Effects Of Fermented Tea Waste On Growth Performance,Rumen Fermentation,Nutrient Digestibility And Blood Parameters Of Mutton Sheep

This experiment is mainly to study the application of fermented tea residue in the production of mutton sheep,and determine the optimum ratio of fermented tea slag to replace the mutton concentrate from fermented tea residue on growth performance,rumen fermentation,nutrient digestibility and blood metabolites,64 chickens aged 3 months and weighing 20±2.5kg and healthy in good condition were randomly divided into 4 groups.The control group was fed the basal diet,and the test group ?,the test group ?,and the test group? were replaced with 5%,10%,and 20%fermented tea slag on the basis of the basal diet,respectively.The trial lasted for 14 weeks,with a pre-feeding period of 2 weeks and a formal period of 12 weeks.The test results are as follows:(1)The test results showed that compared with the CK group,the daily gain,dry matter intake and feed-to-weight ratio of the broilers in each test group were not significantly different(P>0.05).(2)The percentages of propionate and acetate/propionic acid in rumen fluid were significantly increased in group ? and group ? compared with group CK and group ?(P<0.05).The pH and total of rumen fluid in the experimental group were compared with those in group CK.There was no significant difference in the percentage of volatile fatty acids,acetic acid,the percentage of butyric acid,the concentration of ammonia nitrogen,and the content of rumen microbial protein(P>0.05).(3)The apparent digestibility of organic matter,crude protein,dry matter,neutral detergent fiber and acid detergent fiber in the test group and CK group was not significant(P>0.05).Compared with group ?,the apparent fat of CK group and group ? Digestibility was significantly increased(P<0.05).(4)The content of HDL-C in group ? was significantly higher than that in group ? and group ?(P<0.05),but they were not significantly different from those in group CK(P>0.05);the GLOB content in group ? was significantly higher than that in group ?(P<0.05),while the difference in GLOB content between group CK,group ? and group ? was not the same.Significantly(P>0.05);the content of LDL-C,TG,TC,Glu,NEFA,TP and ALB in the sheep of each experimental group was not significantly different(P>0.05).(5)Compared with CK group,the content of IgG in serum of group ? was significantly higher than that of group CK,but there was no significant difference in the content of IgG between group ? and group ?(P>0.05).IgA and IgM of mutton sheep in each group compared with CK group.The content of TNF-?,IL-2,IL-4 and IL-6 was not significantly different(P>0.05).(6)Compared with CK group,the levels of MDA in serum of group ?,group ? and group? were significantly lower(P<0.05).Compared with CK group,the total antioxidant capacity of group ? was significantly increased(P<0.05).Compared with the CK group,there was no significant difference in the activity of GPx,T-SOD and CAT in the serum of each test group(P>0.05).(7)With the increase or decrease of the proportion of fermented tea waste replacement fine feed,the feed cost and feed weight gain cost of mutton sheep are reduced in value.In summary,replacing the proportion of mutton concentrate with fermented tea waste has no significant difference in growth performance,rumen fermentation,nutrient digestibility and blood parameters of mutton sheep,although 20%of the fermented tea waste is significantly replaced.The digestibility of crude fat is reduced,but from the cost of feed weight gain and the growth performance of the mutton sheep,the optimum ratio of fermented tea waste to the mutton supplement is 20%.