Adding yucca extract to the feed can not only inhibit the ammonia gas in the house to reduce the odor in the house and improve the breeding environment, but also has the effect of promoting growth and improving the feed conversion rate. At present, pollution prevention and environmental protection have attracted widespread attention, and more and more attention has been paid to reducing environmental pollution caused by intensive farming.
China is a big country in the world's pig industry, accounting for about 40% of the world's breeding volume. In recent years, the rapid development of large-scale intensive aquaculture has produced a large number of feces, sewage, harmful gases and foul odors, which have caused serious pollution to the environment. If these high concentrations of manure and sewage are not properly treated, they will inevitably become a source of infection for livestock and poultry infectious diseases, parasitic diseases and zoonotic diseases. Therefore, the environmental pollution control of farms is the key to the sustainable development of China's pig industry, which is of great practical significance.
To solve the environmental pollution of pig farms, in addition to reducing the excretion of nitrogen and the treatment of wastewater after the discharge of manure and urine with nutritionally balanced diet, the odor of manure and urine can also be reduced by adding deodorants to the feed. Ammonia accounts for a large proportion of the odorous gas produced by farm manure and urine, and it and the highly toxic hydrogen sulfide have become the main odor indicator gas.
Yucca extract is a urease inhibitor, which inhibits the action of ammonia in feces and urine. Yucca extract can encourage microorganisms to use ammonia to form microbial proteins, which in turn reduces the concentration of ammonia. The decrease in ammonia level is mainly due to the increase in the utilization rate of ammonia by microorganisms, and the yucca extract promotes the reproduction of microorganisms and converts ammonia into protein, thereby reducing the concentration of ammonia.
Experimental data showed that the addition of yucca extract to the diet with a crude protein content of 16% reduced the volatilization of ammonia in the house by 488%；The addition of yucca extract to the diet with a crude protein content of 14% reduced the volatilization of ammonia in the house by 238%~33.5%。