Petkevicius S, Bjørn H, Roepstorff A, Nansen P, Bach Knudsen K E, Barnes E H, Jensen K
Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, Frederiksberg.
Parasitology. 1995 Sep;111 ( Pt 3):395-401. doi: 10.1017/s0031182000081956.
This investigation compared the effect of two common types of diet on worm burdens and faecal egg counts of pigs inoculated with Ascaris suum and Oesophagostomum dentatum. The diets were both considered nutritionally sufficient for pigs of this age, and gave high and comparable growth rates. Pigs were inoculated with both worm species at 14 weeks of age and slaughtered 3 or 12 weeks later. At 3 weeks, A. suum larvae were numerous in the small intestine of pigs fed ground barley plus protein supplement, but were not detected from pigs fed a commercial full-constituent pelleted feed. At 12 weeks, however, average adult worm burdens were low and similar in both groups. At both slaughter times, O. dentatum worm burdens were significantly higher in pigs fed barley plus protein than in pigs given commercial feed, particularly for female worms, and the commercial diet led to worms being located further along the large intestine, and to reduced worm fecundity. The chemical composition of large intestinal contents differed significantly between pigs fed the two diets.
本研究比较了两种常见日粮对感染猪蛔虫和有齿食道口线虫的猪的蠕虫负荷和粪便虫卵计数的影响。这两种日粮在营养上都被认为足以满足该年龄段猪的需求，并且生长速度高且相当。猪在14周龄时接种这两种蠕虫，3周或12周后宰杀。在3周时，喂食磨碎大麦加蛋白质补充剂的猪的小肠中有大量猪蛔虫幼虫，但在喂食商业全成分颗粒饲料的猪中未检测到。然而，在12周时，两组的平均成虫蠕虫负荷都很低且相似。在两个宰杀时间点，喂食大麦加蛋白质的猪的有齿食道口线虫负荷均显著高于喂食商业饲料的猪，尤其是雌虫，并且商业日粮导致蠕虫在大肠中分布更远，且蠕虫繁殖力降低。喂食两种日粮的猪的大肠内容物化学成分存在显著差异。
