Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors
Aflatoxin M1 contamination of milk in Pakistan, like many developing countries, is poorly understood. The present study was therefore conducted to determine AFM1 contamination of milk and its contributory factors in Pakistan. We sampled milk and feedstuffs from 450 peri-urban dairy farms in seven ma...
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doaj-44b1156a04df4cb0a1fecafdb5e66c7b2020-11-25T02:29:35ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2020-03-011110.3389/fmicb.2020.00159495092Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory FactorsAgha Waqar Yunus0Aman Ullah1Johanna Frida Lindahl2Zahid Anwar3Atta Ullah4Sharjeel Saif5Mubarak Ali6Aamer Bin Zahur7Hamid Irshad8Shahbaz Javaid9Nida Imtiaz10Umer Farooq11Aitzaz Ahsan12Zahida Fatima13Avais Ahmed Hashmi14Babar Hilal Ahmad Abbasi15Zubair Bari16Ihsan Ullah Khan17Mohammed Nawaz Mohammed Ibrahim18Animal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanInternational Livestock Research Institute, Hanoi, VietnamDepartment of Animal Genomics and Biotechnology, PARC Institute of Advanced Studies in Agriculture, Islamabad, PakistanDepartment of Animal Genomics and Biotechnology, PARC Institute of Advanced Studies in Agriculture, Islamabad, PakistanDepartment of Agricultural Sciences, Faculty of Sciences, Allama Iqbal Open University, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanDepartment of Animal Genomics and Biotechnology, PARC Institute of Advanced Studies in Agriculture, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanAnimal Sciences Institute, PARC National Agricultural Research Centre, Islamabad, PakistanLivestock and Dairy Development Department, Quetta, PakistanCenter for Advanced Studies in Vaccinology and Biotechnology, University of Balochistan, Quetta, PakistanLivestock and Dairy Development Department, Lahore, PakistanLivestock and Dairy Development Department, Peshawar, PakistanInternational Livestock Research Institute (ILRI), Islamabad, PakistanAflatoxin M1 contamination of milk in Pakistan, like many developing countries, is poorly understood. The present study was therefore conducted to determine AFM1 contamination of milk and its contributory factors in Pakistan. We sampled milk and feedstuffs from 450 peri-urban dairy farms in seven major cities following a cross-sectional study design. Analysis of milk using ELISA revealed high contamination with an overall average of 3164.5 ng of AFM1/L, and significant differences (p < 0.001) between cities. The milk sampled from Gilgit, in northern hilly areas, had an average AFM1 level of 92.5 ng/L. Milk from other cities had 3529.7 ng/L average contamination, with only 5.7% samples qualifying the maximum tolerable limit of 500 ng of AFM1/L. Heavy mean aflatoxin contamination was found in bakery waste (724.6 μg/kg), and cottonseed cake (600.8 μg/kg). Rest of the other feedstuffs had moderate to low mean aflatoxin contamination, ranging from 66.0 μg/kg in maize stover to 3.4 μg/kg in wheat bran. The mean aflatoxin level in commercial dairy concentrates was 32.7 µg/kg. About 80% of the total aflatoxin intake of dairy animals was contributed by cottonseed cake alone due to its high aflatoxin contamination and proportion in dairy rations. On-farm storage time of oilseed cakes varied (p < 0.01) in different cities but was not associated with aflatoxin contamination. The exceptionally high AFM1 contamination suggests that milk from peri-urban dairy farms is a serious public health threat in Pakistan. This situation can be mitigated by reducing aflatoxin contamination in cottonseed cake and promoting the use of commercial concentrates and other feedstuffs with low contamination.https://www.frontiersin.org/article/10.3389/fmicb.2020.00159/fullaflatoxincottonseeddairyfeedmilk |
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DOAJ |
language |
English |
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Article |
sources |
DOAJ |
author |
Agha Waqar Yunus Aman Ullah Johanna Frida Lindahl Zahid Anwar Atta Ullah Sharjeel Saif Mubarak Ali Aamer Bin Zahur Hamid Irshad Shahbaz Javaid Nida Imtiaz Umer Farooq Aitzaz Ahsan Zahida Fatima Avais Ahmed Hashmi Babar Hilal Ahmad Abbasi Zubair Bari Ihsan Ullah Khan Mohammed Nawaz Mohammed Ibrahim |
spellingShingle |
Agha Waqar Yunus Aman Ullah Johanna Frida Lindahl Zahid Anwar Atta Ullah Sharjeel Saif Mubarak Ali Aamer Bin Zahur Hamid Irshad Shahbaz Javaid Nida Imtiaz Umer Farooq Aitzaz Ahsan Zahida Fatima Avais Ahmed Hashmi Babar Hilal Ahmad Abbasi Zubair Bari Ihsan Ullah Khan Mohammed Nawaz Mohammed Ibrahim Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors Frontiers in Microbiology aflatoxin cottonseed dairy feed milk |
author_facet |
Agha Waqar Yunus Aman Ullah Johanna Frida Lindahl Zahid Anwar Atta Ullah Sharjeel Saif Mubarak Ali Aamer Bin Zahur Hamid Irshad Shahbaz Javaid Nida Imtiaz Umer Farooq Aitzaz Ahsan Zahida Fatima Avais Ahmed Hashmi Babar Hilal Ahmad Abbasi Zubair Bari Ihsan Ullah Khan Mohammed Nawaz Mohammed Ibrahim |
author_sort |
Agha Waqar Yunus |
title |
Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors |
title_short |
Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors |
title_full |
Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors |
title_fullStr |
Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors |
title_full_unstemmed |
Aflatoxin Contamination of Milk Produced in Peri-urban Farms of Pakistan: Prevalence and Contributory Factors |
title_sort |
aflatoxin contamination of milk produced in peri-urban farms of pakistan: prevalence and contributory factors |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Microbiology |
issn |
1664-302X |
publishDate |
2020-03-01 |
description |
Aflatoxin M1 contamination of milk in Pakistan, like many developing countries, is poorly understood. The present study was therefore conducted to determine AFM1 contamination of milk and its contributory factors in Pakistan. We sampled milk and feedstuffs from 450 peri-urban dairy farms in seven major cities following a cross-sectional study design. Analysis of milk using ELISA revealed high contamination with an overall average of 3164.5 ng of AFM1/L, and significant differences (p < 0.001) between cities. The milk sampled from Gilgit, in northern hilly areas, had an average AFM1 level of 92.5 ng/L. Milk from other cities had 3529.7 ng/L average contamination, with only 5.7% samples qualifying the maximum tolerable limit of 500 ng of AFM1/L. Heavy mean aflatoxin contamination was found in bakery waste (724.6 μg/kg), and cottonseed cake (600.8 μg/kg). Rest of the other feedstuffs had moderate to low mean aflatoxin contamination, ranging from 66.0 μg/kg in maize stover to 3.4 μg/kg in wheat bran. The mean aflatoxin level in commercial dairy concentrates was 32.7 µg/kg. About 80% of the total aflatoxin intake of dairy animals was contributed by cottonseed cake alone due to its high aflatoxin contamination and proportion in dairy rations. On-farm storage time of oilseed cakes varied (p < 0.01) in different cities but was not associated with aflatoxin contamination. The exceptionally high AFM1 contamination suggests that milk from peri-urban dairy farms is a serious public health threat in Pakistan. This situation can be mitigated by reducing aflatoxin contamination in cottonseed cake and promoting the use of commercial concentrates and other feedstuffs with low contamination. |
topic |
aflatoxin cottonseed dairy feed milk |
url |
https://www.frontiersin.org/article/10.3389/fmicb.2020.00159/full |
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