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Risk factors limiting first service conception rate in dairy cows and their economic impact
OBJECTIVE: We determined the risk factors limiting first service conception (FSC) rate in dairy cows and their economic impact. METHODS: Data were collected from 790 lactations regarding cow parity, peri- and postpartum disorders, body condition score (BCS), reproductive performance, and expenses as...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST)
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6409448/ https://www.ncbi.nlm.nih.gov/pubmed/30208696 http://dx.doi.org/10.5713/ajas.18.0296 |
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author | Kim, Ill Hwa Jeong, Jae Kwan |
author_facet | Kim, Ill Hwa Jeong, Jae Kwan |
author_sort | Kim, Ill Hwa |
collection | PubMed |
description | OBJECTIVE: We determined the risk factors limiting first service conception (FSC) rate in dairy cows and their economic impact. METHODS: Data were collected from 790 lactations regarding cow parity, peri- and postpartum disorders, body condition score (BCS), reproductive performance, and expenses associated with reproductive management (treatment, culling, and others). Initially, we identified the risk factors limiting FSC rate in dairy cows. Various biological and environmental factors, such as herd, cow parity, BCS at 1 month postpartum and first artificial insemination (AI), resumption of cyclicity within 1 month of calving, year, AI season, insemination at detected estrus or timed AI, peri- and postpartum disorders, and calving to first AI interval, were evaluated. Next, we evaluated the economic impact of the success or failure of FSC by comparing the expense associated with reproductive management until conception between cows that did or did not conceive at their first service. RESULTS: Cows with BCS <3.0 had a lower probability of conceiving at first insemination (odds ratio [OR] = 0.64, p<0.05) than cows with BCS ≥3.0. Cows inseminated during summer were less likely to conceive (OR = 0.44, p<0.001) than cows inseminated during spring. Cows with peri- or postpartum disorders were less likely to conceive (OR = 0.55, p<0.001) than cows without disorders. Survival curves generated using MedCalc showed an 81 day extension in the mean interval between calving and conception in cows that failed to conceive over those that did conceive at first insemination. Cows failing conceive required additional expenditure on reproductive treatment ($55.40) and other management ($567.00) than cows that conceived at first insemination. CONCLUSION: Lower BCS, hot weather at first insemination, and peri- and postpartum disorders are risk factors limiting FSC, which result in an economic loss of $622.40 per dairy cow. |
format | Online Article Text |
id | pubmed-6409448 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST) |
record_format | MEDLINE/PubMed |
spelling | pubmed-64094482019-04-01 Risk factors limiting first service conception rate in dairy cows and their economic impact Kim, Ill Hwa Jeong, Jae Kwan Asian-Australas J Anim Sci Article OBJECTIVE: We determined the risk factors limiting first service conception (FSC) rate in dairy cows and their economic impact. METHODS: Data were collected from 790 lactations regarding cow parity, peri- and postpartum disorders, body condition score (BCS), reproductive performance, and expenses associated with reproductive management (treatment, culling, and others). Initially, we identified the risk factors limiting FSC rate in dairy cows. Various biological and environmental factors, such as herd, cow parity, BCS at 1 month postpartum and first artificial insemination (AI), resumption of cyclicity within 1 month of calving, year, AI season, insemination at detected estrus or timed AI, peri- and postpartum disorders, and calving to first AI interval, were evaluated. Next, we evaluated the economic impact of the success or failure of FSC by comparing the expense associated with reproductive management until conception between cows that did or did not conceive at their first service. RESULTS: Cows with BCS <3.0 had a lower probability of conceiving at first insemination (odds ratio [OR] = 0.64, p<0.05) than cows with BCS ≥3.0. Cows inseminated during summer were less likely to conceive (OR = 0.44, p<0.001) than cows inseminated during spring. Cows with peri- or postpartum disorders were less likely to conceive (OR = 0.55, p<0.001) than cows without disorders. Survival curves generated using MedCalc showed an 81 day extension in the mean interval between calving and conception in cows that failed to conceive over those that did conceive at first insemination. Cows failing conceive required additional expenditure on reproductive treatment ($55.40) and other management ($567.00) than cows that conceived at first insemination. CONCLUSION: Lower BCS, hot weather at first insemination, and peri- and postpartum disorders are risk factors limiting FSC, which result in an economic loss of $622.40 per dairy cow. Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST) 2019-04 2018-09-13 /pmc/articles/PMC6409448/ /pubmed/30208696 http://dx.doi.org/10.5713/ajas.18.0296 Text en Copyright © 2019 by Asian-Australasian Journal of Animal Sciences This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Article Kim, Ill Hwa Jeong, Jae Kwan Risk factors limiting first service conception rate in dairy cows and their economic impact |
title | Risk factors limiting first service conception rate in dairy cows and their economic impact |
title_full | Risk factors limiting first service conception rate in dairy cows and their economic impact |
title_fullStr | Risk factors limiting first service conception rate in dairy cows and their economic impact |
title_full_unstemmed | Risk factors limiting first service conception rate in dairy cows and their economic impact |
title_short | Risk factors limiting first service conception rate in dairy cows and their economic impact |
title_sort | risk factors limiting first service conception rate in dairy cows and their economic impact |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6409448/ https://www.ncbi.nlm.nih.gov/pubmed/30208696 http://dx.doi.org/10.5713/ajas.18.0296 |
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