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A Prospective Study of the Prevalence and Predictive Risk Factors of Repeat Breeder Syndrome in Dairy Cattle in the North of Spain.
Animals (Basel)
January 2025
Unit of Reproduction and Obstetrics, Department of Animal Pathology, Faculty of Veterinary Medicine, Universidade de Santiago de Compostela (USC), 27002 Lugo, Spain.
This study examined the prevalence and risk factors of repeat breeder syndrome (RB) in 2370 dairy cows in northern Spain. Data collected included the prevalence of postpartum pathologies, metabolic markers, and productive and reproductive parameters. The overall RB prevalence was 21.
View Article and Find Full Text PDFThe Relationship of Th/Th Cytokine Polarization at Parturition in Cows and SOCS3 Level With Some Postpartum Diseases.
Vet Med Sci
January 2025
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Fırat University, Elazığ, Turkey.
Th/Th polarisation and suppressor of cytokine signalling-3 (SOCS3) are important indicators of the humoral and cellular immune system activity in cows. The aim of this study was to determine the correlation of postpartum diseases with the levels of Th/Th polarisation and SOCS3 at the time of parturition. The study examined 180 cows (90 with normal parturition [NP] and 90 with dystocia [D]).
View Article and Find Full Text PDFSire mating advice framework for cattle to recommend which beef bull to mate to individual dairy females.
J Dairy Sci
December 2024
Irish Cattle Breeding Federation, Carrigrohane, Ballincollig, Co. Cork, P31 D452, Ireland.
A decision support tool or system is a computerized information system used to support decision-making in a business; one central component to profitable dairy cattle production systems is the appropriate mating of bulls and females. While tools have been described to aid mating decisions between dairy bulls and dairy females, or between beef bulls and beef females, there is a void of such tools that recommend which beef bull to mate to individual dairy females. The objective of the present study was to develop and validate a framework, founded on linear programming, to aid herd-level mating decisions where the bull-female mating is tailored based on complementarity and compatibility of both mates; consideration in the process was given to the genetic merit of both mates for a series of traits as well as the life history of the female herself.
View Article and Find Full Text PDFQuantifying the impact of frequent diseases and syndromes on calf health using the opinions of producers and veterinarians: Towards dairy calf disability weights.
J Dairy Sci
December 2024
Département des sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, QC, J2S 2M2, Canada.
Article Synopsis
- The study aimed to quantify the impact and disability weight (DW) of common diseases in pre-weaned dairy calves, using insights from producers and veterinarians.
- The researchers conducted a survey involving 39 dairy producers and 52 veterinarians to gather opinions on the health effects of various diseases, with a focus on their severity and impact on calf health.
- Results indicated significant differences in perceived impact across diseases, with fractures, arthritis, and congenital defects being considered as having the highest average impacts on calf health.
Assessment of genome complementarity in three beef-on-dairy crossbreds reveals sire-specific effects on production traits with comparable rates of genomic inbreeding reduction.
BMC Genomics
November 2024
Animal GenoPhenomics, 1725 Posieux, Agroscope, Switzerland.
Article Synopsis
- Crossbreeding beef bulls with dairy cows can enhance meat yield and calf fitness, but may affect local adaptation and increase chances of difficult births due to larger calf sizes.
- The study assessed genomic complementarity between different beef breeds and Brown Swiss dairy cows by analyzing inbreeding and identifying selection-driven genes.
- Results showed that crossbred calves had reduced inbreeding compared to BSW cows and identified 585 genes under selection, some of which correlated with lower carcass weight and protein mass in the crossbred offspring.
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