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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 ...
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 ...
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 ...
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 ...
Can genomics cope with a 30% reduction of methane emission from livestock in 10 years?
(2022)
Livestock will face an important challenge within the next decade to cope with the objective of cut by 30% methane emissions, as agreed in the COP26. This study summarises the latest genetic parameter estimates between ...
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) ...
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 ...
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 ...
Study of the host genetic control over the ruminal microbiota and their relationships with methane emissions in dairy cattle
Estudio del control genético del hospedador sobre la microbiota ruminal y sus relaciones con emisiones de metano en bovino lechero
(2021-07-01)
The analysis of the host genetic control over its microbiota has recently been pointed out as a promising theme in different fields of study. The relationship between the host-microbiome holobiont and phenotypes in dairy ...