Page 6 - National Poultry Newspaper

Figure 1. S. enteritidis counts in the caecum at seven and 14 days post-infection.
• approved suppliers should ideally have an audited quality manage- ment system that includes monitoring & controlling salmonella
• no long grass in or around the mill site
Figure 2. S. enteritidis counts in faeces at three and five days post-infection.
3.Treatment of higher risk feed ingredients with a liquid inhibitor product:
mo
ll
Control Programm
Managing salmonella in and via feed
* from P4
risk ingredients and con-
product:
• e.g. breeder feed,
ures 2 and 3).
taminated ingredients. Exposure to heat in the pelleting process can kill salmonella. Salmonella inhibitor products are useful in mash feeds and are also used in pelleted/ crumbled feed as a sup- portive adjunct to the pel- leting heat-kill step.
• finished feed testing schedule for salmonella and total enterobacte- riaceae.
In a similar trial at the same research institute in Italy using broiler chick- ens orally infected with S. enteritidis at 11 days of age, the same coated product (FormaXOL) in- cluded in feed at 750g and 1kg/tonne, significantly reduced the number of birds with caecal samples and neck skin samples that were positive for sal- monella at day 40 (Table 2).
Example 3
Examples of practical steps to consider in a feed mill’s salmonella manage- ment program include:
• routine truck clean- ing including fogging with a powdered inhibitor product
1.Feed ingredient sup- ply:
8. Feed mill pest control program:
• establish & maintain an approved supplier sys- tem
• grounds around mill to be well drained
When broiler chicks (50/ group) were orally in- fected with S. enteritidis at three days of age and then sampled the next day, birds receiving feed that contained beta-1,3-glucan (Aleta, Kemin Industries) from a specific micro- algae (Euglena graci- lis) showed significantly reduced detection of S. enteritidis in the liver & spleen compared with sal- monella challenged birds not receiving beta-1,3- glucan (Table 3).
• ensure a delivery truck hygiene program is in place (the use of dedicated vehicles is an advantage).
• cover intake pits when not in use
2. Feed ingredient re- ceival:
• have systems in place to prevent wild bird entry, e.g. intake pit area and out-loading area entry & exit doors, mesh bird net- ting use where practical
• establish a sampling & total enterobacteriaceae count/salmonella testing schedule
• exclude domestic & wild animals.
The bird
A significantly reduced percentage of birds with liver and spleen detec- tions of S. enteritidis was also found in birds receiv- ing feed that contained beta-1,3-glucan (Aleta, Kemin Industries) when the birds were challenged with S. enteritidis at seven days of age and tested three days later.
• flush ingredient in- take pits & augers with a powdered inhibitor prod- uct
Salmonella inhibitor products based on organic acids and organic acid- formaldehyde blends are principally aimed at feed hygiene.
• powder fog ingredi- ent storage bins & flat storage areas with a pow- dered inhibitor product.
While organic acid- based products will have effects on salmonella in the upper digestive tract, activity will diminish along the small intestine.
tion line
or 2kg/tonne resulted in
management
•
cool
er
cl
eaning
significant reductions in S. enteritidis counts in the
• the overall program
nea
included in the feed at 1
feed hygiene for in-bird
schedule including fog-
should create multiple
ging with a powdered in-
hurdles for salmonella.
lations from Salmonella hibitor
c
o
n
t
am
in
a
t
i
on
w
i
t
h Sal CURBTM and FormaXOLTM
• bucket elevator boot
days after infection (Fig- ure 1).
contact Kemin Industries
tor into boots
counts were also recorded Manager Rick Carter on at three, five, 10 and 12 02 9482 2357 or 0412 888
b
e
c
o
m
ea
k
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y
p
a
rt of your comprehensive pathogen control program
c
for out-loading bins, bag packing bins & bagged feed warehouse areas in- cluding fogging with a powdered inhibitor prod- uct.
•
le
a
n
ing
sc
h
e
du
le
s
days after infection (fig- 485.
starter feed, pullet rearing feed, mash feed
Example 2
7. Feed delivery trans- port:
• use of dedicated ve- hicles.
• immediately remove spilt feed & feed ingredi- ents from all locations in & around the feed mill
• extensive, controlled & managed use of rodent bait stations
19 KAA HP Sal CURB 147 x 210mm (new logo) with 3mm bleed.pdf 1 7/23/2019 2:48:29 PM
Figure 3. S. enteritidis counts in faeces at 10 and 12 days post-infection.
• use of press diverter or inhibitor product treat- ment of initial batches
• as a routine treat- ment, or as required based on testing &/or prior his- tory
So, while the ingredients in these products will not reach the hindgut of the bird, their actions on sal- monella in the feed and in the upper tract of the bird can reduce viable salmo- nella numbers reaching the lower gut.
Beta-1,3-glucan ‘primes’ the bird’s innate immune system enabling enhanced responsiveness to subse- quent challenges.
• when higher risk in- gredients are used in criti- cal, more sensitive diets (this may require desig- nated storage bins)
These results indicate reduced trans-location of salmonella from the gut into the birds’ tissues due to beta-1,3-glucan supple- mentation.
• treat at the supplier’s premises or at the feed mill.
Additional to feed hy- giene, products contain- ing ingredients that have been specially coated to help ensure transit and activity along the diges- tive tract of the bird can be useful (examples 1 and 2), as can products aimed at ‘priming’ the bird’s immune system to enable enhanced immune responsiveness to salmo- nella (example 3). Example 1
This research was con- ducted by the United States Department of Ag- riculture.
4. Mixer & pellet press: • mixer cleaning re- gime, i.e. removal of ac- cumulated material & ap- plication of an inhibitor
Summary
product
• ensure press is op-
•Salmonella is a food safety hazard of biologi- cal origin
erating at required desig- nated conditions
• there are many known and practical interven- tions that can be adopted in the feed mill and on the farm to manage this hazard
• press & diverter cleaning schedule includ- ing dust control around the pellet press.
At seven days of age, broiler chickens were heavily infected by orally dosing a field strain of salmonella enteritidis at a research institute in Italy.
•vaccines, farm biose- curity & farm hygiene all play key roles
C
NATIONAL
M Y CM
MY CY CMY K
K
Kem
now someone who would be
in’s Feedmill Sal terested in this newspaper?
Safely protect your feedstuffs and animal popu
n (Australia) Pty. Limited
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in
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oupofcompanies2019.All rightsreserved.® TMTrademarksofKemin Industries, Inc.,U.S.A .
5. Post-pellet press hy- giene:
• an on-going, com- prehensive & integrated preventative program is needed in the feed mill
• identify any equip- ment that allows build-up of feed & moisture pen- etration
A coated formulation of
• Sal CURB is used for feed hygiene
• mixer application
an essential oils/organic
• FormaXOL & Aleta
of a
flush through the produc-
acids mixture (FormaX-
pow
dered in
hibitor
OL, Kemin Industries)
are used to complement
c
a
ec
u
m
at
s
ev
e
expertise and support, laboratory testing services, application engineerin
clean-out schedule & ad-
Reductions in the faecal (Asia) Technical Services
dition of powdered inhibi-
y training to meet your needs. Trust Kemin and Sal CURB and FormaXOL t
n
an
d
1
4
For further information,
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Page 6 – National Poultry Newspaper, May 2020 feeds with an inhibitor www.poultrynews.com.au
Certainstatementsmaynotbeapplicableinallgeographicregions.Productlabelingandassociatedclaimsm aydifferbaseduponregulatoryrequirements.
6. Treatment of critical
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