The reproductive performance of indigenous cattle in Zambia are examined. Information on general causes of infertility, age of puberty for males and females, oestrus cycle, pregnancy and calving rate of cows, and sperm production of bulls as well as chemical composition of semen are provided.
Rakha, A.M.
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Igboeli, G.
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[Factors affecting the calving rate in local breeds of cattle in Zambia]
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Factors affecting the calving rate in local breeds of cattle in Zambia
From a group of mature males goats of Boer and native Zambian goats, eight goats from each breed were selected and semen obtained by means of an electro-ejaculator. Two ejaculates were obtained each week at 24-hour intervals, for a total of six weeks. Ejaculate colours were strikingly variable be...
Igboeli, G.
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[A comparative study of the semen and seminal characteristics of two breeds of goats (Zambia)]
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A comparative study of the semen and seminal characteristics of two breeds of goats (Zambia)
The oestrus cycle and its manifestation in the Angoni, Barotse and Boran cattle are investigated. The time of onset and manifestation of oestrus and ovulation are observed, and changes in the size, colour, appearance and contents of the cervical organs reported.
Rakha, A.M.
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Igboeli, G.
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Hale, D.H.
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[The oestrus cycle of Zebu and Sanga breeds of cattle in Central Africa]
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The oestrus cycle of Zebu and Sanga breeds of cattle in Central Africa