The present application discloses a
feed additive and preparation method for promoting intestinal health of
livestock and poultry, which comprises the following steps: S1, adding water to
montmorillonite and
sodium chloride, stirring evenly to form a suspension
slurry with a concentration of 10% to 20%, sodiumizing at
room temperature, and re-forming the
slurry with water to a concentration of 15% to 40%; S2, slowly adding
cetylpyridinium chloride to the
slurry of step S1 under stirring, and continuously stirring at
room temperature for a certain time; S3, slowly adding
carvacrol to the slurry of step S2 under stirring, and continuously stirring at
room temperature for a certain time; S4, dehydrating the reaction solution of step S3, and
drying the obtained
filter cake; the dried
filter cake needs to be inspected to see if it is completely dried; S5, crushing to obtain a
feed additive for promoting intestinal health of
livestock and poultry. Adding 0.1% of the
feed additive for promoting intestinal health of
livestock and poultry to the diet of laying hens can increase the egg
production rate of laying hens by 1.5 percentage points, effectively control spotted eggs, and increase the qualified egg rate by 2 percentage points.