Page 13 - Australian Pork Newspaper
P. 13

Successful mycoplasma hyopneumoniae eradication, and implementation of batch farrowing
Bulgaria announces plans to slaughter 24,500 pigs in swine fever outbreak
BULGARIAN veteri- nary authorities recent- ly said they would cull 24,000 pigs after de- tecting an outbreak of African swine fever at a pig farm in the north- east of the country.
Reuters reported the outbreak was the first at an industrial farm since August when the virus hit six breeding farms in the Balkan country, forc- ing the vet authorities to cull over 130,000 pigs.
The outbreak was de- tected at a farm in the vil- lage of Nikola Kozlevo in the region of Shumen, the Bulgarian Food Safety Agency said.
The presence of Af- rican swine fever was confirmed in the herd through laboratory tests.
In an interview tele- vised by Bulgarian Na- tional Television, food safety agency head Prof Paskal Zhelyazkov said the “infection has pen- etrated the site so exten- sively” that measures to separate and save unaf- fected pigs would not be possible.
Bulgaria has been de- veloping its biosecurity protocol over the past 12 months as, according to a recent report by The Sofia Globe, 42 outbreaks of ASF were confirmed in Bulgaria in 2019.
A growing number of outbreaks have and con- tinue to occur in com-
mercial herds, meaning the death toll is rising quickly.
The Sofia Globe re- ported about 70 million leva (about $A58 mil- lion) was dedicated to preventative measures and compensation for affected farmers last year.
OVER the previous 18 months, several herds in Queensland and north- ern NSW successfully eradicated mycoplasma hyopneumoniae using depopulation and repop- ulation protocols.
At the time of repopula- tion, many of these herds converted to a batch far- rowing system.
As a consequence, growth rates improved and sickness and deaths were reduced.
Of the sites that con- verted to batch farrowing, reductions in both pre- weaning mortality (down 3-8 percent) and weaner mortality (down 0.5-1 per- cent) have been observed in the 12-month period since repopulation.
Batch farrowing is a sys- tem where newly intro- duced gilts are synchro- nised to come on heat in a tight grouping every four weeks following oral ad- ministration of progester- one (sex hormone).
It enables the group of sows to farrow in a tight group every four weeks, so the farrowing and weaner sheds run as all- in/all-out.
Consequently, this im- proves within-herd bio- security and reduces dis- ease transmission from older pigs to younger na- ïve pigs.
Though it is an incred- ibly minute organism, M. hyo has a significant im- pact on the Australian pig herd.
Of all the diseases pre- sent in Australia, it causes the greatest economic
impact, with increased costs of production often exceeding $4 per pig sold, especially in combination with actinobacillus pleu- ropneumoniae.
Primarily M. hyo caus- es sickness and death through suppression of the pig’s lung immune func- tion, and later infection by secondary bacteria (such as pasteurella multocida).
Control of the disease in a herd is often difficult, requiring significantly in- creased antibiotic usage, alterations of pig flow and housing renovations to improve the air quality environment.
By following the cor- rect protocols, M. hyo is relatively easy to eradicate by total depopulation of the herd, and repopulation with pigs from a known ‘clean’ site.
Once the pathogen has left the host pig, it does not survive well in the environment, particularly if the environment is clean and dry.
Therefore, when remov- ing all pigs from the site, it is suggested a window of at least four weeks is provided before reintro- ducing new pigs onto farm.
During this window, it is important to ensure all organic matter is removed from the environment (such as floors, walls and walkways) prior to disin- fection.
Good-quality foaming detergents are incredibly beneficial for breaking down both organic matter and biofilms, thus expos-
ing the pathogens to the disinfectant, UV light and higher temperatures.
Make sure all clothing, footwear and pig handling equipment are disposed of and replaced prior to dis- infecting the site.
Talk to your farm vet about any depopulation and repopulation plan to eradicate M. hyo or any other farm diseases or convert to a batch farrow- ing program.
The best time to act is when the net profit per pig sold is low, thus minimis- ing the payback time.
It’s also the time to for- mulate a sound biosecurity plan to protect the herd from the introduction of new diseases.
Dr Joshua Timmer Scolexia Avian and Ani- mal Health
■ Here’s my Card ■ Here’s my Card ■ Here’s my Card
STM INSPIRED MOLECULAR SOLUTIONS
Technical Services Manager – Pacific
mob: 0412 888 485 rick.carter@kemin.com
Suite 6-7, 694 Pacific Highway, Killara NSW 2071, Sydney, Australia & New Zealand Phone: 61 2 9844 5700 | Fax: 61 2 9418 2544
Rick Carter, PhD
               
                 
                   
                 
                 
                 
               
                 
                      
                 
                                       
                                     
                 
            
                                                                
                               
www.porknews.com.au
Australian Pork Newspaper, January 2020 – Page 13
Matt Henry
Country Manager (AgriFood Australia)
STM INSPIRED MOLECULAR SOLUTIONS
mob: 0439 136 602 matthew.henry@kemin.com
Suite 6-7, 694 Pacific Highway, Killara NSW 2071, Sydney, Australia & New Zealand Phone: 61 2 9844 5700 | Fax: 61 2 9418 2544
Alltech.com Alltech       
Lethbridge, Victoria
Glencoe, Queensland
Freecall:
Facsimile:
Mobile:
Email: lethbridge@porkstorks.com.auEmail: glencoe@porkstorks.com.au
1800 647744 (03) 5281 7547 0400 672 418
Phone: Facsimile: Mobile:
(07) 4699 3011 (07) 4699 3055 0400 672 418
Delivering Excellence in Swine Reproduction
Phone: 02 9609 7922
Fax: 02 9609 7923 admin@nationalfeedsolutions.com.au
www.nationalfeedsolutions.com.au
PO Box 6370 Wetherill Park BC NSW 2164
Suppliers of Elite nutrition and solutions
Kym Miller 0439 066 054 Luke Steinborner 0439 066 006 Bill Steinborner 0499 009 293 Kate Parry 0448 340 619


































































































   11   12   13   14   15