Saturday, September 17, 2022
Sunday, January 29, 2023
问题:矿物质饲料中食盐可用来补充动物所需的()和()之需,其中动物饲料中的用量一般为()...
Wednesday, August 30, 2023
问题:在我国《饲料卫生标准》(GB13078-2001)所列的卫生指标项目中,农药检测项目有()和()...
Monday, January 27, 2025
Friday, April 11, 2025
Thursday, September 15, 2022
Wednesday, December 25, 2024
问题:单胃动物日粮中蛋白质品质好坏直接影响动物体蛋白质品质。...
Thursday, September 15, 2022
Thursday, November 10, 2022
Sunday, June 29, 2025
Tuesday, February 7, 2023
Thursday, June 6, 2024
问题:基础氮代谢的常用评定方法是()。A、外加氨基酸法B、无氮日粮法C、氮沉积法D、回归法...
Sunday, June 29, 2025
Saturday, September 17, 2022
问题:配合饲料的基本类型有()、()、()和()四种。...
Tuesday, December 31, 2024
问题:青饲料中蛋白质含量较(),也是供应家畜()营养的优良来源。其中含...
Saturday, September 17, 2022
问题:哺乳仔猪贫血是由于母乳所能提供的铁量大大少于仔猪正常生长所需的铁...
Saturday, September 17, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022