Dietary integration with oregano (Origanum vulgare L.) essential oil improves growth rate and oxidative status in outdoor-reared, but not indoor-reared, pigs
Dietary integration with oregano (Origanum vulgare L.) essential oil improves growth rate and oxidative status in outdoor-reared, but not indoor-reared, pigs
复制标题
DOI：
10.1111/jpn.12612
复制
发表时间：
2017-10-01
影响因子：
2.7
通讯作者：
Trabalza-Marinucci, M.
中科院分区：
文献类型：
--
作者：
Forte, C.;Ranucci, D.;Trabalza-Marinucci, M.
研究了饲粮中添加牛至油对肉猪生产性能、氧化状态、猪肉品质性状和感官性能的影响。在两项研究中，72头猪在室内或室外条件下分别饲喂对照饲粮或添加0.2%牛至精油的相同饲粮。室外饲养猪的活重、平均日增重和平均增重比均低于室内饲养猪。补充牛至叶提高了室外饲养动物的生长性能，但对室内饲养动物没有效果。血清氧化状态受饲料的影响。在牛至补充组观察到更高的氧化稳定性。至于饲养条件，数据表明，经过一段初始适应期后，猪可以更好地耐受散养养殖系统。室外饲养的猪肉pH值和a*值较高。体重受日粮和饲养条件的影响。室内饲养的对照组剪切力值高于两个添加组，与室外饲养的对照组无显著差异。在盲条件下进行的消费者测试中，与对照组相比，牛至组获得了更高的一致性分数。在知情的条件下，无论饲养系统如何，室外饲养的添加了牛至的猪的肉在一致性和总体喜欢度方面得分最高。在期望测试中，总体喜欢得分得到了相同的结果。所得数据表明，饲粮中添加牛至精油可以有效减少因户外饲养系统造成的生产性能损失，提高动物的氧化状态和肉的氧化稳定性，而不会改变肉质性状和提高消费者对肉质的看法。
The effects of a diet supplemented with oregano essential oil on performance, oxidative status, pork quality traits and sensorial properties were evaluated. In two studies, 72 pigs in indoor or outdoor conditions were assigned to either a control diet or an identical diet supplemented with 0.2% oregano essential oil. Pigs reared outdoor showed lower live weight, average daily gain and average gain:feed ratio compared to indoor pigs. The oregano supplementation improved the growth performance of the outdoor- but not the indoor-reared animals. The serum oxidative status was influenced by the diet. A higher oxidative stability was observed in the oregano-supplemented groups. As for the rearing conditions, the data suggest that after an initial adapting period, the free-range farming systems could be better tolerated by pigs. Meat derived from pigs reared outdoor showed higher pH and a* values. Lightness was influenced by both the diet and the rearing conditions. The control group reared indoor showed shear force values higher than both supplemented groups, while no differences were detected with the control group reared outdoor. In the consumer test performed under blind conditions, the oregano groups achieved higher consistency scores compared with the control. Under informed conditions, the meat derived from the oregano-supplemented pigs reared outdoor received the highest scores for consistency and overall liking regardless of the rearing system. The same result for the overall liking score was obtained in the expectation test. The data obtained showed that dietary oregano essential oil can be effective in reducing performance losses due to the outdoor-rearing system, increasing the oxidative status of the animal and oxidative stability of the meat, without modifying the meat quality traits and improving consumer perceptions of the meat quality.