Effects of Dietary Garlic Peel on Growth Performance,Rumen Fermentation Parameters,Serum Biochemical,Immune and Antioxidant Indices of Hu Sheep
This experiment was conducted to investigate the effects of dietary garlic peel on growth perform-ance,rumen fermentation parameters,serum biochemical,immune and antioxidant indices of Hu sheep.Thir-ty-two healthy male lambs of Hu sheep about 3.5 months of age with similar body weight[(23.85±0.41)kg]were randomly divided into 2 groups with 16 lambs in each group.The control group(CON group)was fed a basal diet,and the garlic peel group(GAP group)was fed the basal diet used 3%garlic peel instead of all wheat straw.The experiment lasted for 28 days.The results showed as follows:1)compared with CON group,dietary garlic peel significantly increased the average growth rates of body weight and chest circumfer-ence(P<0.01).2)Compared with CON group,dietary garlic peel dietary garlic peel significantly increased the rumen butyric acid(BA)ratio(P<0.05),significantly decreased the rumen isobutyric acid(IBA)ratio(P<0.05),and significantly decreased the rumen isovaleric acid(IVA)ratio(P<0.01).3)Compared with CON group,dietary garlic peel dietary garlic peel significantly decreased the serum total cholesterol(TC)con-tent(P<0.01),significantly decreased the serum triglyceride(TG)content(P<0.05),and significantly in-creased the serum total protein(TP)content(P<0.01).4)Compared with CON group,dietary garlic peel dietary garlic peel significantly increased the contents of immunoglobulin A(IgA)and immunoglobulin M(IgM)in serum(P<0.05),and significantly increased the serum immunoglobulin G(IgG)content(P<0.01).5)Compared with CON group,dietary garlic peel dietary garlic peel significantly decreased the serum malondialdehyde(MDA)content(P<0.01),and significantly increased the total antioxidant capacity(T-AOC)and activities of total superoxide dismutase(T-SOD),glutathione-peroxidase(GSH-Px),catalase(CAT)in serum(P<0.01).In conclusion,dietary addition of 3% garlic peel can improve serum biochemical indexes,enhance immunity and antioxidant capacity,increase rumen butyric acid ratio,and then improve the growth performance of Hu sheep.[Chinese Journal of Animal Nutrition,2024.36(1):406-415]