不同规模猪场饲料粗蛋白水平及赖氨酸添加量的研究

发布时间：2018-06-03 06:15

本文选题：饲料 + 粗蛋白水平　；参考：《畜牧与兽医》2017年10期

【摘要】：为了解生猪养殖各阶段饲料粗蛋白水平及氨基酸添加情况,从而为低蛋白日粮研究提供实际生产数据,本文对55个不同规模猪场各阶段饲料中粗蛋白水平及氨基酸添加情况进行了调研。结果表明:猪场各阶段饲料粗蛋白水平、赖氨酸添加量等于或高于NRC标准;在育肥期阶段,各猪场饲料粗蛋白水平均高出NRC标准2百分点,2/3猪场赖氨酸添加量高出NRC标准01百分点。不同规模猪场间比较,在保育前、后期以及生长期,大、中、小型猪场饲料粗蛋白水平无显著差异(P005)。而在育肥期,大型猪场饲料粗蛋白水平显著低于中、小型猪场(P005);中、小型猪场间饲料粗蛋白水平差异不显著(P005)。在保育前、后期,不同规模猪场饲料赖氨酸添加量无显著差异(P005);而在生长期和育肥期,大、中、小型猪场饲料赖氨酸添加量依次下降,其中,在生长期大型猪场饲料赖氨酸添加量显著低于小型猪场(P005),在育肥期显著低于中、小型猪场(P005)。结果提示,我国猪场使用的饲料蛋白质水平普遍较NRC标准高;与中小猪场相比,大型猪场在生长育肥期使用较低的粗蛋白水平饲料。
[Abstract]:In order to understand the level of crude protein and amino acid supplementation in different stages of pig breeding, the actual production data were provided for the study of low protein diet. The crude protein level and amino acid supplementation in feed of 55 pig farms of different sizes were investigated in this paper. The results showed that the level of crude protein and lysine content in feed of pig farm were equal to or higher than the standard of NRC, and at the stage of fattening, The level of crude protein in feed of pig farms was 2% higher than NRC standard and 2 / 3% higher than that of NRC standard. There was no significant difference in crude protein level between different size pig farms before, after conservation and in growth period, large, medium and small pig farms. However, in the fattening period, the level of crude protein in feed in large pig farm was significantly lower than that in medium and small pig farm, and there was no significant difference in feed crude protein level between medium and small pig farms. Before and at the later stage of conservation, there was no significant difference in dietary lysine content in different size pig farms, but in the growing period and fattening stage, the amount of lysine supplementation in large, medium and small pig farms decreased in turn, among which, The dietary lysine content in large pig farm was significantly lower than that in small pig farm P005, and in the fattening stage it was significantly lower than that in medium and small pig farm. The results indicated that the protein level of feed used in Chinese pig farms was generally higher than that of NRC standard, and that in large pig farms the level of crude protein was lower in the growth and fattening stage than that in small and medium-sized pig farms.
【作者单位】：江苏省消化道营养与动物健康重点实验室/南京农业大学消化道微生物研究室;
【基金】：国家重点基础研究发展计划(973)(2013CB127300)
【分类号】：S828.5

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