Skip to Content Skip to Navigation

Could reduced crude protein (CP) diets reduce NH3 emission by 25% in chicken or pig farms? In today’s Animal Nutrition Insights, Redox’s Animal Nutritionist Dr Yumin Bao shares his research on amino acids and feed enzymes supplementation that could help to reduce the environmental impacts of poultry and pig production.

Poultry and swine farming has a significant environmental impact on climate change and air or water pollution. In the past decade, phytase, a feed grade enzyme, has been widely used in poultry and swine production to reduce inorganic phosphorus usage and pollution significantly. 

In recent years, the poultry and pig industry has successfully developed reduced crude protein (CP) diets by supplementing unbound crystalline L-LysineL-MethionineL-ThreonineL-tryptophanL-ValineL-Isoleucine and L-Arginine, but not compromising chicken and pig performance. It is estimated that each 10 g/kg CP reduction in pig farms could reduce NH3 by 10%, and in poultry, each 15 g/kg CP reduction might reduce NH3 by 16% (Cappelaere et al., 2021). 

Based on recent broiler chicken studies at the University of Sydney, apart from L-Lysine, L-Methionine and Threonine, L-Valine, L-Isoleucine, and L-Arginine are added to broiler chicken diets could further reduce CP by 15g/kg.        

However, it is noticed that in the current CP reduction strategy, feed formulation was conducted by digestible lysine concentration and then balanced with other digestible amino acids, and undigested CP was not considered in the feed formulation. 

It is well-known that adding exogenous feed enzymes in poultry and swine diets could overcome the adverse effects of antinutritional factors and improve the digestion of dietary nutrients. 

While Xylanase is becoming a norm in Australian wheat-based diets to reduce digesta viscosity in chicken or pig gut, adding Protease and Mannase has recently been demonstrated to improve dietary amino acids digestibility by 3% and increase chicken body weight gain by 5%, respectively. 

reduced crude protein diets

Body weight gain in response to Dig AME ratio

Therefore, under the current commercial conditions, adding protease and mannase could reduce Digestible Lysine concentration from 1.1% to 1.0% in the finisher period, roughly another 10-15 g/kg CP reduction. 

In conclusion, in the current poultry and swine diets with supplementation of L-Lysine, L-methionine and L-Threonine, further adding L-Valine, L-isoleucine, L-Arginine, protease, and mannase could reduce at least 25 g/kg CP and accordingly reducing NH3 emission by 25% in chicken or pig farms.

Contact us today and ask us how we can assist with specialist advice from one of our nutritionists and offer the best price and service on any of the below products:

Back to all News

Posted 1 Jul in Chemicals

Hydrochloric Acid – Handle with care

Did you know that Hydrochloric Acid is also known as HCL, muriatic acid, or spirits of salt? It’s utilised in a variety of industrial and commercial settings. For those who work in industries that use this chemical, it’s vital...

Posted 24 Jun in Food and Beverage

Dextrose – sweetener, preservative and neutraliser

Dextrose is the name of a simple sugar mainly derived from grains such as corn or root plant. Find out how Redox can become integral to your Dextrose sourcing strategy. What is Dextrose & how is it used? Dextrose is used in many...

Posted 10 Jun in Human Health

Menthol Crystals – well-being the natural way

Mint has been rumoured to have been in use across Japan for more than 2000 years, alleviating fever symptoms, headaches and re-energising both the body and the mind. In the west, we’ve come to appreciate these same effects. Mentha...

Redox opens up a world of opportunity giving you access to more than 850 of the world's best manufacturers.

BASF
Evonik
DSM
DOW Chemicals
ANSAC
Cargill
BestAmino
Chemours
Aromtech
ICL Fertilizers
Eni
AB Biotek
Chemtura
Jacobi
Maurivin
Natural Soda
ETiMADEN
Dutch Plantin
Herba Ingredients
Uvasys
FumeiPharm
CJ Cheiljedang
Aliphos
ClimaxMolybdenum
P&G Chemicals
JKP Nutrition
Prayon
Rianlon
Carus
JIURICHEM
GK
Shell
Laiyu
Sumitomo Chemical
UNID
Sterokem
RheinChemie
United Initiators
Synthite
SCG Chemicals
Medichem
CSPC
Buckman
Pall Water
20 Microns
Scientex