束时，对ers牛进行了屠宰。测量了豆科植物的覆盖物，可用的牧草干物质，放牧和随后的subsequent牛育肥性能以及car体参数。在豆类处理中总可用草料干物质相似。 X处理的显着（P <0.01）交互作用影响了放牧阶段的收获。 1995年和1996年，豆科植物的放牧表现相似。1997年，放牧拉丁裔三叶草牧场的ers牛分别比放牧lespedeza和红三叶草牧场的ste牛多36％和28％。放牧红三叶草和lespedeza牧场的ste牛收益相似。放牧阶段的豆类处理对随后的肥育性能没有影响。在1995年和1996年，豆类治疗的总收益（放牧+肥育）相似。但是，在1997年，放牧拉丁裔三叶草的ste牛的总体收益要高于放牧红三叶草或lespedeza的ste牛（P <0.01）。

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