Clayton H M, Duncan J L
Res Vet Sci. 1977 Jul;23(1):109-14.
Six worm-free pony foals, two to four months old, were infected with parascaris equorum eggs using three different dosage regimes and killed at either 40 or 95-100 days after infection. Coughing and a circulating eosinophilia were features of large infections from which only a small number of worms developed to maturity. In small infections a high percentage of the parasites matured in the small intestine and this was associated with unthriftiness. Pre-patent periods of 80 and 83 days were recorded.
六匹两到四个月大的无寄生虫小马驹，采用三种不同的剂量方案感染了马副蛔虫卵，并在感染后40天或95 - 100天处死。咳嗽和循环嗜酸性粒细胞增多是大量感染的特征，在此情况下只有少数蠕虫发育成熟。在轻度感染中，高比例的寄生虫在小肠内成熟，这与生长不良有关。记录到的潜隐期为80天和83天。
