Kaiser Marianne, Herskin Mette S, Jacobsen Stine, Andersen Pia H, Nielsen Mai Britt Friis, Bækbo Poul, Jacobson Magdalena
Department of Animal Science, Aarhus University, 8830, Tjele, Denmark.
Department of Veterinary Clinical Sciences, Copenhagen University, 2630, Taastrup, Denmark.
Porcine Health Manag. 2022 May 2;8(1):18. doi: 10.1186/s40813-022-00260-3.
To investigate if specific sow and piglet behavioral characteristics could be used diagnostically, this case-cohort study of the behavior of sows and piglets during the periparturient period (from 24 h before the birth of first piglet to 24 h after the birth of last piglet) was conducted. Data included 32 sows diagnosed with PDS (PDS+) vs. 37 healthy matched controls (PDS-) and their litters.
A significant change from active behavior with many postural changes to a more passive behavior was noted in connection with parturition. Sow nesting behavior was less frequent in PDS+ sows compared to PDS- sows during (p = 0.04) and after parturition (p = 0.0004). No difference was found between PDS+ and PDS- in the number of postural changes, interval from last time standing to the birth of the first piglet, interval from last time eating/drinking to the birth of the first piglet, interval from the birth of the first piglet to the sow standing after farrowing, interval from the birth of the last piglet until eating/drinking, occurrence of bar biting, or frequency or duration of eating/drinking during the observation period. Piglets of PDS+ sows stayed outside the creep areas more often than piglets of PDS- sows (p < 0.0001), but there was no difference in the mean number of piglets observed massaging the udder every 10 min.
These results confirm that sow behavior changes from active before parturition to more passive after parturition. Being diagnosed with PDS affected the periparturient behavior of sows as well as their piglets. The observed reduction in nesting behavior in PDS+ sows may suggest that a highly motivated piglet-oriented behavior was affected. However, classical sickness behaviors like lethargy and passivity seem to be poor markers for PDS.
为了研究特定的母猪和仔猪行为特征是否可用于诊断，开展了这项病例队列研究，观察围产期（从第一头仔猪出生前24小时至最后一头仔猪出生后24小时）母猪和仔猪的行为。数据包括32头被诊断为产后抑郁综合征（PDS+）的母猪及其仔猪，以及37头健康的匹配对照母猪（PDS-）及其仔猪。
观察到与分娩相关的行为从有许多姿势变化的活跃行为显著转变为更被动的行为。与PDS-母猪相比，PDS+母猪在分娩期间（p = 0.04）和分娩后（p = 0.0004）筑巢行为较少。PDS+和PDS-母猪在姿势变化次数、从最后一次站立到第一头仔猪出生的间隔、从最后一次进食/饮水到第一头仔猪出生的间隔、从第一头仔猪出生到分娩后母猪站立的间隔、从最后一头仔猪出生到进食/饮水的间隔、咬栏的发生率，或观察期内进食/饮水的频率或持续时间方面均未发现差异。PDS+母猪的仔猪比PDS-母猪的仔猪更常待在保温区外（p < 0.0001），但每10分钟观察到的仔猪按摩乳房的平均数量没有差异。
这些结果证实，母猪的行为从分娩前的活跃转变为分娩后的更被动。被诊断为产后抑郁综合征会影响母猪及其仔猪的围产期行为。观察到PDS+母猪筑巢行为减少可能表明以仔猪为导向的高度积极性行为受到了影响。然而，嗜睡和被动等典型的疾病行为似乎不是产后抑郁综合征的良好指标。
