Lynch P B, O'Grady J F, Kearney P A
Ann Rech Vet. 1984;15(2):181-4.
Three separate trials are described, each involving sows ranging in parity from first to tenth. In the first trial sows were penned either in individual stalls 2.1 m X 0.6 m or individually tethered in stalls 0.6 m wide, from mating to day 110 of pregnancy. Both groups were on insulated concrete floors partially slatted. Results indicate no difference in percentage of pigs born dead or survival to weaning or in post-weaning performance of sows. In the second trial sows were kept in farrowing pens 2.4 m X 1.6 m with the sow restrained in a farrowing crate 0.6 m wide or tethered by the neck in a partial crate 0.6 m wide from day 110 of pregnancy to weaning at 30 days of age. All pens were of insulated concrete without bedding with the rear 0.6 m slatted with cast iron slats. Results indicate no effect of pen type on percentage of pigs born dead, survival to weaning or in post-weaning sow performance. In the third trial sows were housed in groups of 4 on an insulated concrete floor without bedding or in individual stalls after weaning. Boars were present in adjoining pens in both cases. Group housed animals had poorer performance due to a combination of failure to show oestrus, lower conception ratio and loss through injuries due to fighting. Those that did show oestrus had the same weaning to oestrus period as stalled sows and produced slightly (but not significantly) bigger litters.
本文描述了三项独立试验，每项试验涉及初产至经产十胎的母猪。在第一项试验中，母猪从配种到妊娠第110天，要么饲养在2.1米×0.6米的个体栏中，要么单独栓系在0.6米宽的栏中。两组母猪都饲养在部分铺设板条的隔热混凝土地面上。结果表明，死胎率、断奶成活率或母猪断奶后性能方面没有差异。在第二项试验中，母猪从妊娠第110天到30日龄断奶期间，饲养在2.4米×1.6米的产仔栏中，母猪被限制在0.6米宽的产仔箱中，或者在部分0.6米宽的产仔箱中通过颈部栓系。所有产仔栏均为无垫料的隔热混凝土结构，后部0.6米铺设铸铁板条。结果表明，产仔栏类型对死胎率、断奶成活率或断奶后母猪性能没有影响。在第三项试验中，母猪断奶后，4头一组饲养在无垫料的隔热混凝土地面上，或者饲养在个体栏中。两种情况下，相邻栏中都有公猪。群居的母猪由于出现发情失败、受胎率较低以及打斗受伤造成损失等综合因素，性能较差。那些表现出发情的母猪，其断奶至发情间隔与单栏饲养的母猪相同，产仔数略多（但不显著）。
