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

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

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/424.55^b) = 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 days^b): 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

^a) Culling due to infertility in cows that failed to conceive at first service: 279/348 (80.2%)
^b) Calving interval in this study

ISSN: 1746-6148