Effects of Chaizhukangjisan on Growth Performance and the Levels of Stress Related Hormones of Serum in Early-Weanling Piglets

To study the effects of Chaizhukangjisan on growth performance and the levels of stress related hormones of serum in early-weanling piglets,48 'Duroc×Landrace×Yorkshine' crossbred early-weanling piglets in(28±2) day age were randomly divided into 4 treatments of 12 piglets each,with three replicates in each group and 4 piglets in each replicate,and fed with basal diet,basal diet plus 1%,2% and 3% Chaizhukangjisan respectively.The experiment lasted for 28 d.The results showed that adding 2% or 3% Chaizhukangjisan could significantly improve the average daily gain and the average daily feed intake of weanling piglets(P0.05),significantly decrease the ratio of feed to gain(P0.05) and post weanling diarrhea rates(P0.01),significantly decrease the level of serum COR in the age of 35 and 56 d,and significantly improve the levels of Serum GH,INS,T4 and GAS in the age of 35 and 56d.Chaizhukangjisan could efficiently relieve the weanling stress on piglets.In production practice,adding 2% Chaizhukangjisan in basal diet could obtain the best effect.