A: Hello! Blood in eggs is mainly caused by bone (pubic bone) dysplasia in growing period, followed by intestinal inflammation and secondary salpingitis caused by coccidia and Escherichia coli. Small eggs are mainly due to low weight, insufficient intake of protein (low protein content, low intake due to high room temperature, amino acid imbalance, intestinal digestion and absorption disorders, etc. ). There are many reasons that affect the green of laying eggs: chicks, management, chicken diseases, environment, feed, especially brooding, breeding, starting, peak weight and uniformity are not up to standard, feed nutrition level is low, especially metabolic energy level is not up to standard (500g/ ton of meimei enzyme can be added), and the room temperature caused by poor ventilation is too high, which will lead to a decrease in food intake, affect egg weight and laying rate, and add microecology. Please check the measures to increase eggs in the column of this website (at the bottom left of the home page). (Ren Chun Qing, online expert of China Poultry Disease Network)