Listar Zootecnia por título
Mostrando ítems 225-244 de 372
-
Importancia del calostro en terneras de lechería
(2013)En una vaca preñada o gestante, los anticuerpos, al igual que los nutrientes, se encuentran circulando en su torrente sanguíneo. Los nutrientes pasan del torrente sanguíneo de la vaca al feto sin ningún problema. Sin ... -
Improving phenotypic prediction in dairy cattle breeding using the metagenome
(2019-11-18)Ruminants evolved from Artiodactyla in the Eocene 50–70 million years ago. In that period, grass began to populate the largest land surface on Earth. Since then, ruminants and their microbiota have evolved together in ... -
In vitro evaluation of Lactobacillus plantarum as direct-fed microbials in high-producing dairy cows diets
(2019-12-21)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 ... -
In vitro evaluation of microencapsulated organic acids and pure botanicals as a supplement in lactating dairy cows diet on in vitro ruminal fermentation
(2023)The utilization of microencapsulated organic acids and pure botanicals (mOAPB) is widely used in the monogastric livestock industry as an alternative to antibiotics; in addition, it can have gut immunomodulatory functions. ... -
In Vitro Evaluation of Postbiotics Produced from Bacterial Isolates Obtained from Rainbow Trout and Nile Tilapia against the Pathogens Yersinia ruckeri and Aeromonas salmonicida subsp. salmonicida
(2023)The use of antibiotics in aquaculture leads to the proliferation of multidrug-resistant bacteria, and an urgent need for developing new alternatives to prevent and control disease has, thus, arisen. In this scenario, ... -
In vitro neutral detergent fiber digestibility (IVNDFD) of 9 forages in the highlands and lowlands in Costa Rica
(2018)The objective of this study was to determine the effects of the grazing age in the in vitro digestibility of the neutral detergent fiber of forages in the highlands and the lowlands dairy farms in Costa Rica. Nine forages ... -
Incumplimiento en el contenido nutricional de alimentos importados para mascotas en Costa Rica
(2023-05-01)La normativa que regula los alimentos balanceados asegura el bienestar de las mascotas, la salud pública y la seguridad al consumidor, por lo que es valioso corroborar el contenido de los nutrimentos declarados en las ... -
Indicadores de bienestar en pollos de engorde en la primera semana de vida en Costa Rica
(2022)Los aspectos que constituyen el bienestar animal son complejos y multidimensionales. La primera semana de vida es crítica en el desarrollo de los pollos, y los problemas de bienestar son el resultado de una acumulación de ... -
Inmunocompetencia y estado nutricional de terneras de lechería alimentadas con calostro retrovirus-positivo: estrategias para mejorar la transferencia pasiva
(2023)Cuarenta terneros (29 hembras y 11 machos) fueron asignados sistemáticamente a uno de dos grupos, como sigue: [1] suministro de 1,8 L de calostro materno o 171 g de IgG (grupo CM o A1, n=20) y [2] suministro de 1,5 L de ... -
Interseeding cool-season forages into corn to increase yield and quality of residue grazed in the fall
(2015-07-23)Six forage species/mixtures were interseeded into irrigated grain corn to evaluate their yield and nutritional quality as a means of improving diets for beef cattle grazing cornstalks during the fall. Species evaluated ... -
Investigating the gastrointestinal physiology of mature horses with and without a history of cribbing behavior in response to feeding a digestive support supplement
(2024)Cribbing, a stereotypic oral behavior observed in horses, involves placing incisors on a fixed object, arching the neck, pulling against the object, and emitting an audible grunt. This behavior has been associated with ... -
Invited review: Novel methods and perspectives for modulating the rumen microbiome through selective breeding as a means to improve complex traits: Implications for methane emissions in cattle
(2023-02-03)The rumen microbiome is responsible for methane emission in ruminants. The study of microbes in the rumen has attracted great interest in the last decade. High-throughput sequencing technologies have been key in expanding ... -
It saves lives
(2008)Esophageal feeders are an effective tool to get colostrum into newborn calves. By following a few simple steps, a good employee can easily use it safely and, most important, immunoglobulin absorption rates compare favorably ... -
Índices productivos y reproductivos de fincas de cría de ganado bovino de carne en la zona Sur de Costa Rica
(2017-09-28)Los indicadores productivos y reproductivos permiten conocer la situación de los sistemas de producción de ganado bovino. Para conocer la eficiencia de 23 fincas ubicadas en la zona Sur de Costa Rica, analicé ... -
Jornada de actualización regional técnica
(2018-09-06)El Equipo Técnico Regional de Ganadería del Pacífico Central, desarrolló una “Jornada de Actualización Técnica”, con el objetivo de uniformar y alinear criterios e introducir términos sobre tecnologías aplicadas en el ... -
Know Your Community: Animal Agriculture and the Environment
(2020)The Animal Agriculture and the Environment (AAE) Community of ASA (Environmental Quality Section) brings together members of different backgrounds to understand how livestock operations have the potential to reduce their ... -
La leucosis enzoótica bovina: un asesino silencioso
(2019)La leucosis enzoótica bovina (LEB) es una enfermedad crónica con una virulencia muy alta extendida por todo el mundo. El virus de la LEB es un retrovirus que infecta los linfocitos B de la sangre y sintetiza el ADN para ... -
Lombriz: aliada de la agricultura y la naturaleza
(2003)La lombriz de tierra es un pequeno animal que para muchos pasa inadvertido y para otros es causa de desagrado. Sin embargo, brinda una serie de beneficios que son desconocidos por muchas personas. -
Make handling of post-pasteurized waste milk a priority
(2008)All dairy operations have a supply of milk that is not saleable, commonly called waste or discard milk. Waste milk as documented in one study, can range from 48 to 137 pounds per cow per year, representing a huge ...