Saleh Ahmed A, Kirrella Abeer A, Abdo Safaa E, Mousa Mahmoud M, Badwi Nemat A, Ebeid Tarek A, Nada Ahmed L, Mohamed Mahmoud A
Department of Poultry Production, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 333516, Egypt.
Department of Animal Wealth Development, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh 333516, Egypt.
Animals (Basel). 2019 Jul 22;9(7):467. doi: 10.3390/ani9070467.
The present study was conducted to examine that impact of dietary xylanase (Xyl) and arabinofuranosidase (Abf) supplementation on the performance, protein and fat digestibility, the lipid peroxidation, the plasma biochemical traits, and the immune response of broilers. A total of 480, un-sexed, and one-day-old broilers (Ross 308) were randomly divided into three treatments with eight replicates, where chicks in the first treatment were fed basal diets and served as the control, chicks in the second treatment were fed diets formulated with reductions of 90 kcal/kg, and chicks in the third treatment were fed the same formulated diets used in the second group as well as the Xyl and Abf combination (Rovabio Advance). Feed intake was decreased by the low energy diet, leading to an enhancement in feed efficiency enzyme supplementation in the low energy diet ( < 0.015). Both protein and fat digestibility were improved ( < 0.047) due to enzyme supplementation. Moreover, enzyme supplementation increased muscle total lipids content and decreased muscle thiobarbituric acid retroactive substance content. Furthermore, diets supplemented with Xyl and Abf exhibited an increase in antibody titers against the Newcastle disease virus ( < 0.026). In addition, enzyme supplementation increased gene expression related to growth and gene expression related to fatty acid synthesis. It could be concluded that dietary Xyl and Abf supplementation had beneficial impacts on growth, nutrient digestibility, lipid peroxidation, immune response, and gene expressions related to growth and fatty acid synthesis in broiler chickens fed low-energy diets.
本研究旨在探讨日粮中添加木聚糖酶（Xyl）和阿拉伯呋喃糖苷酶（Abf）对肉鸡生产性能、蛋白质和脂肪消化率、脂质过氧化、血浆生化指标以及免疫反应的影响。总共480只1日龄未分性别的罗斯308肉鸡被随机分为三个处理组，每组8个重复。第一个处理组的雏鸡饲喂基础日粮作为对照，第二个处理组的雏鸡饲喂能量降低90千卡/千克的日粮，第三个处理组的雏鸡饲喂与第二组相同的配方日粮以及木聚糖酶和阿拉伯呋喃糖苷酶组合产品（罗维素预混料）。低能量日粮降低了采食量，导致低能量日粮中添加酶提高了饲料效率（P<0.015）。添加酶提高了蛋白质和脂肪的消化率（P<0.047）。此外，添加酶增加了肌肉总脂质含量，降低了肌肉硫代巴比妥酸反应物含量。此外，添加木聚糖酶和阿拉伯呋喃糖苷酶的日粮对新城疫病毒的抗体效价有所提高（P<0.026）。另外，添加酶增加了与生长相关的基因表达以及与脂肪酸合成相关的基因表达。可以得出结论，在低能量日粮喂养的肉鸡中，日粮添加木聚糖酶和阿拉伯呋喃糖苷酶对生长、养分消化率、脂质过氧化、免疫反应以及与生长和脂肪酸合成相关的基因表达具有有益影响。
