Effects of Mucaosu on the laying performances and serum parameters in laying hens

The effects of Mucaosu(alfalfa extracts) on the laying performances and serum parameters in laying hens were studied.3600 Hy-line brown laying hens(300 days old) were randomly divided into treatment group fed with basic diet containing Mucaosu and control group fed with basic diet only,each group had six replication.The results showed as follows:(1) The egg size,laying rate,death rate in treatment and control were 58.15 g and 52.06 g,78.8% and 74.18%,1.03% and 1.09%,respectively,and their differences were significant(P0.05).(2) The daily feed consumption of each hen were 102.64 g in treatment and 105.06 g in control,and there was no significant difference(P0.05).(3) The shell thickness,the Haugh unit in treatment and control were 0.365 mm and 0.352 mm,89.50 and 80.52,respectively,and the differences were significant(P0.05).(4) The cholesterol,estradiol,calcium of serum in treatment and control were 3.20 mmol·L-1 and 3.82 mmol·L-1,25.81 ng·ml-1 and 32.23 ng·ml-1,7.141 mmol·L-1 and 6.306 mmol·L-1,respectively,the differences were significant(P0.05).There were no significant diffierence in TP,AIB,GLB,GLU,TG,HDL-C in serum between two grougs(P0.05).It was concluded that alfalfa extract adding to diet improved the performances of the laying performance and quality of eggs,increased healthy status of laying hens.