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首页> 外文期刊>Meat Science >Effect of feeding treatment during the backgrounding phase of beef production from pasture on: Ⅰ. Animal performance, carcass and meat quality
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Effect of feeding treatment during the backgrounding phase of beef production from pasture on: Ⅰ. Animal performance, carcass and meat quality

机译：牧场牛肉生产背景阶段的饲喂处理对以下方面的影响：Ⅰ。动物性能，car体和肉质

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摘要

This research evaluated effects of feedlot backgrounding on 40, 70 or 100% alfalfa hay diets (40hay, 70hay; 100hay, respectively) or pasture grazing (Pasture) before pasture finishing, on performance and beef characteristics of Angus heifers. Ninety six female calves were allocated to the four feeding strategies. Backgrounding took place during 114 days and subsequent pasture finishing over 132 days. Heifers of each strategy were slaughtered after 114 days (end of the feedlot period) and at end of the study when all remaining animals were finished on pasture. Effects of backgrounding were associated with rate of gain. Backgrounding strategies 40hay and Pasture resulted in the best performance. Beef attributes were similar. At the end of the feedlot period, 100hay was smaller and leaner, less tender and less juicy. At the end of the study, Pasture and 40hay heifers had on average the largest back fat thickness and intramuscular fat measurements. No treatment effects were detected for Wamer-Bratzler shear force, muscle pH, muscle color and sensory panel attributes.
机译：这项研究评估了肥育场背景对40％，70％或100％苜蓿干草日粮（分别为40hay，70hay； 100hay）或牧场放牧前的放牧（牧场）对安格斯小母牛生产性能和牛肉特性的影响。将九十六只雌性犊牛分配给这四种喂养策略。在114天内进行了背景调查，随后在132天内完成了牧场。每种策略的小母牛在114天后（肥育期结束）和研究结束时（所有其余动物均在牧场上完成）被宰杀。背景的影响与获得率有关。背景策略40hay和Pasture产生了最佳性能。牛肉属性相似。在育肥期结束时，100hay变得更小，更瘦，更嫩，更不多汁。在研究结束时，牧场和40头小母牛平均具有最大的背脂肪厚度和肌内脂肪测量值。未检测到Wamer-Bratzler剪切力，肌肉pH，肌肉颜色和感觉板​​属性的治疗效果。

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