2010 Beef Heifer synchronization protocols Beef Reproduction Task Force Telephone: (614) 873-4683 • www.selectsiresbeef.com
Heat Detect anD timeD a.i. (tai)
Heat Detection 1 Shot PG
Select Synch + CIDR and TAI ®
Heat detect and A.I. day 7 to 10 and TAI all non-responders 72-84 hours after PG with GnRH at TAI.
PG
GnRH
0
5
GnRH
12
PG A.I.
Heat detect and A.I. Treatment day
CIDR®
72-84hrs
0
7-Day CIDR - PG ®
7
PG
Heat detect and A.I.
Treatment day CIDR®
MGA - PG and TAI ®
0
7
Heat detect and A.I. day 33 to 36 and TAI all non-responders 72-84 hours after PG with GnRH at TAI.
13 Heat detect and A.I.
PG
Treatment day
MGA
MGA - PG ®
... 19d ...
1
PG
MGA
33
39
Heat detect and A.I.
Treatment day
FixeD-time a.i. (tai)* Co-Synch + CIDR
... 16d ...
14 Treatment day
Perform TAI at 54 ± 2 hours after PG with GnRH at TAI. Heat Detection
A.I.
1 Shot PG ® 7-Day CIDR - PG ® MGA - PG
54±2hrs
7
9
Treatment day
Heat Detection and tai Select Synch + CIDR
MGA - PG ®
14
®
®
MGA - PG
®
14-Day CIDR - PG
A.I.
72±2hrs
cost
labor
Low Medium Low
High Medium Low/Medium
cost
labor
High
Medium
Medium
Medium
Medium
Medium
33
36
cost
labor
High
Medium
Medium
Medium
Medium
Medium
(TAI non-responders 70-74 hours after PG)
Fixed-time a.i. (tai) CO-Synch + CIDR
®
(TAI 54 ± 2 hours after PG with GnRH at TAI)
Treatment day
®
MGA - PG
(TAI 72 ± 2 hours after PG with GnRH at TAI)
14-Day CIDR - PG ®
Perform TAI at 66 ± 2 hours after PG with GnRH at TAI. PG
0
30
®
14-Day CIDR - PG
GnRH A.I. 66±2hrs
... 16d ...
14 Treatment day
33
Heat detect and A.I.
(TAI non-responders 72-84 hours after PG)
PG ... 19d ...
1
70-74hrs
30
(TAI non-responders 72-84 hours after PG)
GnRH
Perform TAI at 72 ± 2 hours after PG with GnRH at TAI. MGA
A.I.
comparison oF protocols For BeeF HeiFers
PG
0
GnRH
Heat detect and A.I. day 30 to 33 and TAI all non-responders 72 hours after PG with GnRH at TAI. PG 0
CIDR®
36
®
CIDR®
GnRH
A.I.
Heat detect and A.I.
14-Day CIDR - PG and TAI
®
GnRH
33
Treatment day
14
GnRH
72-84hrs
14
... 19d ...
1
CIDR®
10
33
(TAI 66 ± 2 hours after PG with GnRH at TAI)
* The times listed for “Fixed-time A.I.” should be considered as the approximate average time of insemination. This should be based on the number of cows to inseminate, labor, and facilities. GnRH
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®
Cystorelin , Factrel , Fertagyl , OvaCyst PG
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estroPLANTM, Estrumate , In-Synch , Lutalyse , ProstaMate
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