Page 10 - National Poultry Newspaper

High quality wastewater pump for Junee Prime Lamb
JUNEE Prime Lamb is one of the leading producers of premium quality lamb in Aus- tralia.
pump for the facility, he sought out the best and most reliable prod- uct for the job.
Being self-priming, it could be located at sur- face level, up to 7.5m above the wastewater level.
A family owned and operated business since 1997, the company spe- cialises exclusively in prime Australian lamb, and supplies its prod- ucts to many parts of the world.
Scott had experience with Gorman Rupp self-priming pumps at a large NSW abattoir and, because of the his- tory of reliability, ease of maintenance and proven long service life – even when operating in very harsh condition – he opted for Gorman Rupp pumps again in the Junee upgrade.
Scott has been very happy with his invest- ment and is a firm be- liever that buying qual- ity equipment provides not only tangible re- turns in operational ef- ficiency, but also intan- gible returns in peace of mind.
Junee Prime Lamb owns and operates modern lamb process- ing facilities on the outskirts of Junee, oc- cupying 182,000sq m and employing nearly 300 highly trained and dedicated staff.
The team at Hy- dro Innovations of- fered a Gorman-Rupp T3A60S-B ‘Super T Series’ self-priming solids-handling pump.
The Gorman-Rupp Super T Series range is available in sizes from 2” or 50mm through to 10” or 250mm, with flows from 3L/s through to 200L/s.
Their state-of-the- art production line is equipped with the lat- est technology, and the producer maintains strict hygiene stand- ards and regularly reviews processes to ensure they meet the highest quality stand- ards for the industry.
It is capable of han- dling solids up to 63mm and also stringy materials because of its ‘self-cleaning wear plate system’.
They are also availa- ble in various materials of construction to suit specific applications, such as stainless-steel components for cor- rosive wastewater and hardened components for abrasive fluids.
When operations manager Scott Newton needed a wastewater
The pump also has a lightweight inspection cover-plate to allow quick access for opera- tors to inspect pump internals or remove large pieces of debris.
More information on these pumps may be obtained from Hydro Innovations on 02 9898 1800 or info@ hydroinnovations.com. au
The Gorman-Rupp T3A60S-B ‘Super T Series’ self-priming solids-handling pump installed at Junee Prime Lamb.
Ovo vaccination can offer early immunity against prevalent pathogens, consistent vaccine delivery and a less labour-intensive process involving reduced handling of chicks. Photo: Daniel Tuttle
Five critical factors for in ovo vaccination success
IN ovo vaccination has with the head pointing tection, however, it cre- proximately between 17
proven popular in com- mercial hatcheries as it can offer early immu- nity against prevalent pathogens, consistent vaccine delivery and a less labour-intensive process involving re- duced handling of chicks.
away from the direction of the tilt.
ates a significant chal- lenge for in ovo vaccine delivery.
days and 12 hours, and 19 days and 4 hours of incubation.
While each of these benefits is achievable, in ovo programs do require some care to optimise the process.
“When we inject through the egg all of them may not be perfect- ly aligned, so the injec- tors must take that into consideration,” Dr Wil- liams said.
This has a sanitary role but also helps reduce cracking.
Sanitation by design
“It should be in the posi- tion to hatch with its head under the right wing, and we should begin to see the yoke being absorbed into the abdomen.”
With that in mind, Zoe- tis director of technical services Dr Chris Wil- liams outlines the five critical points to getting the best out of in ovo vac- cination programs.
Egg location
After locating the surface of the egg, it is important to adjust the trajectory to hit it at a perpendicular angle, rather than straight up and down.
The starting of hatch, or pipping, is another con- cern.
Though eggs are incu- bated with the small end pointing downward as standard, eggs may lean off-centre in the incuba- tion tray.
“Shell is a formidable barrier, as it’s made to protect the embryo while it’s developing” Dr Wil- liams said.
“Effective needle sani- tation is the cornerstone of the technology as it is applied commercially,” Dr Williams said.
To ensure proper vac- cination procedure, it is important to consider the exact nature of the vac- cine being used.
In turn, the embryo ori- ents according to gravity
In providing that pro-
Dual-needle systems mean that sanitation is achieved in a separate step from injection.
“Marek’s vaccine is a herpesvirus that is con- tained in a fibroblast cell, and this cell suspension is the vaccine,” Dr Wil- liams said.
This makes the angle and the orientation of an egg an important consid- eration.
The optimal egg injec- tion system will have a ‘needle inside a needle’ system that allows one needle to penetrate the shell only and another that delivers the vaccine to either the embryo or the amnion.
“We’re more concerned with the development of the embryo physiologi- cally,” Dr Williams said.
Horizontal adjustment is then also needed, as eggs are not all the same height.
Shell penetration
Sanitation needs to be considered at a system level and in the environ- ment where vaccination is carried out, but effec- tive sanitation between injections – where chlo- rine is used to provide instant destruction of bacteria – is pivotal.
At time of vaccination there should be a maxi- mum of 1-2 percent pip- ping eggs, with a target of 0 percent.
Vaccine specifications
(02) 9898 1800
sales@HydroInnovations.com.au www.HydroInnovations.com.au
“The retraction of the injection needle initiates the sanitation cycle, with chlorine bathing both the exterior of the needle and the small holes in the punch,” he said.
“Therefore, the pump- ing system that handles that vaccine must be gen- tle.
Site of injection
“We must be able to pump from the bag through the pumping sys- tem and down through the needle into the em- bryo, and this is a very, very fragile type of vac- cine.”
While there are five compartments within the egg at the time of vac- cination, only two – the embryo and amnion – are effective sites for vaccine delivery.
A synchronised dia- phragm-driven pumping system helps ensure safe and effective delivery of a specified amount of vaccine, while maintain- ing integrity from the bag to the needle.
The other sites – al- lantois, yolk and air cell – don’t allow for the em- bryo to be exposed to the antigen correctly, with evidence that the Marek’s disease vaccine delivered only to the embryo body or amniotic fluid results in excellent protective immunity.
Additional factors to consider for in ovo vac- cination include under- standing which vaccines aren’t compatible, such as herpesvirus of turkey and HVT vectors, onset and duration of immunity, the nature of the disease challenge and maternal antibodies.
In developing in ovo vaccination equipment, researchers considered not only the need to de- liver vaccine in the cor- rect site but also appro- priate timing.
“All of these factors come together to give you an optimal look at your process when you’re vaccinating in ovo,” Dr Williams said.
Page 10 – National Poultry Newspaper, October 2021
The window or the tim- ing for vaccination is ap-
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