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夏季舍饲散养环境下三个发育期小尾寒羊的行为差异 被引量:14
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作者 臧强 赵亚军 +2 位作者 李保明 施正香 韩晶 《Zoological Research》 CAS CSCD 北大核心 2005年第3期279-286,共8页
为提高规模化舍饲养羊系统中舍内环境和动物福利水平,有必要建立动物行为量化指标体系作为一种良好操作性的反馈评价工具.2003年夏季,在内蒙古赤峰市郊区一个规模化舍饲养羊场,对小尾寒羊3个生理发育期(羔羊、怀孕母羊和哺乳母羊)的个... 为提高规模化舍饲养羊系统中舍内环境和动物福利水平,有必要建立动物行为量化指标体系作为一种良好操作性的反馈评价工具.2003年夏季,在内蒙古赤峰市郊区一个规模化舍饲养羊场,对小尾寒羊3个生理发育期(羔羊、怀孕母羊和哺乳母羊)的个体行为作了连续观察和记录.结果表明:(1)小尾寒羊个体行为谱主要由饮食、反刍、休息和运动4种行为构成,各占总观察时间的29.18%、28.37%、31.51%和10.21%,而其他行为合计时间仅占0.71%.3个发育期小尾寒羊饮食、反刍、休息和运动的持续时间均有极显著差异(Kruskal-Wallis H tests,P<0.001).(2)3个发育期小尾寒羊反刍和休息时有躺卧和站立两种姿势,选择躺卧姿势的时间显著多于站立姿势(Wilcoxon test, P<0.001).(3)怀孕母羊在一天中温度明显变化(21~23、25~27、29~31 ℃)时,选择躺卧行为的比例分别是31.03%、75.00%、97.13%,三者差异显著(Friedman test,P<0.05).(4) 日温在27~31 ℃(12:00~17:00)时,怀孕母羊在通风较好、且无室外阳光照射的区域躺卧的比例从66%上升到83%,选择其他区域躺卧的比例从31%下降到14%,两个区域躺卧个体数差异显著(McNemar test, P<0.0001).以上结果说明,不同生理阶段小尾寒羊的个体行为时间分配具有明显差异;夏日环境温度对小尾寒羊的行为及其姿势选择有显著效应,而且影响怀孕母羊对躺卧区选择的喜好.提示,小尾寒羊舍饲散养系统提供的分异环境是导致羔羊与成体羊显现不同行为时间格局的原因之一,怀孕母羊作出高温回避的自然反应的前提是要有适宜容量的个体空间,这是设施养殖生产管理者应该考虑的. 展开更多
关键词 小尾寒羊 舍饲散养系统 个体行为 动物需求 羔羊 怀孕母羊 哺乳母羊
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Okara as a protein supplement affects feed intake and milk composition of ewes and growth performance of lambs 被引量:3
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作者 Laura B.Harthan Debbie J.R.Cherney 《Animal Nutrition》 SCIE 2017年第2期171-174,共4页
Evaluating the feeding value of wet okara as a protein supplement for lactating ewes with twin lambs was the objective. A 4 x 4 Latin square replicated 2 x(4 sheep, 4 treatments, 4 periods per square; 2 squares) was c... Evaluating the feeding value of wet okara as a protein supplement for lactating ewes with twin lambs was the objective. A 4 x 4 Latin square replicated 2 x(4 sheep, 4 treatments, 4 periods per square; 2 squares) was conducted to examine the influence of concentrate mix(okara or not) and type of forage(silage or hay) on ewe milk composition and growth of their lactating lambs. Treatment periods were 14 days(7 days adaptation and 7 days collection). Ewes(55 to 74.8 kg BW) were fed 1 of 4 diets: wheat middling and corn concentrate with mixed grass hay(TSH), okara and corn with mixed grass hay(OSH),soybean and wheat middlings with hay crop silage(TSS), and okara and corn with hay crop silage(OSS).Ewes fed hay diets had lower forage dry matter intakes than ewes fed silage. Intake of okara supplement was higher(P < 0.05) with OSH(3.64 kg/d) than with OSS(1.70 kg/d). There was no difference in supplement intake between TSH and TSS. There were no differences among diets for lamb daily gains or in ewe milk compositions among the diets. Okara is an effective source of protein for lactating ewes and their twin lambs. 展开更多
关键词 OKARA Protein lactating ewe Suckling lamb
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