中国畜牧兽医

• 动物营养与饲料科学 • 上一篇    下一篇

饲喂颗粒日粮对妊娠母羊采食和消化代谢的影响

董凌云,雒秋江,潘超,潘榕,周封文,唐秉晖   

  1. (新疆农业大学动物营养实验室,新疆乌鲁木齐  830052

  • 收稿日期:2013-11-07 出版日期:2014-06-20 发布日期:2014-07-24
  • 通讯作者: 雒秋江(1956—),男,山东人,教授,博士生导师,研究方向:反刍动物营养与饲料科学。E-mail:qjl@xjau.edu.cn
  • 作者简介:董凌云(1986—),男,四川人,硕士生,研究方向:反刍动物营养与饲料科学。
  • 基金资助:

    新疆维吾尔自治区党委农工部《农区绵羊高效养殖与示范》资助项目(201131110)。

Effect of Feeding Pellet Diets on Intake,Digestion and Metabolism of Pregnant Ewes

DONG Ling-yun,LUO Qiu-jiang,PAN Chao,PAN Rong,ZHOU Feng-wen,TANG Bing-hui   

  1. Laboratory of Animal NutritionXinjiang Agricultural UniversityUrumqi 830052China

  • Received:2013-11-07 Online:2014-06-20 Published:2014-07-24

摘要: 将16只体重约53 kg的成年小尾寒羊母羊随机分为4组,每组4只,从妊娠50 d起,分别喂给粗料型(秸秆67%)粉碎日粮(试验1组)或颗粒日粮(试验2组)和精料型(秸秆50%)粉碎日粮(试验3组)或颗粒日粮(试验4组),在妊娠前期(60~76 d)和妊娠后期(120~136 d)进行2次消化代谢试验,以研究饲喂颗粒日粮对妊娠母羊采食、消化和营养代谢的影响。结果表明,在粗料型和精料型日粮条件下,饲喂颗粒日粮时母羊的干物质自由采食量在妊娠前期和妊娠后期分别增加44.8%、58.7%、46.0%和58.5%,差异均极显著(P<0.01);干物质表观消化率在妊娠前期和妊娠后期分别降低6.2%、8.0%、6.0%和1.6%,差异均不显著(P>0.05);粗蛋白质表观消化率在妊娠前期和妊娠后期分别降低13.9%、4.8%、2.3%和3.9%,差异均不显著(P>0.05);能量表观消化率在妊娠前期和妊娠后期分别降低2.9%(P>0.05)、0.5%(P>0.05)、5.7%(P<0.05)和8.2%(P<0.01)。然而,在粗料型和精料型日粮条件下,饲喂颗粒日粮时母羊的干物质消化量在妊娠前期和妊娠后期分别增加19.7%(P<0.05)、65.8%(P<0.01)、37.0%(P<0.01)和46.3%(P<0.01);粗蛋白质消化量在妊娠前期和妊娠后期分别增加31.2%(P<0.01)、60.1%(P<0.05)、30.4%(P<0.01)和56.4%(P<0.01);总能消化量在妊娠前期和妊娠后期分别增加54.6%、105.2%、36.8%和63.8%,差异均极显著(P<0.01)。在粗料型和精料型日粮条件下,饲喂颗粒日粮时母羊的氮保留量在妊娠前期和妊娠后期分别增加74.5%(P<0.01)、101.1%(P<0.01)、44.7%(P<0.05)和73.4%(P<0.01);羔羊初生重分别提高26.3%(P<0.05)和34.8%(P<0.01)。综上所述,饲喂颗粒日粮可提高妊娠母羊的自由采食量、消化量、氮保留量及羔羊初生重,降低妊娠母羊日粮的表观消化率。因此,饲喂颗粒日粮是增加妊娠母羊营养供应的有效手段。

关键词: 颗粒; 日粮; 母羊; 采食; 消化

Abstract: 16 adult Small Tail Han ewes,with body weight of 53 kg,were randomly divided into 4 groups (n=4),the roughage-type ground diet (GD)(group 1) or pellet diet (PD)(group 2)(67% cornstalk),and the concentrate-type GD (group 3) or PD (group 4)(50% cornstalk) were fed from the 50th day of pregnancy.Two digestion-metabolism experiments at the 60 to 76 and 120 to 136 d of pregnancy were carried to study the effect of feeding PDs on the intake,digestion and metabolism of pregnant ewes.The results showed that under the conditions of roughage-type ration (RTR) and concentrate-type ration (CTR),the DM voluntary intake of ewes was increased by 44.8%(P<0.01) and 46.0%(P<0.01) at early pregnant stage (EPS),respectively,and 58.7%(P<0.01) and 58.5% (P<0.01) at later pregnant stage (LPS),respectively.The apparent digestibility of DM was decreased by 6.2%(P>0.05) and 6.0% (P>0.05) at EPS,respectively,and 8.0%(P>0.05) and 1.6%(P>0.05) at LPS,respectively. The apparent digestibility of CP was decreased by 13.9%(P>0.05) and 2.3%(P>0.05) at EPS,respectively,and 4.8%(P>0.05) and 3.9% (P>0.05) at LPS,respectively. The apparent digestibility of energy was decreased by 2.9%(P>0.05) and 5.7%(P<0.05) at EPS,respectively,and 0.5%(P>0.05) and 8.2%(P<0.01) at LPS,respectively.However,under the conditions of RTR and CTR,by feeding PD the digested amount of DM of ewes was increased by 19.7%(P<R0.05) and 37.0%(P<0.01) at EPS,respectively,and 65.8% (P<0.01) and 46.3%(P<0.01) at LPS,respectively.The digested CP amount of ewes was increased by 31.2%(P<0.01) and 30.4% (P<0.05) at EPS,respectively,and 60.1% (P<0.01) and 56.4% (P<0.01) at LPS,respectively. The amount of digestible energy was increased by 54.6%(P<0.01) and 36.8%(P<0.01) at EPS,respectively,and 105.2%(P<0.01) and 63.8% (P<0.01) at LPS,respectively. Under the conditions of RTR and CTR,by feeding PD the nitrogen retention of ewes was increased by 74.5%(P<0.01) and 44.7%(P<0.05) at EPS,respectively,and 101.1%(P<0.01) and 73.4%(P<0.01) at LPS,respectively. The birth weight of lamb was increased by 26.3%(P<0.05) and 34.8%(P<0.01),respectively. It was concluded that by feeding PD the voluntary intake of pregnant ewes could be increased. The digestibility of diet had the tendency to decrease,but the digested amount was increased very significantly. By feeding PD the nitrogen retention of ewes and the birth weight of lamb were increased.Therefore,feeding PD was an effective way for increasing nutrient supply to pregnant ewes.

Key words:

pelletdieteweintakedigestionmso-bidi-font-family: 宋体" lang="EN-US">