Friday, November 17, 2023
单选题下列物质中不能用作消毒药品的是()。A 过氧乙酸B 次氯酸钠C 氯化钠D 氢氧化钠...
Sunday, December 3, 2023
单选题糠麸类饲料中的钙、磷含量与畜禽需要量对比是()。A 钙多磷少B 磷多钙少C 钙磷都少D 刚好满足...
Tuesday, March 12, 2024
单选题猪每次排卵的个数一般为()个。A 10—25B 20—30C 5—10D 1—10...
Saturday, February 4, 2023
Wednesday, September 21, 2022
Friday, November 17, 2023
Wednesday, September 21, 2022
多选题早期胚胎根据其发育可分为()等几个时期。A胚泡期B桑椹期C囊胚期D原肠胚...
Tuesday, April 16, 2024
Friday, March 17, 2023
单选题生产中牛的精液保存常用()。A 常温保存B 低温保存C 冷冻保存D 高温保存...
Thursday, August 24, 2023
多选题下列属于能量饲料的有()。A玉米B小麦C鱼粉D豆粕...
Friday, April 5, 2024
Saturday, January 13, 2024
Friday, September 16, 2022
采用翻肛鉴别法区分雏鸡雌雄最适宜的鉴别时间应不超过出壳后()小时。...
Thursday, September 22, 2022
多选题在畜牧生产上,可依据维生素的溶解性将其划分为()等两大类。A必需维生素B脂溶性维生素C猪用维生素D水溶性维生素...
Thursday, September 28, 2023
Tuesday, August 9, 2022
问答题哪些外界因素对体外精子的生存代谢和运动有影响?分别有哪些影响?...
Sunday, December 3, 2023
Monday, April 10, 2023
多选题在孵化期中的后半期必须进行凉蛋的家禽有()。A鸡B鸭C鹅D鸽...
Saturday, January 13, 2024
Saturday, January 13, 2024