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Can Dietary Pomegranate Peels Reduce Stress Responses Associated with Group Mixing of Holstein Beef Calves？

Journal of Pharmacy and Pharmacology 2014年第7期2卷 404-415页

作者： Sarah Weyl-Feinstein Alla Orlov Moran Yishay Rotem Agmon Machteld Steensels Vered Sibony Ilan Halachmi Ido Izhaki ariel shabtay Department of Ruminant Science Institute of Animal Science Newe Ya 'ar Research Center Agricultural Research Organization Ramat Yishay 30095 Israel Department of Evolutionary and Environmental Biology Faculty of Sciences University of Haifa Haifa 3498838 Israel Institute of Agricultural Engineering-Agricultural Research Organization (ARO)-The Volcani Center Bet-Dagan 50250 Israel

The study investigated whether dietary CPE （concentrated pomegranate peel extract） may mitigate the negative effects associated with group mixing prior to marketing and enhance beef meat quality. Twenty-two bull calves were reared in triplets and divided to control （n = 9） and CPE-treated （n = 13） groups. CPE was supplemented during eight months of rearing, and calves were mixed 34 d prior to marketing to control and treatment groups. Calves were monitored for weight gain, rumination, activity, metabolic and oxidative stress responses, Finally, meat quality traits were examined. The results find that pre-mixing activity （P 〈 0.0001）, non-esterifies fatty acids （P = 0.02） and plasma testosterone （P = 0.005） levels were higher in the treatment group. Following mixing, activity （P 〈 0.0001 ） and plasma anti-oxidative capacity （P = 0.05） increased in the treatment compared to the control group. In spite of the above, dietary supplementation of CPE didn＇t reveal improvement of meat quality parameters by means of meat pH and shelf life It indicated that improved serum anti-oxidant capacity in the CPE calves was not sufficient to prevent the mixing effects on meat quality. A combined CPE concentration and mixing management should be examined in order to reduce mixing related effects on meat quality.

关键词： Bull calves group-mixing CPE anti-oxidative capacity non-esterified fatty acid testosterone.

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