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Target weights for replacement heifers


Lower survival rates to third lactation and reduced milk yields are the consequences of failing to achieve the target weight for age when rearing replacement heifers. The maintenance sub index determines the appropriate target weight. Dairy Specialist George Ramsbottom outlines the calculations

The maintenance sub index determines the appropriate target weight. Most dairy replacements have a maintenance sub index of between €0 and €20.

The accompanying video clips detail how to calculate the appropriate target 1st October weights for spring born in-calf and weanling heifers respectively while a third summarises the target weights for heifers of different maintenance sub index.

Calculating heifer target weights

Weanling target weights

Summary target weights

Finally the Replacement heifer target weights spreadsheet used in the videos enbables you to calculate the target 1st October weights for your own replacement heifers.  
Replacement heifer target weight spreadsheet