| abstract |
The invention discloses a method for improving the reproductive performance of sows, which comprises the step of feeding the sows with cordyceps strain fermentation products as feed additives. The invention discovers that the cordyceps strain fermented product is adopted to feed the sow, so that the litter average litter size, the litter average live litter size, the birth average weight, the 21-day-old weaned piglet size and the 21-day-old weaned litter size of the sow can be obviously improved, the oestrus interval days of the sow are shortened, the oestrus rate of the sow and the expression levels of estradiol and progesterone are improved, and the reproductive performance of the sow is improved. |