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.
,
Goopy, John P.
,
Gachuiri, C.
,
Butterbach-Bahl, Klaus
,
Eckard, R.
,
Anderson, C.
,
[Supplementation with Calliandra calothyrsus improves nitrogen retention in cattle fed low-protein diets]
,
Supplementation with Calliandra calothyrsus improves nitrogen retention in cattle fed low-protein diets
Onyango, Alice A.
,
Goopy, John P.
,
[Application of nutrient concentration of cattle faeces to develop algorithms estimating apparent in vivo digestibility and metabolisable energy of tropical ruminant forages]
,
Application of nutrient concentration of cattle faeces to develop algorithms estimating apparent in vivo digestibility and metabolisable energy of tropical ruminant forages
Sánchez, Pedro A.
,
Korir, Daniel
,
Ali, A.I.M.
,
Goopy, John P.
,
Merbold, Lutz
,
Schlecht, E.
,
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]
,
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.
,
Goopy, John P.
,
Callaghan, M.J.
,
Vermunt, J.J.
,
Nys, R. de
,
[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]
,
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
Merbold, Lutz
,
Butterbach-Bahl, Klaus
,
Ericksen, Polly J.
,
Goopy, John P.
,
Korir, Daniel
,
Leitner, Sonja
,
Mutuo, Paul
,
Ndung’u, Phyllis W.
,
Onyango, Alice A.
,
Owino, Jesse
,
Pelster, David E.
,
Wanyama, George N.
,
[Improved greenhouse gas emission factors for smallholder livestock systems in East Africa]
,
Improved greenhouse gas emission factors for smallholder livestock systems in East Africa
Ndung’u, Phyllis
,
Butterbach-Bahl, Klaus
,
Merbold, Lutz
,
Goopy, John P.
,
Bebe, B.O.
,
Ondiek, J.O
,
[Improved region-specific emission factors for enteric methane emissions from cattle in smallholder mixed crop: livestock systems of Nandi County, Kenya]
,
Improved region-specific emission factors for enteric methane emissions from cattle in smallholder mixed crop: livestock systems of Nandi County, Kenya
Measurement of liveweight of stock is one of the most important production tools available to farmers – playing a role in nutrition, fertility management, health and marketing. Yet most farmers in sub-Saharan Africa do not have access to scales on which to weigh cattle. Heart girth measurements (...
Goopy, John P.
,
Pelster, David E.
,
Onyango, A.
,
Marshall, Karen
,
Lukuyu, Margaret N.
,
[Simple and robust algorithms to estimate liveweight in African smallholder cattle]
,
Simple and robust algorithms to estimate liveweight in African smallholder cattle
Goopy, John P.
,
Onyango, A.A.
,
Dickhoefer, Uta
,
Butterbach-Bahl, Klaus
,
[A new approach for improving emission factors for enteric methane emissions of cattle in smallholder systems of East Africa – Results for Nyando, Western Kenya]
,
A new approach for improving emission factors for enteric methane emissions of cattle in smallholder systems of East Africa – Results for Nyando, Western Kenya