检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:王正 谢晓敏 WANG Zheng;XIE Xiao-min(Mathematics Teaching and Research Group,Guangyuan Vocational Senior High School,Guangyuan 628017,China;Department of Primary Education,Chuanbei Normal College of Preschool Education,Guangyuan 628017,China)
机构地区:[1]四川省广元市职业高级中学校数学教研组,四川广元628017 [2]川北幼儿师范高等专科学校初等教育学院,四川广元628017
出 处:《南通职业大学学报》2024年第1期58-62,共5页Journal of Nantong Vocational University
摘 要:根据湖羊养殖场对于标准羊栏的规格要求,在实现连续生产条件下,确定羊栏为112个时,将种公羊与基础母羊以1∶14,1∶28,1∶42,1∶50的不同比例配置,分成1—4批,每批最短相差21天进行配种,并进行比较。结果表明,选择1∶42分三批,每批相差21天进行配种,年化出栏羊只数最多,但此配置方案的羊栏每天使用量并不平衡。为提高羊栏使用率,考虑增加配种批次进行优化。结果表明,9只公羊,408只母羊,配种间隔22天,配种数量为第1批48只,第2—10批每批40只,羊栏使用率达97.27%,年出栏羊约1300只。最后,给出了年化出栏羊只数最大时,此养殖场112个羊栏的具体生产计划。Based on the specifications for standard sheep pen and continuous production in the Hu Sheep farm,if the number of sheep pen is determined to be 112,breeding rams and basic ewes are divided into 4 batches in different ratios of 1∶14,1∶28,1∶42,and 1∶50,with a minimum difference of 21 days in each batch’s breeding.The comparison is made,which shows that ratio 1∶42 in three batches,with a difference of 21 days in each batch’s breeding,results in the maximum annual output of sheep.But the daily utility of sheep pen is not balanced.In order to improve the utilization of sheep pen,the number of breeding batch is increased.The results show that with 9 rams and 408 ewes,the breeding interval of 22 days and the breeding number being 48 in the first batch,and 40 in the next 9 batches,the utility rate of sheep pen reaches 97.27%.Meanwhile,about 1300 sheep are produced throughout a year.Finally,a specific production plan for 112 sheep pens in the farm is given aiming at the maximum annual output of sheep.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.130