Supplementing zebu cattle with crop co-products helps to reduce enteric emissions in West Africa

Gbenou Gérard Xavier, Assouma Mohamed Habibou, Bastianelli Denis, Kiendrebeogo Timbilfou, Bonnal Laurent, Zampaligre Nouhoun, Bois Bérénice, Sanogo Souleymane, Sib Ollo, Martin Cécile, Dossa Luc Hippolyte. 2024. Supplementing zebu cattle with crop co-products helps to reduce enteric emissions in West Africa. Archives of Animal Nutrition, 18 p.

Résumé : In Africa, a wide variety of diets (forage + crop co-products or other agricultural by-products) is being used by livestock farmers in different production systems to adapt to climate change. This study aimed to assess the performance of various local feeding strategies on Sudanese Fulani zebu cattle. Two experiments were carried out on 10 steers aged initially 33 months (142 kg body weight – BW). The animals were fed eight different diets at an intake level of 3.2% LW in dry matter (DM), including two control diets of 100% rangeland forage (100% RF) and six experimental diets made up of forage and crop co-products (75:25 DM ratio). In the first experiment, the control diet was made up of rangeland forage (RF) and supplements consisted of four cereal co-products (CC), i.e. maize, sorghum, millet, and rice straws. In the second experiment, the control diet consisted of Panicum maximum (Pmax) hay, and the supplements tested were two legume co-products (LC), i.e. cowpea and peanut haulms. Each experiment lasted 3 weeks, including 2 weeks of adaptation to the diet and 1 week of data collection on individual animals (intake, apparent digestibility, and enteric methane). The NDF content of the diets was different within each experiment (p < 0.05). Among diets containing CC, DM intake [g/kg BW] was significantly higher (+31%; p = 0.025) for the diet containing rice straw than for the other diets, which showed similar levels to the RF diet. Among diets containing LC, intake was significantly higher (p = 0.004) than for the Pmax diet. Intake was higher for the peanut haulm diet than for the cowpea haulm diet. The DM digestibility was similar between the different diets in each experiment. Enteric methane (eCH4) yield [g/kg DMI] from the CC and LC-containing diets were reduced by an average of 23% and 20% compared to the RF and Pmax control diets respectively. Raising awareness among agro-pastoralists about the use of crop co-products offers real prospects for eCH4 emissions mitigation in the Sahel region.

Mots-clés Agrovoc : régime alimentaire, adaptation aux changements climatiques, zébu, composition chimique, spectroscopie infrarouge, Panicum maximum, alimentation des animaux, méthane entérique, changement climatique, prise alimentaire (animaux), valeur nutritive, comportement alimentaire

Mots-clés géographiques Agrovoc : Burkina Faso, Sahel, Afrique occidentale

Mots-clés libres : Gaz à effet de serre, Méthane entérique, Alimentation des animaux

Agences de financement européennes : European Commission

Programme de financement européen : DeSIRA

Projets sur financement : (EU) Sequestration and Green-house Gas Emissions in (Agro) Sylvopastoral Ecosystems in the Sahelian CILSS States

Auteurs et affiliations

• Gbenou Gérard Xavier, CIRAD-ES-UMR SELMET (FRA) - auteur correspondant
• Assouma Mohamed Habibou, CIRAD-ES-UMR SELMET (BFA) ORCID: 0000-0002-8163-0340 - auteur correspondant
• Bastianelli Denis, CIRAD-ES-UMR SELMET (FRA) ORCID: 0000-0002-6394-5920
• Kiendrebeogo Timbilfou, CNRST (BFA)
• Bonnal Laurent, CIRAD-ES-UMR SELMET (FRA) ORCID: 0000-0001-5038-7432
• Zampaligre Nouhoun, CNRST (BFA)
• Bois Bérénice, Université de Montpellier (FRA)
• Sanogo Souleymane, CIRDES (BFA)
• Sib Ollo, CIRAD-ES-UMR SELMET (BFA) ORCID: 0000-0001-6382-6692
• Martin Cécile, UCA (FRA)
• Dossa Luc Hippolyte, UAC (BEN)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610034/)

Métriques

[ Page générée et mise en cache le 2024-07-23 ]