| Autor: |
G.X. Gbenou, M.H. Assouma, D. Bastianelli, T. Kiendrebeogo, L. Bonnal, N. Zampaligre, B. Bois, S. Sanogo, O. Sib, C. Martin, L.H. Dossa |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Animal, Vol 18, Iss 10, Pp 101320- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1751-7311 |
| DOI: |
10.1016/j.animal.2024.101320 |
| Popis: |
Rangeland fodder resources used to feed ruminants in the Sahel decline considerably in both quantity and quality from the wet to dry seasons. While it is widely assumed worldwide that this seasonality of fodder supply impacts intake levels and therefore enteric methane (eCH4) emissions, there are very few references based on in vivo measurements of eCH4 in this region. The purpose of this study was to test the assumption that the seasonality of fodder supply impacts intake levels and consequently eCH4 in ruminants. Thus, eCH4 was measured in vivo in Sudanese Fulani zebu cattle during three main seasons of the year (wet season: WS, cold dry season: CDS, and hot dry season: HDS). The experiment was carried out on 10 steers aged 32 months with an average (± SD) initial BW of 138 ± 5.8 kg (i.e. 0.55 Tropical Livestock Unit − TLU) and kept in individual pens. Animals were fed with natural rangeland fodder harvested each season following herders’ practices, i.e. green fodder in the WS and dry fodder hay in the CDS and HDS. Different levels of fodder were offered to the animals to reproduce the gradient of fodder availability on rangelands over the year (six trials): 3.3% BW during the CDS; 3.3, 2.3, and 1.4% BW successively during the HDS; and 2.3% in two sequential studies in the WS. Each trial lasted 3 weeks, split into 2 weeks of fodder adaptation and 1 week of data collection. The BW, quantity of voluntary DM intake, digestibility of DM digestibility and of OM digestibility, and eCH4 (GreenFeed® system) were measured for each animal. Fodder composition varied considerably between seasons (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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