Ruminant productivity in the tropical Africa has remained low despite decades of research on animal nutrition and introduction of new breeds of animals mainly because of low-quality feeds available, especially during the dry season that is inefficiently utilised. This results in prolonged time fo...
Korir, D.
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Goopy, John P.
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Gachuiri, C.
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Butterbach-Bahl, Klaus
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Eckard, R.
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Anderson, C.
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[Supplementation with Calliandra calothyrsus improves nitrogen retention in cattle fed low-protein diets]
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Supplementation with Calliandra calothyrsus improves nitrogen retention in cattle fed low-protein diets
Onyango, Alice A.
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Goopy, John P.
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[Application of nutrient concentration of cattle faeces to develop algorithms estimating apparent in vivo digestibility and metabolisable energy of tropical ruminant forages]
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Application of nutrient concentration of cattle faeces to develop algorithms estimating apparent in vivo digestibility and metabolisable energy of tropical ruminant forages
Wassie, Shimels E.
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Ali, A.I.M.
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Korir, Daniel
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Butterbach-Bahl, Klaus
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Goopy, John P.
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Merbold, Lutz
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Schlecht, E.
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Dickhoefer, Uta
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[Effects of feed intake level on efficiency of microbial protein synthesis and nitrogen balance in Boran steers consuming tropical poor-quality forage]
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Effects of feed intake level on efficiency of microbial protein synthesis and nitrogen balance in Boran steers consuming tropical poor-quality forage
Onyango, A.A.
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Dickhoefer, Uta
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Rufino, M.C.
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Butterbach-Bahl, Klaus
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Goopy, John P.
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[Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in western Kenya]
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Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in western Kenya
Sánchez, Pedro A.
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Korir, Daniel
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Ali, A.I.M.
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Goopy, John P.
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Merbold, Lutz
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Schlecht, E.
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Dickhoefer, U.
,
[Feed intake, apparent total tract digestibility, and nitrogen balance in Boran steers fed with three grasses grown alone or intercropped with Lablab purpureus]
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Feed intake, apparent total tract digestibility, and nitrogen balance in Boran steers fed with three grasses grown alone or intercropped with Lablab purpureus
Serum and liver retinol concentrations and blood β-carotene concentrations were studied in 30 Bos indicus heifers rendered deficient of vitamin A over 180 days and then given treatments of access to algae-based lick blocks (n = 10), injectable retinyl palmitate and molasses-based lick blocks (n =...
Parker, A.J.
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Goopy, John P.
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Callaghan, M.J.
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Vermunt, J.J.
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Nys, R. de
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[Vitamin A deficiency in Bos indicus heifers fed a wheat straw diet cannot be corrected with algae lick blocks or intramuscular injectable retinyl palmitate treatments]
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Vitamin A deficiency in Bos indicus heifers fed a wheat straw diet cannot be corrected with algae lick blocks or intramuscular injectable retinyl palmitate treatments
Availability of suitable feed, and in particular sources of protein-rich food, is a major constraint to increasing the productivity of smallholders in sub-Saharan Africa it is difficult to justify diverting land from growing crops for human consumption. The roots of the sweet potato are a high en...
Goopy, John P.
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Gakige, J.
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Korir, D.
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Kvacic, M.
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Butterbach-Bahl, Klaus
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[Vines of the sweet potato (Ipomea batatas): A valuable feed supplement for ruminants in small holder systems]
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Vines of the sweet potato (Ipomea batatas): A valuable feed supplement for ruminants in small holder systems
In vivo determination of digestible organic matter (dOM) and metabolisable energy (ME) concentrations of feeds is laborious and expensive, whereas analysis of their nutrient contents is routinely performed. Prediction equations based on the chemical composition of feeds can be a compromise. This ...
Onyango, A.
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Dickhoefer, Uta
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Butterbach-Bahl, Klaus
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Goopy, John P.
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[Digestibility and metabolizable energy of selected tropical feedstuffs estimated by in vitro and prediction equations]
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Digestibility and metabolizable energy of selected tropical feedstuffs estimated by in vitro and prediction equations
Improving productivity in Kenyan smallholder dairy systems is perceived as having the potential to greatly improve the supply of milk to processors and make substantial improvements in rural incomes by doing so. Surveys recently commissioned by GIZ in Western Kenya indicated that milk yield was b...
Goopy, John P.
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Gakige, J.K.
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[Improving productivity in Kenyan smallholder dairy systems through selective, intensive education and supported adoption]
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Improving productivity in Kenyan smallholder dairy systems through selective, intensive education and supported adoption