原料膨化和饲料调质制粒对肉兔生长性能、血清生化指标和屠宰性能的影响  

Effects of Raw Material Extrusion and Conditioning on Performance,Serum Biochemical Indices and Slaughter Performance of Meat Rabbits

作　　者：蔡景义[1] 廖阔遥 田刚[1] 陈德林 贾刚[1] 徐君[2] CAI Jingyi;LIAO Kuoyao;TIAN Gang;CHEN Delin;JIA Gang;XU Jun(Animal Nutrition Institute,Sichuan Agricultural University/Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education,Chengdu 611130,China;Chengdu Agricultural College,Chengdu 611130,China)

机构地区：[1]四川农业大学动物营养研究所/动物抗病营养教育部重点实验室,成都611130 [2]成都农业科技职业学院,成都611130

出　　处：《四川农业大学学报》2020年第3期340-345,共6页Journal of Sichuan Agricultural University

基　　金：四川省教育厅自然科学基金重点项目(18ZA0383)。

摘　　要：【目的】选择肉兔颗粒饲料生产适宜加工方式,研究原料膨化和饲料调质制粒对肉兔生长性能、血清生化指标和屠宰性能的影响。【方法】试验采用2×2两因子设计,原料加工为膨化和未膨化,饲料调质制粒分为蒸汽调质制粒和无蒸汽调质制粒。选择体重相近的104只伊高乐肉兔(918.46 g±6.83 g)随机分配到4个组(每组13个重复,每个重复2只)。试验期35 d。【结果】①原料膨化显著提高肉兔前期(1~14 d)的平均日增重(ADG)达17.17%(P<0.05),降低料重比(F/G)达16.01%(P<0.05)。蒸汽调质对肉兔生产性能无显著性的影响(P>0.05)。原料膨化且蒸汽调质组肉兔健康风险指数(HRI)显著低于原料未膨化但蒸汽调质组达64.71%(P<0.05)。原料膨化和蒸汽调质对试验后期(15~35 d)生产性能无显著影响(P>0.05)。②原料膨化和蒸汽调质处理显著提高肉兔血清总蛋白含量(P<0.05),对血清血糖、甘油三酯和总胆固醇的含量及碱性磷酸酶酶活无显著影响(P>0.05);膨化显著降低血清尿素氮含量(P<0.05)。③原料膨化和蒸汽调质对肉兔全净膛屠宰率、半净膛屠宰率,背最长肌中干物质、灰分和蛋白含量均无显著影响,也无互作效应(P>0.05)。【结论】原料膨化改善了饲料蛋白的利用,提高了肉兔断奶后前期生长性能;蒸汽调质制粒可提高饲料蛋白利用,但对肉兔生长性能和屠宰性能无影响。原料膨化且蒸汽调质制粒是兔料生产适宜加工方法。【Objective】The study aims to investigate the effects of raw material extrusion and steam conditioning on the growth performance,serum biochemical indices and slaughter performance of rabbit,and to provide a reference for suitable processing methods of meat rabbit feed.【Method】2×2 factor design was used in this experiment.Four experimental treatments were carried out with two raw material extrusion(extruded and no extruded popping,respectively)and feed conditioning(steam-conditioning and no steamconditioning process,respectively)under the same feed formulation.One hundred and four Hycole rabbits(918.46 g±6.83 g)were randomly assigned to one of four treatment groups,with thirteen replicates in each group and two rabbits in each replicate..The experimental period lasted for 35 d.【Result】The results showed as follows:①The average daily gain(ADG)and the feed/gain(F/G)of meat rabbits in the group of extruded raw materials were increased by 17.17%(P<0.05)and decreased by 16.01%(P<0.05)than those in no extruded raw materials group for phase 1(1-14 d),respectively.The growing performance of meat rabbits for all stages showed no significant differences between the steam conditioning group and no steam conditioning process group(P>0.05).The health risk index(HRI)of rabbits in the extruded raw material and steam-conditioning process group was significantly lower than that in the no extruded raw material but steam-conditioning process group(-64.71%)(P<0.05).Both extrusion of raw materials and steam conditioning had no significant effect on the growing performance in the later period(15-35 d)(P>0.05).②The extrusion of raw materials and steam conditioning significantly increased the serum total protein content(P<0.05),and the content of serum urea nitrogen was lower in rabbits of the extruded raw material group than that of no extruded popping group(P<0.05).While the other serum biochemical indices,such as blood glucose,triglyceride,total cholesterol and alkaline phosphatase,did not have significant difference

关 键 词：挤压膨化 调质 肉兔 生长性能 血清生化指标 屠宰性能 

分 类 号：S829.1[农业科学—畜牧学]