| abstract |
The invention discloses a feed additive for a ewe. The feed additive comprises the following components by mass percent: 28-32% of hawthorn powder, 28-32% of eucommia bark leaf powder, 18-22% of gynostemma pentaphylla powder, 18-22% of ginkgo leaf powder and nano-zinc oxide accounting for 1-1.5% of the total addition amount of the hawthorn powder, the eucommia bark leaf powder, the gynostemma pentaphylla powder and the ginkgo leaf powder, wherein the hawthorn powder comprises hawthorn pulp powder and hawthorn kernel powder in the mass ratio of 3 to 1. According to the feed additive, the hawthorn powder, the eucommia bark leaf powder, the gynostemma pentaphylla powder and the ginkgo leaf powder are combined with a novel zinc source-the nano-zinc oxide capable of promoting nutrient absorption of the organism, and the mixture ratio is optimized by the functional complementation principle, so that the reproductive performance of the ewe can be improved. The feed additive does not contain antibiotics, is healthy and green, and is simple to prepare, lower in production cost and wider in application prospect. |