广西喀斯特地区4种饲用甜高粱农艺性状、营养成分及相对饲喂价值分析  

Analysis of agronomic traits, nutritional components,and relative feeding value of four feed sweet sorghum varieties in Karst areas of Guangxi

作　　者：易显菊 张辉 吕玲燕 庞天德 易显凤 YI Xian-ju;ZHANG Hui;LÜLing-yan;PANG Tian-de;YI Xian-feng

机构地区：[1]广西畜禽品种改良站,广西南宁530002 [2]广西浩众农业科技有限公司,广西南宁530201 [3]广西农业职业技术大学,广西南宁530007

出　　处：《饲料研究》2024年第10期130-133,共4页Feed Research

基　　金：广西科技重大专项(项目编号:桂科AA22068099);广西重点研发计划项目(项目编号:桂科AB21220018);广西牛羊创新团队项目(项目编号:nycytxgxcxtd-2021-09)。

摘　　要：研究旨在筛选出适合广西喀斯特地区种植的饲用甜高粱品种。试验以4种饲用甜高粱为研究对象,分析甜高粱的农艺性状、生物学产量、营养价值和相对饲喂价值。结果表明:甜高粱601的株高和分蘖数显著高于甜高粱326、901以及大力士(P<0.05),而大力士的茎粗和茎节数显著高于甜高粱326、601、901 (P<0.05),大力士和甜高粱901茎叶比显著高于甜高粱326和601 (P<0.05)。甜高粱326和601的鲜草产量、干草产量显著高于甜高粱901和大力士(P<0.05),甜高粱601干鲜比为31.34%,在所有品种中最高。大力士的粗蛋白含量高于甜高粱326、601和901;甜高粱901的粗纤维、酸性洗涤纤维含量显著高于大力士、甜高粱326和601 (P<0.05);甜高粱601的中性洗涤纤维含量为60.82%,显著高于大力士、甜高粱326和901 (P<0.05),甜高粱601粗脂肪和干物质含量分别为23.78 g/kg和31.17%,显著高于甜高粱326、901及大力士(P<0.05);甜高粱326的粗灰分含量为9.59%,在所有品种中最高。甜高粱326的干物质采食量、可消化干物质、相对饲用价值和可消化营养物质在所有品种中最高。研究表明,甜高粱326、601更适合在广西喀斯特地区种植。The study was to screen out feed sweet sorghum varieties suitable for planting in Karst areas of Guangxi.The experiment focuses on four varieties of sweet sorghum for feed,analyzing the agronomic traits,biological yield,nutritional value,and relative feeding value of sweet sorghum.The results showed that the plant height and tillering number of sweet sorghum 601 were significantly higher than those of sweet sorghum 326,901,and Hercules(P<0.05),while Hercules had a significantly higher stem diameter and number of stem nodes than sweet sorghum 326,601,and 901(P<0.05).In terms of stem to leaf ratio,Hercules and sweet sorghum 901 were significantly higher than sweet sorghum 326,601(P<0.05).The fresh grass yield and dry grass yield of sweet sorghum 326 and 601 were significantly higher than those of sweet sorghum 901 and Hercules(P<0.05).In terms of dry to fresh ratio,the content of sweet sorghum 601 was 31.34%,which was the highest among all varieties.The crude protein content of Hercules was higher than that of sweet sorghum 326,601,and 901.The crude fiber and acid detergent fiber content of sweet sorghum 901 were significantly higher than those of Hercules and sweet sorghum 326 and 601(P<0.05).The neutral detergent fiber content of sweet sorghum 601 was 60.82%,which was significantly higher than that of Hercules,sweet sorghum 326,and 901(P<0.05).In terms of crude fat and dry matter content,the content of sweet sorghum 601 was 23.78 g/kg and 31.17%,which were significantly higher than that of sweet sorghum 326,901,and Hercules(P<0.05).The crude ash content of sweet sorghum 326 was 9.59%,which was the highest among all varieties.The dry matter intake,digestible dry matter,relative feed value,and digestible nutrients of sweet sorghum 326 were the highest among all varieties.The study indicates that sweet sorghum 326 and 601 are more suitable for planting in Karst areas of Guangxi.

关 键 词：广西喀斯特地区 甜高粱 农艺性状 营养成分 相对饲喂价值 

分 类 号：S816[农业科学—饲料科学]