The objective of this study is to explore the potential of including genomic information and its effect on selection response in the three main UK sheep breeding sectors; hill, longwool, and terminal sheep breeds. Different training and effective population sizes were simulated and the inclusion of new production efficiency traits was also tested.
The purpose of this study is to estimate the genetic correlation between FEC and the main production traits for the Merino in Uruguay.
The purpose of this paper is to present the single step methodology with focus on efficient implementation and modification of existing software.
The objectives of this research were to present efficient computing options to create such relationships matrices based on genomic markers and pedigree information, as well as their inverses.
Los cultivos de arroz en Uruguay se caracterizan por presentar una baja carga de insecticidas, particularmente en la Región Este, lo que le otorga a esta producción un valor agregado, al conservar la diversidad presente en los cultivos y ser ambientalmente más sostenible en comparación con otros métodos de producción. Dentro de los principales depredadores de insectos se encuentran las arañas.
En Uruguay los pastizales naturales son el sustento de la ganadería y por lo tanto el principal recurso natural renovable del país. El mantenimiento de la biodiversidad en estos sistemas es valioso para garantizar la provisión de diversos servicios ecosistémicos. Las arañas como grupo mega-diverso son excelentes modelos de estudio para la evaluación de impactos ambientales de este tipo. El primer objetivo de este estudio fue describir la comunidad de arañas de los pastizales naturales en sistemas ganaderos de Uruguay.
SUMMARY. The association between residual feed intake (RFI) and growth, carcass and meat quality traits were investigated using 233 Hereford steers. Individual feed intake, body liveweight, average daily gain and ultrasound measurements were recorded during 70-d post-weaning period to calculate RFI. Steers were categorized into high efficient (0.5 SD above the RFI mean; 76). After the feed intake test, steers grazed on sorghum pasture and oat with corn supplementation during summer and autumn and winter, respectively, until achieving the slaughter weight (with back fat thickness 6.35 mm).
SUMMARY. Dataset from Canadian and Uruguayan training populations were joined to analyse improvement of predictability for RFI. Three training populations where defined, URY (only data from Uruguay, 731), CAN (only data from Canada, 1168) and TOTAL (joint dataset, 1899). Genealogical information from the two countries was merged based on the international identification and cross reference list, with the pedigree file resulting in 17289 animals. The demands for livestock products are increasing, and beef production seems not to be an exception.
ABSTRACT. BLUPF90 suite of programs for animal breeding with focus on genomics The BLUPF90 suite is a collection of software for mixed-model computations with focus on breeding and genetics applications. Solving of mixed model equations and variances components estimation are supported for general multiple trait, multiple effect models, with different model design per trait and random correlated effects. Genomic analyses using single-step GBLUP are fully integrated in all programs with efficient optimizations for large scale genetic evaluations.
SUMMARY. Genomic selection provides the opportunity of genetic improvement of difficult-to-measure traits, such as carcass and meat traits. This study investigated the accuracies of genomic predictions of carcass and meat quality traits in Hereford with an initial training population of 747 steers. Hot carcass weights, rib eye areas and subcutaneous, fat depths were recorded in commercial slaughterhouses, as well as, the left pistola cut weight and retail product. Shear force and intramuscular fat content were measured in the Longissumus dorsi.