Farm Animals

Cattle Pre-Calving Nutrition and Calving Difficulty

Nutritional management in the weeks before calving directly affects the ease of calving, calf vigour, and cow recovery. Getting pre-calving nutrition right is a key welfare intervention.

Key Facts

Over-conditioned cows (BCS >4.0) have significantly higher rates of dystocia
Under-conditioned cows (BCS <2.5) produce less colostrum and have weaker calves
Selenium and vitamin E deficiency increase rates of retained foetal membranes
Transition cow magnesium requirements increase dramatically in the final weeks
High potassium forages reduce calcium mobilisation, increasing milk fever risk
Targeted supplementation based on forage analysis prevents most nutritional disorders

Welfare Considerations

Calving difficulty (dystocia) causes significant pain and distress to both cow and calf, and is a leading cause of calf mortality and cow welfare problems. Much dystocia is preventable through correct pre-calving nutrition that maintains appropriate body condition and prevents metabolic diseases. Investing in nutritional planning and forage testing is therefore a direct welfare intervention.

What You Can Do

Test forages for mineral content and formulate rations with a nutritionist
Monitor and record body condition scores throughout pregnancy
Use dietary cation-anion balance (DCAB) strategies to prevent milk fever
Supplement selenium and vitamin E according to forage test results
Ensure adequate trough space to prevent feed competition in pre-calving groups