国家肉羊产业技术体系 - 带襟翼的隔板和秸秆对室内饲养的羔羊行为、应激反应、生产性能和肉品质的影响

带襟翼的隔板和秸秆对室内饲养的羔羊行为、应激反应、生产性能和肉品质的影响

编辑：符琳琳 2016-01-19

研究人员分析了使用带襟翼的木制隔板以及秸秆作为饲料和垫草的改良围栏对饲养在养殖场的羔羊的行为、应激反应、生产性能和肉品质的影响。60只公羔羊分别放置在富足（ESF）或常规（CO）的围栏中（3个围栏/处理，10只羔羊/围栏）。CO环境是恶劣的。ESF羔羊表现出对所提供的物品有很大的偏好，这促进了更多固有的和更加丰富的行为，并减少了行为规癖和羔羊的侵害，同时使亲和性增加（P≤0.05），有利于提高群体凝聚力。

然而，由较高的皮质醇水平证明（65.4vs. 43.8 nmol/L）ESF羔羊还形成了一种更自然的应对方式，并通过较高的眼睛温度来应对反应性测试（38.1vs.37.8℃）。结果发现，ESF羔羊有较高（P≤0.05）的屠宰体重（27.2vs.26.3kg），体型外貌评分（7.38vs.6.07）和pH 24（5.63vs.5.56），以及比CO羔羊低的蒸煮损失（12.9vs.14.9%）。

原文摘要如下：

Effect of a screen with flaps and straw on behaviour, stress response, productive performance and meat quality in indoor feedlot lambs

Aguayo-Ulloa LA¹, Pascual-Alonso M², Olleta JL², Sañudo C², Miranda-de la Lama GC³, María GA⁴

Abstract： We analysed the effect of a modified pen using a wooden screen with flaps and cereal straw as forage and bedding, on behaviour, stress response, performance and meat quality variables of lambs housed in feedlots. Sixty male lambs were placed in enriched (ESF) or conventional (CO) pens (3 pens/treatment, 10 lambs/pen). The CO environment was barren. The ESF lambs showed a great preference for the provided items, which encouraged more natural and richer behaviour, reducing stereotypies and lamb aggressions, and increasing affiliations (P≤0.05), which improves group cohesion. However, ESF lambs also developed a more natural coping style to the handling, evidenced by the higher cortisol levels (65.4vs.43.8nmol/L) and a higher eye temperature as response to the reactivity test (38.1vs.37.8℃). The ESF lambs had a higher (P≤0.05) slaughter weight (27.2vs. 26.3kg), conformation score (7.38vs.6.07) and pH 24 (5.63vs.5.56) but lower cooking losses (12.9vs.14.9%) than CO lambs.

Keywords: Enriching items, Indoor housing, Intensive system, Lamb welfare, Meat quality

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