不同产次限位饲养母猪行为、皮质醇及神经递质差异分析  

Analysis of Behavior,Cortisol and Neurotransmitter in Confined Sows with Different Parity

作　　者：邢雪静 于浪潮 尹国安[1,2] XING Xuejing;YU Langchao;YIN Guoan(Heilongjiang Bayi Agricultural University,Daqing Heilongjiang 163000,China;Heilongjiang Key Laboratory of Effcient Utilization of Feed Resources and Nutrition Manipulation in Cold Region,Daqing 163319,China)

机构地区：[1]黑龙江八一农垦大学动物科技学院,黑龙江大庆163000 [2]黑龙江省寒区饲料资源高效利用与营养调控重点实验室,黑龙江大庆163319

出　　处：《家畜生态学报》2022年第7期55-60,共6页Journal of Domestic Animal Ecology

基　　金：国家自然科学基金面上项目(31972607)。

摘　　要：繁殖母猪的限位饲养仍然比较普遍,其福利问题应受到足够的重视。为了研究不同产次限位饲养母猪的行为及神经生理的变化规律,本试验选用初产、三产、六产健康长×大二元妊娠母猪各12头,对姿态和口吻部行为进行观察并测定血液皮质醇和神经递质浓度。结果表明,三产和六产母猪俯卧行为显著高于初产母猪,而侧卧、站立和犬坐行为显著低于初产母猪(P<0.05);口吻部行为,只有无食咀嚼在各产次限位母猪之间差异极显著(P<0.01),随产次而增多;六产母猪五羟色胺和多巴胺浓度显著高于初产母猪(P<0.05),六产母猪血清皮质醇极显著高于初产母猪(P<0.01),六产母猪血清皮质醇浓度有高于三产母猪的趋势(P=0.051)。总之,限位环境饲养下的母猪,产次的变化会导致行为表达、血清皮质醇和神经递质的变化。研究结果初步探明了限位饲养对不同产次母猪的行为生理消极影响的变化规律,有助于对限位母猪情感状态的变化研究,并对母猪的福利饲养具有重要的参考价值。Since crates for breeding sows are commonly used,the ensuing welfare issues should be given sufficient attention.Aiming to compare the behavioral and neurophysiological changes of confined sows with different parity,36 first,third or sixth-parity Landrace Large White sows were selected to observe postures and oral behaviors and cortisol,serotonin(5-HT)and dopamine(DA)in blood were measured.The results showed that the lying behavior of the 3rd and 6th parity sows was significantly frequent than that of the first parity sows,whereas the lateral lying,standing and sitting behavior was remarkably less than that of the first parity sows(P<0.05).Vacuum chewing of confined sows significantly increased with the parities(P<0.01).The 5-HT and DA concentrations of sixth-parity sows were significantly higher than those of gilts(P<0.05),while the serum cortisol in sixth-parity sows was extremely higher than that of gilts(P<0.01).The serum cortisol of sixth-parity sows tends to be higher than that of third-parity sows(P=0.051).In conclusion,the confined environment of sows leads to changes in behaviors,serum cortisol and neurotransmitters with parities.The finding of the negative effect of confining on the behavior and physiology of sows is helpful to the study of the emotional state of sows,and it is an important reference for the study on the welfare of sows.

关 键 词：妊娠母猪 行为 皮质醇 神经递质 限位栏 

分 类 号：S828.91[农业科学—畜牧学]