摘要
[目的]探究8种植物DM、CP、NDF、ADF的瘤胃降解特性[方法]采集了西北地区8种耐旱植物(柠条、油蒿、桑叶、苦马豆、千屈菜、香豆子、元宝枫叶、无芒雀麦),选用4头秦川牛肉用新品系瘤胃瘘管牛进行瘤胃降解试验[结果]常规营养成分:CP含量从小到大依次为无芒雀麦、千屈菜、油蒿、元宝枫叶、柠条、香豆子、桑叶、苦马豆(P<0.05);元宝枫叶与油蒿NDF、ADF含量相近(P>0.05),其他植物均存在显著差异(P<0.05)。瘤胃降解特性:桑叶与苦马豆的DM降解效果显著高于其他6种植物(P<0.05),无芒雀麦48 h的DM降解率仅29.56%,显著低于其他植物(P<0.05);CP的ED值从小到大依次为无芒雀麦、元宝枫叶、千屈菜、油蒿、柠条、香豆子、桑叶、苦马豆(P<0.05);NDF的ED值从小到大依次为无芒雀麦、元宝枫叶、油蒿、千屈菜、柠条、香豆子、苦马豆、桑叶(P<0.05),ADF的ED值从小到大依次为无芒雀麦、元宝枫叶、油蒿、千屈菜、苦马豆、香豆子、柠条、桑叶,其中柠条、苦马豆、香豆子和油蒿、元宝枫叶差异不显著(P>0.05)。[结论]桑叶、苦马豆、香豆子具有良好的饲用价值,可以作为西北地区草食家畜非常规饲草料的优质来源,柠条、元宝枫叶、油蒿、千屈菜、无芒雀麦可以通过青贮等方法提高饲用价值后用于家畜饲养。
[Objective]To study the rumen degradation characteristics of dry matter(DM),crude protein(CP),neutral detergent fiber(NDF)and acid detergent fiber(ADF)in 8 plants.[Method]In this experiment,8 drought-tolerant plants(Caragana korshinskii,Artemisia ordosica,Mulberry leaf,Sphaerophysa salsula,Lythrum salicaria,Fenugreek,Acer truncatum leaf,Bromus inermis)in Northwest China were collected,and four new strains of Qinchuan beef cattle with permanent rumen fistula were used.[Results]Conventional nutrient components:the CP contents order from small to large were Bromus inermis,Lythrum salicari,Artemisia ordosica,Acer truncatum leaf,Caragana korshinskii,Fenugreek,Mulberry leaf,Sphaerophysa salsula(P<0.05);The NDF and ADF contents of Acer truncatum leaves and Artemisia ordosica were similar(P>0.05),but there were significant differences among other plants(P<0.05).The NDF contents order from small to large were Mulberry leaf,Sphaerophysa salsula,Fenugreek,Caragana korshinskii,Acer truncatum leaf,Artemisia ordosica,Lythrum salicari,Bromus inermis.And the ADF contents order were Sphaerophysa salsula,Mulberry leaf,Fenugreek,Caragana korshinskii,Artemisia ordosica,Acer truncatum leaf,Bromus inermis,Lythrum salicari.Rumen degradation characteristics:(1)The DM degradations of Mulberry leaf and Sphaerophysa salsula were significantly higher than other 6 plants(P<0.05).The DM degradation of Bromus inermis for 48 h was only 29.56%,which was significantly lower than that of other plants(P<0.05).(2)The ED value of CP from small to large were Bromus inermis,Acer truncatum leaf,Lythrum salicaria,Artemisia ordosica,Caragana korshinskii,Fenugreek,Mulberry leaf and Sphaerophysa salsula(P<0.05).(3)The ED value of NDF from small to large were Bromus inermis,Acer truncatum leaf,Artemisia ordosica,Lythrum salicaria,Caragana korshinskii,Fenugreek,Sphaerophysa salsula,Mulberry leaf(P<0.05).The ED value of ADF from small to large were Bromus inermis,Acer truncatum leaf,Artemisia ordosica,Lythrum salicaria,Sphaerophysa salsula,Fenugreek,Caragana k
作者
顾祝荣
昝林森
赵春平
梅楚刚
周仁超
GU Zhu-rong;ZAN Lin-sen;ZHAO Chun-ping;MEI Chu-gang;ZHOU Ren-chao(College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100;National Beef Cattle Improvement Center, Yangling, Shaanxi 712100;Xihaigu Institute of High-end Beef Cattle Industry, Haiyuan, Ningxia 755220)
出处
《中国牛业科学》
2022年第3期20-28,共9页
China Cattle Science
基金
国家重点研发计划项目(2018YFD0501700)
国家肉牛牦牛产业技术体系项目(CARS—37)
西北农林科技大学推广专项(TGZX2019—22)
陕西省农业科技创新转化项目(NYKJ-2018-LY09)
宁夏回族自治区重点研发计划(2019BEF02204)
杨凌示范区科技专项。
关键词
西北地区
非常规饲料
耐旱植物
秦川肉牛
瘤胃降解特性
Northwest China
unconventional feed
drought-tolerant plant
Qinchuan beef cattle
rumen degradation characteristics
