ABSTRACT

The objective of the present study was to evaluate the biological control of nematodes in young ewes receiving the fungi Duddingtonia flagrans (AC001) and Monacrosporium thaumasium (NF34) orally. The subjects were 40 Texel sheep, all female, between 12 and 24 months of age. At the beginning of the experiment, all animals received an oral dose of ivermectin. After 14 days, the animals were separated in four homogeneous groups of 10 animals: Group 1 received 3 g/10 kg of pellets containing mycelium of AC001 body weight twice a week; Group 2 received 3 g/10 kg of pellets containing mycelium of NF34 body weight twice a week; Group 3 received two doses of ivermectin (0.2 mg/kg of live weight) two and five months after the beginning of experiment (in the months of December and March) and Group 4, control, was untreated. Feces of each animal were collected weekly and every 14 days approximately 500 g of pasture crops were harvested of each pickets where the groups were located. The results show that AC001 and NF34 were efficient in reducing egg count per gram of feces (P < 0.05) and the count of L₃ in pastures. At the end of the experiment, the group of animals treated with AC001 presented 17.2 kg of weight gain accumulated in relation to other experimental groups. The fungi D. flagrans (AC001) and M. thaumasium (NF34) were efficient in the control of gastrointestinal nematodes in young ewes, promoting a decreased recurrence of infection, reflecting directly on the weight gain.

摘要

本研究的目的是评估在年轻母羊接收真菌线虫的生物控制Duddingtonia flagrans（AC001）和单顶孢thaumasium（NF34）口服。研究对象为40至12个月大的Texel绵羊，均为雌性。在实验开始时，所有动物都口服伊维菌素。14天后，将动物分成10只动物的四个同质组：第1组每周两次接受3 g / 10 kg含有AC001体重菌丝体的小球；第2组每周两次接受3 g / 10 kg含有NF34体重菌丝体的小丸。第3组在实验开始后两个月和五个月（在12月和3月）接受了两剂伊维菌素（0.2 mg / kg活重），而第4组未接受对照。每周收集每只动物的粪便，每14天从组中所放置的每个纠察队中收获大约500克的牧场作物。P  <0.05）和牧场中L ₃的数量。在实验结束时，与其他实验组相比，用AC001处理的动物组的体重增加了17.2公斤。鞭毛真菌D.flagrans（AC001）和M. thaumasium（NF34）可有效控制年轻母羊的胃肠道线虫，促进感染复发的减少，这直接反映了体重的增加。