[ASC-media] 'A Taste Of Success From Moore Work On Boar Taint' -- Pork CRC Media Release

Brendon Cant brendon at iinet.net.au
Wed Mar 11 23:44:08 PDT 2015


Pork CRC Media Release -- March 12, 2015 

 

A Taste Of Success From Moore Work On Boar Taint

 

Pork CRC research into the performance and eating quality of entire male
pigs and those immunised against gonadotropin releasing hormone (GnRH),
using ImprovacT, has revealed that androstenone and skatole, the compounds
linked to boar taint, were significantly higher in the belly fat of entire
males than in immunised males.

 

The study, by PhD candidate Karen Moore of WA Department of Agriculture and
Food, also showed that androstenone was higher in entire male pigs grown out
to heavier live weights (107kg v 74 kg).

 

While no entire male pigs slaughtered at lighter weights had androstenone
levels above the sensory threshold (>1.0 ug/g), 18 per cent of those grown
to heavier weights did. 

 

In contrast, 18pc of light weight and 33pc of heavy weight entire males had
belly fat skatole levels exceeding the sensory threshold for skatole (>0.2
ug/g). Of pigs fed adlibitum, 38pc and 43pc of light and heavy entire males
had skatole levels above the sensory threshold.

 

No immunised male exceeded the sensory threshold level for androstenone and
only one heavy immunised male exceeded the sensory threshold level for
skatole.

 

Consumer perceptions of eating quality of the loin steak reflected
differences in boar taint compounds, with the percentage of steaks ranked by
consumers as unacceptable, or below average, being 29pc for entire and 20pc
for immunised males.

 

When asked about their repurchase intention, 39pc of respondents ranked the
loins from entire males as "definitely would not repurchase or unlikely to
repurchase". The corresponding percentage for the loin from immunised males
was 27pc.  

 

According to Ms Moore, the results confirm immunisation against GnRH
effectively reduces the incidence of boar taint, but slaughtering entire
male pigs at light weights and at very light weights (64-73 kg) does not.  

 

"Clearly, improving the eating quality of pork requires a more proactive
approach to managing androstenone levels and especially skatole levels in
carcase fat," she said.

 

Immunising against GnRH had previously been shown to eliminate boar taint,
provided pigs were not sold within two weeks of the second vaccination. 

 

Ms Moore is now working on strategies to minimise the decline in feed
efficiency and increase in back fat thickness that occurs in immunised males
about three weeks following the second vaccination with Improvac.

 

 <http://www.porkcrc.com.au> www.porkcrc.com.au

Boar Taint.docx/RC120315

Authorised by Pork CRC and issued on its behalf by 

Brendon Cant, Mob 0417 930 536.

MEDIA CONTACT:
<mailto:roger.campbell at porkcrc.com.au?subject=Media%20Release> Dr Roger
Campbell, Pork CRC CEO, Mob 0407 774 714.

 

 

Brendon Cant

Communications Manager

Tel +61 8 9430 9463

Mob +61 417 930 536

 <http://www.porkcrc.com.au/> 

CRC for High Integrity Australian Pork

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