The application provides a
feed additive and application thereof. The
feed additive comprises the following components in parts by weight: 20-30 parts of flaxseed, 10-20 parts of perilla seed, 1-2 parts of
choline, 0.05-0.15 parts of
vitamin E, 0.1-0.2 parts of
zinc sulfate, 0.01-0.05 parts of nicotinic acid and 48-68 parts of wheat
bran. The
feed additive and the feed containing the feed additive provided by the application are used for 6-13 month old non-pregnant cows, the
mammary gland development of the cows in puberty is intervened, the growth of the
mammary gland fat pad in the period is promoted, the growth and development of the
lactiferous duct in the
gestation period are provided with a material basis, the number of the
lactiferous duct and the
acinus is increased, and thus the initial number of the mammary epithelial cells in the
lactation period is increased, and the peak
milk yield of the cows after delivery is improved.