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Evaluation of the Accuracy and Performance of Two Commercial Pregnancy-Associated Glycoprotein Tests for Early Pregnancy Detection in Cows.
Vet Med Sci
March 2025
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Siirt University, Siirt, Turkey.
The aim of this study was to determine and compare the diagnostic accuracies of two commercial pregnancy-associated glycoprotein tests, Alertys OnFarm Pregnancy Test (AOPT) and Alertys Milk Pregnancy Test (AMPT), for early pregnancy diagnosis in dairy cattle. Holstein cows (n = 124) were used in the study. Whole blood samples were collected from the jugular vein 28 days after fixed-time artificial insemination (FTAI).
View Article and Find Full Text PDFDeterminants of fertility in timed artificial insemination programs in beef cattle: predictive ability and risk factors from almost 2 million data points.
Animal
December 2024
Alta Genetics Brasil Ltda., Uberaba 38055-010, Brazil.
Timed artificial insemination (TAI) is a technology widely used in cattle production based on controlling ovarian follicular growth. This study analyzed a large database aiming to determine the influence of several intrinsic and extrinsic female factors, as well as their interactions to determine risk factors and produce prediction ability in beef cattle. A total of 1 832 999 TAIs conducted on 2 002 farms across South American countries were considered for the analysis, including 15 main fixed effects or interactions in the statistical model, in addition to five random effects.
View Article and Find Full Text PDFThe Global Burden of Emerging and Re-Emerging Orbiviruses in Livestock: An Emphasis on Bluetongue Virus and Epizootic Hemorrhagic Disease Virus.
Viruses
December 2024
School of Veterinary Medicine, Murdoch University, Perth, WA 6150, Australia.
Bluetongue virus (BTV) and epizootic hemorrhagic disease virus (EHDV) are vector-borne orbiviruses that pose an emerging threat to livestock, including cattle and sheep. This review summarizes the global distribution, genetic diversity, and key factors driving their spread along with the existing knowledge gaps and recommendations to mitigate their impact. Both viruses cause hemorrhagic disease in susceptible ruminants and are commonly reported in tropical and subtropical regions including North America, Asia, Africa, Oceania, and some parts of Europe.
View Article and Find Full Text PDFChitosan-Based Semen Extenders: An Approach to Antibiotic-Free Artificial Insemination in Rabbit.
Antibiotics (Basel)
January 2025
Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, C/Camino de Vera S/N, 46022 Valencia, Spain.
: The use of antibiotics in livestock contributes to antimicrobial resistance, highlighting the need for alternative solutions. Among these, chelating agents, like ethylenediaminetetraacetic acid (EDTA) and Chitosan, have shown potential in reducing bacterial contamination in seminal doses used in artificial insemination (AI), while preserving sperm quality. The objective of this study was to evaluate the potential use of EDTA and Chitosan as alternatives to antibiotics for the liquid storage of rabbit seminal AI doses.
View Article and Find Full Text PDFA 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.
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