饲粮添加蛋氨酸锰对蛋鸡生产性能、蛋品质及血清生化指标的影响

发布时间：2018-01-06 08:42

本文关键词：饲粮添加蛋氨酸锰对蛋鸡生产性能、蛋品质及血清生化指标的影响　出处：《动物营养学报》2016年09期 　论文类型：期刊论文

【摘要】：本试验旨在研究饲粮添加蛋氨酸锰对蛋鸡生产性能、蛋品质及血清生化指标的影响。选用53周龄生产性能相近的"京红1号"商品蛋鸡480羽,随机分成5组,每组6个重复,每个重复16羽。蛋鸡饲喂玉米-豆粕型基础饲粮(5%预混料中不含锰),对照组在基础饲粮的基础上添加60 mg/kg硫酸锰(以锰计),试验组在基础饲粮的基础上分别添加20、40、60、80 mg/kg蛋氨酸锰(以锰计),预试期1周,正试期9周。结果表明:1)40 mg/kg蛋氨酸锰组蛋鸡的平均日采食量显著高于对照组(P0.05),比对照组提高了3.23%;饲粮添加蛋氨酸锰对蛋鸡的产蛋率、平均蛋重及料蛋比均无显著影响(P0.05)。2)60、80 mg/kg蛋氨酸锰组的哈夫单位、蛋壳强度和蛋壳厚度均显著高于对照组(P0.05),其中哈夫单位比对照组分别提高了8.42%及10.33%(P0.05),蛋壳强度比对照组分别提高了12.13%及17.05%(P0.05),蛋壳厚度比对照组均提高了8.57%(P0.05);饲粮添加蛋氨酸锰对蛋白高度及蛋黄颜色无显著影响(P0.05)。3)80 mg/kg蛋氨酸锰组蛋鸡的血清尿酸含量显著低于对照组(P0.05),比对照组降低了25.12%;饲粮添加蛋氨酸锰对血清碱性磷酸酶、谷草转氨酶、谷丙转氨酶活性及钙、磷、葡萄糖、总蛋白和白蛋白含量均无显著影响(P0.05),但各蛋氨酸锰添加组的血清碱性磷酸酶活性、白蛋白和钙含量与对照组相比有上升的趋势。由此可见,饲粮添加蛋氨酸锰可改善蛋品质,抑制蛋白质的分解代谢,提高蛋白质的利用率。
[Abstract]:The purpose of this experiment was to study the effects of dietary manganese methionine on the performance, egg quality and serum biochemical indexes of laying hens. 480 commercial layers with similar production performance were selected at the age of 53 weeks. They were randomly divided into 5 groups, 6 replicates in each group, 16 replicates in each group. The layers were fed with 5% manganese in the corn-soybean meal basal diet). The control group was supplemented with manganese sulfate for 60 mg/kg on the basis of the basic diet, and the experimental group was supplemented with 20 ~ 4060 on the basis of the basal diet. Manganese methionine 80 mg/kg. The results showed that the average daily feed intake of the control group was significantly higher than that of the control group (P0.05) and 3.23% higher than that of the control group. There was no significant effect on egg laying rate, average egg weight and feed / egg ratio of laying hens supplemented with manganese methionine in diet. The eggshell strength and eggshell thickness were significantly higher than that of the control group (P 0.05), and the Hafu unit increased by 8.42% and 10.33% respectively compared with the control group (P 0.05). Compared with the control group, the eggshell strength was increased by 12.13% and 17.05, respectively, and the eggshell thickness was increased by 8.57P0.05than the control group. There was no significant effect on the protein height and yolk color of the layers fed with manganese methionine. The serum uric acid content of the layers treated with manganese methionine 80 mg/kg was significantly lower than that of the control group (P0.05). Compared with the control group, it decreased 25.12%. The activities of serum alkaline phosphatase, glutamic oxaloacetic transaminase, alanine aminotransferase and the contents of calcium, phosphorus, glucose, total protein and albumin were not significantly affected by dietary manganese methionine). However, the activity of serum alkaline phosphatase, albumin and calcium content in serum of each Mn-Met supplementation group showed an increasing trend compared with the control group. Therefore, Mn-Met supplementation in diet could improve the egg quality. Inhibit the catabolism of protein and improve the utilization rate of protein.
【作者单位】：浙江大学饲料科学研究所农业部动物营养与饲料科学重点实验室;
【基金】：国家蛋鸡产业技术体系(CARS-41-K17) “十二五”国家科技支撑计划(2014BAD13B04)
【分类号】：S831.5
【正文快照】： 锰(Mn)作为一种重要的必需微量元素,在畜禽营养中具有多方面的生物学功能。锰是动物体内多种酶的辅酶因子,参与体内糖代谢、脂代谢等多方面的代谢过程[1-2],能够促进造血,提高动物机体的繁殖性能[3]。同时,锰对胚胎期和生长期动物骨骼发育有重要的作用,饲粮缺锰会导致动物软骨

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