Synchronisation

Posted in Category(ies):  TipsDairy

 

 

Day

Simple Heifer

Heifer Fixed Time

Dairy Cow

 

Beef Cow

 

Day

Action

Day

Action

Day

Action

Day

 

Monday

0

Observe Heats 5 Times per Day

A.I. Heifers with Observed heat

(AM/PM rule)

0

PRID/CIRD

0

GnRH + PRID/CIRD

0

GnRH + PRID/CIRD

Tuesday

1

1

 

1

 

1

 

Wednesday

2

2

 

2

 

2

 

Thursday

3

3

 

3

 

3

 

Friday

4

4

 

4

 

4

 

Saturday

5

5

PG & Prid Out

5

 

5

 

Sunday

6

6

 

6

 

6

 

Monday

7

PG heifers not Bred

7

 

7

PG 10 am & Prid Out

7

PG + eCG10 am & Prid Out

Tuesday

8

A.I. Heifers with Observed heat

(AM/PM rule)

8

GnRH + AI

8

 

8

 

Wednesday

9

   

9

GnRH 4pm

9

 

Thursday

10

   

10

AI 10 am

10

GnRH + AI 10 am

Friday

11

           

Saturday

12

           

Sunday

13

           

Monday

14

             

Tuesday

15

             

Wednesday

16

             

Thursday

17

PG heifers not Bred

           

Friday

18

             

Saturday

19

             

Sunday

20

Fixed Time A.I. 72 hrs

           

Monday

21

Fixed Time A.I. 96 hrs

           

PG = Prostaglandin injection = Prostaglandin such as Enzaprost, Estrumate or Lutalyse

PRID/CIDR = progesterone intravaginal device

GnRD = injection of Ovarelin, Acegon

eCG = Syncrostim or Folligon PMSG

All are POM prescription only medicines

  • Heifers must be cycling to respond to prostaglandin synchronisation regimes.
  • Ensure that heifers are well grown (>320 kg BW) and in good body condition (>3.25) to maximise likelihood that they have commenced cycling prior to mating start date

Why use synchronisation?

  • Labour efficiency
  • Potential improved reproductive performance
  • Improved calving pattern
  • Grazing Management

 

 

Posted on Tuesday, 17 April 2018  |  By Progressive Genetics
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