A Meta-analysis of the Production Impacts of Monensin in Lactating Dairy Cattle
Keywords:propionic acid, rumen microbe, production impact, milk fat content, Meta-analysis
Monensin increases propionic acid production through effects on rumen microbial populations. Recently, approvals for use on monensin have been obtained in Canada and the United States, while the product has been available for dairy cattle in many other countries such as Mexico, Australia and New Zealand for many years. The impact of monensin on production, especially on milk fat content have been inconsistent. Meta-analysis is a useful tool that can be employed to both summarize effects across studies and to investigate factors explaining potential heterogeneity of response.