复合酶制剂对北京填鸭胴体性状、体脂沉积和营养物质表观消化率的影响

发布时间：2018-01-29 08:31

本文关键词： 北京填鸭复合酶制剂胴体性状体脂沉积营养物质表观消化率　出处：《动物营养学报》2017年07期 　论文类型：期刊论文

【摘要】：本试验旨在研究饲粮复合酶制剂水平对北京填鸭胴体性状、体脂沉积和营养物质表观消化率的影响。选取35日龄健康、大小均匀的雄性北京鸭96只,随机分成4个组,每个组6个重复,每个重复4只鸭。对照组饲喂玉米-豆粕型基础饲粮,试验1组、试验2组和试验3组饲粮分别在基础饲粮中添加100、200和300 mg/kg的复合酶制剂,试验鸭在35和36日龄饲粮填饲量分别为260和300 g,之后5 d各组饲粮填饲量均为400 g/d。试验期为7 d。结果表明:1)饲粮复合酶制剂水平对北京填鸭屠体重、屠体率、全净膛重、全净膛率、腿肌重、腿肌率、龙骨长和胸宽均无显著影响(P0.05),而对北京填鸭增重、胸肌重、胸肌率、胸肌厚、肌胃重和肌胃率有显著影响(P0.05)。试验2组和试验3组北京填鸭胸肌重和肌胃重分别比对照组显著提高了7.88%和7.60%(P0.05)。2)饲粮复合酶制剂水平对北京填鸭皮脂重、皮脂率、腹脂重、腹脂率、肝脏重、肝重率和肝脂率均无显著影响(P0.05)。试验1组皮脂厚与对照组相比显著提高了16.2%(P0.05)。3)饲粮复合酶制剂水平对北京填鸭干物质和总能表观消化率无显著影响(P0.05),而对北京填鸭粗蛋白质表观消化率有显著影响(P0.05)。由此可见,饲粮中添加复合酶制剂对北京填鸭体脂沉积无显著影响,但能够提高饲粮中粗蛋白质表观消化率,并促进胸肌和肌胃的生长发育。
[Abstract]:The purpose of this study was to study the effects of dietary compound enzyme level on carcass traits, body fat deposition and apparent digestibility of nutrients in Beijing filled ducks. The control group was fed with corn-soybean meal basal diet, group 1, group 2 and group 3 were fed with 100 in the basal diet, respectively. For 200 mg/kg and 300 mg/kg of compound enzyme preparation, the feeding rates of the tested ducks were 260 and 300g at the age of 35 and 36 days, respectively. After 5 days, the feeding amount of each group was 400 g / d, and the experiment period was 7 days. The results showed that the level of dietary compound enzyme was effective on the body weight, carcass rate, weight of the whole bore, and the rate of the whole bore of the Beijing Duck Filled Duck Slaughterhouse. The leg muscle weight, leg muscle ratio, keel length and chest width had no significant effect on P0.05, but the weight gain, breast muscle weight, breast muscle rate and breast muscle thickness of Beijing duck were not significantly affected. The weight of breast muscle and the weight of muscle stomach were significantly increased by 7.88% and 7.605 in group 2 and group 3, respectively, compared with control group (P 0.05). (2) the dietary compound enzyme level was applied to the sebum weight of Beijing duck. Sebum rate, abdominal fat weight, abdominal fat rate, liver weight. There was no significant difference in liver weight rate and liver fat rate. The sebum thickness of experimental group 1 was significantly higher than that of control group (P 0.05 路3). Dietary compound enzyme level had no significant effect on dry matter and apparent digestibility of total energy (P0.05). However, the apparent digestibility of crude protein in Beijing duck was significantly influenced by P0.05. it can be seen that the addition of compound enzyme in diet had no significant effect on the fat deposition of Beijing duck. But it can improve the apparent digestibility of crude protein in diet and promote the growth and development of pectoralis and stomach.
【作者单位】：中国农业科学院饲料研究所农业部饲料生物技术重点实验室生物饲料开发国家工程研究中心;北京市畜牧总站;中国农业科学院北京畜牧兽医研究所;
【基金】：现代水禽产业技术体系建设专项资金资助(CARS-43) 中央级公益性科研院所基本科研业务费专项(1610382016015) 北京市农委科技项目
【分类号】：S834.5
【正文快照】： “北京烤鸭”驰名中外,是北京饮食文化的典型代表,其制作的原材料来源于填饲鸭。在填鸭生产中,填饲以玉米为主的高能饲料后,肉鸭快速沉积脂肪,原因是碳水化合物进入动物机体后,通过磷酸戊糖[1]和糖酵解等途径转化为甘油三酯,最终导致肝脏和其他脂肪组织内脂肪的沉积。在北京鸭

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