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The sustainability of nutrient transfers in integrated rangeland/cropland systems of the Sahel was examined in relation to the impact of livestock. Rangeland nutrient balances are considered in equilibrium whereas croplands lack the internal capacity to replenish nutrient off takes in grain and c...


Powell, J.M.Fernández Rivera, S.Hiernaux, Pierre H.Y.Turner, M.[Nutrient cycling in integrated rangeland/cropland systems of the Sahel]Nutrient cycling in integrated rangeland/cropland systems of the Sahel

Jenet, A.Yimegnuhal, A.Fernández Rivera, S.Tegegne, AzageOsuji, P.O.McCrabb, G.J.Wettstein, H.R.Kreuzer, M.[Genotype differences in the long-term response to different levels of energy supply of dairy cows kept under tropical conditions]Genotype differences in the long-term response to different levels of energy supply of dairy cows kept under tropical conditions

This study compared the effect of supplementing maize stover (MS) with cowpea (Vigna unguiculata) haulms or commercial concentrate (CC) on feed intake, nutrient digestibility, live weight gain and carcass yield of male Ethiopian Highland sheep. Two cowpea genotypes, 12688 (forage) and IT96D-774 (...


Koralagama, K.D.N.Mould, F.L.Fernández Rivera, S.Hanson, Jean[The effect of supplementing maize stover with cowpea (Vigna unguiculata) haulms on the intake and growth performance of Ethiopian sheep]The effect of supplementing maize stover with cowpea (Vigna unguiculata) haulms on the intake and growth performance of Ethiopian sheep

Groundnut haulms along with cowpea hay are major crop residues used for animal fattening in the West African Sahel. In traditional sheep fattening,feeds are always provided ad-hoc and in an unregulated fashion, which is rather wasteful. As a preliminary study to establish the optimal feeding leve...


Ayantunde, Augustine A.Delfosse, P.Fernández Rivera, S.Gerard, Bruno G.Dan-Gomma, A.[Supplementation with groundnut haulms for sheep fattening in the West African Sahel]Supplementation with groundnut haulms for sheep fattening in the West African Sahel

Forty-eight heifers of two genotypes, Boran (Bos indicus) and Holstein×Boran, were allocated to three feeding levels equivalent to 1.0, 1.2 and 1.4 times calculated metabolisable energy requirements for maintenance (MEm). The experiment started at the onset of reproductive activity, when the Bora...


Jenet, A.Fernández Rivera, S.Tegegne, AzageYimegnuhal, A.Osuji, P.O.Kreuzer, M.[Growth and feed conversion of Boran (Bos indicus) and Holstein X Boran heifers during three physiological states receiving different levels of a tropical diet]Growth and feed conversion of Boran (Bos indicus) and Holstein X Boran heifers during three physiological states receiving different levels of a tropical diet

Eighteen oxen were allotted to three treatment groups according to their body condition: poor, medium and good. Work output, speed, live weight and body condition were measured during 7 weeks when animals worked 4 days/ week, 4 h/day, pulling loads equivalent to 12.5 kg/100 kg live weight. The an...


Fall, AbdouPearson, R.A.Fernández Rivera, S.[Nutrition of draught oxen in semi-arid West Africa. 3. Effect of body condition prior to work and weight losses during work on food intake and work output]Nutrition of draught oxen in semi-arid West Africa. 3. Effect of body condition prior to work and weight losses during work on food intake and work output

A survey was conducted from February to June of 1997 among livestock herders in two villages of Niger, Kodey and Toukounous, on their perceptions, practice, and problems of night grazing. Cattle and sheep were the species that were taken out for night grazing by the herders. Small herd size an...


Ayantunde, Augustine A.Williams, Timothy O.Udo, H.M.J.Fernández Rivera, S.Hiernaux, Pierre H.Y.Keulen, H. van[Herders' perceptions, practice, and problems of night grazing in the Sahel: Case studies from Niger]Herders' perceptions, practice, and problems of night grazing in the Sahel: Case studies from Niger

Sixty-four Azawak male weaned calves were allotted to eight treatments (T) in two trials to study the effect of timing (day or day-and-night) and duration of grazing on diet selection, faecal output, eating time, forage intake and weight changes. Grazing time during the day was 6 h for T 1, 2 and...


Ayantunde, Augustine A.Fernández Rivera, S.Hiernaux, Pierre H.Y.Keulen, H. vanUdo, H.M.J.Chanono, M.[Effect of timing and duration of grazing of growing cattle in the West African Sahel on diet selection, faecal output, eating time, forage intake and live-weight changes and nutrition and performance of cattle]Effect of timing and duration of grazing of growing cattle in the West African Sahel on diet selection, faecal output, eating time, forage intake and live-weight changes and nutrition and performance of cattle

L'effet de differents types d'amendements associes ou non au parcage nocturne de bovins dans le champ, et celui de 1'application de furrier sur la production de mil et la fertilite du sol ont ete etudies. Laugmentation des rendements du mil dans le traitement paillage associe au parcage est expli...


Sangae, M.Fernández Rivera, S.Bationo, B. AndréHiernaux, Pierre H.Y.Pandey, U.S.[Effect de differents types d'amendements sur le rendement du nil et la fertilite du sol au Sahel]Effect de differents types d'amendements sur le rendement du nil et la fertilite du sol au Sahel
Jenet, A.Tegegne, AzageOsuji, P.O.Yimegnuhal, A.Kreuzer, M.McCrabb, G.J.Fernández Rivera, S.[Milk performance of lifetime underfed cows of different genotype (Zebu or Zebu x Friesian) in the tropics]Milk performance of lifetime underfed cows of different genotype (Zebu or Zebu x Friesian) in the tropics

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