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Condiciones climáticas y la producción láctea del ganado jersey en dos pisos altitudinales
Climatic conditions and jersey cattle dairy production on two altitudinal levels
(2019-12-05)
Introducción. La precipitación, temperatura, radiación y humedad relativa varían según la altura, esto provoca la presencia de microclimas que afectan la productividad de los animales. Objetivo. Asociar las condiciones ...
Colouration in amphibians as a reflection of nutritional status: The case of tree frogs in Costa Rica
(2017-08-24)
Colouration has been considered a cue for mating success in many species; ornaments in males often are related to carotenoid mobilization towards feathers and/or skin and can signal general health and nutrition status. ...
Suplementación en sistemas de doble propósito
(2017-09)
En la ganadería de doble propósito costarricense, según información registrada por CORFOGA, el peso promedio del ternero al destete en el 2015 era de 141 kg, muy por debajo del peso ideal de 200 kg.
Para mejorar esta ...
Comparison of two non-destructive techniques to determine DM yield in the tropics
(2018-06)
Dry matter yield determines both stocking rate and animal carrying capacity on farms, but to estimate
such indicators, accurate yield measures are required. Some common techniques to estimate biomass in
pastures are ...
Exploration of semen quality analyzed by casa-mot systems of brahman bulls infected with BLV and BHV-1
(2023)
Enzootic bovine leukosis virus (BLV) and bovine herpesvirus 1 (BHV-1) are very important infectious agents for the livestock industry worldwide. The present study aimed to explore the association between natural exposure ...
Severidad de miopatías de pechuga y su relación con indicadores de bienestar productivos, fisiológicos y de comportamiento en pollos de engorde
Severity of breast myopathies and their relationship with productive, physiological and behavioral welfare indicators in broilers
(2022)
El objetivo de este experimento fue evaluar la relación entre diferentes grados de severidad de las
miopatías de pechuga, conocidas como pechuga de madera (PM) y estrías blancas (EB), con indicadores de bienestar
fisiológicos, ...
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 ...
Feeding and Nutrition of Anteaters
(2011-05-02)
The superorder Xenarthra (former Edentata) is grouped into two orders, Cingulata (armadillos) and Pilosa (anteaters and sloths). These are special mammals
that show unique traits: (1) the existence of secondary articulations ...
Additive genetic and heterosis effects for milk fever in a population of Jersey, Holstein × Jersey, and Holstein cattle under grazing conditions
(2018-08-30)
The aim of this study was to estimate additive genetic and heterosis effects for milk fever (MF) in Costa Rican dairy cattle. A farm-based management information software was used to collect 223,783 parity records between ...
No longer a leap in the dark: the importance of protein as an energy source in amphibians
(2019-09-18)
Amphibian nutrition has been highlighted as one of the disciplines requiring more investigation to support ex situ conservation programs. Specifically, anuran metabolism related to dietary nutrients is not yet investigated ...