De Marzo Davide, Bozzo Giancarlo, Ceci Edmondo, Losacco Caterina, Dimuccio Michela Maria, Khan Rifat Ullah, Laudadio Vito, Tufarelli Vincenzo
Department of Precision and Regenerative Medicine and Jonian Area (DiMePRe-J), Section of Veterinary Science and Animal Production, University of Bari 'Aldo Moro', Valenzano, 70010 Bari, Italy.
Department of Veterinary Medicine, University of Bari 'Aldo Moro', Valenzano, 70010 Bari, Italy.
Life (Basel). 2023 Jan 18;13(2):275. doi: 10.3390/life13020275.
The hypothesis that adding omega-3 oil to feedlot pellets will improve the meat's favourable n-3 PUFA composition was tested in this experiment. Therefore, we evaluated the productive traits and modification of the composition of n-3 PUFA of (LL) muscle in growing lambs supplemented with microencapsulated omega-3 oil (MEOIL) in pelleted total mixed rations (TMR). Thirty six one month old Valle del Belice male lambs (14.04 ± 0.1 kg) were randomly distributed to one of the three dietary treatments ( = 12 lambs each) and provided the supplemented diets up to 14 weeks of age: 1. control (CON) pelleted TMR without omega-3 oil supplementation; 2. omega-3 oil fortified pelleted TMR at 1% (MEOIL1) supplementation; and 3- Omega-3 oil fortified pelleted TMR at 3% (MEOIL3) supplementation. Supplementing MEOIL at both levels in diet positively impacted ( < 0.05) body weight (BW) and feed efficiency. At the end of feeding period, most carcass quality traits did not vary significantly ( > 0.05) among groups, with the exception of carcass dressing and loin yield at both levels of MEOIL. The color and physical traits of LL muscle were affected by MEOIL supplementation ( < 0.05), with no significant change in chemical characteristics. Fatty acids composition of meat in term of linolenic, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were significantly ( < 0.05) influenced by both levels of MEOIL. It was concluded that the tested microencapsulated omega-3 oil preparation may be included at 1% in lamb diet for increasing unsaturated fatty acids in meat without any detrimental effects on lamb productivity.
本实验检验了在育肥颗粒饲料中添加ω-3油会改善肉类有益的n-3多不饱和脂肪酸（PUFA）组成这一假设。因此，我们评估了在颗粒全混合日粮（TMR）中添加微囊化ω-3油（MEOIL）的生长羔羊中（LL）肌肉的生产性能以及n-3 PUFA组成的变化。将36只1月龄的瓦莱德尔贝利切雄性羔羊（14.04±0.1千克）随机分配到三种日粮处理之一（每组 = 12只羔羊），并在14周龄前提供补充日粮：1. 对照（CON）颗粒TMR，不添加ω-3油；2. 添加1%（MEOIL1）的ω-3油强化颗粒TMR；3. 添加3%（MEOIL3）的ω-3油强化颗粒TMR。日粮中添加这两种水平的MEOIL均对体重（BW）和饲料效率产生了积极影响（P<0.05）。在饲养期结束时，除了两种水平的MEOIL下的胴体屠宰率和腰肉产量外，大多数胴体品质性状在各组之间没有显著差异（P>0.05）。LL肌肉的颜色和物理特性受MEOIL添加的影响（P<0.05），化学特性没有显著变化。两种水平的MEOIL均对肉中以亚麻酸、二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）衡量的脂肪酸组成产生了显著影响（P<0.05）。得出的结论是，经测试的微囊化ω-3油制剂可以以1%的比例包含在羔羊日粮中，以增加肉中的不饱和脂肪酸，而对羔羊的生产性能没有任何不利影响。
