The Alltech Feeding Times Issue 36 - Winter 2021 Winter 2021 - Page 16

Fig . 1 : Harmful effects of ammonia concentrations in poultry and humans
Use Yucca schidigera extract : This component mitigates ammonia emissions from nitrogen within the feces by playing a role in binding ammonia . De- Odorase ® is derived from Yucca schigidera and has been shown to reduce blood urea and blood ammonium ions , reduce excessive nitrogen breakdown in the ceca and bind ammonia so it stays in the manure instead of being released as gas . When it is used in the feed from the time the birds are placed to the time the birds leave the barn , it can control the release of ammonia into the air .
Managing the manure once it is in the barn : Acidifying agents can be used to lower the pH of the litter ( below its usual 7.5 – 8.5 ), which will help slow down and decrease the activity of the microbes that break down the nutrients in the manure to release ammonia . Another strategy could be to use odor and moisture absorbents in the litter or manure . These absorbents , which are usually clay-based , act to either slow down the microbial activity or lower the moisture content of the litter . De- Odorase can also be used as a spray over and on manure to help control ammonia that has been released and reduce its odor . There may also be microbial and urease enzyme inhibitors that can be used to prevent the action
All these strategies , however , can be negatively affected by litter and manure accumulation , litter and manure moisture , bird type , barn temperature , disease challenges or a combination of these factors .
Poultry farm ammonia emissions from manure and ammonia gas in the barn are complex topics in the poultry industry , but with a combination of good ventilation , good barn management and a strategy for reducing ammonia gas formation , this issue can be successfully overcome at any time of the year .
Dr . Kayla Price is the poultry technical manager for Alltech Canada . She provides technical and sales support , with additional research responsibilities . Prior to joining Alltech , Price received her Ph . D . from the University of Guelph with a research focus on the environmental influence on live coccidiosis vaccine success in chickens . From this background , she gained a passion for poultry intestinal health . The poultry industry is everchanging , and she strives to share this enthusiasm with others .
16 THE FEEDING TIMES