Meat+Poultry - June 2022 - 66

FOOD SAFETY
to remove O157:H7 during the slaughter and
fabrication process.
CLOSED SYSTEM, BETTER RESULTS
USMARC scientists sequenced the O157:H7
genome by using multiple samples of the E.
coli strain in the closed research feedlot at Clay
Center. This provided a unique opportunity for
researchers to study how this pathogenic strain
of E. coli changed over time. A closed feedlot
means that only calves that were born there
are put into the feedlot population - meaning
there has been a closed loop of breeding at the
feedlot for decades.
" I don't know if the study could have been
done anywhere else in the world, " said Jim
Bono, USMARC research microbiologist and
lead researcher.
Other feedlots get calves or cows from
around the country, that are often bringing
with them different strains of O157 which
would change the sample data the center
was studying.
" We have a lot
of information
on how E. coli
changes on a
petri dish in
a lab, but we
really wanted
to understand
how it changed
in cattle
with all these
different
environmental
factors. "
- MAGGIE WEINROTH
This lack of diversity was one of the major
strengths of the study. The center had been
taking samples of E. coli from its herds since
1997, which provided researchers with the
ability to pull frozen strains of the bacteria
from the last 23 years. Using whole genome
sequencing, USMARC researchers obtained a
comprehensive look at how the E. coli genome
evolved in cattle.
The question was: how fast does the
O157:H7 strain change over time and how
different or similar could the strains be over a
period of many years, said Maggie Weinroth, a
USDA computational biologist and researcher
on the project.
What scientists found was that there were
four main strains of O157 present on the research
feedlot and those strains had about two base
pairs change in the chromosome every year. The
interesting part was that there was variation in
that genetic change depending on the group.
" It gives a lot more context into how E. coli
actually changes in a natural environment, "
66 MEAT+POULTRY | 06.22 | www.meatpoultry.com
dusanpetkovic1 - stock.adobe.com
http://viersindustries.com

Meat+Poultry - June 2022

Table of Contents for the Digital Edition of Meat+Poultry - June 2022

Meat+Poultry - June 2022 - Intro
Meat+Poultry - June 2022 - 1
Meat+Poultry - June 2022 - 2
Meat+Poultry - June 2022 - 3
Meat+Poultry - June 2022 - 4
Meat+Poultry - June 2022 - 5
Meat+Poultry - June 2022 - 6
Meat+Poultry - June 2022 - 7
Meat+Poultry - June 2022 - 8
Meat+Poultry - June 2022 - 9
Meat+Poultry - June 2022 - 10
Meat+Poultry - June 2022 - 11
Meat+Poultry - June 2022 - 12
Meat+Poultry - June 2022 - 13
Meat+Poultry - June 2022 - 14
Meat+Poultry - June 2022 - 15
Meat+Poultry - June 2022 - 16
Meat+Poultry - June 2022 - 17
Meat+Poultry - June 2022 - 18
Meat+Poultry - June 2022 - 19
Meat+Poultry - June 2022 - 20
Meat+Poultry - June 2022 - 21
Meat+Poultry - June 2022 - 22
Meat+Poultry - June 2022 - 23
Meat+Poultry - June 2022 - 24
Meat+Poultry - June 2022 - 25
Meat+Poultry - June 2022 - 26
Meat+Poultry - June 2022 - 27
Meat+Poultry - June 2022 - 28
Meat+Poultry - June 2022 - 29
Meat+Poultry - June 2022 - 30
Meat+Poultry - June 2022 - 31
Meat+Poultry - June 2022 - 32
Meat+Poultry - June 2022 - 33
Meat+Poultry - June 2022 - 34
Meat+Poultry - June 2022 - 35
Meat+Poultry - June 2022 - 36
Meat+Poultry - June 2022 - 37
Meat+Poultry - June 2022 - 38
Meat+Poultry - June 2022 - 39
Meat+Poultry - June 2022 - 40
Meat+Poultry - June 2022 - 41
Meat+Poultry - June 2022 - 42
Meat+Poultry - June 2022 - 43
Meat+Poultry - June 2022 - 44
Meat+Poultry - June 2022 - 45
Meat+Poultry - June 2022 - 46
Meat+Poultry - June 2022 - 47
Meat+Poultry - June 2022 - 48
Meat+Poultry - June 2022 - 49
Meat+Poultry - June 2022 - 50
Meat+Poultry - June 2022 - VDGa
Meat+Poultry - June 2022 - VDGb
Meat+Poultry - June 2022 - 51
Meat+Poultry - June 2022 - 52
Meat+Poultry - June 2022 - 53
Meat+Poultry - June 2022 - 54
Meat+Poultry - June 2022 - 55
Meat+Poultry - June 2022 - 56
Meat+Poultry - June 2022 - 57
Meat+Poultry - June 2022 - 58
Meat+Poultry - June 2022 - 59
Meat+Poultry - June 2022 - 60
Meat+Poultry - June 2022 - 61
Meat+Poultry - June 2022 - 62
Meat+Poultry - June 2022 - 63
Meat+Poultry - June 2022 - 64
Meat+Poultry - June 2022 - 65
Meat+Poultry - June 2022 - 66
Meat+Poultry - June 2022 - 67
Meat+Poultry - June 2022 - 68
Meat+Poultry - June 2022 - 69
Meat+Poultry - June 2022 - 70
Meat+Poultry - June 2022 - 71
Meat+Poultry - June 2022 - 72
Meat+Poultry - June 2022 - 73
Meat+Poultry - June 2022 - 74
Meat+Poultry - June 2022 - 75
Meat+Poultry - June 2022 - 76
Meat+Poultry - June 2022 - 77
Meat+Poultry - June 2022 - 78
Meat+Poultry - June 2022 - 79
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Meat+Poultry - June 2022 - 81
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Meat+Poultry - June 2022 - 83
Meat+Poultry - June 2022 - 84
Meat+Poultry - June 2022 - 85
Meat+Poultry - June 2022 - 86
Meat+Poultry - June 2022 - 87
Meat+Poultry - June 2022 - 88
Meat+Poultry - June 2022 - 89
Meat+Poultry - June 2022 - 90
Meat+Poultry - June 2022 - 91
Meat+Poultry - June 2022 - 92
Meat+Poultry - June 2022 - MARELa
Meat+Poultry - June 2022 - MARELb
Meat+Poultry - June 2022 - MARELc
Meat+Poultry - June 2022 - MARELd
Meat+Poultry - June 2022 - MARELe
Meat+Poultry - June 2022 - MARELf
Meat+Poultry - June 2022 - MARELg
Meat+Poultry - June 2022 - MARELh
https://digital.meatpoultry.com/sosland/mp/meatpoultry-march-2024
https://digital.meatpoultry.com/sosland/mp/special-supplement-bacon-trends-technology-march-2024
https://digital.meatpoultry.com/sosland/mp/meatpoultry-february-2024
https://digital.meatpoultry.com/sosland/mp/meatpoultry-january-2024
https://digital.meatpoultry.com/sosland/mp/meatpoultry-december-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-november-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-october-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-september-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-august-2023
https://digital.meatpoultry.com/sosland/mp/special-supplement-ground-meat-trends-technology-july-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-july-2023
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https://digital.meatpoultry.com/sosland/mp/meatpoultry-may-2023
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https://digital.meatpoultry.com/sosland/mp/special-supplement-bacon-trends-technology-march-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-march-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-february-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-january-2023
https://digital.meatpoultry.com/sosland/mp/meatpoultry-december-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-november-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-october-2022
https://digital.meatpoultry.com/sosland/mp/special-supplement-ground-beef-trends-technology-september-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-september-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-august-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-july-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-june-2022
https://digital.meatpoultry.com/sosland/mp/special-supplement-meat-alternative-trends-and-technology-may-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-may-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-april-2022
https://digital.meatpoultry.com/sosland/mp/special-supplement-bacon-trends-technology-march-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-march-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-february-2022
https://digital.meatpoultry.com/sosland/mp/meatpoultry-january-2022
https://digital.meatpoultry.com/sosland/mp/-meatpoultry-december-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-november-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-october-2021
https://digital.meatpoultry.com/sosland/mp/special-supplement-ground-meat-trends-technology-october-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-september-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-august-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-july-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-june-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-may-2021
https://digital.meatpoultry.com/sosland/mp/special-supplement-meat-alternatives-may-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-april-2021
https://digital.meatpoultry.com/sosland/mp/meatpoultry-march-2021
https://digital.meatpoultry.com/sosland/mp/2021_02_01
https://digital.meatpoultry.com/sosland/mp/2021_01_01
https://digital.meatpoultry.com/sosland/mp/2020_12_01
https://digital.meatpoultry.com/sosland/mp/2020_11_01
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http://digital.meatpoultry.com/sosland/mp/2018_04_01
http://digital.meatpoultry.com/sosland/mp/2018_03_01
https://www.nxtbook.com/sosland/mp/2018_02_01
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https://www.nxtbook.com/sosland/mp/2015_01_01_mp
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http://digital.meatpoultry.com/sosland/mp/2004_05_01
http://digital.meatpoultry.com/sosland/mp/2004_04_01
http://digital.meatpoultry.com/sosland/mp/2004_03_01
http://digital.meatpoultry.com/sosland/mp/2004_02_01
http://digital.meatpoultry.com/sosland/mp/2004_01_01
http://digital.meatpoultry.com/sosland/mp/2003_12_01
http://digital.meatpoultry.com/sosland/mp/2003_10_01
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