Department of Animal and Poultry Nutrition, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 4918943464, Golestan, Iran.
Department of Animal and Poultry Nutrition, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 4918943464, Golestan, Iran.
Animal. 2021 Feb;15(2):100104. doi: 10.1016/j.animal.2020.100104. Epub 2020 Dec 29.
The efficient time for supplementing flaxseed oil to meat-type quail to produce n-3 fatty acid fortified meat has not been determined. This study was conducted to find out the effects of different periods of flaxseed oil supplementation in the Japanese quail diet on the subsequent growth performance, carcass characteristics, fatty acids profile of breast, and functional properties of the Japanese quail meat. Totally, 720 one-day-old Japanese quail were studied in a 35-day experiment using a completely randomized design. Substituting sunflower oil with flaxseed oil had no significant effect on weight gain and feed intake in Japanese quails. Supplementing flaxseed oil for the whole 35-day growth period significantly reduced abdominal fat proportion. Flaxseed oil addition to the quail diet just a week before slaughter resulted in a 4.97-fold increase in the n-3 fatty acid content of the breast muscle. Feeding flaxseed oil decreased the activity of delta-9-desaturase in quail's breast compared to sunflower oil. The greatest thrombogenic index observed in the breast meat from control while consumption of flaxseed oil significantly decreased the thrombogenic index. Supplementing flaxseed oil to quail's diet for 21 and 35 days before slaughter significantly increased breast malondialdehyde content. Feeding flaxseed oil for long periods had no significant impact on the breast meat pH while water holding capacity was decreased. The breast lightness was increased when the flaxseed oil was fed for longer periods. Generally, feeding flaxseed oil in the last week of the growth period improved the feed conversion ratio and the fatty acid profile of quail breast meat with the minimum deterioration effects on meat quality characteristics.
向肉用鹌鹑饲料中补充亚麻籽油以生产富含 n-3 脂肪酸的肉的有效时间尚未确定。本研究旨在确定在日本鹌鹑日粮中补充不同时期亚麻籽油对后续生长性能、胴体特征、胸肉脂肪酸谱和日本鹌鹑肉功能特性的影响。在一项为期 35 天的试验中,总共使用了 720 只 1 日龄日本鹌鹑,采用完全随机设计。用亚麻籽油替代葵花籽油对鹌鹑的增重和采食量没有显著影响。在整个 35 天的生长期间补充亚麻籽油显著降低了腹部脂肪的比例。在屠宰前一周向鹌鹑饲料中添加亚麻籽油可使胸肌中的 n-3 脂肪酸含量增加 4.97 倍。与葵花籽油相比,在鹌鹑的胸肌中添加亚麻籽油可降低 delta-9-去饱和酶的活性。在对照饮食中,观察到最大的血栓形成指数在胸肉中,而食用亚麻籽油可显著降低血栓形成指数。在屠宰前 21 天和 35 天向鹌鹑日粮中添加亚麻籽油可显著增加胸肌丙二醛含量。长期食用亚麻籽油对胸肉 pH 值没有显著影响,但降低了持水力。当长时间喂亚麻籽油时,胸肉的亮度增加。一般来说,在生长末期的最后一周喂养亚麻籽油可改善鹌鹑胸肉的饲料转化率和脂肪酸谱,同时对肉质特性的恶化影响最小。