Listar Zootecnia por título
Mostrando ítems 119-138 de 369
-
Efecto del picado sobre las características nutricionales y fermentativas de ensilajes de pastos kikuyo, ryegrass perenne y alpiste forrajero
(2016-08-27)Se evaluó el efecto del picado sobre las características nutricionales y fermentativas de ensilajes elaborados con 3 pastos (kikuyo, ryegrass perenne y alpiste forrajero). Se elaboraron 2 microsilos de cada pasto en bolsas ... -
Efecto del polimorfismo DGAT1 K232A sobre fenotipos productivos y reproductivos en el ganado bovino
(2018-06-18)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 ... -
Efectos de la suplementación de metionina, treonina y triptófano sobre el rendimiento productivo y la calidad de canal de los cerdos en crecimiento bajo condiciones comerciales de producción
(2020-10-17)El objetivo de este experimento fue determinar si la suplementación de metionina, treonina y triptófano en la dieta de cerdos en crecimiento y engorde criados en condiciones comerciales mejora su rendimiento productivo ... -
Effect of alternative synchronisation treatments on the vaginal microbiota of ewes and their impact on pregnancy rate
(2022)The low pregnancy rate by artificial insemination in sheep represents a fundamental challenge for breeding programmes. In this species, estrous synchronization is done by manipulating hormonal regimens through the insertion ... -
Effect of dietary carotenoids on vitamin A status and skin pigmentation in false tomato frogs (Dyscophus guineti)
(2014-09-29)Several species in captivity develop nutritional diseases including vitamin A deficiency; cases of this disease have been documented in amphibians, which may be linked to an insectivorous diet lacking in vitamin A or ... -
Effect of heat treatment of bovine colostrum on bacterial counts, viscosity, and immunoglobulin G concentration
(2010)A study was conducted to identify the optimal temperature and time at which heat treatment of bovine colostrum would least change viscosity and IgG concentrations yet reduce bacterial count. First-milking colostrum ... -
Effect of protease supplementation on apparent ileal crude protein and amino acid digestibility of over-processed soybean meals in broilers
(2022-07-11)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 ... -
Effects of a prebiotic supplement on health of neonatal dairy calves
(2009)Calf morbidity and mortality represent major financial losses for many dairy producers. The primary cause of calf mortality in the U.S. is diarrhea caused by intestinal bacterial infections. Traditionally, formulated ... -
Effects of bacterial cultures, enzymes and yeast-based feed additive combinations on ruminal fermentation in a dual-flow continuous culture system
(2021)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 ... -
Effects of calcium-magnesium carbonate and calciummagnesium hydroxide as supplemental sources of magnesium on ruminal microbiome
(2022)Our objective was to evaluate the inclusion of calcium-magnesium carbonate [CaMg(CO3 ) 2 ] and calcium-magnesium hydroxide [CaMg(OH)4 ] in corn silage-based diets and their impact on ruminal microbiome. Our previous ... -
Effects of calcium–magnesium carbonate and calcium–magnesium hydroxide as supplemental sources of magnesium on microbial fermentation in a dual-flow continuous culture
(2020-12-22)Supplemental sources of Mg can also aid in ruminal pH regulation due to their al kaline properties. Magnesium oxide (MgO) is the most common source of Mg for ruminants and can help controlling ruminal pH; however, ... -
Effects of cashew nut-shell extract and monensin on microbial fermentation in a dual-flow continuous culture
(2023-09-09)The objective of this study was to compare cashew nut-shell extract (CNSE) to monensin and evaluate changes in in vitro mixed ruminal microorganism fermentation, nutrient digestibility, and microbial nitrogen outflow. ... -
Effects of choline chloride on the ruminal microbiome at 2 dietary neutral detergent fiber concentrations in continuous culture
(2022)Our objective was to evaluate the effects of unprotected choline chloride (Cho) on the ruminal microbiome at 2 dietary neutral detergent fiber (NDF) concentrations. We hypothesized that the effects of Cho on ruminal ... -
Effects of commercial and farm-made inoculants on the chemical composition and fermentation of kikuyu grass silages
(2022-03)Ensiling allows for more efficient pasture utilization in kikuyu (Cenchrus clandestinus Hochst. ex Chiov.)-based forage systems. However, the chemical composition of kikuyu challenges this process. Additives can improve ... -
Effects of exogenous amylolytic or fibrolytic enzymes inclusion on in vitro fermentation of lactating dairy cow diets in a dual-flow continuous-culture system
(2023)The objective of this study was to determine the effects of including exogenous amylolytic or fibrolytic enzymes in a diet for high-producing dairy cows on in vitro ruminal fermentation. Eight dual-flow continuousculture ... -
Effects of lactic acid-producing bacteria as direct-fed microbials on the ruminal microbiome
(2022)The objective of this study was to evaluate ruminal microbiome changes associated with feeding Lactobacillus plantarum GB-LP1 as direct-fed microbials (DFM) in high-producing dairy cow diets. A dual-flow continuous culture ... -
Effects of neutral detergent fiber digestibility estimation method on calculated energy concentration of canola meals from 12 Canadian processing plants
(2021)Our aim was to determine whether the method used to estimate truly digestible neutral detergent fiber (tdNDF) affects calculated concentrations of total digestible nutrients (TDN1x) and net energy of lactation (NEL3x) of ... -
Effects of partially replacing dietary corn with molasses, condensed whey permeate, or treated condensed whey permeate on ruminal microbial fermentation
(2022)Corn is a feedstuff commonly fed to dairy cows as a source of energy. The objective of this study was to evaluate whether partially replacing dietary corn with molasses or condensed whey permeate, in lactating dairy ...