The effects of butyrate supplementation in diets of calves are inconsistent in the literature. Fifty one Holstein calves (45.7 ± 5.8 kg of bodyweight and 11.8 ± 3.1 days of age; mean ± s.d.) were randomly allocated to three treatments to assess the effects of supplementing the milk replacer at…
Glucagon-like peptide 2 (GLP-2) may have therapeutic potential in young calves encountering stressors, such as weaning and diarrheal disease, because of its pleiotropic actions on intestinal mucosal and barrier function. During diarrhea, feed intake decreases, which is a major negative effector of GLP-2 secretion and increases intestinal atrophy. We determined…
El estrés por calor es uno de los mayores desafíos a los que se enfrentan los productores de vacuno lechero en muchas regiones del mundo. El estrés por calor reduce el consumo de alimento y la cantidad y calidad de leche producida por las vacas, además de tener efectos negativos…
La regulación del comportamiento ingestivo en vacas lecheras se ha asociado a factores que estimulan la saciedad y el apetito. Al respecto, los aditivos sensoriales estimulan el consumo de materia seca debido a cambios en el comportamiento en pastoreo tamaño y frecuencia de comidas; Mereu et al., 2011; Iglesias et…
The aim of the present study was to assess whether the feeding pattern displayed by sheep exposed to a monotonous ration is modified when the same ration is presented in a diversity of flavours and if such diversity influences nutrient intake and digestibility. Twelve commercial crossbred wether lambs were assigned…
Introducción El uso de pasturas para producir leche resulta en sistemas de producción de bajo costo porque el forraje pastoreado es una fuente de nutrientes barata (Clark y Kanneganti, 1998; Peyraud y Delaby, 2001). Los sistemas de producción de leche pastoriles eficientes están caracterizados por una alta producción de leche…
In 3 experiments, we assessed preference of recently weaned dairy calves for (1) 8 high-energy feed types [barley meal, corn meal, corn gluten feed (CGF), oat meal, rice meal, sorghum meal, wheat meal, and wheat middlings meal]; (2) 6 high-protein feed types [corn gluten meal (CGM), wheat distillers dried grains,…
Six Holstein dry cows were used to evaluate the effect of a sensory additive (ProEfficient, Lucta S.A.) on eating behavior in a complete randomized design. Cows divided into 2 pens were randomly assigned to 2 treatments: control TMR or the same TMR supplemented with ProEfficient (PE) at a dose of…
Five hundred seventy Holstein dairy cows (280 primiparous and 290 multiparous; 194 DIM and 34.4 kg/d milk) from the commercial dairy farm El Trébol (Durango, México) were used to evaluate the effect of a sensory additive (ProEfficient, Lucta S.A.) on dry matter intake, milk production, and feed conversion efficiency under…
The objective of this study was to evaluate the effect of improving forage palatability on DM intake, milk production and composition, and rumen pH of lactating cows. Twenty one multiparous and 7 primiparous Holstein cows averaging 697 kg in body weight (SD ± 81), 54 DIM (SD ± 32), and…