In order to characterise the dairy production systems as well as the productive and reproductive performance of dairy cows in the study area, a total of 256 and 54 dairy farms were used for survey and monitoring data collection, respectively. Based on breed, land size, feed and market accessibili...
Alemayehu, Y.A.
,
Wurzinger, Maria
,
Tegegne, Azage
,
Zollitsch, W.
,
[Performance and limitation of two dairy production systems in the North western Ethiopian highlands]
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Performance and limitation of two dairy production systems in the North western Ethiopian highlands
Approximately 320 East African Zebu cows over 36 months of age were monitored monthly from 1986 to 1992 in nine village herds in an area of high trypanosomiasis risk in southwest Ethiopia where there was resistance to all available trypanocidal drugs. Cows were individually treated with diminazen...
Rowlands, G.J.
,
Woudyalew Mulatu
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Nagda, S.M.
,
D'Ieteren, G.D.M.
,
[Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes]
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Variations in packed red cell volume and trypanosome prevalence and relationships with reproductive traits in East African Zebu cows exposed to drug-resistant trypanosomes
This volume presents major results obtained since the publication of volume 1 and 2 and updates national data on trypanotolerant cattle. The first part analyses populations and their trends between the two surveys and reviews research activities and development activities. It also gives recent in...
Hoste, Christian H.
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Chalon, E.
,
D'Ieteren, G.D.M.
,
Trail, J.C.M.
,
[Trypanotolerant livestock in West and Central Africa. Volume 3. A decade's results]
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Trypanotolerant livestock in West and Central Africa. Volume 3. A decade's results
Degefa, T.
,
[Problems of livestock development in Ethiopia: Reproductive performance of bulls in Ethiopia]
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Problems of livestock development in Ethiopia: Reproductive performance of bulls in Ethiopia
The savannas of eastern Colombia located in the Orinoco river basin represent 18% of the Latin American neotropical savannas, and those areas that are tillable and closer to markets are subject to considerable anthropic pressure in the quest for intensification. Historically, and even today, beef...
Ramírez Restrepo, Carlos A.
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Vera, Raúl R.
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Rao, Idupulapati M.
,
[Dynamics of animal performance, and estimation of carbon footprint of two breeding herds grazing native neotropical savannas in eastern Colombia]
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Dynamics of animal performance, and estimation of carbon footprint of two breeding herds grazing native neotropical savannas in eastern Colombia
Wirtu, G.
,
[Evaluation of reproductive performance and aspects of oestrus phenomenon in zebu and crossbred cattle at the ILCA Debre Zeit Research Station]
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Evaluation of reproductive performance and aspects of oestrus phenomenon in zebu and crossbred cattle at the ILCA Debre Zeit Research Station
Turner, D.W.
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Gibbs, D.J.
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Ocimati, W.
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Blomme, Guy
,
[The suckering behaviour of plantains (Musa, AAB) can be viewed as part of an evolved reproductive strategy]
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The suckering behaviour of plantains (Musa, AAB) can be viewed as part of an evolved reproductive strategy
This study documented the effect on the productivity of Dorper-Merino cross ewes when they became infected with Cowdria ruminantium as would occur in an endemically stable state. A flock of 152 breeding ewes was randomly divided into two matched groups. One group was infected on multiple occasion...
Martínez, T.A.
,
Meltzer, M.I.
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Perry, Brian D.
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Burridge, M.J.
,
Mahan, S.M.
,
[The effect of subclinical experimental Cowdria ruminantium infection on the health and reproductive performance of breeding ewes]
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The effect of subclinical experimental Cowdria ruminantium infection on the health and reproductive performance of breeding ewes
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 ...
Thorpe, W.R.
,
Morris, C.A.
,
Kang'ethe, P.
,
[Crossbreeding of Ayrshire, Brown Swiss, and Sahiwal cattle for annual and lifetime milk yield in the lowland tropics of Kenya]
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Crossbreeding of Ayrshire, Brown Swiss, and Sahiwal cattle for annual and lifetime milk yield in the lowland tropics of Kenya
Data on reproduction, liveweight and trypanosome infection of N'Dama cattle raised under traditional husbandry systems in The Gambia were analyzed to quantify the relative effects of postpartum liveweight change and infection with pathogenic trypanosomes on 2 parameters of reproductive efficiency...
Agyemang, K.
,
Little, D.A.
,
Mattioli, R.
,
Sonko, E.W.
,
Janneh, L.
,
[Effects of trypanosome infection and liveweight change post-partum on resumption of reproductive activity in N'Dama cows]
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Effects of trypanosome infection and liveweight change post-partum on resumption of reproductive activity in N'Dama cows