Glucagon-like peptide 2 (GLP-2) is a peptide released by the lower gut that has potent trophic and restorative effects on the intestinal epithelium. Two experiments were conducted to assess the effects of feeding rate and either metabolizable or nonmetabolizable glucose supplementation on GLP-2 concentrations in plasma and intestinal development in…
Lying behaviour is a high priority behaviour. Lack of lying and sleep has an impact on both production and welfare of dairy cows. Housing has a substantial effect on the lying behaviour, overall health and performance of dairy cattle. Each housing system has its own advantages and disadvantages in terms…
Con el objeto de evaluar el efecto de un aditivo sensorial (ProEfficient ®, PE) sobre la respuesta productiva, composición láctea, peso vivo, comportamiento de pastoreo, y concentración plasmática de grelina, se diseñó un experimento por 56 días en primavera del año 2014, en dos periodos de 28 días, y donde…
Forty four Holstein dairy cows (156 DIM, 28.9 kg/d of milk, 648 kg of BW) were assigned to a 4 x 4 Latin Square design with 25-d periods replicated 11 times to evaluate the dose response to a sensory additive (ProEfficient, PE; Lucta S.A.) on eating behavior of dairy cows…
La conducta de descanso es muy importante para las vacas de leche y la falta de descanso y de sueño tienen un impacto negativo muy pronunciado sobre la producción y el bienestar de las vacas lecheras. Las instalaciones tienen un efecto sustancial en la conducta de descanso, la salud y…
Traditionally, bile acids (BA) have been viewed as detergent molecules involved in the intestinal digestion and absorption of lipids and hepatic maintenance of cholesterol homeostasis. During the last 15 years, however, it has become clear that BA are important regulatory molecules with systemic endocrine functions that signal changes in luminal…
Heat stress negatively impacts a variety of productive traits in dairy cattle including milk yield, growth, and reproduction. advances in environmental management (i.e., cooling systems and barn construction) have alleviated some of the negative impact that thermal stress has on animal performance, but production still decreases during the summer months.…
En cualquier especie animal, la modulación del comportamiento ingestivo implica cambios en su patrón de consumo en el corto plazo, el cual se evalúa teniendo en cuenta la distribución, el número, el tamaño y la duración de las comidas a lo largo del día, partiendo de la base de que…
Seventy-six newborn Holstein calves (44.4 ± 6.15 kg of body weight) were involved in this study from birth until 21 d of age. Within 2 h after birth, calves received 4 L of maternal colostrum via an esophageal tube. The following 3 meals consisted of 2 L of late colostrum…
Heat stress is one of the greatest challenges faced by dairy farmers in many regions of the world. Warm climates depress feed intake, milk production, and reproductive performance in cows. In this document, the negative effects of heat stress on production and welfare of dairy cows are described, as well…