畜群结构 在 畜牧与动物医学 分类中 的翻译结果
本文关键词：高寒草地生态经济系统价值流、畜群结构、最优控制管理及可持续发展，由笔耕文化传播整理发布。
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畜群结构
Using Optimal Selection Method to Screen economic benefit Optimum Flock Structure of Tibetan Sheep
运用数学优选法筛选藏羊最佳畜群结构
短句来源
Selection of Optimum Tibet-sheep Flock Structure in Xiewu township
歇武乡藏羊最优畜群结构的选择
短句来源
Value flow,livestock structure,optimal-control management and sustainable development of ecological economic system in alpine meadow
高寒草地生态经济系统价值流、畜群结构、最优控制管理及可持续发展
短句来源
The Effects of Livestock Structure on Economical Benefits for the Sheep-raising Farmers in the Hills
畜群结构对山区农民饲养绵羊经济效益的影响
短句来源
(2) Optimizing livestock structure with priority given to sheep, cattle and rabbit raising;
②优化畜群结构,以羊、牛、兔为主;
短句来源
Some measures were presented including establishing artificial grassland, building warm pen, fattening feedlot cattle and sheep, rehabilitating vegetation, improving livestock structure and grazing intensity, which was an important ensure for the sustainable development of Gannan alpine grassland husbandry, harmony of economy, economy and social profits.
提出建立人工草地、修建牲畜暖棚并进行牛羊舍饲育肥、退化草地恢复与重建、优化畜群结构和放牧强度等措施,是实现甘南高寒草地畜牧业的可持续发展,草地经济、生态和社会效应协调的重要保证。
短句来源
A Review of Livestock Population Structure Management Research
畜群结构管理研究进展
短句来源
Herd structure and economic benefit
畜群结构与效益的研究
短句来源
improving breed and herd structure;
良种化; 改进畜群结构;
短句来源
The proportion of breeding yak cows and reproductive performance can be significantly increased by manipulation of herd structure and reproductive technology,thus improve milk output.
畜群结构调控和常规繁殖技术,可显著提高适龄母牛的群体比率和繁殖率,从而提高群体产奶水平。
短句来源
A group of equations was established in accordance with herd structure dynamics. These equations were used to obtain the herd structure and offtake rate. Further analysis showed that herd offtake rate is related with livestock offtake age and female reproduction rate.
建立了畜群结构满足的方程组,通过解方程组得到畜群结构与畜群出栏率,进一步分析得出畜群出栏率与出栏畜龄P和母畜产羔率r有关。
短句来源
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flock structure
A comparison of nearest neighbour distances indicates that dunlin have a tighter, more compact flock structure than do starlings (Fig.
Flock structure was examined by measuring association among flock members in three ways: spatial proximity, temporal association, and association of individuals during flock movements.
Local chicken production system in Malawi: Household flock structure, dynamics, management and health
The objective was to evaluate the local chicken production system by investigating flock structure, utilization, management and constraints.
The animals with classic scrapie were not matched for age, breed, or flock structure with animals with atypical scrapie.
herd structure
Observations are included on herd size, herd structure, seasonal calving and reproductive performance.
The relationship between herd structure and reproductive performance is discussed.
Measuring the benefits of disease control: Relationship between herd structure, productivity and health
After a period of time, one of the pigs will give up and you will begin to see a defined herd structure.
Distribution and herd structure of bottlenose dolphins in the eastern tropical Pacific Ocean in The Bottlenose Dolphin by S.
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It is one of the most important ways of managing animal production to ocntrol the population age-sex distribution.At present, the population age-sex distribution of domestic sheep in China is not rationally controlled for economic benefit and ecological efficiency.In studying the population age-sex distribution of the Tibetan sheep,the system analysis method was used and a matrix model was set up to discuss the state of the population age-sex distribution:In this formula. AN represents the natural tendency of...
It is one of the most important ways of managing animal production to ocntrol the population age-sex distribution.At present, the population age-sex distribution of domestic sheep in China is not rationally controlled for economic benefit and ecological efficiency.In studying the population age-sex distribution of the Tibetan sheep,the system analysis method was used and a matrix model was set up to discuss the state of the population age-sex distribution:In this formula. AN represents the natural tendency of the population; U represents the measures of the population control. The second model-linear programming model was set up to determine the optimal stable age-sex distribution of the popualtion and the correlated slaughter program.Max.In this model, the objective of optimization is to maximize the gains form the population, and the contraints are both the herbage availibility of the alpine meadow and the equalibrium state of the age-sex distribution. These models above offer the methods to study the age- sex distribution of the sheep population. Using the linear programming model and actual field data gained in Meny-uan County, Qinhai, China, the optimal age-sex distribution and the slaughter program correlated were determined with computer. To maximize energy output of sheep products, the optimal distribution is. 67.80% adult ewes, 28.36% yonug ewes and 3.84% adult and young males, and the optimal slaughter program correlated in late autumn is: 100% wethers, 100% old and weak sheep, and 33.17% adult ewes. According to this program, it is expected that the slaughter rate per year will probably be increased to 52.79% and the sheep products, which contain 11.72 KKcal energy or 3.65 Kg liveweight, gained form 100Kg herbage available.
配置畜群结构是管理畜牧生产最重要的工作之一。目前我国普遍存在着畜群结构不合理的现象。藏羊是我国第二大绵羊品种,其生产管理落后,种群结构普遍不合理。为组织合理生产,本文用系统分析的方法对藏羊种群结构进行了研究。首先,根据实地调查研究,作者构成了一个矩阵模型,以描述藏羊种群的性别年龄结构状态: N_(t+1)=AN_t-BU_t 其中AN_t反映羊群的自然变动情况,U_t是人为控制量。 然后,以最大羊产品收获为目标,以牧草资源和种群平衡态为限制条件,本文构造了一个线性规划模型,用以计算最优藏羊种群结构及其出栏方案; 除了给出模型这个研究种群结构问题的方法之外,本文使用线性规划模型,利用作者在青海省门源县风闸口地区调查测定的数据,通过计算机,算出了该地最优藏羊种群结构及其出栏方案。在最大能量收获的目标下。最优结构应为,67.80％的繁殖母羊,28.36％的后备母羊,3.84％的种公羊和后备种公 羊。相应出栏方案是每年秋季出栏全部羯羊羔和老弱羊,并且出栏33.17％的成年母羊。在这种方案下,按现有羊只生产能力,出栏率可提高到52.79％,平均从每百公斤牧草中收获合11.72千千卡能量或3.65...
配置畜群结构是管理畜牧生产最重要的工作之一。目前我国普遍存在着畜群结构不合理的现象。藏羊是我国第二大绵羊品种,其生产管理落后,种群结构普遍不合理。为组织合理生产,本文用系统分析的方法对藏羊种群结构进行了研究。首先,根据实地调查研究,作者构成了一个矩阵模型,以描述藏羊种群的性别年龄结构状态: N_(t+1)=AN_t-BU_t 其中AN_t反映羊群的自然变动情况,U_t是人为控制量。 然后,以最大羊产品收获为目标,以牧草资源和种群平衡态为限制条件,本文构造了一个线性规划模型,用以计算最优藏羊种群结构及其出栏方案; 除了给出模型这个研究种群结构问题的方法之外,本文使用线性规划模型,利用作者在青海省门源县风闸口地区调查测定的数据,通过计算机,算出了该地最优藏羊种群结构及其出栏方案。在最大能量收获的目标下。最优结构应为,67.80％的繁殖母羊,28.36％的后备母羊,3.84％的种公羊和后备种公 羊。相应出栏方案是每年秋季出栏全部羯羊羔和老弱羊,并且出栏33.17％的成年母羊。在这种方案下,按现有羊只生产能力,出栏率可提高到52.79％,平均从每百公斤牧草中收获合11.72千千卡能量或3.65公斤活重的羊产品。
The triaegle zone among Shanxi, Shaanxi and Inner Mongolia lies in the south edge of Maowusu Desert with a land area of 77.0795 million mu, of which grassland is 30.3273 million mu. There are many kinds of animal breeds and poultry species. Traditionally, this region has beem the livestock raising in the main, holding a great potential to develop livestock preduction. Also,coal in this region is urgent to be explored. Based on the natural and existing livestock conditions, the strategical principles for livestock...
The triaegle zone among Shanxi, Shaanxi and Inner Mongolia lies in the south edge of Maowusu Desert with a land area of 77.0795 million mu, of which grassland is 30.3273 million mu. There are many kinds of animal breeds and poultry species. Traditionally, this region has beem the livestock raising in the main, holding a great potential to develop livestock preduction. Also,coal in this region is urgent to be explored. Based on the natural and existing livestock conditions, the strategical principles for livestock development in this region will be as follows: priority must be given to livestock development in close combination with agricultural production. planting grass stimulates livestock to develop grain-saving-type animals i. e. grass-eating animals with priority given to sheep, cattle and rabbit raising. Assitance must be offered to the peasant professional households and the pilot professional households so as to make them embark on the road of commodity production, intensive management, professional division and social services. For this reason, the steps should be taken as follows: (1) strengthening grassland construction and doing a good job in protection and utilization of grass land;(2) Optimizing livestock structure with priority given to sheep, cattle and rabbit raising; (3) promoting the optimum operation scale; and (4) ordering economical relationships, the pricing system mechanism and reforming current flowing system. Based on the investigation, this paper also estimates the demands and supplies for animal products in the future.
晋陕蒙三角区地处毛鸟素沙漠南缘,土地面积7707.95万亩,草地占3032.73万亩,畜禽品种多,传统上是以以养殖业为主的地区,具有发展畜牧业的优势。本地区还是我国急待开发的煤炭基地。根据自然条件和畜牧业的现状,本区发展畜牧业的战略方针是:以牧为主,农牧结合,种草兴牧,发展节粮型的草食牲畜,特别要大力发展养羊,扶持专业户、重点户,逐步走上生产商品化、经营集约化,分工专业化和社会服务化的道路。为此,①加强草原建设,做好保护与合理利用。②优化畜群结构,以羊、牛、兔为主;③促进适度規模经营。④理顺经济关系、价格体系机制,改革流通体制。依据调查本文还对本地区畜产品供需作了予测。
According to the husbandry resource in Ju Country, the studies on the optimization model of the ratio of species of animal population were carried out, using the fundamental tenets of system engineering and electronic computer. It indicated that adjusting by this given model, 12695780 yuan can be added to the totol income, ecnomic efficientcy can be raised 15％, on the condition of adding no investment, It provided the scientific basis and method for the develpment of animal husbandry in the west southen mountain...
According to the husbandry resource in Ju Country, the studies on the optimization model of the ratio of species of animal population were carried out, using the fundamental tenets of system engineering and electronic computer. It indicated that adjusting by this given model, 12695780 yuan can be added to the totol income, ecnomic efficientcy can be raised 15％, on the condition of adding no investment, It provided the scientific basis and method for the develpment of animal husbandry in the west southen mountain region, shandong privence.
根据鲁西南山区畜牧资源现状,运用系统工程方法经过计算机处理调查数据,求得鲁西南山区一畜牧群结构最优化模型,按此模型调整后的畜群结构,在不增加任何投资情况下,即可增加收入1269.6万元,提高经济效益15％。
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本文关键词：高寒草地生态经济系统价值流、畜群结构、最优控制管理及可持续发展，由笔耕文化传播整理发布。
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