Effects of Saccharification Corn Straw on Growth Performance, Nutrient Metabolic Rates, Organ Indices, Serum Indices and Intestinal Microflora of Broilers
WANG Ping1, CHANG Juan1, LIU Chaoqi1, YIN Qingqiang1, SHAO Shuan1, SUN Guibin1, DANG Xiaowei2, GAO Tianzeng3
1. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
2. Henan Delin Biological Products Co., Ltd., Xinxiang 453000, China;
3. Henan Guangan Biotechnological Co., Ltd., Zhengzhou 450001, China
Abstract：This study was conducted to investigate the effects of saccharification corn straw (SCS) on growth performance, nutrient metabolic rates, organ indices, serum indices and intestinal microflora of broilers. A total of 250 healthy one-day-old female Arbor Acres (AA) broilers were randomly divided into 5 groups with 5 replicates per group and 10 broilers per replicate. Broilers in the basal diet group were fed a basal diet, and the others in the experimental were fed the diets which supplemented with 4%, 8%, 12% SCS and 8% SCS (high oil) replaced partial energy feed, respectively. The experiment lasted 21 days. The results showed as follows:1) the average daily feed intake of 8% SCS (high oil) group was significantly higher than that of 8% SCS group (P<0.05), the final weight and average daily gain of 8% SCS group and 12% SCS group were significantly lower than those of basal diet group (P<0.05), and the feed to gain ratio of 8% SCS group, 12% SCS group and 8% SCS (high oil) group was significantly higher than that of basal diet group and 4% SCS group (P<0.05). 2) The dietary metabolic energy of 8% SCS (high oil) group was significantly higher than that of other groups (P<0.05), the energy metabolic rate of 12% SCS group was significantly lower than that of basal diet group and 4% SCS group (P<0.05), the crude protein metabolic rate of 4% SCS group was significantly higher than that of other groups (P<0.05), and the calcium metabolic rate of 4% SCS group was significantly higher than that of basal diet group (P<0.05). 3) The liver index of 8% SCS group was significantly higher than that of other groups (P<0.05), the proventriculus index of 12% SCS group was significantly lower than that of 8% SCS group (P<0.05), and the cecum index of 4% SCS group was significantly lower than that of 8% SCS group and 12% SCS group (P<0.05). 4) The serum alkaline phosphatase activity of 12% SCS group was significantly higher than that of other groups (P<0.05), the contents of uric acid, urea, total protein, albumin and total bilirubin in serum of 8% SCS group were significantly higher than those of 8% SCS (high oil) group (P<0.05), and the serum total superoxide dismutase activity of 8% SCS (high oil) group was significantly lower than that of other groups (P<0.05). 5) The ileum Escherichia coli number of 4% SCS group, 8% SCS group and 12% SCS group was significantly lower than that of basal diet group and 8% SCS (high oil) group (P<0.05). In conclusion, dietary 4% SCS has no significant effects on growth performance, most nutrient metabolic rates, organ indices, serum biochemical and antioxidant indices of broilers, significantly decrease the ileum Escherichia coli number. Diets adding 4% SCS replacing partly energy feed for broilers during 1 to 21 days of age is feasible.
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