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Greenhouse gas (GHG) emission measurements from livestock excreta in Africa are limited. We measured CH4 and N2O emissions from excreta of six Boran (Bos indicus) and six Friesian (Bos taurus) steers near Nairobi, Kenya. The steers were fed one of three diets (T1 [chaffed wheat straw], T2 [T1 + C...


Pelster, David E.Gisore, B.Goopy, John P.Korir, D.Koske, J.K.Rufino, Mariana C.Butterbach-Bahl, Klaus[Methane and nitrous oxide emissions from cattle excreta on an East African grassland]Methane and nitrous oxide emissions from cattle excreta on an East African grassland

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
Onyango, A.A.Dickhoefer, UtaRufino, M.C.Butterbach-Bahl, KlausGoopy, John P.[Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in western Kenya]Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in western Kenya

Pelster, David E.Butterbach-Bahl, KlausRufino, Mariana C.Goopy, John P.Rosenstock, Todd S.[Improving estimates of GHG emission factors from livestock production systems on smallholder farms]Improving estimates of GHG emission factors from livestock production systems on smallholder farms

Enteric methane emissions from livestock constitute a greater part of anthropogenic greenhouse gases (GHGs) in Africa, than in more industrialised economies, providing a strong incentive for the development of low methane phenotype ruminants. Although dietary and husbandry options already exist f...


Goopy, John P.[Creating a low enteric methane emission ruminant: What is the evidence of success to the present and prospects for developing economies?]Creating a low enteric methane emission ruminant: What is the evidence of success to the present and prospects for developing economies?

Sánchez, Pedro A.Korir, DanielAli, A.I.M.Goopy, John P.Merbold, LutzSchlecht, 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

Pelster, David E.Goopy, John P.Merbold, LutzButterbach-Bahl, Klaus[Importance of developing regional greenhouse gas emission factors]Importance of developing regional greenhouse gas emission factors

Merbold, LutzButterbach-Bahl, KlausEricksen, Polly J.Goopy, John P.Korir, DanielLeitner, SonjaMutuo, PaulNdung’u, Phyllis W.Onyango, Alice A.Owino, JessePelster, 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

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.Gakige, J.Korir, D.Kvacic, M.Butterbach-Bahl, Klaus[Vines of the sweet potato (Ipomea batatas): A valuable feed supplement for ruminants in small holder systems]Vines of the sweet potato (Ipomea batatas): A valuable feed supplement for ruminants in small holder systems

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