Search Results - "aging"

Aspects of bull reproduction with emphasis on cattle in Ethiopia. II. Sperm production capacity and semen characteristics by Tegegne, Azage, Kassa, T., Mukasa-Mugerwa, E.

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Factors affecting trypanosome prevalence in Zebu cattle exposed to high trypanosomiasis risk in south-west Ethiopia by Mulatu, W., D'Ieteren, G.D.M., Duffera, W., Tegene, G., Leak, S.G.A., Maehl, J.H.H., Nagda, S.M., Rarieya, J.M., Rowlands, G.J., Thorpe, W.R., Tikubet, G., Trail, J.C.M.

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Genetic and environmental influences on beef cattle production in Zambia. 1. Factors affecting weaner production from Angoni, Barotse and Boran dams by Thorpe, W.R., Cruickshank, D.K.R., Thompson, R.

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Reproductive characteristics of Ethiopian highland sheep. I. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs by Toe, F., Rege, J.E.O., Mukasa-Mugerwa, E., Tembely, S., Anindo, D.O., Baker, R.L., Lahlou-Kassi, A.

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Breed and environmental effects on lamb production in Nigeria by Buvanendran, V., Adu, I.F., Oyejola, B.A.

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Preliminary observations on the milk production of Borana cattle in the southern rangeland by Dessalegne, B.

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Functional response and life history parameters of Apanteles taragamae, a larval parasitoid of Maruca vitrata by Dannou, E.A., Tamo, Manuele, Huis, A. van, Dicke, M.

Subjects: “…host age…”
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Resultats preliminaires d'une etude sur l'evolution de l'elevage dans le Gourma: parametres de reproduction, mortalites et pertes dues a la secheresse by International Livestock Centre for Africa

Subjects: “…age au premier velage…”
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Goat and sheep population changes on a Masai group ranch in south-western Kenya, 1978-1986 by Wilson, R.T., Maki, M. Ole

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Reproductive characteristics of Ethiopian highland sheeI. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs by Toe, F., Rege, J.E.O., Mukasa-Mugerwa, E., Tembely, S., Anindo, D.O., Baker, R.L., Lahlou-Kassi, A.

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Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system by Tegegne, Azage, Entwistle, K.W., Mukasa-Mugerwa, E.

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A rapid appraisal of goat and sheep flock demography in East and West Africa: Method, results and application to livestock research and development by Peacock, C.P.

Subjects: “…age at first calving…”
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Performances ponderales du mouton africain de l'Est a longue-queue-grasse en station au Rwanda by Sibomana, G., Murayi, T., Sayers, A.R., Wilson, R.T.

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Outbreaks of peste des petits ruminants in village goat flocks in Nigeria by Opasina, B.A.

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Systems research experiences in Africa by Kategile, J.A., Smith, O.

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The growth and development of the beef qualities of Angoni cattle (East African zebu). Part I. Live weight by Walker, C.A.

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Ethiopian Adal sheep: Genetic and environmental factors affecting body weights and post-weaning gain by Galal, E.S.E., Awgichew, K.

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Factors affecting production records of lambs from a flock of East African Blackhead sheep by Trail, J.C.M., Sacker, G.D.

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Effect of a zinc amino acid complex on egg production, egg shell quality and external appearance in two laying hen genotypes housed in two different production systems by Boyner, Malin

Subjects: “…aged layers…”

Livestock production on Masai group ranches. 1. A preliminary survey of the goat and sheep populations at Elangata Wuas by Wilson, R.T.

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