Easter R A, Baker D H
J Nutr. 1976 May;106(5):636-41. doi: 10.1093/jn/106.5.636.
Based upon nitrogen retention and urinary excretion of orotic and citric acid, previous experiments have shown that the gravid gilt does not require a dietary source of arginine during late gestation. This experiment was designed to evaluate effects of feeding an arginine-free diet for a major portion of gestation. Three diets, 0% L-arginine, 0.38% L-arginine and a fortified corn-soybean meal control, were fed to two litter-mate trios from day 30 of gestation until parturition. The experimental diets contained crystalline amino acids as the sole source of nitrogen and provided 12.6% crude protein equivalent. All gilts received 2 kg of diet daily and were housed throughout the 84-day feeding period in metabolism crates. Nitrogen retention tended to increase with advancing pregnancy, but was uninfluenced by dietary treatment. Averaged across all three gestational trimester periods, nitrogen retention was 11.2, 9.7 and 12.0 g/day for the 0% arginine, 0.38% arginine and cor-soybean meal diet, respectively. Urinary excretion of orotic acid was not significantly affected by arginine intake. Moreover, number and weight of pigs at birth and weaning were unaltered by dietary treatment. Thus, it is evident that satisfactory reproductive response can be achieved with gravid swine fed an arginine-free diet during the last 84 days of pregnancy.
基于氮潴留以及乳清酸和柠檬酸的尿排泄情况，先前的实验表明，妊娠后期的妊娠母猪不需要日粮中的精氨酸来源。本实验旨在评估在妊娠大部分时间饲喂无精氨酸日粮的效果。从妊娠第30天到分娩，将三种日粮（0% L-精氨酸、0.38% L-精氨酸和强化玉米-豆粕对照日粮）喂给两组同窝三胞胎母猪。实验日粮包含结晶氨基酸作为唯一的氮源，并提供相当于12.6%粗蛋白的营养。所有母猪每天采食2千克日粮，并在整个84天的饲喂期内饲养在代谢笼中。氮潴留量往往随着妊娠进展而增加，但不受日粮处理的影响。在所有三个妊娠阶段进行平均计算，0%精氨酸、0.38%精氨酸和玉米-豆粕日粮的氮潴留量分别为11.2、9.7和12.0克/天。乳清酸的尿排泄量不受精氨酸摄入量的显著影响。此外，出生和断奶时仔猪的数量和体重不受日粮处理的影响。因此，很明显，在妊娠最后84天饲喂无精氨酸日粮的妊娠母猪能够获得令人满意的繁殖性能。
