螺旋藻多肽對首蓿發(fā)酵品質(zhì)和微生物群落的影響

打開文本圖片集

中圖分類號：S816.53 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號：1007-0435（2025）08-2685-09

Abstract：Spirulina polypeptide is a peptide molecule extracted from Spirulina，a blue-green algae. Because it contains a large amount of proteins，vitamins，minerals，antioxidants and various aminoacids，it might significantly improve the antioxidant activityand fermentation qualityof alfalfa silage.This study revealed the effects of adding diferent concentrations of Spirulina peptides on alfalfa silage quality and bacterial community.The experiment was conducted using alfalfa as raw material，and the amount of Spirulina peptide additives was set up with three gradients of 1% ， 3% ，and 5% ， respectively，three replicates were set up for each group，and the 0% amount of additives was as the control group（CK group）. The fermentation was kept at room temperature and protected from light，and the nutrient composition，fermentation quality and bacterial community were determined after 6O days of natural fermentation. The results showed that ading Spirulina polypeptide increased the contents of dry mater（DM），crude protein（CP），water soluble carbohydrates（WSC），and the content of lactic acid （Lactic acid，LA） from 2.22g?kg-1 in the control group to 5.67g?kg-1 ，and also reduced the contents of pH ，butyric acid（BA） and ammonia nitrogen （ NH3 -N），and improved fermentation quality.The application of spirulina polypeptides broadened the kinds of additives for alfalfa silage.

Key Words：Spirulina peptide;Alfalfa silage; Fermentation quality

紫花苜蓿（MedicagosatiuaL.）因其優(yōu)異的耐旱性和耐寒性、耐多次劉割性、高產(chǎn)和高營養(yǎng)價(jià)值在世界上被廣泛種植，是一種常見的青綠飼料，因?yàn)榇值鞍踪|(zhì)含量高，且富含粗脂肪、粗纖維及維生素等營養(yǎng)成分，常被用于草食動(dòng)物養(yǎng)殖中1，在我國草地畜牧業(yè)發(fā)展和生態(tài)文明建設(shè)中具有重要作用。（剩余15907字）