动物营养学报 >

2015 , Vol. 27 >Issue 6: 1779 - 1786

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.06.014

饲料营养 Feed Science and Technology

包被氧化锌对断奶仔猪生长性能、血清生化指标及营养物质表观消化率的影响

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  • 1. 沈阳农业大学畜牧兽医学院, 沈阳 110866;
    2. 福建深纳生物工程有限公司, 福州 350700;
    3. 辽宁德宝农牧集团有限公司, 沈阳 110171
朱宇旌(1972—),女,辽宁彰武人,副教授,博士,主要从事动物营养与饲料科学研究。E-mail: syndzhyj@163.com

收稿日期: 2015-01-08

  网络出版日期: 2015-06-17

基金资助

国家自然科学基金(31101253,30972112)

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Effects of Coated ZnO on Growth Performance, Serum Biochemical Indices and Nutrient Apparent Digestibility of Weaner Piglets

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  • 1. College of Animal Sciences and Veterinary Sciences, Shenyang Agricultural University, Shenyang 110866, China;
    2. Fujian Shenna Bio. Co., Ltd., Fuzhou 350700, China;
    3. Liaoning Debao Agricultural and Animal Husbandry Group Co., Ltd., Shenyang 110171, China

Received date: 2015-01-08

  Online published: 2015-06-17

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摘要

本试验通过与未包被氧化锌(ZnO)对比,考察包被氧化锌(C-ZnO)对断奶仔猪生长性能、血清生化指标、营养物质表观消化率影响,旨在研究C-ZnO取代传统ZnO的效果,对生产实践中减少ZnO用量的可能性和加强其效果的可能性进行探讨。选28日龄遗传背景相似、平均体重为(9.32±0.38) kg的断奶大白仔猪120头,随机分成5组,每组4个重复,每个重复6头猪(公母各占1/2)。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加2 400 mg/kg ZnO和1 800、2 400、2 760 mg/kg C-ZnO。试验期为28 d。结果表明:与对照组相比,饲粮中添加2 400 mg/kg C-ZnO可极显著提高断奶仔猪的平均日增重(P<0.01),显著降低料重比(P<0.05),极显著降低腹泻率(P<0.01),其中2 400 mg/kg C-ZnO组的平均日增重极显著高于ZnO组(P<0.01)。与对照组相比,2 400 mg/kg C-ZnO组血清生长激素、免疫球蛋白G、免疫球蛋白M含量极显著升高(P<0.01);粗蛋白质和粗脂肪的表观消化率极显著改善(P<0.01);大肠杆菌菌群数量极显著降低(P<0.01),双歧杆菌菌群数量极显著升高(P<0.01)。2 400 mg/kg C-ZnO组与ZnO组相比,血清生长激素含量显著提高(P<0.05),碱性磷酸酶活性显著降低(P<0.05)。1 800 mg/kg C-ZnO组与ZnO组生长性能、血清指标及营养物质表观消化率差异均不显著(P>0.05)。ZnO组与对照组相比腹泻率显著降低(P<0.05),其他生长性能指标差异不显著(P>0.05)。本研究结果提示:添加2 400 mg/kg C-ZnO可显著提高断奶仔猪的生长性能,改善营养物质消化状况,有效控制仔猪腹泻;1 800 mg/kg C-ZnO可替代2 400 mg/kg ZnO。

关键词： 包被氧化锌; 断奶仔猪; 生长性能; 血清生化指标; 腹泻率; 营养物质表观消化率

本文引用格式

朱宇旌, 苏欣, 李方方, 张鑫, 况应谷, 郑丽莉, 高原, 孟玲, 郭福来, 张勇 . 包被氧化锌对断奶仔猪生长性能、血清生化指标及营养物质表观消化率的影响[J]. 动物营养学报, 2015 , 27(6) : 1779 -1786 . DOI: 10.3969/j.issn.1006-267x.2015.06.014

Abstract

This trial was conducted to study the effects of coated ZnO (C-ZnO) on the growth performance, the serum biochemical indices and nutrient apparent digestibility of weaner piglets, by compared with uncoated ZnO, aimed at research the effects of C-ZnO instead of traditional ZnO, and discussed production practice to reduce the possibility of the dosage of ZnO and enhance its effect. A total of 120 Large-White weaner piglets were randomly divided into 5 groups with 4 replicates per group and 6 piglets per replicate. Piglets in control group were fed a basal diet, the four groups were fed the basal diet supplemented with 2 400 mg/kg ZnO and 1 800, 2 400, 2 740 mg/kg C-ZnO, respectively. The trial lasted for 28 days. The results showed as follows: compared with control group, the average daily gain in the group supplemented with 2 400 mg/kg C-ZnO was increased significantly (P<0.01), the ratio of feed to gain was decreased significantly (P<0.05), and the diarrhea rate was decreased significantly (P<0.01). The average daily gain of 2 400 mg/kg C-ZnO group was significantly higher than that of ZnO group (P<0.01). Compared with control group, serum contents of growth hormone (GH), immunoglobulin G (IgG), immunoglobulin M (IgM) and the digestibility of crude protein and ether extract were significantly increased in 2 400 mg/kg C-ZnO group (P<0.01). Compared with control group, a significant reduction in E. coli number (P<0.01) and a significantly increase in Bifidobacteria number were also observed in 2 400 mg/kg C-ZnO group (P<0.01). Compared with ZnO group, serum GH content was significantly increased (P<0.05) and alkline phosphatase (AKP) activity was significantly decreased (P<0.05) in 2 400 mg/kg C-ZnO group. There were no differences in the growth performance, serum indices and nutrients apparent digestibility between the 1 800 mg/kg C-ZnO and ZnO groups (P>0.05). The diarrhea rate in ZnO groups was significantly decreased (P<0.05) compared with control group, but the other growth performance had no significant difference (P>0.05). In conclusion, supplementation of 2 400 mg/kg coated ZnO in weaner piglets diet can improve the growth performance, improve the nutrient digestible situation and control the diarrhea rate. The effect of 2 400 mg/kg uncoated ZnO is similar to that of 1 800 mg/kg coated one.

Key words： coated ZnO; weaner piglet; growth performance; serum biochemical indices; diarrhea rate; nutrient apparent digestibility

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