Page 16 - Australian Pork Newspaper

Insights into swine erysipelas
n Diamond skin disease can induce sow abortion
Effluent-proof pump
below the suction port. The additional ad- vantage to the user is that no pipework has to be disassembled, the pump doesn’t have to be moved and it can be cleared of any in- ternal blockage without having to disassemble or move the pump to a
AUSSIE Pumps re- ports good results from its heavy-duty Aussie GMP self- priming semi-trash pump units in piggery applications.
Aussie Pumps set out to replace long-column sump pumps and sub- mersibles with self- priming pumps and was surprised by the success, particularly in livestock waste applica- tions.
Thepumps–ina range from 2” all the way through to big 6” – will handle flows of up to 4000LPM.
“What growers like is being able to ser- vice the pump without having to pull it out of the pit,” Mood said.
workshop.
The cast-iron range
The big news is that some models are now available in a range of 316 cast stainless-steel materials, providing a combination of both abrasion and corrosion resistance.
“Even clearing a ‘choke’ is only a matter of minutes and without the inconvenience of having to pull the pump out of the pit to get access to the wet end.”
of semi-trash pumps also feature a stainless- steel wear plate, and all come with silicone car- bide seals.
Aussie Pumps product manager Mood Ellahi said, “The big open impellers will handle solids in suspension, while the self-priming design means the pump never needs priming as an end-suction pump does,”
Aussie’s GMP pump range in semi-trash configurations has a standard cast-iron line as well.
The big self-priming stainless-steel versions – available in 2” up to 4” – are all self- priming and feature silicon carbide me- chanical seals with a removable front suc- tion valve cover that enables easy servicing.
The cast-iron pumps feature a front-mounted clean-out door, located
“These motor pumps come close, coupled to top quality 2-pole electric motors, and the pumps from 4kW up come mounted on a heavy-duty steel base for installation conveni- ence,” Mood said.
Aussie GMP motor pump with new 316 stainless- steel materials that are corrosion and abrasion resistant.
Click on ‘Aussie Pumps Pump Smart 7’ to view the latest Aussie Pumps catalogue.
“For locations where liquid is corrosive, the bases are made in stain- less steel.”
Further informa- tion is available from Aussie Pumps, located at Castle Hill in NSW.
Products are available at www.aussiepumps. com.au
SWINE erysipelas is an infectious disease caused by the bacte- rium erysipelothrix rhusiopathiae – seen mainly in growing pigs and characterised clini- cally by sudden death, fever, skin lesions and arthritis.
erysipelas can be divided into acute, subacute and chronic forms.
monic for swine erysip- elas.
Prevention
The fever can induce abortion in pregnant gilts and sows.
Pigs with the acute sep- ticaemic form may die suddenly without showing any clinical signs.
Sows should be vacci- nated three to four weeks prior to farrowing and boars should be vacci- nated every six months.
Stress factors such as overstocking, mixing pigs after weaning and sudden changes in temperature can trigger clinical ery- sipelas.
Acutely infected pigs have a fever, walk stiffly on their toes, spend a lot of time lying down separate from other pigs and resent being disturbed.
Progeny may need vac- cination if there is a high challenge.
Environmental con- tamination is common because bacteria are ex- creted via saliva, nasal se- cretions, faeces and urine.
Anorexia and thirst are common.
Isolation of erysipelo- thrix rhusiopathiae from acutely affected pigs pro- vides a definitive labora- tory diagnosis of swine erysipelas.
If disease breakdown occurs despite a vacci- nation program, review hygiene and management practices and consider changing to all-in-all- out production systems in consultation with your veterinarian.
Erysipelothrix rhusi- opathiae can survive for weeks outside the pig.
The treatment of choice is penicillin.
Autogenous – herd- specific – killed vaccines can be produced once the serotypes in a herd have been identified.
Ecoshelters with deep litter bedding on earth bases can allow an en- vironmental build-up of bacteria.
Clinical signs of the subacute form include characteristic skin le- sions, inappetence and a mild fever.
Treatment early in the course of disease usually produces a dramatic im- provement within 24-36 hours.
Further information on registered vaccines is available at portal.apvma. gov.au/pubcris
Subclinical infection can also occur where no disease is apparent but may lead to chronic dis- ease.
Acute erysipelas cannot easily be differentiated clinically from other sep- ticaemic diseases such as actinobacillus suis, but the combination of sudden death in previ- ously normal pigs, fever, stiff gait and a reluctance to move – but quite re- sponsive to humans with a bright demeanour – is highly suggestive.
All gilts and young boars should be vacci- nated before entering the breeding herd.
Skin lesions may vary from red to purple wide- spread discolouration of the ears, snout and abdomen to diamond- shaped skin lesions al- most anywhere on the body.
Treatment
Erysipelothrix rhusi- opathiae also causes pol- yarthritis in sheep and lambs and serious mor- tality in turkeys.
There is no practical treatment for chronic swine erysipelas.
In humans, infection causes erysipeloid, a local skin lesion that occurs mainly as an occupa- tional hazard of abattoir workers, veterinarians, laboratory workers and such.
The chronic form may follow acute or subacute disease as well as sub- clinical infection and is characterised most com- monly by arthritis.
The organism is oc- casionally isolated from cases of endocarditis in humans and rarely causes acute septicaemic disease. Clinical signs
Signs of heart problems due to infection of the heart valves may be evi- dent occasionally and will be most obvious after ex- ertion, which may lead to sudden death.
Clinical signs of swine
Diamond-shaped skin lesions are pathogno-
Pig with typical diamond-shaped skin lesions as a result of erysipelothrix rhusiopathiae infection.
In this form, the skin le- sions may not persist for more than a few days.
Diagnosis
Nourish the biome
and see profits flourish
FARM THE BIOME WITH SIGNIS
The gut biome is an essential component of animal health. It needs to grow and mature well in order to ensure resilience in the herd. Signis
- the first of a new class of additive, stimbiotics - influences biome development delivering a beneficial microbial population. The healthier the biome, the healthier the profits. Find out why Signis is getting so much attention @ www.abvista.com
FOR BIOMES THAT ARE GOOD TO GROW
Page 16 – Australian Pork Newspaper, August 2022
www.porknews.com.au