Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 140.
  1. Library Resource
    Articles et Livres
    décembre, 1985
    Afrique, Afrique orientale

    Examines the productivity of East African pastoral systems in terms of animal protein & energy production, milk offtake and livestock production parameters such as calving percentage, calf mortality and herd structure; compares the productivity of East African pastoral systems to those of commercial ranches and to pastoral systems in other parts of the world.

  2. Library Resource
    Articles et Livres
    décembre, 1985
    République-Unie de Tanzanie, Afrique, Afrique australe

    Evaluates the productivity of grade Boran cattle maintained by chemoprophylaxis under severe trypanosomiasis risk at Mkwaja ranch, Tanzania; uses data based on more than 20,000 calving records over the 10-year period from 1973 to 1982; discusses environmental influences on performance traits and links between tsetse population dynamics & cattle; includes comparison of Boran genotypes and its effect on pre-weaning growth characters.

  3. Library Resource
    Documents et rapports de conférence
    décembre, 1985

    Describes generally the parameters of pastoralist milk production w. partic. ref. to cattle. Discusses briefly methods of determining milk yield and milk offtake and the effect of milk production on reproductive rate. Gives a brief description of lactation curve, lactation length, calf growth and camel & small stock milk.

  4. Library Resource
    Articles et Livres
    décembre, 1985

    Se presenta un manual detallado que describe los metodos estandarizados de procedimiento para el analisis de suelo y tejidos vegetales con el objeto de 1) proveer a los investigadores de America tropical informacion sobre metodologia existente para los analisis de suelos acidos y plantas del tropico, 2) incrementar entre las instituciones nacionales e internacionales un intercambio de informacion sobre las metodologias empleadas en America tropical para definir y aplicar las mejores y 3) hacer que los analisis de suelos y de plantas constituyan una parte dinamica de la investigacion y permi

  5. Library Resource
    Rapports et recherches
    décembre, 1985

    Examines post-drought rehabilitation policies to aid recovery in livestock production and crop production, and the effects of drought on livestock and farming communities. Discusses the role played by reserves in mitigating a population's vulnerability to drought; and the macro-economic implications of a drought induced loss of livestock for the government budget, domestic markets and external trade. Investigates the likely speed of recovery in the abscence of outside intervention. Presents materials from case studies to show the nature of costs and returns involved.

  6. Library Resource

    La tierra en América tropical

    Articles et Livres
    décembre, 1985

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