两种阶段育肥法对生长肥育猪粪氮磷排放量的影响  

Fecal N and P of Pigs at Final Growth Stage under Different Feeding Programs

作　　者：刘景[1] 缪伏荣[1] 方桂友[1] 叶鼎承[1] 董志岩[1] LIU Jing;Miao Fu-rong;FANG Gui-you;YE Ding-cheng;DONG Zhi-yan(Institute of Animal Husbandry and Vetarinary Medicine Research,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350003,China)

机构地区：[1]福建省农业科学院畜牧兽医研究所

出　　处：《福建农业学报》2019年第6期678-683,共6页Fujian Journal of Agricultural Sciences

基　　金：福建省科技计划项目——省属公益类科研院所基本科研专项(2016R1022-4、2017R1023-2);福建省农业科学院科研项目(A2017-12)

摘　　要：【目的】比较研究两种阶段肥育法对生长肥育猪粪氮和粪磷排放量的影响。【方法】选用平均体重19.5±1.6kg的杜长大三元杂交生长猪72头,随机分为2个组,每组6个重复,每个重复6头猪,对照组采用“三阶段”育肥法,三阶段划分为:20~50、50~80、80~120kg,试验组采用“五阶段”育肥法,五阶段划分为:20~35、35~55、55~75、75~95、95~120kg。【结果】结果表明,两种阶段育肥法饲粮氮、磷表观消化率相近;与“三阶段”育肥法相比,“五阶段”育肥法生长肥育猪全期饲粮氮总摄入量减少5.17%(P<0.05),饲粮磷总摄入量减少8.79%(P<0.05),粪氮排放量减少6.10%(P<0.05),粪磷排放量减少8.64%(P<0.05)。【结论】采用“五阶段”育肥法,能显著降低生长肥育猪饲粮氮、磷摄入量和粪氮、磷排放量,具有良好的生态环境效益。【Objective】The N and P in the excretion of pigs at final growth stage fed under two different feeding programs were compared for forage utilization and ecological effect on the environment.【Method】A total of 72 growing Duroc×Landrace×Yorkshire pigs weighing 19.5±1.6 kg were randomly divided into two groups with 6 replicates of 6 pigs each.The groups were fed under two different programs:a 3-phase-feeding at 20-50 kg,50-80 kg,and 80-120 kg pig weight stages or a 5-phase-feeding at 20-35 kg,35-55 kg,55-75 kg,75-95 kg,and 95-120 kg pig weight stages.The fecal N and P of the pigs were determined for the analysis.【Result】 The variation on feeding program did not cause significant difference on the apparent N and P digestibility of the pigs.On the other hand,comparing to the 3-phase-feeding,the pigs under the 5-phase-feeding program showed significant reductions of 5.17% on total dietary N intake ( P <0.05) and of 8.79% on P ( P <0.05),as well as of 6.10% on fecal N ( P <0.05) and of 8.64% on fecal P ( P <0.05).【Conclusion】Feeding the pigs at final growth stage on the 5-phase program reduced the forage consumption and also the N and P in excretion of the animals resulting in financial as well as ecological benefits.

关 键 词：五阶段育肥法 三阶段育肥法 猪粪氮磷排放量 生长肥育猪 

分 类 号：S828.5[农业科学—畜牧学]