饲粮酸性洗涤纤维水平对不同品种生长猪养分消化率及氮平衡的影响

发布时间：2018-05-23 14:30

本文选题：烟台黑猪 + 鲁农号猪　；参考：《中国畜牧杂志》2017年12期

【摘要】：本试验旨在研究不同酸性洗涤纤维(ADF)水平对不同品种生长猪饲粮养分消化率及氮平衡的影响。试验选取体重相近、健康去势的烟台黑猪、鲁农2号生长公猪各5头,采用5×5拉丁方设计按ADF含量分为3.8%、4.8%、5.8%、6.8%、7.8%5个处理进行代谢试验。玉米-豆粕型饲粮其他养分基本一致。于每期试验的第6、7天连续收集48 h的粪样和尿样,测定养分消化率和氮平衡代谢。结果表明:2个品种生长猪的常规养分消化率及氮平衡与饲粮ADF水平呈显著线性负相关;饲粮ADF水平为3.8%~5.8%时,2个品种生长猪4.8%组的中性洗涤纤维(NDF)、ADF以及5.8%组的有机物消化率与3.8%组差异显著(P0.05),其他各养分消化率和氮平衡指标均差异不显著(P0.05);而饲粮ADF水平为6.8%及以上时,各养分消化率及氮平衡则显著或极显著降低(P0.05或P0.01);品种对粗蛋白质、NDF、半纤维素消化率及氮平衡均有显著影响(P0.05);饲粮ADF水平对养分消化率和氮平衡均有极显著影响(P0.01);但品种与ADF水平的互作关系不明显(P0.05)。综合分析,本试验条件下,饲粮ADF水平为3.8%~5.8%时对2品种生长猪养分消化率及氮平衡的影响不明显;与烟台黑生长猪相比,饲粮ADF水平对鲁农2号生长猪养分消化率及氮代谢的影响更大。
[Abstract]:The experiment was conducted to study the effects of different acid washing fibers (ADF) on the nutrient digestibility and nitrogen balance of different growth pig diets. The experiment selected 5 Yantai black pigs with similar weight, healthy castration, ruong 2, 5, and 5 x 5 Latin squares, which were divided into 3.8%, 4.8%, 5.8%, 6.8%, and 7.8%5 treatments for metabolic tests. The other nutrients in the corn soybean meal diet were basically the same. 48 h feces and urine samples were collected on day 6,7 of each trial. The nutrient digestibility and nitrogen balance metabolism were measured. The results showed that the normal nutrient digestibility and nitrogen balance of 2 growing pigs were negatively correlated with the diet ADF level, and 2 of the diet ADF level was 3.8%~5.8%. The digestibility of organic matter in 4.8% groups of 4.8% groups was significantly different from that of the 3.8% groups (P0.05), and there was no significant difference in the other nutrient digestibility and nitrogen balance index (P0.05). While the dietary ADF level was 6.8% or more, the nutrient removal rate and nitrogen balance were significantly or significantly decreased (P0.05 or P0.01). The species had significant influence on the crude protein, NDF, hemicellulose digestibility and nitrogen balance (P0.05); the ADF level in the diet had a significant effect on the nutrient digestibility and nitrogen balance (P0.01), but the relationship between the varieties and the ADF level was not obvious (P0.05). Under the conditions of this test, the dietary ADF level was 3.8%~5.8% to 2 varieties of growing pigs. The effect of ADF level on nutrient digestibility and nitrogen metabolism of Yantai No. 2 growth pig was greater than that of the black growing pigs.
【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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