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Sammanfattning

Achieving optimal nutrient composition in locally sourced ruminant feeds is important, but can be challenging in resource-limited production systems. For example, improving the composition of available local feed resources is a key obstacle to efficiently mitigating enteric methane (CH4) emissions in ruminants. This study characterized the nutritional content and in vitro methane (CH4) yield of ruminant feedstuffs accessible in Ethiopia. A survey of 60 experienced farmers in two representative districts in Amhara region, Ethiopia, provided 33 feed samples, which were classified into four ruminant feed categories: Grasses (n=10); indigenous plants (trees, shrubs, herbaceous plants) (n=13); crop residues (n=5); and agro-industrial by-products (n=5). Nutritional composition was assessed by proximate and detergent methods. Methane yield (g CH4/kg feed dry matter (DM)) and total gas yield (L/kg DM) were evaluated using a fully automated in vitro gas production system. A colorimetric assay was conducted to measure condensed tannin content (CT, mg/g) in relevant feeds. Lower crude protein (CP) values were observed for the grass (mean 65.2 g/kg DM) and crop residues (mean 54.5 g/kg DM) categories. Agro-industrial by-products had the highest CP (mean 260 g/kg DM), while indigenous plants exhibited intermediate levels (163 g/kg DM). There was significant variation in CH4 yield (P

Nyckelord

Local feeds; CH4; condensed tannins; in vitro dry matter digestibility; CH4 gas percentage

Publicerad i

Animal Feed Science and Technology
2024, volym: 312, artikelnummer: 115977

SLU författare

Globala målen (SDG)

SDG2 Ingen hunger
SDG12 Hållbar konsumtion och produktion

UKÄ forskningsämne

Husdjursvetenskap

Publikationens identifierare

  • DOI: https://doi.org/10.1016/j.anifeedsci.2024.115977

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/129443