Love R J, Peacock A J, Evans G
Department of Animal Health, Camden, New South Wales.
Aust Vet J. 1990 Jun;67(6):223-6. doi: 10.1111/j.1751-0813.1990.tb07766.x.
Increasing the level of cottonseed meal (CSM) in sow diets from less than 5% to 10% increased the incidence of premature farrowings (gestation length less than 111 days) from 1.1% to 2.7% (p less than 0.001) and reduced the mean gestation length from 114.07 +/- 1.53 to 113.70 +/- 1.59 days (p less than 0.0001). Survival of piglets born prematurely was poor. After removal of CSM from the diet there was a residual effect lasting several weeks before the gestation length returned to normal. Experimental feeding of diets containing 20% and 40% CSM to small groups of sows caused significant shortening of gestation length and 3 of 26 sows fed 40% CSM farrowed prematurely. The mechanism by which CSM causes this effect has yet to be determined.
将母猪日粮中棉籽粕（CSM）的含量从低于5%提高到10%，早产（妊娠期长度小于111天）的发生率从1.1%增加到2.7%（p小于0.001），平均妊娠期长度从114.07±1.53天缩短至113.70±1.59天（p小于0.0001）。早产仔猪的存活率很低。从日粮中去除CSM后，在妊娠期长度恢复正常之前，有持续数周的残留效应。给小群母猪饲喂含有20%和40%CSM的日粮会导致妊娠期长度显著缩短，26头饲喂40%CSM的母猪中有3头早产。CSM产生这种影响的机制尚未确定。
