Page 16 - Australian Pork Newspaper

Zinc oxide in piglet diets
WELCOME to the first issue of the An- imine series of articles to review scientific lit- erature on the effects of pharmacological dosage of zinc oxide in weaned piglets’ diets.
proper supplementation of the potentiated zinc source – HiZox.
Effect of dietary zinc oxide concentration on blood zinc levels
served a high concen- tration of zinc in the blood of piglets.
capacity of piglets is bypassed, increasing the blood zinc concen- tration.
In the European Union, medicated zinc oxide will be totally banned from June 2022.
Out of 151 publica- tions on pharmacolog- ical use of zinc oxide in weaned piglets, 38 con- taining data on blood zinc concentration at the end of the study were selected for the purpose of this review.
An increase on blood zinc levels – from 0 to 1.3mg/L with higher zinc oxide supplemen- tation dosages from 200-500mg/kg – was also observed in a dose- response behaviour.
This might be related to weaning age and in- dividual feed intakes.
It is interesting to note that also abroad there is a growing number of countries following this tendency, such as China, where the sup- plementation of phar- macological levels of zinc oxide is already restricted.
As shown on Figure 1, a zinc supplementation below requirements – estimated to be at 100mg/kg – lead to low blood zinc levels.
The supplementation of zinc oxide from 500 up to 1500-2000mg/ kg zinc in the complete feed seems to reach a plateau on blood levels, maintaining homeo- static regulation and buffering excess dietary zinc.
The higher the zinc oxide supplementation is, the higher the feed consumption will be – resulting in a greater risk of piglet toxicity due to bypassed homeo- static regulation.
Pharmacological dosage of zinc oxide is well known for its effect on diarrhea reduction and improved weight gain of weaned piglets.
Though the majority of the observations in- dicated a low level of zinc in the blood in this range, some trials ob-
When the zinc sup- plementation exceeds 2000mg/kg zinc, the homeostatic regulation
If you have any que- ries, contact either Stuart Wilkinson on stuart.wilkinson@ feedworks.com.au or 0414 487 882 or David Cadogan on david.cadogan@feed works.com.au or 0409 049 793.
However even after decades of use, there is still no consensus on its modes of action.
An exhaustive litera- ture review was per- formed from the An- iLib database.
This could be due to a high zinc status at weaning from the in- take of zinc-rich creep feed before weaning.
At such high levels, also observed was a higher variability of blood zinc concentra- tions.
This series of articles will review existing sci- entific literature, with a particular focus on its key effects and mecha- nisms.
It will also be inspired from the latest out- comes from the ZinCo- Supp research network, supervised by Animine.
This ambitious scien- tific program involving several renowned uni- versities addresses the suppression of phar- macological zinc oxide while studying the
Figure 1: Blood zinc concentration in piglets feed, different dietary zinc content for two weeks post weaning.
PorkStar returns after a pandemic-induced hiatus and has kicked off activities by spon- soring the Chef of the Year award at the Gourmet Traveller 2022 Restaurant Awards.
PorkStar returns
PORKSTAR, the chef- influencer marketing program at Australian Pork Limited, returns to in-person events and acti- vations this month after a hiatus due to COVID-19 lockdowns and pandemic restrictions on hospitality and events.
finest restaurants and es- tablishments.
sessions, a successful re- sult after the events of the past two years prevented special dinner experiences in Melbourne.
PorkStar is the connector between new industry in- novators and pork know- ledge, armed with the task of elevating pork in peo- ples’ minds.
Taking these hospitality innovators directly to the source of the product pro- vided new inspiration for their venues.
Soi38 executive chef Terry Intarakhamhaeng will share a menu of sea- sonal recipes that have been gathered from re- gional and remote areas of Thailand, ethnic minority groups and hill tribes.
Having an ongoing part- nership with magazine publication Gourmet Trav- eller, activity kicked off in support of the resilience, creativity and excellence of Australia’s best restau- rants.
A resulting dish ideated from this trip – a cold roast pork using Duroc pork with complementary beverage.
This follows Terry’s recent guest spot on The Crackling – a food podcast hosted by Anthony Huck- step in conversation with Australia’s best chefs, ar- tisan producers, butchers and pork producers.
PorkStar sponsored the coveted Chef of the Year award at the 2022 Res- taurant Awards, hosted at Gimlet at Cavendish House in Melbourne.
Supporting the launch of the Melbourne Food and Wine Festival – tasked with encouraging pa- trons back to dining out in Melbourne, particu- larly the usually bustling central business district – PorkStar celebrated with pork on the menu for the opening night festivities.
The podcast has had over 100,000 listens and continues to spread the word of pork and the end- less opportunities it can offer.
Things are happening again – filming more con- tent in the field and sup- porting pork on the menu at some of Australia’s
Local Adrian Rich- ardson returned his suck- ling pig feast to sold-out
Lylle Blackstock APL Public Relations Manager
PorkStar also took fast- rising star chef Nicholas Hill of NSW restaurant Porcine and P&V Wine + Liquor Merchants founder Mike Bennie to Dewsbury Pork and Pig Stud to see the mighty Duroc and Hampshire breeds.
The national series of PorkStar events will re- turn in May, with events confirmed for Adelaide and Perth.
Come join us!
PIX AMC Pork Production Conference Gold Coast Convention and Exhibition Centre https://pixamc.com.au/registration
Sunday, 15 May 2022
Exhibition and trade displays
Monday, 16 May 2022
Session 1: Social License and the Future of Pig Farming in Australia
Pork production in Australia – What will the next 5, 10 and 20 years look like? Dr Robert van Barneveld, SunPork Group The new NZ Model Code for Pigs – What’s changed? NZ Pork
Are farrowing crates defendable? Producer Panel discussion.
Session 2: Are We Ready for ASF?
Biosecurity preparedness – Did we learn anything from COVID-19? Dr Kirsty Richards, SunPork Group
ASF in feral pigs - Spread modelling suggests it may be manageable? Dr Richard Bradhurst, CEBRA, University of Melbourne
Pork Production Conference Dinner
Tuesday 17 May 2022
Session 3: Understanding our Markets
Global pork markets and trade outlook. Brett Stuart, Global AgriTrends
Session 4: Practical Science and Pig Production
Global R&D round-up. Dr Roger Campbell, RG Campbell Advisory
What’s more important, extra pigs per litter or heavier carcasses? Kenton Shaw, SunPork Group Building a pig shed – here’s what it will need to look like. Marcus Jones, Stockyard Industries
Session 5: Consumer Trends
Consumer trends coming our way, what does this mean for Australian pork? Prof David Hughes, Imperial College London Plant proteins - hot air or a market disruption we will have to deal with? Dr Paul Higgins, Emergent Futures
Page 16 – Australian Pork Newspaper, April 2022
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