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Mostrando ítems 581-590 de 617
Designing an early selection morphological traits index for reproductive efficiency in Pura Raza Española mares
(Oxford Academic, 2024)
The low rate of reproductive efficiency in horses may be linked to the equine industry’s practice of maintaining breeding stock that stands out for its athletic or morphological performance but exhibits poor reproductive ...
Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
(Oxford Academic, 2021)
Fertility is a key factor in the economic success of horse farms. However, it has received little attention due to the difficulty of measuring fertility objectively. Since its studbook creation (1912), the Pura Raza Española ...
Prediction of adult conformation traits from shape characteristics of Pura Raza Español foals
(Elsevier, 2021)
Horse conformation has been proposed as an indirect indicator of performance, since their genetic correlations are often positive and high. In Pura Raza Español (PRE) horses, the selection of conformation traits more related ...
Analysis of Endangered Andalusian Black Cattle (Negra Andaluza) Reveals Genetic Reservoir for Bovine Black Trunk
(MDPI, 2024)
This comprehensive study on the Andalusian Black cattle breed reveals a substantial population decline, with the average herd size decreasing significantly from 305.54 to 88.28 animals per herd. This decline is primarily ...
Early genetic selection of Spanish Trotter Horses by new precocity criteria
(Taylor & Francis, 2024)
National trotting races held in Spain between 1990–2022 were used to estimate genetic para-meters for 5 precocity criteria: age at first ranked race (AFR), age when the animal reached 50% of ranked races (A50%), age when ...
Estimation of the Genetic Components of (Co)variance and Preliminary Genome-Wide Association Study for Reproductive Efficiency in Retinta Beef Cattle
(MDPI, 2023)
In this study, we analyzed the variation of reproductive efficiency, estimated as the deviation between the optimal and real parity number of females at each stage of the cow’s life, in 12,554 cows belonging to the Retinta ...
A genomic biomarker for the rapid identification of the rob(1;29) translocation in beef cattle breeds
(Nature, 2024)
Robertsonian translocations, specifically rob(1;29) translocation, have reportedly been the most
prevalent chromosomal abnormalities in cattle, affecting various breeds and leading to a decrease in
fertility and reproductive ...
Use of Principal Component Analysis to Combine Genetic Merit for Heat Stress and for Fat and Protein Yield in Spanish Autochthonous Dairy Goat Breeds
(MDPI, 2021)
We studied the effect of the Temperature Humidity Index (THI) (i.e., the average of temperature and relative humidity registered at meteorological stations) closest to the farms taken during the test day (TD), for total ...
Genetic Parameters of Somatic Cell Score in Florida Goats Using Single and Multiple Traits Models
(MDPI, 2022)
A total of 1,031,143 records of daily dairy control test of Spanish Florida goats were used for this study. The database was edited, and only the records of the first three lactations were kept. The final database contained ...
Selection Criteria for Improving Fertility in Spanish Goat Breeds: Estimation of Genetic Parameters and Designing Selection Indices for Optimal Genetic Responses
(MDPI, 2021)
The aim of this study was to estimate genetic parameters for several female fertility criteria and to choose the most suitable selection index in Spanish Florida and Payoya goat breeds. In this study, we analyzed as fertility ...