Abstract
Four grass plots were sequentially contaminated with goat faeces containing known numbers of unembryonated eggs of predominantly Haemonchus contortus and Trichostrongylus spp. between October 1982 and April 1983. Four other plots were similarly contaminated with sheep faeces between February and May 1987. An additional plot was repeatedly contaminated with sheep faeces from February to April 1987. Populations of free-living stages in faeces and of infective larvae (L3) in the herbage were subsequently monitored until the end of April and June of 1983 and 1987 respectively. During February and May 1987 two control cultures of sheep faeces were incubated in the laboratory at 25°C–30°C and at a constant temperature of 50°C and the free-living development was also monitored. L3 developed very readily in the faeces cultured at 25°C–30°C and in those spread on a grass plot in October, at the end of the wet season, but developed less on the plot contaminated in May at the start of the wet season. Worm eggs in faeces deposited on plots during the hot dry season (December to April) or incubated at 50°C died and disintegrated after 24–48 h exposure to the high environmental temperatures. The results indicate that it is unlikely that gastrointestinal nematodes of sheep and goats can develop or survive on open pasture during the dry season in the Nigerian derived savanna zone.
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References
Andersen, F.L., Levine, N.D. and boatman, P.A., 1970. Survival of third stage Trichostrongylus colubriformis larvae on pasture. Journal of Parasitology, 56, 209–232
Chiejina, S.N., 1982. Evaluation of modified Baerman apparatus for the recovery of infective trichostrongylid larvae from herbage samples. Journal of Helminthology, 56, 105–109
Chiejina, S.N., 1987. Some parasitic diseases of intensively managed West African Dwarf sheep and goats in Nsukka, eastern Nigeria. British Veterinary Journal, 143, 264–272
Chiejina, S.N. and Emehelu, C.O., 1984. Seasonal changes in pasture populations of infective larvae of gastrointestinal nematodes of cattle in eastern Nigeria. Research in Veterinary Science, 37, 144–147
Chiejina, S.N. and Fakae, B.B., 1984. The development and survival of infective larvae of gastrointestinal nematode parasites of cattle on pasture in eastern Nigeria. Research in Veterinary Science, 37, 148–153
Chiejina, S.N. and Fakae, B.B., 1989. The ecology of infective larvae of bovine gastrointestinal trichostrongylids in dry season contaminated pastures in the Nigerian derived savanna. Journal of Helminthology, 63 (in press)
Chiejina, S.N., Fakae, B.B. and Eze, B.O., 1988. Arrested development of gastrointestinal trichostrongylids in goats in Nigeria. Veterinary Parasitology, 28, 103–113
Dinnik, J.A. and Dinnik, N.N., 1961. Observations on the longevity of Haemonchus contortus larvae on pasture herbage in the Kenya Highlands. Bullentin of Epizootic Diseases of Africa, 9, 193–208
Fakae, B.B., 1986. Aspects of the epidemiology of bovine parasitic gastroenteritis in the derived savanna area of eastern Nigeria, (MSc thesis, University of Nigeria, Nsukka, Nigeria)
Fakae, B.B. and Chiejina, S.N., 1988a. Relative contributions of late dry season and early rains pasture contaminations with trichostrongyle eggs to the wet season herbage infestation in eastern Nigeria. Veterinary Parasitology, 28, 115–123
Fakae, B.B. and Chiejina, S.N., 1988b. Further studies on development and availability of infective larvae of bovine gastrointestinal trichostrongylids on pasture in eastern Nigeria. Veterinary Parasitology, 28, 143–152
Hart, J.A., 1964. Observations on the dry season strongyle infestations of Zebu cattle in northern Nigeria. British Veterinary Journal, 120, 87–95
Lancaster, M.B., 1970. The recovery of infective nematode larvae from herbage samples. Journal of Helminthology, 44, 219–230
Lee, R.P., Armour, J. and Ross, J.G., 1960. The seasonal variation of strongyle infestations in Nigerian Zebu cattle. British Veterinary Journal, 116, 34–46
MAFF, 1977. Manual of Veterinary Parasitological Laboratory Techniques, (Ministry of Agriculture, Fisheries and Food Technical Bulletin No. 18., HMSO, London)
Mfitilodze, M.W. and Hutchinson, G.W., 1988. Development of free-living stages of equine strongyles in faeces on pasture in a tropical environment. Veterinary Parasitology, 26, 285–296
Mohammed-Saleem, M.A., 1986. The ecology, vegetation and land use of subhumid Nigeria. In: Livestock systems research in Nigeria's subhumid zone. Proceedings of the 2nd ILCA/NAPRI Symposium, (Kaduna, Nigeria, 29 October–2 November 1984), 59–84
Ogunsusi, R.A., 1979. Pasture infectivity with trichostrongylid larvae in the northern Guinea savanna of Nigeria. Research in Veterinary Science, 26, 320–323
Ogunsusi, R.A. and Eysker, M., 1979. Inhibited development of trichostrongylids of sheep in northern Nigeria. Research in Veterinary Science 26, 108–110
Okon, E.D. and Enyenihi, U.K., 1977. Development and survival of Haemonchus contortus larvae on pastures in Ibadan. Tropical Animal Health and Production, 9, 7–10
Silverman, P.H. and Campbell, J.A., 1959. Studies on parasitic worms of sheep in Scotland. I. Embryonic and larval development of Haemonchus contortus at constant conditions. Parasitology, 49, 23–38
Sprent, J.F.A., 1946. Some observations on the bionomics of Bunostomum phlebotomum, a hookworm of cattle. Parasitology, 37, 202–210
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Chiejina, S.N., Fakae, B.B. & Eze, P.I. Development and survival of free-living stages of gastrointestinal nematodes of sheep and goats on pasture in the Nigerian derived savanna. Veterinary Research Communications 13, 103–112 (1989). https://doi.org/10.1007/BF00346720
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DOI: https://doi.org/10.1007/BF00346720