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Table 8 Additional expenses for management procedures in cows that failed to conceive at their first AI, incurred due to a larger number of days open

From: Success rate of artificial insemination, reproductive performance and economic impact of failure of first service insemination: a retrospective study

Item Additional costs per cow/day in cows that did not conceive by first AI Additional costs in cows conceived by second and third AI
Replacement Difference between the value of cull cows (30000) and replacement heifers (cows) (50000)*
Cost of replacement per cow/day
=(20000*80.2%a/424.55b) = 37.8ETB
Mean extra days of calving to conception * Cost of replacement per cow/day
= 45.04 days*37.8ETB = 1702.5 ETB
Nutrition ` Cost of nutrition per cow/d: 140ETB Extra days of calving to conception * Cost of nutrition per cow/d
=45.05 days*140 ETB = 6370ETB
Calf price Calf price per cow/d: (2500ETB/424.55 daysb): 5.9ETB Extra days of calving to conception * Calf price per cow/d
=45.05 days*5.9ETB = 265.8ETB
Labor Labor cost per cow/d: 50ETB Extra days of calving to conception * Labor cost per cow/d = 45.05 days * 50ETB = 2252.5ETB
Milk loss Milk lost per cow/d: (12Litter*20ETB) = 240ETB Extra days of calving to conception * Milk lost per cow/d
= 45.05 days*240ETB = 10812ETB
Total 473.7ETB 21,402.8ETB
  1. a) Culling due to infertility in cows that failed to conceive at first service: 279/348 (80.2%)
  2. b) Calving interval in this study