🎤 Oral
Genetics and Breeding
2022
GB-02
The Genetic Architecture Of Susceptibility To Claw Horn Disruption Lesions In Holstein Cows
Matthew Barden et al.
Georgios Oikonomou1. University of Liverpool, Liverpool, United Kingdom
Objectives: Lameness is the most serious welfare prob- lem facing the modern dairy industry. The lesions associated with the greatest impact on animal welfare, and those which incur the greatest financial costs
🎤 Oral
Genetics and Breeding
2022
GB-03
Aging Increases Inflammatory Response In Dairy Cattle
Gilles Foucras et al.
Boyer Des Roches4, Dorothée Ledoux4, Valérie Gelin3, Christophe Richard3, Hélène Kiefer3, Hélène Jammes3. ENVT, Toulouse, France
Objectives: Old cows are reputed more sensitive to bacte- rial infections, developping more severe mastitis than youngest ones. However the biological basis of these observations are not known. Risk factors inc
🎤 Oral
Genetics and Breeding
2022
GB-04
Impact Of Host Genetics On Resistance Of Bovine Monocyte- Derived Macrophages To Mycobacterium Avium Subsp. Paratuberculosis Infection
Maria Canive et al.
NEIKER, Derio, Spain. The application of animal genetics in breeding programs is currently one of the important motors for efficient livestock production, not only to increase performance and productivity but also to ensure the resilience and health
🎤 Oral
Genetics and Breeding
2022
GB-05
Inherited Zinc Deficiency-Like Syndrome In Holstein Cattle Due To A Loss-Of-Function Mutation Of Il17Ra- Transmembrane Protein
Sickinger Marlene et al.
Lühken Gesine1. Justus-Liebig-University Giessen, Giessen, Germany
Objectives: Skin lesions and dermatoses in cattle are of- ten associated with infections due to bacteria, fungi or envi- ronmental risk factors. Dermatoses with genetic etiology have also been described. Among
🎤 Oral
Genetics and Breeding
2022
GB-06
Temperature-Humidity Effect On Rumination Time And Activity In Holstein And Crossbred Holstein X Jersey Cows
Roberto Kappes et al.
Universidade do Estado de Santa Catarina, Lages, Brazil. Table 1 – Mean values adjusted to the model ± standard deviation fo for rumination time and activity unit. Activity THI classes H F1 R1 Safe 5
Objective: We aimed to compare temperature-humid- ity effect on rumination time and activity in different genetic groups of cows: Holstein, F1 Holstein x Jersey and R1 3/4Hol- stein x Jersey. Material and metho
🎤 Oral
Genetics and Breeding
2022
GB-07
Conformation Traits And Characteristics Of Somatic Cells Counting In Holstein Cattle In Brazil - A Multivariate Approach
Angelica Scheid et al.
Universidade do Estado de Santa Catarina, Lages, Brazil.
Objectives: Identify the linear type traits which together affect the somatic cell count in Holstein cattle in Brazil. Material and methods: We used recorded data from ap- proximately 45,000 animals of the Hols
🎤 Oral
Genetics and Breeding
2022
GB-08
Dry Matter Intake, Body Condition Score And, Beta- Hydroxybutyrate Of Holstein And Crossbred Holstein X Simmental Cows During The Transition Period
Deise Knob et al.
Neto1. Universidade do Estado de Santa Catarina, Lages, Brazil
Objectives: We aimed at a comparison between purebred Holstein and crossbred Holstein x Simmental cows for dry matter intake (DMI), body condition score (BCS), body weight (BW) and β-hydroxybutyrate (BHB) durin
🎤 Oral
Genetics and Breeding
2022
GB-09
Milk Yield And Milk Composition During The First Three Weeks Of The Postpartum Period Of Holstein And Crossbred Holstein X Simmental Cows
Deise Knob et al.
da Vinci, Indaial, Brazil.
Objectives: We aimed at comparing purebred Holstein and crossbred Holstein x Simmental cows for milk yield (MY) and composition during the first three weeks after calving. Materials and Methods: The research wa
🎤 Oral
Genetics and Breeding
2022
GB-10
Genetic Analysis Of Juvenile Spastic Paresis In Romagnola Cattle
Joana G. P. Jacinto et al.
Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell’Emilia (Bologna), Italy
Objectives: Bovine spastic paresis (BSP) is a juvenile-on- set neuromuscular disorder that affects males and females occurring in various breeds of cattle. Clinically BSP is charac- terized by overextension of
🎤 Oral
Genetics and Breeding
2022
GB-11
Genetic Parameters Of Sole Lesion Recovery In Holstein Cows
Matthew Barden et al.
University of Liverpool, Neston, United Kingdom
Objectives: Lameness in dairy cattle is primarily caused by foot lesions (Murray et al., 1996). Two of the most prevalent foot lesions are sole hemorrhage and sole ulcers (Cramer et al., 2008). It is thought th
🎤 Oral
Genetics and Breeding
2022
GB-12
Novel Insights Into The Genetics Of Schistosoma Reflexum In Holstein Cattle
Joana Jacinto et al.
Cord Drögemüller2. Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Italy
Objectives: Schistosoma reflexum (SR) is a lethal con- genital syndrome in cattle characterized by U-shaped dorsal retroflexion of the spine and eventration of the viscera. A re- cessive mode of inheritance has
🎤 Oral
Genetics and Breeding
2022
GB-13
Analysis Of Meat Yield Control At The Censyra Test Station During The Last 13 Years
Andrés Domingo Montes et al.
CENSYRA, Badajoz, Spain. CENSYRA (Animal Selection and Reproduction Center) aims towards conservation, improvement and development of livestock breeds. CENSYRA collaborates with breeders' asso- ciations, which are recognized by the official authoriti
🎤 Oral
Genetics and Breeding
2022
GB-14
Different Temperature-Humidity Indexes On Milk Yield And Composition; Somatic Cells Score And Stability To Alcohol Test In Grazing Holstein And Crossbred Holstein X Jersey Cows
Bruna Mendes et al.
Universidade do Estado de Santa Catarina, Lages, Brazil.
Objective: We aimed to compare genetic group and tem- perature-humidity index classes for milk yield, composition, somatic cells score and stability to the alcohol test. Material and methods: We executed the st
🎤 Oral
Genetics and Breeding
2022
GB-15
Relationship Between Longevity, Milk Yield And Somatic Cell Count In Holstein Cattle In Brazil - A Multivariate Approach
Angelica Scheid et al.
Universidade do Estado de Santa Catarina, Lages, Brazil.
Objective: To determine the joint relationship between milk yield, longevity and somatic cell count in Holstein cattle in Brazil. Material and methods: Data from approximately 45,000 Holstein animals collected
🎤 Oral
Genetics and Breeding
2022
GB-16
Comparison Of Bull Semen Motility Using A Portable Semen Analysis Device And Computer-Assisted Sperm Analyser
Kate Mitchell et al.
University of Melbourne/Scottsdale Veterinary Services, Scottsdale Tasmania, Australia
Objective: Bull breeding soundness evaluations (BBSEs) in Australia include a physical exam, scrotal circumference measurement, crush-side semen motility evaluation and of- ten remote assessment of sperm morpho