| 后备荣昌母猪适宜消化能和赖氨酸需要量研究 |
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| 引用本文： | 汪超,龙定彪,刘雪芹,刘作华,杨飞云.后备荣昌母猪适宜消化能和赖氨酸需要量研究[J].中国畜牧杂志,2010,46(21). |
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| 作者姓名： | 汪超 龙定彪 刘雪芹 刘作华 杨飞云 |
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| 基金项目： | 国家十一五科技支撑计划课题，重庆市自然科学基金重点项目 |
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| 摘 要： | 旨在探讨研究35～55 kg后备荣昌母猪适宜日粮消化能(DE)与表观可消化赖氨酸(ADLys)水平。选用(34.45±4.53)kg后备荣昌母猪216头,随机分为12个处理,每个处理6个重复,每个重复3头。采用3×4因子设计,日粮DE分别为11.72、12.34和12.97 MJ/kg,ADLys分别为0.43%、0.53%、0.63%和0.73%。结果表明:随着日粮DE水平的提高,试验猪日增重显著提高(P0.05),饲料增重比显著降低(P0.05),P2背膘厚显著增加(P0.01),母猪发情率呈现上升趋势(P0.1)。日粮Lys水平提高使血清尿素氮含量呈现上升趋势(P0.1)。在本试验条件下,35～55 kg后备荣昌母猪适宜日粮DE和ADLys水平分别为12.97MJ/kg和0.43%。
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| 关 键 词： | DE Lys 生产性能 P2背膘厚 发情率 血液指标 后备荣昌母猪 |
Study on Optimum Requirement of Dietary Digestible Energy and Lysine in Rongchang Replacement Gilt |
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| WANG Chao,LONG Ding-biao,LIU Xue-qin,LIU Zuo-hua,YANG Fei-yun.Study on Optimum Requirement of Dietary Digestible Energy and Lysine in Rongchang Replacement Gilt[J].Chinese Journal of Animal Science,2010,46(21). |
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| Authors: | WANG Chao LONG Ding-biao LIU Xue-qin LIU Zuo-hua YANG Fei-yun |
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| Abstract: | This study was conducted to investigate optimum level of digestible energy(DE) and lysine(Lys) in rongchang replacement gilt weighting 35-55kg.A total of 216 rongchang replacement gilt with an average initial body weight of(34.45±4.53)kg were randomly allocated to 12 treatments in a 3 ×4 factorial design with 6 replicates in each group and 3 gilts in each replicate.Three energy concentrations were 11.72,12.34 and 12.97MJ/kg,and four apparent digestible lysine concentrations 0.43%,0.53%,0.63% and 73%,respectively.Gilts in high energy group had higher absolutely daily gain(P < 0.05),feed conversion ratio(P < 0.05),back fat thickness(P < 0.01)and estrus rate(P < 0.1)compared with those in lower groups.In conclusion,the optimum levels of dietary energy and apparent digestible lysine in Rongchang replacement gilt weighting 35-55kg in this experiment were 12.97MJ/kg and 0.42%,respectively. |
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| Keywords: | digestible energy lysine performance P2 fat thickness estrus rate blood parameters rongchang replacement gilt |
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