More Simon J, Lee Jenny-Ann L M, Lañada Eugene B, Taveros Alberto A, Cotiw-an Basito S
School of Veterinary Science, The University of Queensland, PO Box 125, Kenmore 4069, Australia.
Prev Vet Med. 2005 Aug 12;70(1-2):115-31. doi: 10.1016/j.prevetmed.2005.02.014. Epub 2005 Apr 18.
We conducted a longitudinal study to obtain detailed baseline information about the health and productivity of unweaned piglets raised by smallholder pig raisers in the Philippines, and to identify constraints and opportunities to smallholder-piglet production. At two sites in the Philippines, we collected data about 242 litters from 173 sows in 102 herds during on-farm visits over 12-18 months. Preweaning mortality at the northern and southern sites was 17 and 9%, respectively. Of the piglet deaths at the northern site, 49% occurred within 24h of birth. Pig raisers used few of the recognised interventions known to reduce neonatal piglet mortality, although >50% of litters were given iron injections at the northern site and kept in a farrowing pen with a barrier at the southern site. Creep feeding was more common at the northern site but the nutritive value of the feeds given to piglets was low. We used repeated-measures and time-to-event analyses. Our results suggest that targeted extension (addressing, in particular, management issues relating to neonatal piglets) can contribute to increased productivity of unweaned piglets.
我们开展了一项纵向研究，以获取菲律宾小农户饲养的未断奶仔猪的健康和生产力方面的详细基线信息，并确定小农户仔猪生产的制约因素和机遇。在菲律宾的两个地点，我们在12至18个月的农场走访期间，收集了来自102个猪群中173头母猪的242窝仔猪的数据。北部和南部地点的断奶前死亡率分别为17%和9%。在北部地点的仔猪死亡中，49%发生在出生后24小时内。尽管北部地点超过50%的仔猪窝接受了补铁注射，南部地点的仔猪饲养在有围栏的产仔栏中，但养猪户很少采用已知的可降低新生仔猪死亡率的干预措施。补饲在北部地点更为常见，但给仔猪的饲料营养价值较低。我们采用了重复测量和事件发生时间分析方法。我们的结果表明，有针对性的推广（特别是解决与新生仔猪相关的管理问题）有助于提高未断奶仔猪的生产力。
