Effects of rumen-protected niacin on inflammatory response to repeated intramammary lipopolysaccharide challenges.
Krogstad et al. (2024). J. Dairy Sci., 107, 8508-8522
Ruminants Press
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Effects of heat stress and dietary organic acids and botanicals on hepatic one-carbon metabolism
Heat stress develops with methyl donor deficiency in parallel with an impaired N metabolism. The supplementation of OA/PB improves the remethylation capacity in the liver. On-going transcriptomic analyses will provide a better understanding of the hepatic metabolism of dairy cows exposed to heat stress. -
Effects of ambient heat exposure and dietary organic acids and pure botanicals on gut permeability and milk production
Heat exposure compromises the gastrointestinal barrier and leads to inflammation in non-ruminants. Our results indicate that heat stress increases gut permeability and inflammation markers rapidly and independently of dietary intake. -
Intestinal health helps preventing milk loss linked to ketosis and heat stress
From an economic point of view, the lack of metabolic adaptation at the beginning of lactation (ketosis) and heat stress are two of the most important diseases for dairy cows as they seriously jeopardize the competitiveness of world animal husbandry and significantly reduce its efficiency. -
Assessing intestinal health. In vitro and ex vivo gut barrier models of farm animals: benefits and limitations
The concept of “gut health" is not well defined, but this concept has begun to play a very important role in the field of animal science. However, a clear definition of GIT health and the means by which to measure it are lacking. In vitro and ex vivo models can facilitate these studies, creating well-controlled and repeatable conditions to understand how to improve animal gut health. -
Heat stress develops with increased total-tract gut permeability, and dietary organic acid and pure botanical supplementation partly restores lactation performance in Holstein dairy cows
The aim of this study was to evaluate the effects of heat stress (HS) conditions and dietary organic acid and pure botanical (OA/PB) supplementation on gut permeability and milk production. -
Evaluation of a rumen-protected methionine product for lactating dairy cows at 2 concentrations of dietary crude protein
This study evaluated the effect of a supplemental rumen-protected Met product (Timet; VETAGRO S.p.A.; Reggio Emilia, Italy) on lactation performance and rumen measures of dairy cows fed 2 concentrations of dietary CP. -
In situ rumen degradability and in vitro intestinal digestibility of rumen-protected methyl donors and lysine
Rumen degradation and intestinal digestibility of rumen-protected (RP) methyl donor and lysine products vary. Our objectives were to evaluate the in situ rumen degradability and in vitro intestinal digestibility of 4 RP products containing choline chloride, dl-methionine, betaine, and/or l-lysine in a triglyceride matrix.