Article (Scientific journals)
Influence de la localité, de l’année et de la saison sur la productivité et la qualité des herbes de parcours naturels en zone soudanienne au Tchad
Chaib, Imran Ahmat; Mama, Adi; Lesse, Paolo et al.
2026In Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux, 79, p. 1-10
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Keywords :
cattle; grazing lands; carrying capacity; feed nutrient content; Chad
Abstract :
[en] n Chad, natural pastures constitute the basis of rumi-nant nutrition. Their productivity depends on edaphic and climatic conditions. In the Barh Kôh department (Middle Chari province), knowledge relating to the productivity of natural pastures, carrying capacity, cattle eating behavior and nutritional value of forage is limited and is a constraint to the formulation of supplementary rations. Aim: This investigation aimed to quantify voluntary intake at pasture as well as to and characterize the nutritive value of forage consumed according to location (sub-prefecture), year and season. Methods: The present studies were carried out in the Sudanian zone on 4 natural pastures in the localities of Balimba, Koumogo, Moussa Foyo and Sarh rural. The productivity of these natural pas-tures was first assessed in 2019, followed by a reassessment in 2021. In addition, a study of the eating behavior of Goudali zebu cattle (Bos taurus indicus), locally known as Bogolodji or Bokolodji, was carried out during the rainy season over a period of 10 days for natural pastures. Results: The productivity of the pastures and their carrying capacity were 3.18± 0.47 tDM/ha and 1.18± 0.27TLU/ha/year. Productivity varied significantly between localities (p < 0.05) and was influenced by the year (p < 0.001). Following significant precipitation that felt in Barh Kôh in 2019 (1.237 mm), the forage productivity was higher (4.7 tDM/ha) but it decreased to 50% in 2021. The season had no significant effect on the productivity of the pastures (p >0,05) (3.3± 0.5 compared to 3.0± 04 tDM/ha respectively in the middle of the rainy season and at the beginning of the dry season). Cattle ingested 7,86 kgDMper day of forage consisting of half grasses and a quarter each of herbaceous legumes and woody plants containing 0.55 UFL and 0.47 UFV per kg DM (French system of net energy evaluation). Proteins digestible at the intestinal level according to available nitrogen (PDIN = 92 g/kgDM) are on average 10% higher than the intestinal digestibility of proteins according to available energy (PDIE = 82 g/kg DM) (French system of proteins evaluation). Conclusion: These results allow effective management of Sudanese-type area and guide strategies for supplementing cattle in Chad.
Research Center/Unit :
FARAH. Productions animales durables - ULiège
Disciplines :
Animal production & animal husbandry
Author, co-author :
Chaib, Imran Ahmat 
Mama, Adi
Lesse, Paolo 
Orou Daouda, Bello
Mian-Oudanang, Koussou
Bonnal, Laurent 
Babatounde, Séverin
Hornick, Jean-Luc  ;  Université de Liège - ULiège > Département de gestion vétérinaire des Ressources Animales (DRA)
Language :
French
Title :
Influence de la localité, de l’année et de la saison sur la productivité et la qualité des herbes de parcours naturels en zone soudanienne au Tchad
Publication date :
13 March 2026
Journal title :
Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux
ISSN :
0035-1865
eISSN :
1951-6711
Publisher :
CIRAD (Centre de Cooperation Internationale en Recherche Agronomique Pour le Developpement)
Volume :
79
Pages :
1-10
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
1. No poverty
2. Zero hunger
Funders :
BID - Banque Islamique de Développement
Available on ORBi :
since 14 March 2026

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