Karen A. Beauchemin

TL;DR: Among the different forms of HT applied to a high-protein alfalfa silage-based diet, both TA and CN had no effect onCH4 production, but decreased CP digestibility and shifted N excretion from urine to feces, whereas GA (i.e., HT subunit) decreased CH4 production and decreased the proportion of urea N in urinary N in beef cattle without affecting CP digestible.

TL;DR: The transient nature of the inhibition of methane production by the antibodies may have arisen from instability of the antibodies in ruminal fluid, or to the presence of non-culturable methanogens unaffected by the antibody activity that was administered.

TL;DR: A meta-analysis of data from in vitro studies was performed to identify the key enzymic activities in feed enzyme additives, and their dose rates, that improve degradation of alfalfa hay and corn silage as mentioned in this paper.

TL;DR: Results indicate adaptation of the ruminal epithelium continues with advancing time as evidenced by more stable ruminal pH both before and after an induced bout of acute ruminal acidosis but does not affect susceptibility of cattle to ruminal Acidosis.

TL;DR: McAllister et al. as mentioned in this paper investigated the effects of tannins in cattle diets on N content and greenhouse gas (GHG) emissions from manure composting, and showed that substituting DDGS for barley at 400 g/kg and adding 25g/kg CT to cattle diets increases the agronomic value of the manure and compost as fertilizer without increasing GHG emissions.