Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Entomology (46)
- Agricultural Science (34)
- Plant Sciences (34)
- Animal Diseases (24)
- Diseases (24)
-
- Medicine and Health Sciences (24)
- Physical Sciences and Mathematics (5)
- Environmental Sciences (4)
- Poultry or Avian Science (4)
- Dairy Science (2)
- Agricultural Education (1)
- Agriculture (1)
- Biodiversity (1)
- Earth Sciences (1)
- Food Microbiology (1)
- Food Science (1)
- Immunology and Infectious Disease (1)
- Meat Science (1)
- Sheep and Goat Science (1)
- Soil Science (1)
- Keyword
-
- Cowpea (15)
- Vigna unguiculata (10)
- Cattle (9)
- Kenya (9)
- Livestock (7)
-
- Rhipicephalus appendiculatus (7)
- Biological control (5)
- Trypanosomosis (5)
- Metarhizium anisopliae (4)
- Control (3)
- Cowpea aphid (3)
- Entomopathogenic fungi (3)
- Megalurothrips sjostedti (3)
- Prevalence (3)
- Theileria (3)
- Theileria parva (3)
- Amblyomma variegatum (2)
- Anaplasma (2)
- Aphis craccivora (2)
- Biopesticide (2)
- Crop evolution (2)
- Crop-livestock systems (2)
- Ehrlichia (2)
- Formulation (2)
- Genetic diversity (2)
- Glossina (2)
- Glossina morsitans morsitans (2)
- Intercropping (2)
- Maize (2)
- Mycoplasma mycoides subsp. mycoides (2)
- Publication Year
- File Type
Articles 91 - 96 of 96
Full-Text Articles in Beef Science
Towards The Selection Of Cattle For Tick Resistance In Africa, J. J. De Castro, P. B. Capstick, S. Nokoe, H. Kiara, F. Rinkanya, R. Slade, O. Okello, L. Bennun
Towards The Selection Of Cattle For Tick Resistance In Africa, J. J. De Castro, P. B. Capstick, S. Nokoe, H. Kiara, F. Rinkanya, R. Slade, O. Okello, L. Bennun
All Peer-Reviewed Publications
Half-body tick collections and visual assessment of tick burdens were performed monthly over six months on 100 bulls at the Kenya National Boran Stud, Mutara Ranch, Kenya. Boophilus decoloratus predominated among several tick species infesting the animals. Burdens of B. decoloratus and total tick burdens were highly correlated. Rankings of relative tick resistance among bulls were consistent from month to month. Rankings based on visual assessment were very close to those based on actual tick burdens. Animals with thin skins appeared to carry fewer ticks, but tick burden bore no relationship to coat colour. The results suggest that simple visual …
Infection Rates In Glossina Morsitans Morsitans Fed On Waterbuck And Boran Cattle Infected With Trypanosoma Congolense, Steve Mihok, Reardon O. Olubayo, David F. Wesonga
Infection Rates In Glossina Morsitans Morsitans Fed On Waterbuck And Boran Cattle Infected With Trypanosoma Congolense, Steve Mihok, Reardon O. Olubayo, David F. Wesonga
All Peer-Reviewed Publications
Teneral Glossina morsitans morsitans were fed on waterbuck (Kobus defassa) and Boran cattle (Bos indicus) infected experimentally with Trypanosoma congolense clone IL2895. Infection rates in tsetse varied from 9 to 31% when fed on cattle, and from 2 to 59% when fed on waterbuck. In waterbuck, infections were often detected through the development of parasites in tsetse at times when parasitaemia could not be detected through microscopic examination of blood. Male and female, and 1- and 2-day-old flies were equally susceptible to infection on both hosts. Infection in tsetse was associated with a 14% absolute reduction in survival during the …
Pathogenicity Of Tsetse-Transmitted Trypanosoma Congolense For Waterbuck (Kobus Defassa) And Boran Cattle (Bos Indicus), R. O. Olubayo, S. Mihok, D. F. Wesonga, E. R.M. Mbwabi
Pathogenicity Of Tsetse-Transmitted Trypanosoma Congolense For Waterbuck (Kobus Defassa) And Boran Cattle (Bos Indicus), R. O. Olubayo, S. Mihok, D. F. Wesonga, E. R.M. Mbwabi
All Peer-Reviewed Publications
Five waterbuck (Kobus defassa) and four Boran cattle (Bos indicus) were infected with Trypanosoma congolense IL2895 using Glossina morsitans morsitans. At the same time, two waterbuck and two cattle were inoculated intravenously with bloodstream forms. With both methods of challenge, cattle had short prepatent periods followed by a continuous high parasitaemia. All cattle became severely anaemic and had to be treated with trypanocidal drugs to prevent death. In contrast, tsetse and intravenous challenge of waterbuck resulted in a long prepatent period, followed by brief, intermittent levels of low parasitaemia, and eventual selfcure. Waterbuck did not become anaemic, even during short …
Predation On Livestock Ticks By Chickens, S. M. Hassan, O. O. Dipeolu, A. O. Amoo, T. R. Odhiambo
Predation On Livestock Ticks By Chickens, S. M. Hassan, O. O. Dipeolu, A. O. Amoo, T. R. Odhiambo
All Peer-Reviewed Publications
Chickens were shown to be natural predators of ticks. Rhipicephalus appendiculatus were recovered in large numbers from the crops and gizzards of chickens which had scavenged for 30 min-1 h among tick-infested cattle. Other ticks recovered were Amblyomma variegatum and Boophilus decoloratus. The numbers of ticks recovered ranged from 3 to 331, with an average of 81 per chicken. Cattle facilitated the predation of ticks by certain behavioural actions. Chickens also picked up both engorged and unengorged ticks seeded on vegetation, but unengorged ticks were preferred. The possibility of tick predation by chickens forming a viable biological control component in …
Histopathology Of Attachment Sites Of Amblyomma Variegatum And Rhipicephalus Appendiculatus On Zebu Cattle Of Varying Resistance To Ticks, A. A. Latif, D. K. Punyua, P. B. Capstick, S. Nokoe, A. R. Walker, J. D. Fletcher
Histopathology Of Attachment Sites Of Amblyomma Variegatum And Rhipicephalus Appendiculatus On Zebu Cattle Of Varying Resistance To Ticks, A. A. Latif, D. K. Punyua, P. B. Capstick, S. Nokoe, A. R. Walker, J. D. Fletcher
All Peer-Reviewed Publications
Mature, unimproved East African Zebu cattle (Bos indicus) naturally exposed to ticks from birth were ranked for resistance to ticks by repeated whole-body counts of infesting ticks. Four cattle of high resistance, four of low resistance and two of intermediate resistance were artificially infested with nymphs of Amblyomma variegatum and Rhipicephalus appendiculatus. Two Friesian cattle (Bos taurus) with less exposure to ticks were similarly infested. Biopsies of tick attachment sites were examined histologically. All attachment sites showed acute inflammatory lesions, and sites of both tick species on high resistance cattle showed delayed hypersensitive reactions with intra-epidermal pustulation and significant increases …
Cutaneous Responses Of Cattle To Extracts From Rhipicephalus Appendiculatus Larvae, M. G. Binta, M. P. Cunningham
Cutaneous Responses Of Cattle To Extracts From Rhipicephalus Appendiculatus Larvae, M. G. Binta, M. P. Cunningham
All Peer-Reviewed Publications
A component of an extract from Rhipicephalus appendiculatus larval ticks induced an immediate hypersensitivity reaction in sensitized cattle when intra-dermally inoculated. Generally, the magnitude of the cutaneous reaction depended upon the duration of exposure of the cattle to tick infestation. The skin reaction was absent in steers not previously fed on by ticks. Field trials, using the extract in the Narok District of Kenya (Masailand), showed that the skin swelling thus induced was biggest in adult cattle and those over 9 months, moderate in the 6-month age-group and barely palpable in the less-than-1-month age-group. © 1984.