西北地区8种耐旱植物营养成分在秦川肉牛瘤胃的降解情况

Rumen degradation of nutrients of 8 drought-tolerant plants in northwest China in of Qinchuan beef cattle

中文关键词: 西北地区，非常规饲料，耐旱植物，秦川肉牛，瘤胃降解特性

英文关键词: Northwest  China, Unconventional  feed, Drought-tolerant  plant, Qinchuan  beef cattle, Rumen  degradation characteristics

中文摘要:

      本试验采集了西北地区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头体重相近的秦川牛肉用新品系瘤胃瘘管公牛进行试验,探究8种植物干物质(DM)、粗蛋白(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)的瘤胃降解特性。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),油蒿、千屈菜、元宝枫叶48 h时DM降解情况差异不显著(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)。

英文摘要:

      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 (healthy bulls with similar weight) with permanent rumen fistula were selected to study the rumen degradation characteristics of 8 plants’ dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF). And the results are as follows: