Effects of dietary oregano essential oil and vitamin E supplementation onmeat quality, stress response and intestinal morphology in pigs following transportstress

The Journal of Veterinary Medical Science

Ting ZHANG¹  Hong Kui WEI¹  Yi ZOU¹  Xiao Ming HU¹  Zhong Xin ZHOU¹  Yuan Fei ZHOU²  Jian PENG² 

[1] Department of Animal Nutrition and Feed Science,College of Animal Science and Technology, Huazhong Agricultural University, Wuhan430070, P. R. China;The Cooperative Innovation Center for Sustainable PigProduction, Wuhan 430070, P. R. China

关键词: intestinal morphology;    meat quality;    oregano essential oil;    pig;    transport stress;   

DOI  :  10.1292/jvms.16-0576

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

This study investigates the effects of dietary oregano essential oil (OEO) and vitamin E(Vit E) supplementation on meat quality, stress response and intestinal morphology in pigsfollowing transport stress. A total of 288 finishing pigs were randomly assigned to threegroups a basal diet or a basal diet supplemented either with 200 mg/kg Vit E or 25 mg/kgOEO. After a 28-day feeding trial, total of 132 finishing pigs according diet andtransport stress were assigned to one of four treatment groups 1) control treatmentwithout transport stress (Control group), 2) control treatment with 5-hr transport stress(Negative group), 3) Vit E treatment with 5-hr transport stress and 4) OEO treatment with5-hr transport stress. Transport stress pigs had lower muscle 45 min pH (pHi) and higherdrip loss than control pigs. Dietary OEO and Vit E supplementation significantly increased45min pH under transport stress, and the OEO groups produced lower 24-hr drip loss values(P<0.05) than that of pigs from the negative group. TheOEO-supplemented pigs showed decreased serum levels of creatine kinase (CK) and cortisol(P<0.05), and decreased Hsp 27 (heat shock protein27) and Hsp 70 (heat shock protein 70) mRNA expression in the muscle(P<0.05). Additionally, histological analysis revealed intestinalepithelial damage in transport stress pigs that was reversed by dietary supplementationwith OEO. In conclusion, supplementation with dietary OEO may be superior tosupplementation with dietary Vit E in alleviating the meat quality, stress response andintestinal morphology of pigs after challenge due to transportation stress.

【 授权许可】

Unknown