This is the first reported contamination of feed supplies in China
and increases the concerns for pig farmers trying to avoid the
disease. It also raises the economic pressure on feed manufacturers
already struggling with low margins and slowing demand.
In a statement to the Shenzhen Stock Exchange, the company said the
disease was found in feed samples provided by its 51 percent-owned
subsidiary, Bili Meiyingwei Nutrition Feedstuff.
The discovery occurred during inspections after an outbreak of
African swine fever on a farm in Qingyang county located in the
eastern Chinese province of Anhui.
Tangrenshen said the origin of the disease remained unclear and the
matter was still under investigation.
China has struggled to stem the rapid spread of African swine fever,
which has now reached most of the country's pig-farming regions. The
country produces almost 700 million pigs a year, or about half of
the world's total.
Beijing earlier said many of the cases in Anhui were caused by
feeding kitchen waste to pigs that was not properly processed to
kill the virus. However, many industry experts have long suspected
feed supplies could be contaminated with the disease.
African swine fever, which cannot be cured and has no vaccine, is
known to survive for weeks in feed ingredients like soymeal.
"I think buyers will be quite worried about purchasing feed from
similar subsidiaries," said Pan Chenjun, senior analyst at Rabobank.
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She added that major pig producers are already worried about how to
verify the safety of their feed supplies.
"If there's any contamination, it's very difficult to control."
Tangrenshen relies on animal feed for most of its income, reporting
2017 feed sales of 12.6 billion yuan ($1.81 billion). Like many
Chinese feed companies, it has recently moved into pig farming and
processing.
It acquired Bili Meiyingwei, also known as Shenzhen PREMIXINVE
Nutrition Co. Ltd, from Belgian feed maker INVE Belgium in 2016.
The company said the impact on its operations would be "relatively
small," with Bili Meiyingwei accounting for only 2.27 percent of the
group's net profit in the first nine months of 2018.
The group's shares fell as much as 6.6 percent on Monday to 4.56
yuan ($0.66).
African swine fever has ravaged small pig farms in Anhui but
authorities had recently lifted restrictions in four cities there
after no new cases were reported for six weeks.
That run ended at the weekend when a fresh outbreak was discovered
on a farm with 8,339 pigs in Qingyang county in the south of Anhui.
(Reporting by Dominique Patton, Tom Daly and Liangping Gao; Editing
by Nick Macfie and Christian Schmollinger)
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