Peri-parturient rise in faecal strongyle egg counts of different genotypes of sheep in North Sumatra, Indonesia.
Faecal strongyle egg counts were monitored in peri-parturient ewes and dry ewes grazing in a rubber plantation in North Sumatra, Indonesia. A significant rise in faecal egg counts was observed during the post-parturient period. Haemonchus contortus was the dominant species in the faecal cultures of the lactating ewes. The intensity of the peri-parturient rise was affected by the genotype of the sheep, which were the local Sumatra and its F1 crosses with St. Croix, Barbados Blackbelly and Java Fat-tail. The peri-parturient rise in egg counts was highest in Sumatra and lowest in the Barbados Blackbelly x Sumatra cross. A significant effect of litter size on the peri-parturient rise was also demonstrated. These findings are discussed in relation to the epidemiology and control of gastrointestinal nematodes in the humid tropics.
Romjali
E
E
Research Institute for Animal Production, Sei Putih, North Sumatra, Indonesia.
Dorny
P
P
Batubara
A
A
Pandey
V S
VS
Gatenby
R M
RM
D000818:Animals; D005243:Feces / Q000469:parasitology; D005260:Female; D005838:Genotype; D006188:Haemonchiasis / Q000453:epidemiology / Q000662:veterinary*; D006189:Haemonchus / Q000302:isolation & purification; D007214:Indonesia; D007774:Lactation; D010270:Parasite Egg Count; D011247:Pregnancy; D015597:Pregnancy Complications, Parasitic / Q000453:epidemiology / Q000662:veterinary*; D011644:Puerperal Disorders / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D012756:Sheep / Q000235:genetics*; D012757:Sheep Diseases; D014252:Trichostrongyloidiasis / Q000453:epidemiology / Q000662:veterinary*