Estimation of financial losses associated with abortion in‏ ‏dairy herds using partial ‎budgeting model ‎

Document Type : Research Paper

Authors

1 Ph.D. Graduate in Animal Breeding & Genetics,, Department of Animal Sciences, Faculty of Agriculture, ‎Isfahan University of Technology, Isfahan, Iran‎

2 Associate Professor in Animal Breeding & Genetics,, Department of Animal Sciences, Faculty of Agriculture, Isfahan University of ‎Technology, Isfahan, Iran‎

Abstract

Abortion in dairy cow can be categorized into two types of abortion: Rebreeding (RA, abortion incidence between 60 and 260 d of gestation, without change in lactation number), and new lactation abortion (NLA, abortion incidence after 200 d in gestation which leads to a new lactation). According to this definition, the losses of abortion might be different based on the type of abortion at the herd level. For this purpose, a partial budgeting model was developed to estimate the losses of abortion in 6 Holstein dairy herds located in Isfahan and Chaharmahal-Bakhtiari provinces during 2020. Financial losses due to reduction in productive and reproductive performances, replacement costs and calf loss were considered in this modeling. On average, loss of pregnancy was estimated 27.7 million IRR per case. Although the probability of NLA incidence was much lower than RA abortion (2.3% vs 12.5%), but NLA imposes significant financial losses to farmers (on average 32.4 million IRR vs. 22.0 million IRR per case). In general, decline in fertility was the most crucial factor of losses (63.3%) due to abortion, and decrease in milk yield (22.8%) placed in the second rank. The results obtained in this study can be used by farmers who make the optimal decision to keep or cull the aborted cows in the dairy farms.

Keywords

References

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Iranian Journal of animal Science
Volume 52, Issue 4
February 2022
Pages 261-270

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History

  • Receive Date: 22 June 2021
  • Revise Date: 07 October 2021
  • Accept Date: 03 November 2021

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