The following publications cover topics related to Mizzou Repro — Reproductive Management of Beef Cattle. For a complete list of MU Extension publications, visit the main Publications page.
Assisting the Beef Cow at Calving Time
Reviewed
Six to 10 percent of all calves born in beef cow herds in the U.S. die at or soon after birth. About half of those deaths are due to calving difficulty (dystocia). The purpose of this guide is to acquaint cattle producers with calving management principles that will help minimize calf loss in their herds.
Pelvic Measurements and Calving Difficulty
Reviewed
Although researchers agree that birth weight is the most important measurable trait affecting calving difficulty, there is evidence that the size and shape of the pelvis also affect a heifer’s ability to calve.
Sexed Semen for Artificial Insemination: Recommendations and AI Approaches
Revised
Learn about using sexed semen in a planned mating of cattle and how it differs from conventional semen. Heat detection, fixed-time artificial insemination and split-time AI approaches are described in this University of Missouri Extension guide.
Estrus Synchronization Recommendations for Artificial Insemination of Beef Cows
Revised
Learn about Select Synch, 7-Day CO-Synch + CIDR, 7 & 7 Synch, 5-Day CO-Synch + CIDR, PG 6-Day CIDR, and Bos indicus PG 5-Day CIDR estrus synchronization protocols for artificial insemination of beef cows in this University of Missouri Extension guide.
Estrus Synchronization Recommendations for Natural Service Bull Breeding
Revised
Learn about simple synchronization protocols the can be used effectively with natural service bull breeding that capture some benefits of estrus synchronization without the need to adopt an artificial insemination program in this MU Extension guide.
Estrus Synchronization Recommendations for Artificial Insemination of Beef Heifers
Revised
Learn about recommended protocols for artificial insemination of beef heifers using 1-Shot PG, 7-Day CO-Synch + CIDR, 5-Day CO-Synch + CIDR, 14-Day CIDR-PG, and MGA-PG in this University of Missouri Extension guide.
Whole System Management of Reproduction in Beef Cattle
Revised $45
By managing reproduction with a multiyear perspective and taking a whole system approach, beef cattle producers can manage both proactively and reactively to achieve profitable, sustainable reproductive outcomes. Learn more in this comprehensive manual.
Reproductive Anatomy and Physiology of the Bull
Revised
Good reproductive performance of a bull is necessary to obtain a high percent calf crop when natural service is used for breeding. Gain a basic knowledge of the reproductive tract and an understanding of the bull’s reproductive system in this guide.
Determining Reproductive Fertility in Herd Bulls
Revised
An important factor influencing the productivity of a beef cattle operation is the percentage of the calf crop weaned. This is determined by many factors, but certainly one is the number of cows bred during the breeding season.
Care and Maintenance of a Liquid Nitrogen Tank
Revised
Semen is a significant cost in a cattle artificial insemination program. Maintaining a liquid nitrogen tank’s integrity is key to protecting that investment. Learn how to properly care for and maintain a liquid nitrogen tank in this MU Extension guide.
Hair Shedding Scores: A Tool to Select Heat Tolerant Cattle
Revised
Selecting cattle that can cope with heat stress is important for sustainable beef production. Learn about tools for breeding cattle adapted to heat stress and see a photographic guide to a hair-shedding scoring system in this MU Extension guide.
Inbreeding: Its Meaning, Uses and Effects on Farm Animals
Reviewed
Mating schemes of animals are classified as either inbreeding or outbreeding. Mating closely related animals is inbreeding. Outbreeding is mating less closely related animals, but people disagree about where to draw the line. Learn more in this guide.
Guide to Estrus Synchronization Products
Revised
Several protocols and other resources allow beef producers to effectively synchronize estrus and ovulation in the herd. Read this guide for an overview of the function, handling considerations, and proper administration of estrus synchronization products.
Crossbreeding Systems for Small Herds of Beef Cattle
Revised
Crossbreeding in commercial beef cattle production improves efficiency through heterosis and breed complementation.
Calving Season Considerations for Commercial Beef Cattle Operations
New
Managing when cows calve can have significant implications for the profitability of a cow-calf operation. Learn how to manage for a short, defined calving period and thus reduce costs and optimize productivity of the cow herd in this MU Extension guide.
Preparation and Handling of Catheters for Artificial Insemination of Cattle
New
Learn proper semen handling to achieve maximum conception rates with artificial insemination in beef cattle. Reduced conception rates occur if semen is handled improperly before, during or after thawing. See this illustrated MU Extension guide for more.
Determination of Pregnancy Status in Beef Herds
New
Pregnancy examination provides valuable information that enables cow-calf operations to make management decisions that increase profitability and improve long-term reproductive efficiency. Learn about several methods in this MU Extension guide.
Reproductive Management of Bos indicus-Influenced Beef Cattle
New
Bos indicus cattle present challenges with estrus synchronization. Learn about the timing of estrus onset for them, their susceptibility to stress, and considerations and expectations when breeding them in this University of Missouri Extension guide.