Kishawy Asmaa Ty, Amer Shimaa A, Abd El-Hack Mohamed E, Saadeldin Islam M, Swelum Ayman A
Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt.
Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
Asian-Australas J Anim Sci. 2019 Aug;32(8):1161-1171. doi: 10.5713/ajas.18.0522. Epub 2019 Jan 4.
The current study aimed to replace soybean oil in broiler diets with linseed oil, which is rich in omega-3 fatty acid supplemented with pomegranate peel extract (PPE) and measured its effect on broiler performance, carcass traits, lipid profile, as well as fatty acids composition, phenols and flavonoids content of broiler muscles and immunity of broiler chicks.
A total of 300 1-day-old Cobb chicks were randomly allotted into six experimental groups, T1 fed on basal diet with soybean oil without any additives, T2 fed on basal diet with soybean oil with addition of 0.5 g/kg diet PPE, T3 fed on fed on basal diet with soybean oil with addition of 1 g/kg diet PPE, T4 fed on basal diet with linseed oil without any additives, T5 fed on basal diet with linseed oil with addition of 0.5 g/kg diet PPE and T6 fed on basal diet with linseed oil with addition of 1 g/kg diet PPE. The PPE supplementation with 0.05% improved final body weight with either soybean oil ration or linseed oil ration.
The PPE improved carcass dressing percentage in comparison with the control groups. Body fat levels decreased with increasing PPE levels, especially with a linseed oil diet. Replacing soybean oil with linseed oil decreased the total cholesterol and triacylglycerol levels in broiler serum. The PPE supplementation decreased serum total cholesterol levels and increased high-density lipoprotein cholesterol levels. The content of the breast muscle alpha linolenic acid improved after replacement of soybean oil with linseed oil in broiler diets. PPE supplementation increased the phenol and flavonoid content in broiler meat and increased lysozyme activity.
Replacing soybean oil with linseed oil in broiler diets with the addition of PPE enriched muscle meat with omega-3 fatty acids and antioxidants and improved broiler immunity and their serum lipid profile.
本研究旨在用富含ω-3脂肪酸的亚麻籽油替代肉鸡日粮中的大豆油，并添加石榴皮提取物（PPE），测定其对肉鸡生产性能、胴体性状、血脂谱、脂肪酸组成、肉鸡肌肉中酚类和黄酮类含量以及肉鸡雏鸡免疫力的影响。
将300只1日龄的科宝肉鸡随机分为6个实验组，T1组饲喂含大豆油的基础日粮，不添加任何添加剂；T2组饲喂含大豆油的基础日粮，并添加0.5 g/kg日粮的PPE；T3组饲喂含大豆油的基础日粮，并添加1 g/kg日粮的PPE；T4组饲喂含亚麻籽油的基础日粮，不添加任何添加剂；T5组饲喂含亚麻籽油的基础日粮，并添加0.5 g/kg日粮的PPE；T6组饲喂含亚麻籽油的基础日粮，并添加1 g/kg日粮的PPE。添加0.05%的PPE可提高大豆油日粮或亚麻籽油日粮的最终体重。
与对照组相比，PPE提高了胴体屠宰率。随着PPE水平的增加，体脂水平降低，尤其是亚麻籽油日粮组。用亚麻籽油替代大豆油可降低肉鸡血清中的总胆固醇和三酰甘油水平。添加PPE可降低血清总胆固醇水平，并提高高密度脂蛋白胆固醇水平。肉鸡日粮中用亚麻籽油替代大豆油后，胸肌α-亚麻酸含量提高。添加PPE可增加肉鸡肌肉中的酚类和黄酮类含量，并提高溶菌酶活性。
在肉鸡日粮中用亚麻籽油替代大豆油并添加PPE，可使肌肉富含ω-3脂肪酸和抗氧化剂，提高肉鸡免疫力及其血脂谱。
