Langendijk Pieter, Fleuren Marleen, van Hees Hubèrt, van Kempen Theo
Trouw Nutrition R&D, Stationsstraat 77, 3811 MH Amersfoort, The Netherlands.
Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA.
Animals (Basel). 2018 Apr 24;8(5):60. doi: 10.3390/ani8050060.
The aim of this study was to relate the course of parturition to the condition of piglets at birth, based on umbilical cord blood acid-base values, and relate the condition at birth to neonatal survival and performance up to 10 weeks of life. Data were collected from 37 spontaneous unassisted parturitions, and neonatal performance was based on observations of 516 piglets. Stillbirth rate increased from 2% in the first piglets, to 17% in piglets born 13th in the litter or later. This was aggravated in sows with longer than average stage II of parturition. Umbilical cord blood values also reflected the effect of birth order, with pH decreasing and lactate increasing in the course of parturition. Interestingly, sows that had a long expulsion stage of parturition also took longer to give birth to the first four piglets (r = 0.74), suggesting that sows with complicated parturition were already experiencing problems at the start of expulsion of piglets. Piglets with signs of asphyxia, based on umbilical blood lactate higher than 4.46 mmol/L, were slower to start suckling, had a higher risk of neonatal mortality, and had a slower growth rate over the first 10 weeks of life.
本研究的目的是根据脐带血酸碱值，将分娩过程与出生时仔猪的状况相关联，并将出生时的状况与出生后10周内的新生仔猪存活率和生长性能相关联。收集了37例自然顺产的数据，新生仔猪的生长性能基于对516头仔猪的观察。死产率从第一头出生仔猪的2%增加到同窝第13头或更靠后出生仔猪的17%。在分娩第二期长于平均时长的母猪中，这种情况更为严重。脐带血值也反映了出生顺序的影响，分娩过程中pH值下降，乳酸含量增加。有趣的是，分娩排出期长的母猪产下前四头仔猪的时间也更长（r = 0.74），这表明分娩复杂的母猪在开始排出仔猪时就已经出现问题。根据脐带血乳酸高于4.46 mmol/L判断有窒息迹象的仔猪，开始吮乳的时间较晚，新生仔猪死亡风险较高，并且在出生后的前10周内生长速度较慢。
