According to the National Agriculture Statistics Service, the United States
has an inventory of more than 62 million pigs which reside in less than 100,000
What concerns large swine producers most is the 1.5 tonnes of waste produced
by each pig at 250 pounds at the time it goes to market. The USDA claims that
waste material such as manure, urine and bedding is the single major source of
environmental damage from enclosed animal production.
To deal with the problem of ammonia, some pig industry professionals use
nature-made products such as a yucca schidigera extract product (De-OdoraseÂ®)
which can support the moderation of the ammonia supply to bacteria and help
maintain steady bacterial growth and ammonia assimilation.
A recent study was conducted by the National
University of Ireland in Galway, Ireland; and the University of Plymouth, in
Plymouth, England. It involved allocating 24 Large White crossbred pigs (12 male
and 12 female, 25-30 kg) to three dietary treatments.
The treatments consisted of a control, control plus 120 ppm De-Odorase (Y.
schidigera extract) and control plus 250 ppm De-Odorase.
For weeks 1-4, the pigs were fed a grower diet and a finisher diet from week
4 to slaughter. The diets contained 25% crude protein which was in excess of
The male pigs were removed from the test house on two occasions during the
trial and were placed in metabolism crates to allow collection of urine and
Each animal was measured for weight, weight gain, feed conversion ratios and
dry matter intake.
The researchers found that the addition of
De-Odorase to the diet increased daily liveweight gains by 52 g/day in the 120
ppm-supplemented animals. For pigs supplemented with 120 ppm De-Odorase,
decreses in urine ammonia concentrations of 12-36% were observed in both
Serum urea and ammonia tended to be lower in response to De-Odorase (120
ppm), with significant reductions in serum ammonia noted at week 6.
University of Ireland, Galway
â€¢ University of
the latest pig news, subscribe here