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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 ...
Fungal and ciliate protozoa are the main rumen microbes associated with methane emissions in dairy cattle
(2022-01-30)
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 alojamiento, reuso de la cama y almacenamiento en la composición química de la pollinaza
Effect of housing, recycling and storage on poultry litter chemical composition
(2019-07-01)
Se efectuaron análisis químicos a 26 muestras de pollinaza fresca obtenida de 18 granjas de pollo de engorde con galeras abiertas o convencionales y galeras cerradas o tipo túnel con camas de un solo uso y reutilizadas de ...
Fertilidad química de suelos en fincas de ganado lechero ubicadas en la Cordillera Volcánica de Guanacaste, Costa Rica
Soil chemical fertility in dairy farms of the Guanacaste volcanic mountain range, Costa Rica
(2015-12)
El objetivo de esta investigación fue determinar la fertilidad de los suelos de fincas lecheras de cuatro zonas de la Cordillera Volcánica de Guanacaste. El estudio se llevó a cabo durante un periodo de dos años (2009-2010) ...
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
(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 ...
Structural equation models to disentangle the biological relationship between microbiota and complex traits: Methane production in dairy cattle as a case of study
(2019-09-18)
The advent of metagenomics in animal breeding poses the challenge of statistically modelling the relationship between the microbiome, the host genetics and relevant complex traits. A set of structural equation models (SEMs) ...
Relación entre concentración sanguínea de B-hidroxibutirato e indicadores productivos, reproductivos y de salud en hatos Jersey y Holstein
(2016)
Se correlacionó la concentración sanguínea de β-hidroxibutirato (βHBA) con indicadores productivos, reproductivos y de salud, en 2 hatos de vacas de alta producción, de las razas Jersey y Holstein, ubicados en Oreamuno ...
Risk factors associated with milk fever occurrence in grazing dairy cattle
(2017-11-30)
The aim of this study was to determine risk factors associated with milk fever (MF) occurrence in Costa
Rican grazing dairy cattle. A total of 69,870 cows from 126 dairy herds were included in the study. Data were collected ...
Holobiont effect accounts for more methane emission variance than the additive and microbiome effects on dairy cattle
(2021-05-11)
Rumen microbiota has been previously related to phenotypic complex traits of relevance in dairy cattle. The joint analysis of the host’s genetic background and its microbiota can be statistically modelled using similarity ...
A dimensional reduction approach to modulate the core ruminal microbiome associated with methane emissions via selective breeding
(2021-03-15)
The rumen is a complex microbial system of substantial importance in terms of greenhouse gas emissions
and feed efficiency. This study proposes combining metagenomic and host genomic data for selective
breeding of the ...