Effects Of Mulberry Leaf Flavonoids And Candida Tropical On Growth Performance, Slaughter Performance, Meat Quality Andblood Biochemical Index In Calves

This study was conducted to investigate the effect of dietary supplementation of mulberry leaf flavonoids on body weight, body size and digestibility of nutrient of calves. Forty-eight male calves aged 20 days were randomly divided into 4 groups with 12 in each group. A basal diet without antibiotics was used as control, and the other three groups were fed the control diet supplemented with mulberry leaf flavonoids as MLF group, supplemented with Candida tropical as CT group, supplemented with mulberry leaf flavonoids and Candida tropical as CG group. The results showed: 1)The body length of calves in CG group was significantly higher than that in CON and CT group(P< 0.05). The MLF group was significantly increased the body length index at 42,56 and 80 days of calves(P< 0.05). The CT group was significantly increased the body length index at 56 days of calves(P< 0.05). When the calves were 56 days old, the weights of them in groups MLF、CT、CG were higher than that in CON group(P< 0.05). When the calves were 80 days old, the weight of them in MLF and CG groups were higher than that in CON and CT groups(P< 0.05). 2)The NDF apparent digestibility of calves in CT group was significantly higher than that of the other three groups(P< 0.05) before the calves were weaned. The EE apparent digestibility of calves in MLF, CT and CG groups was significantly higher than that in CON group(P< 0.05) after the calves were weaned.This study was conducted to investigate the effects of mulberry leaf flavonoids on serum growth hormone and cytokines in calves. Twenty-four Holstein calves were randomly assigned into 2 groups according to body weight and age, with 12 in each group. One group was fed basal diet(CON), and the other group was fed basal diet supplemented with mulberry leaf flavonoids(MLF; 3g/d). The results showed as follows: Supplementation of MLF increased the level of serum hormone, and the growth hormone(GH), insulin(INS), insulin-like growth factor 1(IGF-1) of calves in MLF group were higher than those in CON group at 56 days of age(P< 0.05). At 56 days of age, calves in the group of MLF had higher content of IL-4 and lower content of IL-6, INF-γ, and TNF-ɑ significantly than those in CON group(P< 0.05).This study was conducted to investigate the effects of mulberry leaf flavonoids and candida tropical on slaughter performance, tissue and organ and meat quality in calves Twenty male calves were randomly divided into 4 groups with 5 in each group according to age and body weight. A basal diet without antibiotics was used as control, and the other three groups were fed the control diet supplemented with mulberry leaf flavonoids as MLF group, supplemented with Candida tropical as CT group, supplemented with mulberry leaf flavonoids and Candida tropical as CG group. The calves were all slaughtered. at age of 80 days. The results showed as follows: The antemortem live weight before slaughter and carcass weight in MLF and CT groups were improved significantly(P< 0.05). Eye musle area in MLF group was significantly higher than that in CON group(P< 0.05). Compared with CON group, rate of cooked meat was increased significantly in CG group(P< 0.05), and the PH in MLF and CG groups were increased significantly by 5.28% and 4.55%, respectively(P< 0.05). The pelage in three groups with supplemention were all increased(P < 0.05), the weights of heart were increased in MLF and CT groups(P< 0.05), the weight of liver in CG group was increased significantly(P< 0.05). The weight of spleen and lungs and the proportion of spleen in antemortem live weight before slaughter were increased in MLF and CG groups(P< 0.05). The weight of stomach, rumen and the proportion of rumen in antemortem live weight before slaughter in MLF, CT and CG groups were higher than those in CON group(P< 0.05). The proportion of rumen in stomach, weight of omasum and large intestine were higher than those in CON group(P< 0.05). The proportion of abomasum in stomach in CG group was higher than that in CON group(P< 0.05).In conclusion, the diets of calves with supplementation of mulberry leaf flavonoid and candida tropical could increase apparent digestibility of EE, NDF and ADF, improve the development of gastrointestinal tract, tissue and organ, and also the growth performance and meat quality. Mulberry leaf flavonoid coule slow the weaned stress and improve immunity of calves, which would have a better effect with candida tropical together.