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OJVRTM

Online Journal of Veterinary Research©

(Including Medical and Laboratory Research)

Established 1994

ISSN 1328-925X

 

Volume 29 (4): 225-235, 2025.

Trypanosoma tolerant cattle with low zebu attributes

Achukwi MD, Ibeagha-Awemu EM, Musongong GA, Erhardt G.

 

Institute of Agricultural Research for Development (IRAD), Wakwa Regional Centre, Veterinary Research Laboratory.  Ngaoundere Cameroon. Institute of Animal Breeding and Genetics, Justus-Liebig-University, Giessen, Germany 3Department of Animal Science, McGill University, Ste Anne De Bellevue, Canada

 

ABSTRACT

 

Achukwi MD, Ibeagha-Awemu EM, Musongong GA, Erhardt G, Trypanosoma tolerant cattle with low zebu attributes, Onl J Vet Res, 29 (4): 225-235, 2023. Fifteen Bos Taurus and 22 Bos indicus weaners were exposed 1 year to trypanosome infections by fly vector. Seven microsatellite zebu markers with known alleles detected and eliminated introgressed Doayo Bos Taurus and White Fulani Bos Indicus X Doayo crosses. Packed cell volume (PCV) and trypanosomiasis were determined weekly. All animals became infected with trypanosomes during the study period. Mean zebu alleles ranged 42.9% to 85.7% in Bos Indicus and 7.1%-42.9% in Bos Taurus. However after eliminating low or high zebu alleles  in B Indicus ranged 35.8-85.7% and B Taurus 7.1 to 28.6%. Zebu cattle required 2X treatments compared with B taurus  ~46%  and only 16.8% B indicus  

 

Key words: Doayo, zebu specific alleles, introgression, trypanosomosis, haematocrit,  trypanotolerance

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