| 大米糖浆替代乳糖对早期断奶仔猪血液生化及激素指标的影响 |
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| 作者姓名： | 康 萍 黄瑞林 印遇龙 |
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| 作者单位： | 1.中国科学院亚热带农业生态研究所，长沙 410125；2中国科学院研究生院，北京 100049 |
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| 摘 要： | 旨在研究大米糖浆取代乳糖后对早期断奶仔猪血液生化及激素指标的影响。方法是采用7d断奶的二元杂交仔猪（长白×大白）32头，随机分为2个处理组，每组16头，每组设16个重复，每个重复1只。日粮成分除乳糖水平外（对照组和处理组分别为43.5%和0%），其他成分均一致。试验期14d，分别于试验第7天和第14天每组随机抽取5头，颈静脉采血制备血清。结果表明，14d处理组的胆固醇显著低于对照组（p<0.05），而在21d对照组与处理组间差异不显著（p>0.44）。14d和21d对照组血清总蛋白、总甘油三酯、尿素氮及胰岛素与处理组间差异均不显著（p>0.05）。14d对照组与处理组间血清胃泌素水平差异不显著（p>0.05），21d对照组血清胃泌素水平显著高于处理组（p<0.05）。14d对照组T3水平显著高于处理组（p<0.05），21d T3水平对照组与处理组间差异均不显著（p>0.05）。14d对照组血清T4水平比处理组高，但差异不显著（p>0.05），21d对照组血清T4水平极显著高于处理组（p<0.01）。综合分析认为，乳糖具有促进早期断奶仔猪肠道吸收胆固醇的作用，但对早期断奶仔猪的脂肪和蛋白质代谢没有影响，此外胃可能不是早期断奶仔猪消化乳糖的主要部位，低乳糖水平及大米糖浆具有降低胃PH的作用。
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| 关 键 词： | 大米糖浆 乳糖 早期断奶仔猪 血液生化指标 激素 |
The effect of lactose substituted by rice syrup on the blood bio-chemical index and hormone level for weaning pigs |
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| Authors: | KANG Ping HUANG Rui-lin YIN Yu-long |
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| Institution: | 1.Institute of Subtropical Agriculture, Chinese Academy of Science, Changsha 410125, China;2.Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The effects of rice syrup as a substitute for lactose on blood bio-chemical index and hormone level in weanling pigs were studied. A total of 32 weanling barrows (Yorkshire ×Landrace) initially weighing 2.68±0.34 kg and 7d of age were placed in individual cages. Sixteen pigs were randomly assigned to one of two dietary treatments: (1) control, 43% lactose and (2) treatment 1, 0% lactose. Five pigs from each treatment were randomly selected for termination on 14d and 21d, respectively. When the lactose was replaced by the rice syrup, the serum cholesterol was significantly decreased on 14d（p<0.05）, but there was no effect on 21d（p>0.44）. As for the total protein, total triglyceride and insuline, there was no difference between the control and the treatment（p>0.05）. The serum gastrin concentration had no difference between the two groups on 14d（p>0.05）, but it was higher in the control than the treatment on 21d（p<0.05）. The serum T3 level was higher in the control than the treatment on 14d（p<0.05）, but there was no difference between the two groups on 21d（p>0.05）. The serum T4 level was significantly higher in the control than the treatment on 21d（p<0.01）, but there was no difference between the two groups on 14d（p>0.05）.The result suggested that the lactose could stimulate the cholesterol absorption, but had no effect on the protein and fat metabolism, moreover, the stomach might not be the main place for digesting the lactose, the low lactose level and rice syrup could decrease the PH in the pigs’ stomach. |
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