Beef Heifer Development, An Issue of Veterinary Clinics: Food Animal Practice
Published on 14. November 2013
276 pages
978-0-323-26137-1 (ISBN)
Description
The latest information on heifer development in beef cattle for the food animal practitioner! Topics include rebuilding the US cowherd, physiology and endocrinology of puberty, nutritional development and the target weight debate, long-term reproductive health, effect of prenatal programming on development, economics of development, synchronization of estrus and ovulation, post breeding heifer management, management strategies for adding value to heifers, and more!
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Other editions
Additional editions
David J. Patterson | Michael T. Smith
Beef Heifer Development, An Issue of Veterinary Clinics: Food Animal Practice: Volume 29-3
Volume 29-3
Book
11/2013
Elsevier
€100.50
Shipment within 15-20 days
Content
- Cover image
- Title page
- Table of Contents
- Contributors
- Consulting Editor
- Editors
- Authors
- Forthcoming Issues
- Forthcoming Issues
- Recent Issues
- Preface: Management Considerations in Beef Heifer Development and Puberty
- Rebuilding the US Beef Herd
- Key points
- Introduction
- Current situation
- The US beef industry and reproductive technology
- Developing a plan for expansion
- Physiology and Endocrinology of Puberty in Heifers
- Key points
- Introduction
- Definition of puberty
- Physiological changes in reproductive organs
- Uterine growth
- Ovarian development
- RTS: a subjective assessment of pubertal development
- Endocrine regulation of puberty
- Gonadostat hypothesis
- Hypothalamus
- Pituitary
- Physiologic differences between B indicus and B taurus heifers
- Summary
- Considerations Related to Breed or Biological Type
- Key points
- Introduction
- Crossbreeding
- Selecting replacement heifers
- Commercial replacement heifer selection
- The future and developing technologies
- Summary
- Effect of Prenatal Programming on Heifer Development
- Key points
- Introduction
- Epigenetic modifications
- Impact of early gestational nutrition
- Summary
- Nutritional Development and the Target Weight Debate
- Key points
- Introduction
- Influence of birth weight on heifer development
- Preweaning nutrition
- Early weaning nutrition
- Postweaning nutrition
- Energy intake
- Source of calories
- Fats
- Protein intake
- By-pass or undegradable intake protein
- Excessive protein
- Minerals
- The target weight debate
- Setting the Stage for Long-term Reproductive Health
- Key points
- Introduction
- Disease prevention
- Vaccination program
- Choosing a vaccine
- Further thoughts on vaccines
- Parasite control
- Nutritional management and body condition scoring
- Summary
- Criteria for Selecting Replacements at Weaning, Before Breeding, and After Breeding
- Key points
- Introduction
- Selection of heifers at weaning
- Selection of heifers before breeding
- Selection of heifers after breeding
- Future selection tools and summary
- Effect of Age at Puberty/Conception Date on Cow Longevity
- Key points
- Introduction
- Factors that affect age at puberty
- Influence of puberty on conception date
- Influence of conception date on fertility and longevity
- How conception date can affect fertility and longevity
- Postpartum interval
- Genetic selection
- Summary
- Control of Estrus and Ovulation in Beef Heifers
- Key points
- Introduction
- Estrous synchronization and AI contribute to a total heifer development program
- MGA-based programs
- Development of the 7-day CIDR-PG protocol for heifers
- The multistate CIDR trial
- How do MGA-based and CIDR-based protocols compare?
- How do short-term and long-term CIDR-based protocols compare in synchronizing ovulation before FTAI in beef heifers?
- How do the CIDR Select (CIDR-GnRH-PG) and 14-day CIDR-PG protocols compare on the basis of estrous response, synchrony of estrus, and pregnancy rates resulting from AI during the synchronized period?
- How do the CIDR Select (CIDR-GnRH-PG) and 14-day CIDR-PG protocols compare based on pregnancy rates resulting from FTAI in heifers?
- Comparing reproductive tract scores with FTAI pregnancy rates
- Summary
- Resources for veterinarians
- Application of Sex-selected Semen in Heifer Development and Breeding Programs
- Key points
- Brief history of sexed semen
- How are sperm sexed?
- Recommendations for thawing and insemination of sexed semen
- Pregnancy rates and sexing accuracy
- Costs and normality of calves resulting from using sexed sperm
- Suggested applications of sexed semen
- Future directions
- Postbreeding Heifer Management
- Key points
- Introduction
- Concepts
- Management considerations
- Calving to rebreeding
- Summary
- Raised Replacement Heifers
- Key points
- Introduction
- Conducting an economic cost analysis
- Input numbers used
- Recommended 6 steps for calculating raised replacement heifer costs
- A more generalized approach
- Summary
- Management Strategies for Adding Value to Replacement Beef Heifers
- Key points
- Introduction
- Program rationale
- Program privatization
- Program participation
- Support from veterinarians
- Development of Tier Two
- Program sales
- Show-Me-Select Replacement Heifer Program requirements for 2013
- Sale eligibility requirements for 2013
- Certification for 2013
- Summary
- Incorporating Reproductive Management of Beef Heifers into a Veterinary Practice
- Key points
- Introduction
- Heifer development programs
- Reproductive tract score
- Pelvic measurement
- Adding value to pregnancy diagnosis
- Fetal aging
- Fetal sexing
- Summary
- Index
