Effects of Different Floor Types on Growth Performance, Nutrient Apparent Digestibilities and Serum Biochemical Parameters of Fattening Sheep
WANG Chao1, ZHANG Huiwen2, ZHAO Juanjuan1, CHE Dalu1, ZHAO Shoupei1, ZHANG Weitao3, LI Xuemei1, FU Yanfang3, GAO Yuhong1
1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071001, China;
2. Technology and Education Station of Chengde Agricultural Bureau, Chengde 067000, China;
3. Animal Husbandry Station of Hebei, Shijiazhuang 050035, China
Abstract：The purpose of this study was to investigate the effects of different floor types on growth performance, nutrient apparent digestibilities and serum biochemical parameters of fattening sheep. A total of 135 healthy small-tailed sheep at the late fattening stage with similar weight were randomly divided into 3 groups with 3 replicates per group and 15 sheep per replicate. The floor types of 3 groups were solid earth floor (solid group), cement slatted floor (slatted group) and cement slatted floor blocked by cotton curtains (blocked-gap group). The experiment lasted for 28 days. The results showed as follows: 1) the floor temperature of blocked-gap group was significantly higher than that of solid group and slatted group (P<0.05). There was no significant difference in floor relative humidity among all groups (P>0.05). 2) The feed to gain ratio of blocked-gap group and slatted group was significantly lower than that of solid group (P<0.05), and the average daily drinking water of blocked-gap group and slatted group was significantly lower than that of solid group (P<0.05), the average daily gain of blocked-gap group and slatted group was significantly higher than that of solid group (P<0.05). 3) The apparent digestibilities of neutral detergent fiber and phosphorus of blocked-gap group were significantly higher than those of slatted group and solid group (P<0.05), and the slatted group was significantly higher than that of solid group (P<0.05). The apparent digestibilities of dry matter and crude protein of blocked-gap group were significantly higher than those of solid group (P<0.05), the organic matter apparent digestibility of slatted group was significantly lower than that of blocked-gap group and solid group (P<0.05), and the calcium apparent digestibility of blocked-gap group and slatted group was significantly higher than that of solid group (P<0.05). 4) The serum growth hormone content of blocked-gap group was significantly higher than that of solid group (P<0.05), the contents of triiodothyronine and thyroxine in serum of blocked-gap group were significantly lower than those of slatted group (P<0.05), and the serum urea nitrogen content of blocked-gap group and slatted group was significantly higher than that of solid group (P<0.05). In conclusion, the cement slatted floor blocked by cotton curtains can improve the floor temperature, alleviate cold stress of fattening sheep, improve the growth performance of fattening sheep and nutrient apparent digestibilities.
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