饲喂含不同赖氨酸水平日粮（添加或不添加微生物植酸酶）的肉用公鸭的生产性能、胴体特性、肉质及血浆成分

Performance, carcass characteristics, meat quality and plasma constituents of meat type drakes fed diets containing different levels of lysine with or without a microbial phytase.

作者信息

Attia Y A

机构信息

Department of Animal and Poultry Production, Damnhour Faculty of Agriculture, Alexandria University, Egypt.

出版信息

Arch Tierernahr. 2003 Feb;57(1):39-48. doi: 10.1080/0003942031000086635.

DOI:10.1080/0003942031000086635

PMID:12801078

Abstract

This experiment was conducted to study growth performance, carcass characteristics, meat quality and plasma constituents of Campbell drakes fed diets containing different levels of lysine with or without a microbial phytase. Basal vegetable duck all-mash diets were fed during the growing (1-35 d of age), and finishing period (36-56 d of age) and were formulated to contain 0.90% and 0.73% lysine (negative control), respectively. These diets were supplemented or not with L-lysine HCl, which resulted in a dietary lysine level of 0.90, 0.95, 1.01 and 1.06% and 0.73, 0.80, 0.87 and 0.94%, during the growing and finishing period, respectively. Furthermore, the diets were fed with or without 600 FTU phytase (Natuphos) except for those containing 1.06 and 0.94% lysine during the growing and finishing period, respectively (positive control). A lysine level of 1.01/0.87% in the growing/finishing diet significantly increased BWG and improved FCR of drakes by 2.1 and 1.8%, respectively. Phytase significantly increased BWG by 2.1% and 3.5% after feeding the basal diet and 1.01/0.87% lysine, respectively. Also, FCR was significantly improved by 2.2 and 1.8% of groups fed 0.95/0.80, and 1.01/0.87% lysine, respectively. Phytase as an independent variable increased BWG by 1.8, and improved FCR by 1.0%. Lysine and/or phytase did not affect carcass yield, and meat quality treats as well as plasma constituents of drakes. However, lysine level at 0.95/0.80% and 1.01/0.87% significantly decreased abdominal fat deposition compared to either the negative or the positive control. In conclusion, a lysine level of 1.01/0.87% in the growing/finishing diets for drakes is adequate. After phytase supplementation of the basal diet the BWG at a lysine level of 0.90/0.73% were similar to the positive control (1.06/0.94% lysine). However, the best FCR was obtained after feeding diets containing 1.01/0.87% lysine supplemented with phytase.

摘要

本试验旨在研究日粮中添加不同水平赖氨酸且添加或不添加微生物植酸酶时，对坎贝尔公鸭生长性能、胴体特性、肉质和血浆成分的影响。在生长阶段（1至35日龄）和育肥阶段（36至56日龄）饲喂基础蔬菜型肉鸭全价粉料日粮，其赖氨酸含量分别设定为0.90%和0.73%（阴性对照）。这些日粮分别补充或不补充L-盐酸赖氨酸，使得生长阶段和育肥阶段日粮赖氨酸水平分别为0.90%、0.95%、1.01%和1.06%以及0.73%、0.80%、0.87%和0.94%。此外，除了生长阶段和育肥阶段分别含1.06%和0.94%赖氨酸的日粮（阳性对照）外，其他日粮均添加或不添加600 FTU植酸酶（耐普酶）。生长/育肥日粮中赖氨酸水平为1.01%/0.87%时，显著提高了公鸭的平均日增重（BWG），并分别使饲料转化率（FCR）提高了2.1%和1.8%。饲喂基础日粮和1.01%/0.87%赖氨酸日粮后，植酸酶分别使BWG显著提高了2.1%和3.5%。此外，饲喂含0.95%/0.80%和1.01%/0.87%赖氨酸日粮的组，FCR分别显著提高了2.2%和1.8%。作为自变量，植酸酶使BWG提高了1.8%，FCR提高了1.0%。赖氨酸和/或植酸酶对胴体产率、肉质性状以及公鸭血浆成分没有影响。然而，与阴性或阳性对照相比，0.95%/0.80%和1.01%/0.87%的赖氨酸水平显著降低了腹部脂肪沉积。总之，公鸭生长/育肥日粮中赖氨酸水平为1.01%/0.87%是合适的。在基础日粮中添加植酸酶后，赖氨酸水平为0.90%/0.73%时的BWG与阳性对照（赖氨酸水平为1.06%/0.94%）相似。然而，饲喂含1.01%/0.87%赖氨酸并添加植酸酶的日粮时，FCR最佳。