摘要
Colostrum intake by newborn piglets was studied by weighing piglets every 10 min for their first 1–4 h with the sow, and their cumulative weight increases were used as estimates of colostrum intake. In seven litters, four piglets were monitored for 4 h beginning about 2 h after the birth of the first piglet in order to determine if colostrum is available continuously or released in discrete ejections. There was little synchrony between litter-mates in their intake in the first hour, but by the second hour of monitoring (starting about 3 h after farrowing began), much of the colostrum was released in discrete ejections and piglets achieved most of their intake during the few 10-min intervals when an ejection occurred. To examine the effect of birth sequence, four piglets were added to the udder each hour for 3 consecutive hours. Piglets added in the last hour showed a small but significant tendency (P < 0.05) to obtain less colostrum than those added in the middle of the sequence. In nine litters, three piglets were confined to posterior and three to anterior teats for 1.5 h to examine the effect of teat position. Those on posterior teats had slightly but significantly (P = 0.02) lower estimated intake than piglets on anterior teats. Although low-birth-weight piglets, late-born piglets, and piglets sucking only posterior teats tended to obtain less colostrum, the differences were small, and most piglets obtained an amount of colostrum consistent with normal serum immunoglobulin concentration. Key words: Piglet, colostrum, suckling behavior, milk ejection, parturition
摘要译文
通过在母猪的最初1-4小时内每10分钟称重仔猪来研究新生仔猪的初乳摄入量，并将它们的累积体重增加用作初乳摄入量的估计值。在7窝中，在第一只仔猪出生后约2小时开始监测4只仔猪4小时，以确定初乳是连续可用还是以离散的方式释放。在第一个小时摄入的同窝仔间几乎没有同步，但到第二个小时的监测（分娩开始后约3小时开始），大部分初乳在离散的喷射中释放，仔猪在摄入过程中获得了大部分摄入量。发生弹射时间隔为10分钟。为了检查出生顺序的影响，每小时将4只仔猪连续3小时加入到乳房中。在最后一小时添加的仔猪显示出较小但显着的趋势（P <0.05）以获得比在序列中间添加的初乳少的初乳。在9窝中，将3只仔猪限制在后部和3只前乳头中1.5小时以检查乳头位置的影响。后乳头的患者估计摄入量略微但显着（P = 0.02）低于前乳头的仔猪。虽然低出生体重仔猪，晚出生仔猪和仅吸吮后乳头的仔猪倾向于获得较少的初乳，但差异很小，并且大多数仔猪获得了与正常血清免疫球蛋白浓度一致的初乳量。关键词：仔猪，初乳，哺乳行为，乳汁排出，分娩
David Fraser and ; Jeffrey Rushen. Colostrum intake by newborn piglets[J]. Canadian Journal of Animal Science, 1992,72(1): 1-13