Examines the genetic basis of trypanotolerance with particular reference to Africa, environmental factors which can influence its stability like age, stress (work, pregnancy etc.), nutrition and disease, and the possible mechanisms responsible; looks at the tyrpanotolerance of different breeds.
Describes the system of performance testing operating in Botswana & its value for the genetic improvement of beef cattle, examining dif. aspects of data collection, handling, analysis & use within a computerized system, & recording traits such as reproductive performance, growth, viability & moth...
Discusses use of mathematical modelling as a research tool to evaluate alternative practices, illustrating its application in beef cattle production systems in Botswana, with a description of data inputs, model utilized & simulations carried out. Compares actual & simulated values and examines ef...
Cartwright, T.C.
,
Anderson, F.M.
,
Buck, N.G.
,
Nelsen, T.C.
,
Trail, J.C.M.
,
Pratchett, D.
,
Sanders, J.
,
Astle, W.
,
Light, D.E.
,
Rennie, T.W.
,
Rose, T.J.
,
Shorrock, C.
,
[Systems modelling in cattle production - an application in Botswana]
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Systems modelling in cattle production - an application in Botswana
Summarises the impact of trypanosomiasis on development of trypanotolerant livestock. Describes current genetic research being carried out by collaborating national and international organisations in the African Trypanotolerant Livestock Network, and discusses the importance of conserving these g...
Trail, J.C.M.
,
D'Ieteren, G.D.M.
,
Teale, A.J.
,
[Trypanotolerance and the value of conserving livestock genetic resources]
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Trypanotolerance and the value of conserving livestock genetic resources
Relationships were evaluated between trypanosome infection as measured by antigen detection enzyme immunoassays (antigen ELISA), anaemia as determined by average packed red cell volume (PCV), and animal performance as assessed by daily weight gain in 99 N'Dama cattle in Gabon exposed to natural t...
Trail, J.C.M.
,
D'Ieteren, G.D.M.
,
Viviani, P.
,
Yangari, G.
,
Nantulya, V.M.
,
[Relationships between trypanosome infection measured by antigen detection enzyme immunoassays, anaemia and growth in trypanotolerant N'Dama cattle]
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Relationships between trypanosome infection measured by antigen detection enzyme immunoassays, anaemia and growth in trypanotolerant N'Dama cattle
Evaluates possible contributions of the antigen-detection enzyme immunoassays (ELISA) for the diagnosis of Trypanosoma vivase, T.congolense, and T.Bucei infections in N'Dama cattle in Gabon, Central Africa. The assays are based on monoclonal antibodies which recoginse trypanosome antigens specifi...
Trail, J.C.M.
,
D'Ieteren, G.D.M.
,
Maille, J.C.
,
Yangari, G.
,
Nantulya, V.M.
,
[Use of antigen-detection immunoassays in assessment of trypanotolerance in N'Dama cattle]
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Use of antigen-detection immunoassays in assessment of trypanotolerance in N'Dama cattle
Presents results of analyses carried out on a range of performance traits and productivity estimates for indigenous Arsi & Zebu cattle and their crosses with Jersey & Friesian, maintained for milk production at Asela station & on smallholder farms in the Arsi region of Ethiopia; includes data on ...
Summarizes the Report of a study jointly undertaken by ILCA, FAO & UNEP to study the status of the trypanotolerant livestock of West and Central Africa, w. an appraisal of existing information on their productivity, and comparisons between trypanotolerant and non-trypanotolerant livestock maintai...
Trail, J.C.M.
,
[A note on the productivity of trypanotolerant livestock in West and Central Africa]
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A note on the productivity of trypanotolerant livestock in West and Central Africa
Comparison of broad data base & scarce data base situations, where modelling can play a positive role in research towards livestock production systems in Africa, w. specific examples from Botswana and Mali.
Anderson, F.M.
,
Trail, J.C.M.
,
[Initial application of modelling techniques in livestock production systems under semi-arid conditions in Africa]
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Initial application of modelling techniques in livestock production systems under semi-arid conditions in Africa
Evaluates the usefulness of different range parameters for establishing limiting factors to growth of beef cattle, particularly crude protein content and dry matter digestibility of herbage.
Pratchett, D.
,
Capper, B.
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Light, D.
,
Miller, M.
,
Rutherford, A.S.
,
Rennie, T.
,
Buck, N.
,
Trail, J.C.M.
,
[Factors limiting liveweight gain of beef cattle on rangeland in Botswana]
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Factors limiting liveweight gain of beef cattle on rangeland in Botswana