刈割时期和加工方式对柠条锦鸡儿饲用价值的影响.pdf

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1、第13卷第2期草地学报2005年6月Vol.13No.2ACTAAGRESTIASINICAJune2005文章编号:1007-0435(2005)02-0121-05刈割时期和加工方式对柠条锦鸡儿饲用价值的影响刘强1董宽虎1%刘明祥2王聪1(1.山西农业大学动物科技学院山西太谷030801;2.山西省农垦局太原030001)摘要:选用4头装有瘤胃瘘管的西门答尔牛用常规全收粪法测定柠条锦鸡儿(Caraganakorshznskzz)的消化率用瘤胃尼龙袋法测定瘤胃降解率;选用荷斯坦育成母牛54头分别饲喂当年生花期~结实期和2年生结实期切碎~揉碎及粉碎柠条锦鸡儿测定饲喂

2、效果,结果表明:干物质(DM)~有机质(0M)~粗蛋白质(CP)瘤胃降解率以开花期最高(P<0.05)当年生结实期显著高于2年生结实期老枝(P<0.05);中性洗涤纤维(NDF)~酸性洗涤纤维(ADF)和瘤胃降解率当年生开花期与结实期差异不显著但皆显著高于2年生老枝(P<0.05);0M消化率以花期揉碎处理最高(P<0.05)结实期揉碎和花期切碎间差异不显著但显著高于其它处理;CP~NDF和ADF消化率均以花期揉碎最高与结实期揉碎差异不显著但显著高于其它处理;每千克代谢体重柠条锦鸡儿和日粮干物质采食量均以结实期较高;加工方式以粉碎采食量高;结实期揉碎处理的采食率~日

3、增重最高(P<0.05)每千克增重消耗精料最少增重成本最低,关键词:柠条;育成母牛;瘤胃降解率;消化率;日增重;饲料转化效率中图分类号:S816.6文献标识码:AInfluenceofMowingPeriodandProceSSingMethodontheFeedingValueofCaraganakorshinskii1221LIUOiangD0NGKuan-huLIUMing-xiangWANGCong(1.CollegeofAnimalScienceandTechnologyShanxiAgriculturalUniVerSityTaiguShanxiProV

4、ince030801China;2.ShanxiProVincialFarmingandReclamationBureauTaiyuanShanxiProVince030001China)AbStract:FouroxenofSimilarageandWeightallWithpermanentrumenfiStulaWerechoSenandrandomlyallocatedtotentreatmentStoexaminetheirnutrientdigeStibilityandrumendegradablerateofCaraganakorshznskzz.Fi

5、fty-fourhealthyholSteinheiferSWithSimilarWeightWerechoSenandrandomlydiVidedintoninetreatmentgroupStoteStthefeedingeffectbygiVingthemcutrubbedorgroundC.korshznskzzWhichWeremoWedduringthefirSt-yearplantSbloomingorpoddingperiodorthebiennialplantSpoddingperiod.ThereSultShoWedthattherumende

6、gradablerateofdrymatterorganicmatterandcrudeproteinofthefirSt-yearC.korshznskzzmoWedduringthebloomingperiodWaSthehigheSt(P<0.05)muchhigherthanthatofthebiennialplantmoWedduringitSbloomingperiod(P<0.05).ThedegradabilityofneutraldetergentfiberandaciddetergentfiberofC.korshznskzzmoWeddurin

7、gthebloomingorpoddingperiodWerenotSignificantlydifferentbutobViouSlyhigherthanthatofthebiennialC.korshznskzzmoWedduringthepoddingperiod(P<0.05).ThenutrientdigeStibilityoforganicmatterofC.korshznskzzWaSSuperbifthefeedWaSmoWedduringtheplantbloomingperiodandWaSrubbedintotinybitS(P<0.05)