不同物理有效纤维水平饲粮制粒对山羊养分表观消化率的影响

发布时间：2018-10-15 06:36

【摘要】：本试验旨在研究不同物理有效纤维(peNDF)水平饲粮制粒对山羊养分表观消化率的影响。选取4只体重约为25 kg的波杂公山羊(波尔山羊×徐淮山羊),采用4×4拉丁方试验设计,4只试验山羊分别饲喂4种不同的饲粮。饲粮A、B分别为peNDF水平为22.69%的粉料、颗粒料,饲粮C、D分别为peNDF水平为31.69%的粉料、颗粒料。4种饲粮的中性洗涤纤维、粗蛋白质含量及总能等相等或接近。试验分为4期,每期15 d,其中预试期10 d,正试期5 d。结果表明:1)低peNDF水平下,与饲粮A相比,饲粮B显著提高了酸性洗涤纤维、粗蛋白质、干物质、有机物、钙、磷表观消化率及氮保留量、氮保留率与氮生物学价值(P0.05);2)高peNDF水平下,与饲粮C相比,饲粮D显著提高了中性洗涤纤维、酸性洗涤纤维、粗蛋白质、干物质、有机物、钙、总能表观消化率及氮保留率(P0.05);3)相同饲粮形态下,与高peNDF饲粮(饲粮C、D)相比,低peNDF水平饲粮(饲粮A、B)除钙表观消化率无显著提高(P0.05)外,其余养分表观消化率均显著提高(P0.05)。由本试验结果得出,在高和低2种peNDF水平下,饲粮经制粒均提高了山羊的养分表观消化率。
[Abstract]:The purpose of this experiment was to study the effect of dietary granulation with different physical effective fiber (peNDF) levels on the apparent nutrient digestibility of goats. Four Boer goats (Boer goat 脳 Xuhuai goat) with a weight of about 25 kg were selected and 4 goats were fed with 4 different diets by 4 脳 4 Latin square test design. Dietary Agna B was the powder with peNDF level of 22.69%, granular feed with peNDF level of 31.69%, and pellets with neutral detergent fiber, crude protein content and total energy of the four diets equal or close to each other. The experiment was divided into 4 periods (15 days), including 10 days in pretest period and 5 days in positive trial period. The results showed that: 1) at low peNDF level, dietary B significantly increased the apparent digestibility of acid detergent fiber, crude protein, dry matter, organic matter, calcium, phosphorus and nitrogen retention. Nitrogen retention rate and biological value of nitrogen (P0.05); (2) under high peNDF level, dietary D significantly increased neutral detergent fiber, acid detergent fiber, crude protein, dry matter, organic matter, calcium, compared with diet C. The apparent digestibility of total energy and nitrogen retention rate (P0.05); 3) compared with high peNDF diet (CP D), the apparent digestibility of other nutrients in low peNDF diet (Alb B) was not significantly higher than that in high peNDF diet (P0.05), but the apparent digestibility of other nutrients increased significantly (P0.05). The results showed that the apparent nutrient digestibility of goats was improved by pelletizing at high and low peNDF levels.
【作者单位】：江苏省农业科学院六合动物科学基地;
【基金】：江苏省农业自主创新基金[cx(15)1003] 公益性(农业)行业科研专项(201203050-4)
【分类号】：S827.5

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