A feed additive for improving the reproductive performance of breeding ducks

Abstract

The invention discloses a feed additive for improving the reproductive performance of breeding ducks. The feed additive uses mineral-derived fulvic acid, bile acid, taurine, mineral zinc, compound enzymes, and probiotics as core raw materials, and uses zeolite powder as a carrier. The feed additive is directly added into the feed to feed the breeding ducks. It is proved by experiments that it can prolong the laying period, maintain a high laying rate and control the egg weight, thereby improving the reproductive performance of the breeding ducks.

Description

technical field [0001] The invention belongs to the field of animal nutrition and relates to a feed additive, in particular to a feed additive for improving the reproductive performance of breeding ducks. Background technique [0002] The number of eggs laid and the weight of breeding ducks are two important factors affecting their reproductive performance. The number of eggs laid is affected by the length of the egg production period and the egg production rate. When the egg production rate is high and the egg production period is long, the number of eggs obtained by the breeding duck farm will be more, indicating that the breeding duck has strong reproductive performance; The more eggs whose egg weight meets the standard egg weight (90-95 grams) during the laying period, the higher the hatching rate, which means the better the reproductive performance. Therefore, prolonging the egg production period, maintaining a high egg production rate, and controlling egg weight are i...

AI Technical Summary

Problems solved by technology

[0003] Artificial forced moulting is currently a common method to prolong the breeding time of ducks and improve their reproductive performance. However, the egg weight in the second laying period of this method is relatively large, and the eggshell quality is not as good as that in the first laying period. The adoption of this approach is affected by market conditions

[0004] After 50 weeks of production, the egg weight of breeding ducks has exceeded the requirements of the best qualified breeding eggs, the quality of eggshells begins to decline, and the number of sand-shell eggs increases. Studies have shown that these changes will reduce the hatchability by 1%-2%. Breeding duck farm managers often take the method of limiting feed intake while supplementing calcium and phosphorus to reduce the protein intake of breeding ducks and increase calcium and phosphorus intake to control egg weight and eggshell quality based on experience, but this method will reduce breeding ducks. The intake of energy and other nutrients of ducks will reduce the number of eggs laid, which will lead to a decrease in the reproductive performance of ducks

Lu Guirong (2010) adjusted the egg weight by reducing the energy protein level of feed in the later stage. As a result, the egg weight decreased by 3.6 grams, the qualified rate of breeding eggs increased by 0.5%, the hatching rate increased by 0.66%, and the egg production rate increased by 0.5%. This method accelerates the aging of the physiological functions of the breeding ducks and reduces the utilization time of the breeding ducks. It can be seen that these two egg weight control methods are not ideal

In short, there is a lack of practical techniques for prolonging the laying period of breeding ducks and controlling egg weight in production

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