CAJ | 학술논문

本试验旨在研究饲料添加亚麻油(linseed oil,LO)对育肥猪胴体指标、肉质及脂肪组织脂肪酸组成的影响.选用平均体质量为63 kg左右的健康大白猪84头(其中21头阉公猪),按体质量相近、性别比例一致原则随机分为3组,每组设4个重复,每个重复7头猪(1或2头阉公猪).3个处理口粮为玉米-豆粕型日粮,分别添加0%、1.5%和3.0%LO,饲养试验时间为50 d.结果显示,与对照组相比,日粮中添加LO对猪胴体和肉晶质指标均没有显著影响(P＞0.05);日粮中添加LO显著提高皮下脂肪的α-亚麻酸(ALA)(P＜0.01)、EPA(P＜0.01)、DPA(P＜0.05)含量,以及多不饱和脂肪酸(PUFA)(P＜0.05)和n-3PUFA(P＜0.01)总含量,同时显著降低花生四烯酸(P＜0.01)和二十二碳四烯酸(P＜0.01)含量,而对n-6PUFA总含量无显著影响(P＞0.05).结果表明,猪不但可以直接沉积α-亚麻酸,而且能将其进行进一步延长和脱饱和;饲料中添加1. 5% LO可将猪皮下脂肪n-6:n-3PUFA比值降至4.1:1,接近人类健康饮食推荐水平,而日粮中添加3.0%LO则能降低皮下脂肪n-6:n-3PUFA比值至2.5:1,大大增加了猪脂肪组织的保健价值.
본시험지재연구사료첨가아마유(linseed oil,LO)대육비저동체지표、육질급지방조직지방산조성적영향.선용평균체질량위63 kg좌우적건강대백저84두(기중21두엄공저),안체질량상근、성별비례일치원칙수궤분위3조,매조설4개중복,매개중복7두저(1혹2두엄공저).3개처리구량위옥미-두박형일량,분별첨가0%、1.5%화3.0%LO,사양시험시간위50 d.결과현시,여대조조상비,일량중첨가LO대저동체화육정질지표균몰유현저영향(P＞0.05);일량중첨가LO현저제고피하지방적α-아마산(ALA)(P＜0.01)、EPA(P＜0.01)、DPA(P＜0.05)함량,이급다불포화지방산(PUFA)(P＜0.05)화n-3PUFA(P＜0.01)총함량,동시현저강저화생사희산(P＜0.01)화이십이탄사희산(P＜0.01)함량,이대n-6PUFA총함량무현저영향(P＞0.05).결과표명,저불단가이직접침적α-아마산,이차능장기진행진일보연장화탈포화;사료중첨가1. 5% LO가장저피하지방n-6:n-3PUFA비치강지4.1:1,접근인류건강음식추천수평,이일량중첨가3.0%LO칙능강저피하지방n-6:n-3PUFA비치지2.5:1,대대증가료저지방조직적보건개치.
This experiment was conducted to study the effect of Linseed oil (LO) on meat quality and fatty acids composition of adipose tissue in finishing pigs. Eighty-four Large White pigs(21 barrows), average weight of 63 kg, were randomly assigned into three dietary treatments with four replicates and seven pigs (1 or 2 barrows)with each replicate. The groups received one of the three dietary treatments: 0%,1.5% and 3.0% LO, respectively. The feeding trial lasted for 50 days. There was no significant effect of LO added into diets on meat quality and carcass traits(P＞0. 05);The inclusion of LO in finishing pig diets significantly increased α-linolenic acid (ALA) (P＜0. 01), EPA(P＜0. 01) and DPA(P＜0. 05)levels,and total n-3 polyunsaturated fatty acid (PUFA) (P＜0. 01) concentration, and significantly reduced the levels of C20:4 n-6(P＜0. 01)and C22:4 n-6(P＜0. 01)in adipose tissue, but the total n-6 PUFA content was not significantly affected by the diet(P＞0. 05). These results indicated that pigs could not only deposit α-linolenic acid into adipose tissue, but also elongate and desaturate it; the 1.5 LO diet produced an n-6 : n-3PUFA ratio in the subcutaneous fat of 4. 1 : 1, close to the recommended ratio for the human diet, and the ratio of 2.5 : 1 for the 3.0% LO diet, which can significantly improve the health value of adipose tissue.