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苯甲酸对断奶仔猪生长性能、血清生化指标、养分消化率和空肠食糜消化酶活性的影响

DOI: 10.3969/j.issn.1006-267x.2013.04.014

Keywords: 苯甲酸,生长性能,养分消化率,消化酶活性,仔猪

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Abstract:

本试验旨在研究苯甲酸对断奶仔猪生长性能、血清生化指标、养分消化率和空肠食糜消化酶活性的影响。选择72头24日龄断奶、初始体重为(6.03±0.78)kg的健康"杜×长×大"三元杂交仔猪,按体重相近、公母各占1/2的原则,随机分为2个组,即对照组和苯甲酸组(5000mg/kg),每个组6个重复,每个重复6头仔猪,试验期42d。结果表明:与对照组相比,饲粮中添加5000mg/kg苯甲酸显著降低了仔猪全期的料重比(P<0.05),显著或极显著提高了试验第42天仔猪血清中钙和三碘甲腺原氨酸的含量以及饲粮干物质、粗蛋白质、能量、粗脂肪、钙、磷和粗灰分的消化率(P<0.05或P<0.01)。与对照组相比,饲粮中添加5000mg/kg苯甲酸显著或极显著提高了试验第14天仔猪空肠食糜胰蛋白酶、淀粉酶、脂肪酶、麦芽糖酶、蔗糖酶和乳糖酶的活性及试验第42天仔猪空肠食糜乳糖酶和蔗糖酶的活性(P<0.05或P<0.01)。综上所述,在本试验条件下,添加5000mg/kg苯甲酸可以提高断奶仔猪生长性能、养分消化率和空肠食糜消化酶活性,并在一定程度上改善血清生化指标。

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