Feeding behavior in dairy cattle has a significant impact on feed efficiency, which is important for increasing the profitability of livestock and, at the same time, reducing the environmental impact. Feeding behavior can be measured by feeding time, meal duration, meal frequency, feeding rate, and rumination time. Higher feed intake…
A bioactive extract from Olea europaea (OBE) can stimulate secretion of glucagon-like peptide-1 (GLP-1) and GLP-2, through bile acid receptor TGR5. Increasing circulation of GLP-2 promotes beneficial effects on intestinal function, which can be compromised in preruminant calves. The aims of this study was to determine the optimal inclusion level…
We have previously obtained evidence on presence and functioning of central amino acid sensing systems in fish after intracerebroventricular injection of branched-chain amino acids (BCAA) L-leucine and L-valine. In hypothalamus these systems were activated by L-leucine but not by L-valine. The mechanisms involved are similar to those described in mammals:…
There is a lack of research on potential effects of supplementation on metabolic profile in grazing dairy cows. Therefore, 45 Holstein dairy cows (147 DIM, 544 kg BW) were assigned to a 3 × 3 Latin square design replicated 15 times to evaluate the effect of sensory additive compound by…
Forty-five Holstein dairy cows (147 d-in-milk and 544 kg BW on average) were assigned to a 3 × 3 Latin square design replicated 15 times to evaluate the effect of a sensory additive (ProEfficient, PE; Lucta SA, Barcelona, Spain) on milk response to concentrate supplementation on pasture. Cows were blocked…
The aim of this study was to evaluate changes in feeding behavior and performance of lactating dairy cows in response to the addition of sensory additives into their TMR. A 90-d experiment was conducted involving 42 lactating cows (15 primiparous, 27 multiparous; BW = 690 ± 63 kg; DIM =…
Diarrhea episodes in dairy calves involve profound alterations in the mechanism controlling gut barrier function that ultimately compromise intestinal permeability to macromolecules, including pathogenic bacteria. Intestinal dysfunction models suggest that a key element of intestinal adaptation during the neonatal phase is the nutrient-induced secretion of glucagon-like peptide (GLP)-2 and associated…
Forty 5 Holstein dairy cows (62 DIM, 501 kg BW) were assigned to a 3 × 2 incomplete Latin square (LS) design replicated 15 times to evaluate the effect of a sensory additive (ProEfficient, PE) on milk response to concentrate supplementation on pasture. Cows were blocked by parity in 15…
