Heifer Rearing - Aug 2015 Updates

Latest figure indicate the cost of rearing a heifer to calve down at 24 months is 1550 euro, with the cost doubling if she doesn’t calf until 36 months.  The 24 month calving heifer won’t start to leave a profit until half way through her 2nd lactation. 
 
(Can we jazz the graph up a bit) 
With Irish farms on average only achieving 4 lactations per cow it is questionable if older calving heifers ever leave a profit.  
 
Key point
Only 55% of heifers are calving down between 22 and 26 months
To ensure a heifer is on track to calve down at 24 months she must reach weight targets at critical times of her development.  These targets are based on the mature weight of your cows and are specific to your herd.  
Key point:
The calve down at 550kg at 24 months a heifer must gain on average 0.7kg everyday.  
A February born heifer from a Holstein herd with cow body weights of 600 kg should be 30% of her mature weight or 180kg in august.  
We are now approaching the end of the summer.
Are your heifers on target?
Weigh your calves now to evaluate how they have done since weaning.
Action Required:
Split heifers into an on-target and light group.  Start feeding the light heifers to ensure they come into the house in November at 240kg.    
 
To use Dairygold target weight for age heifer calculator logon to: http://www.agritrading.ie/Rearing-Replacement-Heifers

Latest figure indicate the cost of rearing a heifer to calve down at 24 months is 1550 euro, with the cost doubling if she doesn’t calf until 36 months.  The 24 month calving heifer won’t start to leave a profit until half way through her 2nd lactation.  

With Irish farms on average only achieving 4 lactations per cow it is questionable if older calving heifers ever leave a profit.

 

Key point: Only 55% of heifers are calving down between 22 and 26 months

 To ensure a heifer is on track to calve down at 24 months she must reach weight targets at critical times of her development.  These targets are based on the mature weight of your cows and are specific to your herd.

 

Key point: The calve down at 550kg at 24 months a heifer must gain on average 0.7kg everyday.  A February born heifer from a Holstein herd with cow body weights of 600 kg should be 30% of her mature weight or 180kg in August.  


We are now approaching the end of the summer.

Are your heifers on target?

Weigh your calves now to evaluate how they have done since weaning.

Action Required:
Split heifers into an on-target and light group.  Start feeding the light heifers to ensure they come into the house in November at 240kg.

   

To use Dairygold target weight for age heifer calculator logon to: 

Heifier Rearing Weight Ready Reckoner

 

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