economic effects of estrus synchronization and artificial insemination

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Economic Effects of Estrus Synchronization and Artificial Insemination. Dr. Les Anderson Beef Extension Specialist University of Kentucky. Why Not AI?. Fewer than 10% of beef producers currently use estrus synchronization and AI (ESAI). Why? Beef production systems are extensive - PowerPoint PPT Presentation


  • Economic Effects of Estrus Synchronization and Artificial InseminationDr. Les AndersonBeef Extension SpecialistUniversity of Kentucky

  • Why Not AI?Fewer than 10% of beef producers currently use estrus synchronization and AI (ESAI).Why?Beef production systems are extensiveLimited by facilitiesNot important enoughIntimidated?

  • SummaryCost per pregnancy of natural service versus AIShort-term return on investment of ESAILong-term return on investment of ESAI

  • Cost per PregnancyCosts associated with getting a cow pregnant (Sandy Johnson and coworkers, Kansas State University)Factors:Bull costs or service costsBull:cow ratioBull maintenance costsPregnancy rate

  • Factors Affecting Costs of Pregnancy - ESAICost of serviceSemen, technician, labor, etc.Pregnancy rateHerd sizeEstrus synchronization system used

  • Select Synch 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14Day of Treatment

  • SummaryCost per pregnancy varies dramatically even in natural service breeding systemsCost per pregnancy is approximately similar between ESAI and natural service if calculated on an equivalent production basis.

  • Is Estrus Synchronization and AI Profitable?Trial on Western Kentucky FarmCommercial cows351 mature cows and first-calf heifers Two-thirds were subjected to heat synchronization and AI (n = 251) and rest were exposed to a bull (n = 100).All costs were determined.

  • CO-Synch 0 1 2 3 4 5 6 7 8 9 10Day of TreatmentGnRH

  • ComparisonsSynchronizedOverall:85% calved in first 30 days90% calving rateNatural breedingOverall62% calved in the first 30 days81% calving rate

  • AI Partial Budget

  • Long-term Effects of ESAI?TrialApproximately 45 cows/heifers.Charolais/Angus cross cowsTwo-breed rotation; change breeds every 4 years or so.Last ten years average percent calf crop weaned = 74.5%.Average weaning weight = approx. 500 lbs.

  • TrialChange breeding programAI-terminal systemSynchronize all cows and heifers for timed insemination. Inseminate to maternally-oriented breeds (Hereford and Angus). White cows bred to Angus bulls, black cows bred to Hereford bulls. Replacement heifers are kept from AI-inseminated cows.Clean-up with terminal sire. All calves from clean-up bulls are sold.

  • TrialData

    CHAPS and SPA analysisControl data (financial/production records) were collected from 1991-2000Treatment data (financial/production records) were collected 2001-2002

  • Trial

  • SummaryESAI is a profitable enterprise both in the short- and long-termReturns could be greatly increased if producers take advantage of added value of their productKey: Identify your target and breed to hit that target

  • So.Are you interested in becoming a more efficient beef producer?Do you want to make more money?Is it worth the effort?

    The first system developed using GnRH to synchronize cows was the Select Synch system. This system involves injecting cows with GnRH (Fertagyl, Factrel, Cystorelin) and 7 days later giving the cows PG. heat must be detected in cows beginning the day BEFORE PG and should continue until 5 days AFTER PG is given. The GnRH synchronizes heat in all cows EXCEPT those that are on about day 14-16 of the cycle on the day GnRH is given. These cows then come into heat normally 5-7 days later or beginning the day before PG. This system synchronizes about 80-85% of all cows treated.

    This is a great system for postpartum cows but does NOT work well in heifers. It fails in heifers normally because the GnRH does not stimulate the formation of a CL which is necessary for the system to work.Nice to know if system work, but the most important factor is will synchronization and AI make you money. One of the first trials I ran in KY was designed to determine the profitability of heat synchronization and AI in a typical commercial cow-calf operation.

    Read slideSee next slide for explanation.Calving performanceThis trial was conducted on Paul Deatons farm. First year data was collected was the breeding season BEFORE synchronization and AI were implemented. The objective of this project is to determine the short and long term impact of synchronization and AI on profitability of a medium-sized commercial cow operation.

    This slide describes the farming operation before the new breeding system was implemented.

    Read slide.The main change was the breeding program. All cows and heifers were time-inseminated using the CO-Synch system. Whiteish cows bred to Angus sire, Black cows bred to Hereford sire. All cows exposed to Charolais bull after insemination. All calves from clean-up bull are sold.Data obtained using CHAPS and SPA analysisRead slide.

    Increase in NET PROFIT was $5000! About $100 per cow!

    Thats great. But even with a $100 bill on every cow, many producers in KY will not synchronize and AI because most have off-farm jobs, etc. What can these beef producers do?Read slide


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