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作 者:刘长忠[1] 何瑞国[1] 毛宗林[1] 张碧绿 张毅[3] 向枭[3]
机构地区:[1]华中农业大学动物科技学院,湖北武汉430070 [2]湖北省天门市畜牧局,湖北天门431700 [3]西南大学动物科学系,重庆荣昌402460
出 处:《中国兽医学报》2007年第6期914-918,共5页Chinese Journal of Veterinary Science
基 金:国家科技部科技攻关项目(99-022-02-03);湖北省特色农产品加工及产业化研究与开发专项(2005AA205A08)
摘 要:以500只29日龄生长鹅为试验动物,以砻糠和玉米秸秆为主要纤维源,进行28 d的饲养试验,研究日粮在等能量等蛋白水平下,不同粗纤维(crude fiber,CF)水平(3%、5%、7%、9%和11%)对鹅生产性能、代谢激素和血清生化指标的影响。结果表明:随着日粮粗纤维水平的增加,生长鹅的日采食量呈增加的趋势,但各处理组间差异不显著(P>0.05),饲料转化率和日增重呈先增加后减少的趋势(P<0.05);5%CF组与7%CF组生长鹅的生产性能最佳,与11%CF组相比,日增重分别提高了22.60%与24.25%(P<0.05),饲料转化率分别改善了22.65%与21.74%(P<0.05);日粮粗纤维水平对生长鹅血清中血糖(GLU)、碱性磷酸酶(ALP)、生长激素(GH)和IGF-I有显著影响(P<0.05),而对尿酸(UA)、总蛋白(TP)、谷丙转氨酶(ALT)、谷草转氨酶(AST)、胰高血糖素(GLU)、胰岛素(INS)、促甲状腺素(TSH)、三碘甲状腺原氨酸(T3)和甲状腺素(T4)均无显著影响(P>0.05)。Five hundred, aged 29 days,growing geese as experimental animals, rice hull meal and corn stalk meal as the main sources of fiber,were used to do 28-day feeding experiment to explore the effect of diets containing different crude fiber levels (3%,5%,7%,9%,11%) with equal energy and protein on production performance ,metabolic hormone and blood biochemical index of geese. The results showed that :with the crude fiber levels incr easing,ADFI was on the rise, but the difference is not significant (P〉0. 05), feed conversion rate and ADG was on the rise first and then decreased (P〈0. 05);5%CF and 7%CF group gained the best production performance,compared with 11%CF group,ADG increased by 22. 60% and 24. 25% respectively (P〈0.05),and feed conversion rate improved by 22.65% and 21.74% respectively (P〈0. 05);further increase of dietary crude fiber exhibitsed significant effect on serum indexes including glucose (GLU),alkaline phosphatase (ALP),growth Hormone (GH) and IGF-I (P〈0. 05) ,but no significant effects on urea aeid(UA) ,total protein(TP) ,glutamate pyrurate transaminase (ALT), glu tamic oxaloacetic transaminase (AST), glucagon (GLU), insulin (INS), thyroid stimulating hormone (TSH),triiodothyronine (T3) and thyroxine (T4) (P〉0. 05).
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