瘤胃保护性蛋氨酸对滩羔羊生长、消化、血清生化指标及胴体品质的影响

刘博, 王丽慧, 寇启芳, 牛文智, 张英慧, 张桂杰

doi:10.3969/j.issn.1006-267x.2019.07.029

动物营养学报 >

2019 , Vol. 31 >Issue 7: 3181 - 3187

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.07.029

反刍与草食动物营养 Ruminant and herbivore nutrition

瘤胃保护性蛋氨酸对滩羔羊生长、消化、血清生化指标及胴体品质的影响

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1. 宁夏大学动物科学系, 银川 750021;
2. 宁夏回族自治区水产加护推广站, 银川 750001;
3. 吴忠市红寺堡区天源良种羊繁育养殖有限公司, 吴忠 751900;
4. 宁夏回族自治区畜牧工作站, 银川 750001;
5. 赢创德固赛(中国)投资有限公司, 北京 100600

刘博(1995-),男,山西霍州人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:1157753860@qq.com

收稿日期: 2019-01-26

网络出版日期: 2019-07-19

基金资助

国家自然科学基金项目（31702134）；国家重点研发计划课题（2016YFC0500505）；宁夏高等学校一流学科建设（草学学科）资助项目（NXYLXK2017A01）

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Effects of Rumen Protected Methionine on Growth, Digestion, Serum Biochemical Parameters and Carcass Quality of Tan Lambs

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1. Departments of Animal Science, Ningxia University, Yinchuan 750021, China;
2. Ningxia Hui Autonomous Region Aquatic Products Extension Station, Yinchuan 750001, China;
3. Hongsipu District Tianyuan Well-Bred Sheep Breeding Co., Ltd., Wuzhong 751900, China;
4. Ningxia Hui Autonomous Region Husbandry Workstation, Yinchuan 750001, China;
5. Evonik Degussa(China) Co., Ltd., Beijing 100600, China

Received date: 2019-01-26

Online published: 2019-07-19

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摘要

本试验旨在研究饲粮中瘤胃保护性蛋氨酸（RP-Met）对舍饲滩羔羊生长、消化、血清生化指标及胴体品质的影响。试验选取体重为（19.06±0.46）kg的健康去势滩羊公羔64只，随机分成4组，分别饲喂在基础饲粮中添加0（对照）、0.03%、0.06%和0.09% RP-Met的饲粮，每组4个重复（栏），每个重复4只。预试期7 d，正试期85 d。结果表明：与对照组相比，随饲粮RP-Met添加量的增加，舍饲滩羊平均日增重和终末体重显著提高（P<0.05）；饲粮中添加0.06%和0.09% RP-Met显著提高了屠宰率（P<0.05）；饲粮添加RP-Met有降低胴体骨重/胴体重的趋势（P>0.05）；随饲粮RP-Met添加量的增加，饲粮中干物质、粗蛋白质、有机物、中性洗涤纤维表观消化率呈线性增加（P<0.05）；0.06% RP-Met组滩羊血清总蛋白和白蛋白含量显著提高（P<0.05），尿素氮含量显著降低（P<0.05）。综上所述，饲粮中添加RP-Met可提高舍饲滩羊的生长性能和胴体品质，适宜添加量为0.06%。

关键词： 瘤胃保护性蛋氨酸; 滩羊; 生长性能; 表观消化率; 胴体品质

本文引用格式

刘博, 王丽慧, 寇启芳, 牛文智, 张英慧, 张桂杰 . 瘤胃保护性蛋氨酸对滩羔羊生长、消化、血清生化指标及胴体品质的影响[J]. 动物营养学报, 2019 , 31(7) : 3181 -3187 . DOI: 10.3969/j.issn.1006-267x.2019.07.029

Abstract

The aim of this study was to determine the effects of rumen protected methionine (RP-Met) on growth, digestion, serum biochemical parameters and carcass quality of Tan lambs. Sixty-four Tan lambs with an average body weight of (19.06±0.46) kg were randomly assigned into 4 groups (4 pens per group, 4 lambs per pen), and fed basal diets with 0 (control), 0.03%, 0.06% and 0.09% RP-Met, respectively. The pre-feeding period lasted for 7 d, and test period lasted for 85 d. The results showed that compared with the control group, the average daily gain (ADG) and final body weight of Tan lambs increased significantly with the increase of RP-Met supplementation (P<0.05); dietary supplementation of 0.06% and 0.09% RP-Met could increase the slaughter rate (P<0.05); dietary supplementation with RP-Met had a tendency to reduce the carcass bone weight/carcass weight (P>0.05). With the increase of RP-Met supplementation, the apparent digestibility of dry matter, crude protein, organic matter and neutral detergent fiber in the diet increased linearly (P<0.05); dietary supplementation of 0.06% RP-Met significantly increased the contents of serum total protein and albumin (P<0.05), and significantly decreased the content of serum urea nitrogen (P<0.05). In conclusion, dietary supplementation of RP-Met can improve the growth performance and carcass quality of the Tan lambs. The suitable supplementation is 0.06%.

Key words： rumen protected methionine; Tan sheep; growth performance; apparent digestibility; carcass quality

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