COCCI Profile: Top Dog
Vision, innovation and an aversion to anything routine keep Dr. Rae Fischer well ahead of the pack.
Dr. Rae Fischer says that competing
effectively in the poultry
industry is a lot like pulling
a dog sled across Canada's frigid Northwest
Territories. "If you're not the lead
dog," the veterinarian insists, "the view
is always the same."
With that picture in mind, the owner
and CEO of Fisher Feeds, Listowel,
Ontario, says he loathes complacency
and is always ready to embrace new
products and technologies that will
help his family's poultry operation and
feed customers operate more efficiently,
profitably and responsibly.
"I practiced veterinary medicine for
17 years and, in that time, I worked
with some very good practitioners -
the kind that always wanted to be upto-
date on everything," he recalls.
"They were clear thinkers, and very
aggressive in utilizing new technology
and being the best they could be. For
me, that was the fun part. Routine
things tend to be routine."
Fischer admits that raising birds and
making feed are activities that require
attention to detail and dependence on
routine procedures. "But, trying to
improve and discover new ways of
doing things are what get me out of
bed in the morning," he explains. "It
doesn't cost any more to feed a good
horse. Likewise, it doesn't take a whole
lot more to be the best producer, or at
least as good as you can be. I believe
that has to be our goal."
'Nimble and quick'
Fischer's business, which he runs with
son Matthew, is based about 100 miles
northwest of Toronto. Fisher Feeds produces
approximately 100,000 tons of
feed per year; 65% is for poultry and
the rest is for swine. Half of the poultry
feed is sold to area producers. The rest
is used by his family's poultry operation
and its associated contract farms,
which together place about 1 million
broilers every 9 weeks. Fischer's birds
are separated by sex. Cockerels are
grown to 2.6 kg (5.73 lbs) in 41 days,
and pullets reach 2.4 kg (5.30 lbs) in 42
days.
Fischer thinks it's important for his
operation to be "nimble and quick"
with decision-making so it can take
advantage of new things that come
along.
Editor's note: Dr. Rae Fischer and his company, Fisher Feeds, have similar names, but they are spelled differently. |
"If we see something that we think
is really good "a new additive or
health product, for example "we
move on it quickly without a lot of
bureaucracy. We're constantly trying
new and better ways of doing things,
sometimes to the frustration of our feed
mill manager. We can find out what
works in our own facilities and then
share it with our customers."
The latest example of that commitment
is Fisher Feeds' approach to coccidiosis
management. For years the
company relied on in-feed products, a
natural complement to its feed business.
But Fischer, drawing on his veterinary
background, was not convinced
that medicated feed was the best way
to keep the persistent disease in check
and decided to introduce vaccination
into the coccidiosis control program.
For one thing, there have been
reports from around the globe that the
Eimeria organisms that cause coccidiosis
have developed resistance due to
prolonged use of in-feed anticoccidials.
"We've done some sensitivity studies,
and I don't believe we have seen
resistance in our facilities, but we have
seen some feed medications and chemicals
lose their effectiveness over time.
I have also seen farms where there is
resistance, and I know it's a very real
problem," he says.
Meeting consumer demand
There were also regulatory and consumer
issues to consider. While Canada
shares a 3,000-mile border with the
United States, the world's largest broiler
producer, poultry-production practices
and consumer attitudes in Canada
are much closer to those in Europe,
Fisher says.
"We've got a tremendous European
influence in this country, so in terms of
production trends, I think we need to
look at the ban on antibiotic growth
promoters in Europe [effective January
1, 2006].
"As a veterinarian, I want to see
these decisions made on science, not
emotion or propaganda. But either
way, if that's what the consumer wants,
somebody's going to have to produce
it. We need to be ready for drug-free
production, and that's one of the reasons
we wanted to start vaccinating."
Initially, Fischer didn't see any big
financial incentives for initiating vaccination,
which stimulates immunity
against coccidiosis by delivering a controlled
dose of live Eimeria oocysts to
birds. He knew from published reports
that vaccinated broilers performed as
well or better than medicated birds. At
the feed mill, he was told there was
some concern about lost revenues from
the sales of coccidiosis medications.
Still, Fischer wanted to move ahead
with his plan.
Seeing Red
Virtually everyone in the poultry industry knows that young
chicks are attracted to red. It's one of the reasons that
Schering-Plough Animal Health recommends adding red
dye to the coccidiosis vaccine solution. The red encourages
preening among vaccinated chicks and facilitates the
ingestion and spread of live oocysts that stimulate natural
immunity. |
"This may sound funny coming
from someone who owns and operates a feed mill, but I just hate putting
chemicals and antibiotics in the feed,"
he says. "I want the emphasis to be on
good nutrition programs, with quality
raw materials, ingredients and processing.
When you add drugs to the mix,
you have to flush the lines after every
batch, keep track of shuttle programs,
worry about medicating the wrong feed
and so on. Salinomycin, for example, can kill turkeys. If we could take every
medication out of this mill, it would be
a dream come true "even though I
still think they can do a lot of good
in the right situations and may be
required for therapeutic use."
Sensible option
Fischer was also concerned that excessive
use of medications was becoming
a substitute for good management and
was making producers complacent.
"Our problem is that production has
become very comfortable," Fischer
says. "Producers need motivation for
change, and the trend toward raising
drug-free birds provides one.
Vaccination just seemed like a sensible
thing for us to try."
Fisher Feeds' contract hatchery,
which supplies chicks to Fischer's own
farm and to Fisher Feeds' customers,
started immunizing day-old chicks with
Coccivac-B live coccidiosis vaccine in
the spring of 2004. This practice continued
for 24 weeks before rotating
back to a chemical and eventually to
ionophore antibiotics in the feed.
"We thought spring was a good time
to start with vaccination because there
was more air movement through the
barns and less of an Eimeria organism
buildup in the drier litter, which in
Canada is changed with each flock," he
explains. "But based on our experience
so far, I don't see why we couldn't vaccinate
year-round."
Fischer says he had expected to see
a drop in performance in the first vaccinated
flock, particularly in smaller
birds. This is because birds raised to 38
to 42 days have less time to bounce
back from an initial setback that might
occur as vaccination stimulates the
bird's immune system.
Good intestinal health
"We never saw the dramatic drop in
performance that we were looking for,"
Fischer reports, "probably because our
nutrition program helped to condition
the gut and help it tolerate the challenge
from the vaccine."
After returning to chemicals and
ionophores, Fischer also did not see a
big jump in production. In some cases,
he adds, performance actually went
down after vaccination stopped.
"In the end, I think a lot of this
comes back to the quality of the feed
program," he says. "Whether you're
vaccinating or medicating for coccidiosis,
it's important to promote good
intestinal health through nutrition."
Since 1997, Fisher Feeds has used a
feed expander before pelleting to optimize nutrient availability and eliminate
or significantly reduce pathogens.
"We get far more absorption high in
the gut than we do with normal, unexpanded
feed," Fischer says. "There's
less residue in the lower gut. I think
our gut health has improved with the
expanded feed, and we have fewer
challenges in the lower gut because
there's less substrate. The expanding
process does an excellent job of reducing
the bacterial load in the feed, which
is really important."
Nothing to fear
Vaccinating for coccidiosis wasn't a
new practice for Fischer. He had 8
years' experience with it in turkeys,
which obviously are grown to heavier
weights and can take full advantage of
the vaccine's lifelong protection.
"Vaccinating broiler chicks does
require good management and you
need to make sure things are done
properly, but the SprayCox spray cabinet
technology is good and definitely
not something to be afraid of," Fischer
insists. "The more you work with it, the
more you understand it. There just has
to be a motivation to change. For me,
it's controlling a very prevalent disease
without drugs in the feed. I really like
that idea."
Derek Detzler, manager of research
and development for Fisher Feeds, says
that coccidiosis vaccination has been
well received on the grow-out farms so
far. "If the vaccinated birds weren't
sprayed red, I don't think most producers
would have known the difference,"
he says, referring to the red dye in the
vaccine that promotes the preening and
distribution of the Eimeria oocysts that
stimulate immunity.
"Production is as good or better
than what we had before," concurs Eric
Martin, who manages 60,000 square
feet of finishing space at one of Fisher
Feeds' farms. "Vaccinated birds tend to
flush a little more around day 17 and
you may see some wetter litter."
High-rise barns
Most of Fisher Feeds' birds are grown
out in two- and three-story barns
stretching 40 to 46 feet (wide) with up
to 30,000 square feet of space.
Fischer Feeds' operation broods
chicks on one whole side of the house
for the first 5 days to help regulate the
young birds' exposure to the Eimeria
organisms in the vaccine, which are
passed and re-ingested to promote natural
immunity. "You don't want the
chicks to get too far away from the area
that's been seeded by the live vaccine,"
he says.
Detzler says this practice also keeps
the chicks close to the feeder to ensure
good intake. "We don't want the chicks
to have to look for feed," he explains.
"That 24 to 48 hours of fasting that can
occur in some flocks is a tremendous
detriment to gut development and the
immune system, so we make every
effort to get them off to a fast start and
build a healthy intestinal tract."
Looking ahead, Fischer thinks they
will eventually vaccinate for coccidiosis
all year round. "I don't see any scientific
reason why we couldn't vaccinate all
the way through "and that's something
we'll be looking at for the near
future," he says.
Ten Reasons to 'Impulse' ChicksDr. Rae Fischer presents these arguments for getting chicks off to a fast start with a good intestinal health program:1. Under optimum conditions, chicks can grow to 5 times their initial body weight in their first 7 days of life. 2. Broilers achieve maximum relative weight of the gastrointestinal organs between 3 and 8 days of age (Dror, Nir, Nitsan, 1977). 3. The highest increase in the volume of villi in the duodenum occurs at 4 days of age (Noy and Skylan, 1997). 4. Faster utilization of yolk in early fed birds could possibly be due to increased intestinal mechanical activity (Noy et al, 1996). 5. Weight in 6- and 7-week-old broilers has a direct linear relationship to the first week of rearing. This is not due to breeder age or day-old chick weight (Pezeshkian, 2002). 6. 1 extra gram of weight at 7 days means an extra 5 to 7 grams at market. (Aviagen and Cobb Vantress). 7. Broilers that fast for 24 to 48 hours have lower bursa weights and a lower bursa/body-weight ratio (Dibner et al, https://www.novusint. com/Public/Products/OasisNeonatalFeeding.asp). 8. Lower bursa weight leads to lower proliferation of lymphocytes (Dibner et al, 1998). 9. Delays in water and feed consumption depress immune response (Casteel et al, 1994). 10. Functional maturity of the gut is linked to maturation of the local immune system (Bar-Shira. Israel Journal of Veterinary Medicine. 2005; 60:No. 2.) |
Source: CocciForum Issue No.11, Schering-Plough Animal Health.