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This study examined whether work applied at different stages of lactation had any effect on reproduction of cows under two feeding regimes. Twenty-four F1 crossbred dairy cows (12 Friesian X Boran and 12 Simmental X Boran) were allocated one of two diets (H + 3: natural pasture hay + 3 kg concent...

Three experiments were conducted in successive years on crossbred suckler cows on a farm in a semi-arid area close to Nairobi, Kenya. The cows were mated seasonally to calve approximately 1 month before the rainy season (March to May). The effects of milking once daily and supplementation (2 kg/h...

Peri-urban dairy producers in West Africa face major production constraints including inadequate and poor quality feeds. In view of the high cost of traditional supplementary feeds such as oilseed cakes, the production of forage, especially legumes, is increasingly being advocated. However, it ha...

Presents results of a data collected over a 10-year period on 1,778 service intervals in 1,111 Arsi (Bos indicus) cows at the Ethiopian Ministry of Agriculture ranch to analyse conception rate at first service, interval between services in animals returning for insemination, the number of short c...

Assesses the effect of cow-calf association and continuous suckling on the resumption of oestral activity; and monitors the temporal patterns of plasma progesterone during the post-partum period in grazing Ethiopian Small East African Zebu cows under uncontrolled mating.

Reports the results of studies on growth and live weight changes in a sedentary agro-pastoral system (Mali). Estimates weight & growth by age, sex, season & year, parity and farming system.

Presents a case study from a group ranch in southeastern Kajiado district in Kenyas Maasailand. Outlines the role of dairy production in the system and examines variations by wealth status in milking strategies and the level of milk offtake for human consumption.

Records from 1577 cows borm from 1973 to 1983 on a ranch in lowland Kenya were analyzed for age at first calving, lactation length, lactational milk yield, calving interval, annual milk yield, and, for cows born from 1973 to 1979, number of calvings, productive lifetime in the herd, and lifetime ...

In a 4 X 4 Latin square design trial with 4-week periods, 20 Friesian cows with average milk yield 28.4 kg were given a diet of grass silage ad libitum plus concentrates based on barley, oats and barley fibre (250, 250 and 500 g/kg) at 8.5 kg/day (control) or with rapeseed oilmeal, dried distille...

This study was undertaken to investigate the relationship between date of birth and growth performance of calves born to seasonally-bred range cows. Late born calves exhibited an apparent superiority in preweaning growth over that of their early-born counterparts. This was attributed to a positiv...