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Fungal and ciliate protozoa are the main rumen microbes associated with methane emissions in dairy cattle
Background: Mitigating the effects of global warming has become the main challenge for humanity in recent decades. Livestock farming contributes to greenhouse gas emissions, with an important output of methane from enteric ...
Efecto del polimorfismo DGAT1 K232A sobre fenotipos productivos y reproductivos en el ganado bovino
Effect of DGAT1 K232A polymorphism on productive and reproductive fenotypes in cattle
El polimorfismo genético DGAT1 K232A es una sustitución no conservadora en el gen del mismo nombre, se trata de un cambio del aminoácido alanina por lisina, que tiene como consecuenciamayor actividad de la enzimaDiacilglicerol ...
Prevalencia de falla en la transferencia de inmunidad pasiva en terneras de lechería
El objetivo del presente estudio fue determinar por tercer año consecutivo, la falla en la transferencia de inmunidad pasiva en terneras de lechería en la Región Huetar Norte de Costa Rica. Los datos presentados corresponden ...
Effects of unprotected choline chloride on microbial fermentation in a dual-flow continuous culture depend on dietary neutral detergent fiber concentration
Choline is usually supplemented as ruminally protected choline chloride to prevent its degradation in the rumen, but the effects of unprotected choline on ruminal fermentation are unclear. Some research indicates a ...
Shrink, weighing accuracy, and weighing precision of mineral supplement in five commercial dairies in the Western United States
Shrink, accuracy, and precision of ingredient weighing are critical factors of effi ciency in TMR-fed dairy systems. Those factors have been evaluated for major feeds; however, we are not aware of any reports for ...
Effects of bacterial cultures, enzymes and yeast-based feed additive combinations on ruminal fermentation in a dual-flow continuous culture system
Bacterial cultures, enzymes, and yeast-derived feed additives are often included in commercial dairy rations due to their effects on ruminal fermentation. However, the effects of these additives when fed together are not ...
In vitro evaluation of Lactobacillus plantarum as direct-fed microbials in high-producing dairy cows diets
The objectives of this study were: 1) to compare the effects of live yeast (LY), yeast fermentation product (YFP), a mix of Lactobacillus acidophilus and Propionibacterium freudenreichii (MLP), and Lactobacillus plantarum ...
Effect of protease supplementation on apparent ileal crude protein and amino acid digestibility of over-processed soybean meals in broilers
Abstract Background: Nutritional value of proteins in feed ingredients can be negatively affected by hydrothermal processing, which causes large variation in the bioavailability of amino acids (AA) and negatively affects ...
Silage quality and bacterial diversity of silages inoculated with Listeria monocytogenes and Lacticasseibacillus paracasei_6714
Calidad de ensilado y diversidad bacteriana de los silos inoculados con Listeria monocytogenes y Lacticaseibacillus paracasei_6714
Introduction: King grass (Cenchrus purpureus (Schumach.) Morrone, syn. Pennisetum purpuphoides) and pineapple peel (Ananas comosus) silages are food alternatives for livestock in conditions of feed shortage. Objective: ...
Feeding heat-treated colostrum to neonatal dairy heifers: Effects on growth characteristics and blood parameters
Newborn Holstein heifer calves were studied to compare absorption of immunoglobulin G (IgG1 and IgG2), total serum protein concentration, lymphocyte counts, health scores, growth, and starter intake after receiving ...