Beef Cattle and Timing Delivery of Calves for Sale

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Beef Cattle and Timing Delivery of Calves for Sale

• Jamie Zimmerman
• Emily Winther
• Zach Menne

2
1. Summarize the problem by indicating the
species, what is to be accomplished and if any
specific drugs were to be used.

• Species- Beef Cattle
• Problem- Synchronizing cycling and anestrous
  suckling cows to calve at similar dates.
• Drugs to be used- CIDR implant (progesterone) and
  Lutalyse (PGF2a)

3
Diagram the drug treatment regime (include days
between treatments if appropriate)
4
Table
5
Within the species you are working with, how does
the reproductive state of the animal effect the
ability of the treatment to work? Are there
reproductive states for which the treatment will
not work?

• The protocol will work with slightly prepubescent
  heifers andanestrous cows.  Works on cycling
  females as well.

6
How do you suggest the client determine if the
treatment regime works?

• He will be able to observe standing heat for most
  of the animals. The client can visually heat
  check from days 8-10 to determine estrous
  activity. He can pregnancy check the herd after
  breeding.

7
What specifically will you recommend to the
client about labor needs to implement the cycle
management and manage parturition?

• The amount of labor needed to can be reduced by
  giving the Lutalyse injection on day 7 and
  removing the CIDR at the same time
• This reduces the number of times you must run the
  cattle through a head gate. 
• The amount of labor needed to check heat can be
  reduced by timed breeding 48-54 hours after CIDR
  removal.
• The amount of labor needed to manageparturition
  will decrease dramatically for the due dates of
  all bred synchronized cows compared with natural
  service.
• By using this breeding protocol, the client will
  be able to sell a large number of calves with
  very similar birth dates.