Positive interactions with sows reduce piglet crushing
Encouraging staff to have more direct
involvement with managing and handling sows can have positive impacts on herd
welfare and mortality rates, say scientists.
Researchers at the University of
Copenhagen found that as little as 15 seconds of direct contact with sows five
days before and after farrowing can significantly improve sow behaviour.
When combined with playing classical
music — a strategy which has been shown to relax humans and dogs — in sow units
for up to 12 hours a day, mortality during lactation was reduced by 2%,
In a project designed to find ways to
reduce piglet mortality caused by crushing, researchers attempted to find ways
to make sows calmer so they react less when people enter farrowing units.
Project leader Vivi Aarestrup
Moustsen, PhD, said the development of highly prolific sows and loose housing
systems meant piglet mortality through crushing is becoming an increasing
challenge for pig producers.
“With increases in herd sizes, we are
also seeing more caretakers in the barn who need to learn have to look after
piglets, so we have new challenges when it comes to piglet survival,” she said.
Carried out as part of the European
Union’s PROHEALTH project, the study involved playing classical music to two
different herds, as well as encouraging staff to have ‘positive interactions’
with each sow every day.
“People came in and stroked the neck
of the sows in the days proper to farrowing,” Aarestrup Moustsen said.
“Stroking meant that the sows were less reactive, which is very important when
we handle the piglets.”
Aarestrup Moustsen said the two herds
saw definite improvements, with sows reacting more calmly to handling after
Meanwhile a second study in the
project that analyzed mortality rates of positively
handled sows discovered mortality during lactation were reduced by 2%.
As well as reducing piglet mortality,
Aarestrup Moustsen said improving sow behavior through handling also created a
safer and more pleasant working environment for staff.
“In our study, the farm staff involved
said they enjoyed spending more time with the animals, and that’s something we
could really focus on,” she said.
“Lots of people enjoy working in
kindergartens with children, and in many respects working in a farrowing unit
is like a kindergarten. The sows are happy if you treat them well, in the same
way that mums are happy if their children are well looked after.
“If we can tell that story, and show
people that they have a potential to make a difference to many lives, then we
can motivate people and create jobs in an industry they are happy to be part
Posted on August 13, 2019