纤维源对不同品种生长猪养分消化率和氮平衡的影响

发布时间：2019-06-26 16:22

【摘要】：试验旨在研究纤维源对不同品种生长猪养分消化率和氮平衡的影响试验选取体重相近、健康去势的烟台黑、鲁农2号生长猪各6头,饲喂玉米-豆粕型日粮,采用有重复的3×3拉丁方设计,三个处理分别为基础日粮组、10%大豆皮替代基础日粮组、10%地瓜蔓替代基础日粮组。于每期试验的第6、7 d连续收集48 h的粪样和尿样测定日粮养分消化率和氮平衡代谢。结果表明:日粮添加10%地瓜蔓,两品种生长猪养分消化率和氮平衡显著或极显著降低(P0.05或P0.01),添加10%大豆皮对其氮总利用率影响显著(P0.05),对其他则影响不显著(P0.05);除对干物质消化率(P0.01)、氮表观消化率(P0.05)外,猪的品种对养分消化率和氮平衡均有显著影响(P0.05);纤维源对养分消化率和氮平衡均影响极显著(P0.01);但二者的互作关系不明显(P0.05)。与烟台黑生长猪相比,纤维源对鲁农2号生长猪养分消化率及氮平衡代谢的影响更大。
[Abstract]:The purpose of the experiment was to study the effects of fiber sources on nutrient digestibility and nitrogen balance of different breeds of growing pigs. 6 healthy castrated Yantai Black and Lunong 2 growing pigs were fed corn-soybean meal diet. The three treatments were basic diet group, 10% soybean skin instead of basic diet group and 10% papaya vine instead of basic diet group. On the 6th and 7th day of each experiment, fecal samples and urine samples were collected continuously for 48 hours to determine dietary nutrient digestibility and nitrogen balance metabolism. The results showed that the nutrient digestibility and nitrogen balance of the two breeds decreased significantly (P 0.05 or P 0.01), and the total nitrogen utilization rate (P 0.05) was significantly affected by the addition of 10% soybean skin, while the other had no significant effect (P 0.05). Except for dry matter digestibility (P01) and apparent nitrogen digestibility (P05), pig breeds had significant effects on nutrient digestibility and nitrogen balance (P05), while fiber sources had significant effects on nutrient digestibility and nitrogen balance (P01), but the interaction between them was not obvious (P05). Compared with Yantai black growing pig, fiber source had greater effect on nutrient digestibility and nitrogen balance metabolism of Lunong 2 growing pig.
【作者单位】：青岛农业大学动物科技学院;
【基金】：山东省生猪产业技术体系创新团队项目[SDAIT-06-022-09] 山东农业良种工程重大课题[2011 LZ 13-04]
【分类号】：S828.5

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