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| Content Provider | African Journals Online (AJOL) |
|---|---|
| Author | E. Pamo Tedonkeng Z. Kambale Muhindo E. Miegoue F. Tendonkeng |
| Abstract | L’influence de la fréquence de fauche sur la production de biomasse et la composition chimique du foin de Pennisetum clandestinum a été étudiée entre mars 2015 et mars 2016 à l’Université de Dschang. L’objet de l’étude était de contribuer à l’amélioration de la gestion d’une culture de P. clandestinum en vue d’assurer un disponible fourrager permanent en quantité et qualité optimales par le recours à la fenaison. A cet effet, un dispositif expérimental en bloc complètement randomisé comparant trois fréquences de fauche (30, 45 et 60 jours de croissance) en 8 répétitions sur des planches de 4 m2 (2m x 2m) chacune, soit un total de 24 planches par bloc, a été utilisé pour la culture de P. clandestinum. Le fourrage a été successivement fauché à chaque fréquence durant une saison culturale. Des échantillons de fourrage ont été prélevés à chaque fauche pour l’évaluation de la biomasse tandis que le reste du fourrage a été séché au soleil pour la production du foin. Des échantillons de foin de chaque fréquence de fauche ont été analysés pour la détermination de la composition chimique. Les résultats obtenus ont montré que l’augmentation de l’intervalle de fauche (30, 45 et 60 jours) a entraîné une augmentation non significative (p>0,05) de la biomasse totale (16,10 ; 18,64 et 19,41 t MS/ha) et significative (p<0,05) de la biomasse moyenne (2,68 ; 4,66 et 6,47 t MS/ha). La composition chimique du fourrage a montré que l’augmentation de l’intervalle de fauche a eu pour effet l’augmentation significative (p<0,05) des teneurs en MS, MO, NDF, cellulose, hémicellulose et glucides totaux. La tendance inverse a été observée avec les cendres, les protéines brutes, la digestibilité de la matière organique, les matières azotées digestibles, les unités fourragères lait et viande. Enfin, la teneur en lipides la plus élevée (2,89 %) a été obtenue avec la fréquence de 45 jours. Tenant compte, à la fois, de la quantité (biomasse produite) et de la qualité (composition chimique), il ressort de cette étude que la fauche de 45 jours constitue l’option de choix d’exploitation optimale de la culture de P. clandestinum pour une fenaison.Mots clés: Biomasse, composition chimique, foin, intervalle de fauche, Pennisetum clandestinum. |
| Ending Page | 1468 |
| Starting Page | 1459 |
| File Format | |
| ISSN | 19918631 |
| e-ISSN | 1997342X |
| DOI | 10.4314/ijbcs.v12i3.31 |
| Journal | International Journal of Biological and Chemical Sciences |
| Issue Number | 3 |
| Volume Number | 12 |
| Language | English French |
| Publisher Date | 2018-11-09 |
| Access Restriction | Open |
| Subject Keyword | Biology Life Sciences Chemistry Mathematics Physics General Science Biomasse composition chimique foin intervalle de fauche Pennisetum clandestinum. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Decision Sciences Chemistry Biotechnology Molecular Biology |
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