Enteric methane (CH4) is produced as a result of microbial fermentation of feed components in the gastrointestinal tract of ruminant livestock. Methane has no nutritional value for the animal and is predominately released into the environment through eructation and breath. Therefore, CH4 not only represents a greenhouse gas contributing to global w...
Feed costs represent half of the total costs of dairy production. One way to increase profitability of dairy production is to reduce feed costs by improving feed efficiency. As DMI is a trait that varies significantly during and across lactations, it is imperative to understand the underlying genetic architecture of DMI across lactation. Moreover, ...
Sainfoin (Onobrychis viciifolia): a forgotten crop for dairy cows with future potential SUMMARY The world population growth and rising incomes are expected to increase the consumption of animal-derived foods such as meat, eggs and milk. However, livestock production should not only be directed towards increasing productivity but should also incorpo...
Mitigation of methane production from dairy cows is critical to reduce the dairy industry’s contribution to the production of greenhouse gases. None of current used methane measurement methods are flawless and application of the methods is limited to assess the effects of methane mitigation methods under practical conditions. The main objective of ...
Research into manipulating methane (CH4) production as a result of enteric fermentation in ruminants currently receives global interest. Using feed additives may be a feasible strategy to mitigate CH4 as they are supplied in such amounts that the basal diet composition will not be largely affected. The latter is relevant because ruminants have the ...
Dit rapport presenteert de internationale kennis over de methaanproducties van dikke mestfracties en over de mogelijkheden om via voorbehandelingstechnieken de methaanproductie te verhogen. De methaanproductie van dikke mestfracties in batchtesten lag globaal tussen de 40 en 60 m3 methaan per ton. Perspectiefvolle technieken om de methaanproductie ...
As global demand for high-quality food originating from animal production is expected to rise due to an increasing human population and consumer income level, the expected role of ruminants in meeting this demand brings multiple challenges. Ruminant production needs to adapt to environmental changes and, at the same time, reduce its impact on the e...
Landbouwkundige activiteiten zijn een belangrijke bron van ammoniak (NH3), stikstofoxiden (NO), lachgas (N2O), methaan (CH4) en fijn stof (PM10 en PM2,5) in Nederland. De emissies voor de periode 1990-2013 zijn berekend met het National Emission Model for Agriculture (NEMA) met toepassing van nieuwe wetenschappelijke inzichten rond emissiefactoren ...
Het rantsoen heeft een grote invloed op de methaanuitstoot.Omdat gras een belangr k onderdeel is van het rantsoen, kekenWageningse onderzoekers naar de gevolgen van graskwaliteit opde methaanuitstoot. Een van de conclusies is dat een lichte maaisnedeminder methaanuitstoot geeft per kilogram meetmelk.
Landbouwkundige activiteiten zijn een belangrijke bron van ammoniak (NH3), stikstofoxide (NO), lachgas (N2O), methaan (CH4) en fijn stof in Nederland. De emissies voor de periode 1990-2012 zijn berekend met NEMA. In 2013 is NEMA uitgebreid met modules voor N2O, NO, CH4 en fijn stof. De rekenmethodiek gaat bij de berekening van de ammoniakemissie ui...
