智能化大群饲养与限位栏饲养对妊娠母猪心理应激指标的影响

Effects of Intelligent Mass Breeding and Limiting Bar Rearing on Psychological Stress Index of Pregnant Sows

[目的]通过对母猪心理应激指标唾液皮质醇水平和淀粉酶含量的检测,探索自主研发的智能化母猪大群饲养模式与限位栏饲养模式下,活动空间对妊娠母猪心理状态造成的的影响,确立一种符合动物福利要求的母猪饲养模式。[方法]试验选用二产大长母猪58头,随机分成两组,对照组28头,采用传统的限位栏饲养,每头饲养面积1.43 m^2,试验组30头,采用智能化大群饲养,每头饲养面积2.6 m^2,其余饲养管理一致。于试验的1、3、8、10、15周及分娩前1周的第1天采集试验动物的唾液样本,检测唾液中皮质醇水平和淀粉酶含量。[结果]2种饲养模式下母猪的唾液皮质醇和淀粉酶均表现出相反的分泌趋势。第8周前,自主研发的智能化大群饲养模式下母猪的唾液皮质醇水平显著高于限位栏饲养,第8、10周2种饲养模式下试验母猪皮质醇水平无显著差异,第10周之后,大群饲养试验母猪皮质醇水平显著低于限位栏饲养的试验母猪。第3周前限位栏饲养的试验母猪淀粉酶含量显著高于大群饲养,第3周开始呈现相反情况,2种饲养模式下大群饲养母猪淀粉酶含量显著高于限位栏饲养的试验母猪。[结论]智能化大群饲养模式更利于妊娠母猪的身心健康,可推广应用。

[ Objective ] Psychological stress indexes of salivary cortisol and amylase content of sows were determined , effect of activity space on psychological status of pregnant sows was explored by using different feeding patterns that independent research and development mass breeding mode and limit bar feeding conditions,a breeding model was established according to animal welfare. [ Method]58 second childbirth large long sows were selected, they were randomly divided into two groups, control group 28 , using the traditional limit bar feeding, feeding area per head was 1.43 m^2 ;test group 34,using mass breeding,breeding area per head was 2.6 m^2 ,the rest of feeding and management was same. Saliva samples from first experimental animals were collected at lweek,3 weeks,8 weeks, 10 weeks, 15 weeks and 1 weeks before parturition,and cortisol levels and amylase levels in saliva were measured. [ Result ] Salivary cortisol and amylase showed the opposite trend of secretion in the 2 feeding pat-terns. Eighth weeks ago,sows salivary cortisol level of independent research and development mass breeding mode was significantly higher than that of the limit bar feeding, there was no significant difference between the eighth and the 10th week, sows cortisol levels after tenth weeks of feeding sows cortisol levels were significantly lower than that of the sow reared a limit test. Third week ago, the test sows amylase content was sig-nificantly higher than that of limit bar feeding,it showed the opposite situation in third weeks,2 kinds of feeding mode of feeding sows amylase content was significantly higher than that of sow reared a limit test. [ Conclusion ] Mass breeding mode was beneficial to physical and mental health of sows ,it can be applied.