Descubre y comparte nuestro conocimiento público

Se han encontrado 5 recursos

Resultados de búsqueda

Autor: Trail, J.C.M.

The limited genetic potential of indigenous cattle has often been quoted as a major constraint to beef and milk production in Africa south of the Sahara. Thus, considerable efforts have been and are being made to increase output through breeding programmes in many countries of the continent. Thes...


Trail, J.C.M.[Merits and demerits of importing exotic cattle compared with the improvement of local breeds: Cattle in Africa South of the Sahara]Merits and demerits of importing exotic cattle compared with the improvement of local breeds: Cattle in Africa South of the Sahara
Autor: Trail, J.C.M.

Discusses the characteristics of trypanotolerant West African Shorthorn and N'dama cattle, examining their productivity, mechanisms of trypanotolerance and environmental factors affecting trypanotolerance, esp. level of tsetse challenge and previous exposure.


Trail, J.C.M.[Trypanotolerant N'Dama and West African Shorthorn cattle]Trypanotolerant N'Dama and West African Shorthorn cattle
Autor: Trail, J.C.M.

Compares the productivity of Africander, Tswana and Tuli cattle using indices calculated from data on reproductive performance, viability and growth; also evaluates the crossbreeding potentials of the Tswana breed.


Trail, J.C.M.[Africander, Tswana and Tuli cattle of Southern Africa: Breed characterization separates fact from fiction]Africander, Tswana and Tuli cattle of Southern Africa: Breed characterization separates fact from fiction
Autor: Trail, J.C.M.

Describes the main ecological zones of tropical Africa, mentioning the importance of cattle in each, production systems involved, and examples of the general types of cattle that can be maintained.


Trail, J.C.M.[Cattle breeding in tropical Africa]Cattle breeding in tropical Africa
Autor: Trail, J.C.M.

Presents findings of trials carried out in Uganda to characterize the indigenous Ankole, Boran and zebu cattle breeds as straightbreds for maternal traits and in crosses with exotic Angus and Red Poll males; includes data on calf crop, preweaning viability and calf weight at birth, weaning and at...


Trail, J.C.M.[Crossbreeding indigenous East African cattle with American Angus and Red Poll]Crossbreeding indigenous East African cattle with American Angus and Red Poll

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso