Protein restriction during pregnancy affects postnatal growth in swine progeny.
Protein restriction during pregnancy affects postnatal growth in swine progeny.
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怀孕期间限制蛋白质会影响猪后代的产后生长。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
R. Maurer
中科院分区：
文献类型：
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作者：
P. Schoknecht;W. Pond;H. Mersmann;R. Maurer
怀孕期间蛋白质缺乏会影响胎儿发育。胎儿最容易受到母体蛋白质缺乏及其对新生儿生长的影响的关键时期尚不清楚。因此，我们研究了妊娠早期和晚期以及整个妊娠期间限制蛋白质饮食对猪从出生到上市体重生长的影响。母猪在整个妊娠期间饲喂对照日粮(13%蛋白质)或蛋白质限量日粮(0.5%蛋白质)，或在d1~44d饲喂蛋白质限量日粮，然后在d1~81d饲喂对照日粮或对照日粮，然后再饲喂蛋白质限量日粮至足月。试验一测定初生重，每日粮组仔猪4周断奶12头，提高到市场体重。在整个妊娠期间饲喂限制蛋白质的饮食可以减少出生和屠宰体重，而限制蛋白质和限制蛋白质的对照组与对照组相比只降低了新生儿的体重。限制蛋白质组仔猪的屠体瘦肉率指数有所降低，但对屠体脂肪没有影响。在试验2中，对照组和蛋白限制组每窝产仔6头，与另一组母猪杂交饲养3头/窝。断奶后4wk，每组4头，分别饲喂至8wk。饲喂蛋白质限制日粮的对照和对照仔猪出生时体重相似，但限制蛋白质对照母猪饲养的仔猪在断奶时的体重往往比对照母猪饲养的小仔猪要轻。断奶后，这些仔猪的采食量比其他组大，到8wk时体重没有差异。
Protein deficiency during pregnancy affects fetal development. The critical period, when the fetus is most susceptible to maternal protein deficiency and its effect on neonatal growth, is unknown. Therefore, we studied the effect of a protein-restricted diet during early and late pregnancy and throughout pregnancy on growth of pigs from birth to market weight. Sows were fed a control (13% protein) or protein-restricted (0.5% protein) diet throughout pregnancy or protein-restricted diet from d 1 to 44, then control diet to term or control diet from d 1 to 81, then the protein-restricted diet to term. In Experiment 1, birth weights were measured, and 12 pigs/diet group were weaned at 4 wk and raised to market weight. Feeding the protein-restricted diet throughout pregnancy reduced birth and slaughter weights, whereas the control followed by protein-restricted and protein-restricted followed by control diets reduced only birth weight relative to controls. Indices of carcass lean were reduced in the protein-restricted piglets, with carcass fat not affected. In Experiment 2, control and control-protein-restricted litters were reduced to six piglets and 3/litter cross-fostered to a sow of the other treatment group. After weaning at 4 wk, 4 piglets/group were individually fed to 8 wk. The control and control followed by protein-restricted diet fed piglets had similar weights at birth, but piglets raised by a control-protein-restricted sow tended to weight less at weaning than their littermates raised by a control sow. After weaning, these piglets had greater feed intakes relative to other groups and there were no weight differences by 8 wk.(ABSTRACT TRUNCATED AT 250 WORDS)