Effect of antibiotic treatments on dairy cow methane production, milk yield and dry matter intake

摘要

Assessing the milk yield and methane production, from healthy and antibiotic treated dairy cows using a laser methane detector (LMD).Enteric methane (CH4) in dairy cows is a result of the fermentation of rumen contents and can be affected by the amount and quality of the feed (Moss eta al., 2000). The use of antibiotics to treat diseases such as lameness and mastitis are generally given as an injection and will affect the microbiology of the rumen (Russell & Strobel, 1989) and potentially the efficiency of the rumen (Jewell et al., 2015). Nonintrusive estimates of enteric CH4 can be obtained using a LMD and has been used as a proxy for rumen function (Chagunda et al, 2009). The aims of this study were to assess the production of enteric methane from cows treated with antibiotics and to compare CH4, dry matter (DM) intakes and milk production from treated cows with a paired group ofhealthy cows.