Management of Bulls, An Issue of Veterinary Clinics of North America: Food Animal Practice

1st Edition, Volume 40-1 - January 24, 2024
Editors: Lee Jones, Joseph C. Dalton
Language: English
Hardback ISBN:
9 7 8 - 0 - 4 4 3 - 1 3 0 2 1 - 2
eBook ISBN:
9 7 8 - 0 - 4 4 3 - 1 3 0 2 2 - 9

In this issue of Veterinary Clinics of North America: Food Animal Practice, guest editors Drs. Lee Jones and Joseph C. Dalton bring their considerable expertise to the topic… Read more

Management of Bulls, An Issue of Veterinary Clinics of North America: Food Animal Practice

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In this issue of Veterinary Clinics of North America: Food Animal Practice, guest editors Drs. Lee Jones and Joseph C. Dalton bring their considerable expertise to the topic of Management of Bulls. Top experts in the field offer current discussions of assessing the reproductive potential of bulls, diagnosing disease or causes of infertility, and determining appropriate course of treatment or prognosis for recovery of injured bulls. This issue also provides up-to-date information regarding the contribution of sires to success or failure of reproductive programs in beef and dairy herds, and foundational material for success with AI (semen storage, handling, and site of deposition).

Cover image
Title page
Table of Contents
Copyright
Contributors
Forthcoming Issues
Preface
Nutrition and Sexual Development in Bulls
Key points
Introduction
The metabolic sensor
Sexual development
Nutrition during the infantile and prepubertal periods (birth to 24 weeks)
Nutrition after the prepubertal period
Summary
Disclosure
Clinics care points
Physical Evaluation of Beef Bulls
Key points
Introduction
Feet and legs
Scrotum
Sheath
Muscling
Head
Hair coat
Tail
Crest or hump
The Bull Breeding Soundness Examination and Its Application in the Production Setting
Key points
Introduction
Challenges that affect consistency or validity of results
Scheduling the procedure in the context of breeding season management
Review of the breeding soundness examination
Utilization in the production setting
Summary
Disclosure
Field Morphology and Interpretation
Key points
Introduction
Summary
Clinics care points
Ancillary Methods for Semen Evaluation
Key points
Introduction
Feulgen staining
Spermac stain
Hypo-osmotic swelling testing
Differential interference contrast microscopy
Computer-assisted sperm analysis
Flow cytometry
Electron microscopy
Clinics care points
Disclosure
Medical and Surgical Management of Conditions of the Penis and Prepuce
Key points
Introduction
Examination of the penis and prepuce
Abnormalities of the penis and prepuce
Clinics care points
Abnormalities of the Scrotum and Testes
Key points
Introduction
Examination of the scrotum and its contents
Conditions of the scrotum
Clinics care points
Bovine Lameness from the Ground up
Key points
Evaluation
Conditions of the hoof
Conditions of the distal limb
Conditions of the proximal limb
Long bone fractures
Hoof trimming for beef cattle
Summary
Clinics care points
Disclosure
Sexually Transmitted Diseases of Bulls
Key points
Introduction
Trichomoniasis
Campylobacteriosis
Diagnosis of campylobacteriosis
Control of campylobacteriosis
Prevalence of Campylobacter fetus subsp venerealis
Other potential sexually transmitted disease of cattle
Prevention and control of sexually transmitted disease
Clinics care points
Impact of the Sire on Pregnancy Loss
Key points
Introduction
Paternal contribution to pregnancy loss
Placentation
Sire field fertility
Summary
Disclosure
Funding
Impact of Sire on Embryo Development and Pregnancy
Key points
Introduction
Contributions of the sire to the early embryo
Contribution of the sire to placenta function
Sire fertility classification
How to pick a sire for in vitro or in vivo embryo production and transfer programs?
Summary
Funding
Conflict of interest
Implementing Fixed-Time Artificial Insemination Programs in Beef Herds
Key points
Introduction
Adoption rates of artificial insemination and fixed-time artificial insemination in the United States
Impacts of estrous synchronization on cow-calf productivity and profitability
Factors affecting pregnancy success of fixed-time artificial insemination
Current fixed-time artificial insemination protocols for beef females
Considerations for implementing fixed-time artificial insemination in beef cow-calf operations
Summary
Clinics care points
Disclosure
Frozen Bovine Semen Storage, Semen Handling, and Site of Deposition
Key points
Introduction
Semen storage
Semen handling
Site of semen deposition
Summary
Disclosure
Considerations for Using Natural Service with Estrous Synchronization Programs
Key points
Introduction
The breeding soundness examination
Limitations to natural service in a synchronization program
Selection of protocols
Summary
Clinics care points
Disclsoure
Funding
Managing Beef Bulls During the Off-Season
Key points
Introduction
Introducing bulls to the bull pasture: social dominance
Environment
Nutrition
Herd health
Biosecurity and testing
Bull-to-cow ratio (stocking rate)
Summary
Genomics and Dairy Bull Fertility
Key points
Reproductive efficiency in dairy cattle
Dairy Bull Fertility
Evaluating Dairy Bull Fertility
Sire Conception Rate
Genetic Factors Affect Dairy Bull Fertility
Major Mutations Affecting Dairy Bull Fertility
Genomic Prediction of Dairy Bull Fertility
Inbreeding, Homozygosity, and Dairy Bull Fertility
Other Omics Technologies
Summary
Disclosure