Tick infestations on Zebu cattle in western Kenya: quantitative assessment of host resistance

Autor:	S. Nokoe, D. K. Punyua, Abdalla A. Latif, P. B. Capstick
Rok vydání:	1991
Předmět:	Male Nymph Veterinary medicine Cattle Diseases Biology Tick Ticks parasitic diseases Animals Acari Larva General Veterinary Parasitiformes Feeding Behavior biology.organism_classification Zebu Kenya Tick Infestations Infectious Diseases Insect Science Herd Parasitology Cattle Female
Zdroj:	Scopus-Elsevier
ISSN:	0022-2585
Popis:	Groups of previously tick-exposed East African Zebu cattle together with tick-susceptible Friesian steers as controls were artificially infested with adults, nymphs, and larvae of Rhipicephalus appendiculatus Neumann on two occasions. Comparison of the feeding performance data from the two different breeds of cattle showed significant differences in the number and weight of engorged females and the weight of engorged nymphs. Data from the first challenge were used to derive a function for discriminating between resistant and susceptible categories. The use of the function gave repeatable results on resistance rankings when compared with original ranking of cattle based on natural tick counts following natural exposure. The function was converted into an index that could then be used to monitor the seasonal and annual fluctuations in tick resistance rankings of individual animals in a herd.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a53dffef3bc1d1d647410409dfc97b0c https://pubmed.ncbi.nlm.nih.gov/2033603 Zobrazit plný text záznamu