本文關(guān)鍵詞：高寒草地生態(tài)經(jīng)濟系統(tǒng)價值流、畜群結(jié)構(gòu)、最優(yōu)控制管理及可持續(xù)發(fā)展，由筆耕文化傳播整理發(fā)布。

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畜群結(jié)構(gòu)     

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    Using Optimal Selection Method to Screen economic benefit Optimum Flock Structure of Tibetan Sheep

    運用數(shù)學(xué)優(yōu)選法篩選藏羊最佳畜群結(jié)構(gòu)

短句來源

    Selection of Optimum Tibet-sheep Flock Structure in Xiewu township

    歇武鄉(xiāng)藏羊最優(yōu)畜群結(jié)構(gòu)的選擇

短句來源

  

    Value flow,livestock structure,optimal-control management and sustainable development of ecological economic system in alpine meadow

    高寒草地生態(tài)經(jīng)濟系統(tǒng)價值流、畜群結(jié)構(gòu)、最優(yōu)控制管理及可持續(xù)發(fā)展

短句來源

    The Effects of Livestock Structure on Economical Benefits for the Sheep-raising Farmers in the Hills

    畜群結(jié)構(gòu)對山區(qū)農(nóng)民飼養(yǎng)綿羊經(jīng)濟效益的影響

短句來源

    (2) Optimizing livestock structure with priority given to sheep, cattle and rabbit raising;

    ②優(yōu)化畜群結(jié)構(gòu),以羊、牛、兔為主;

短句來源

    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、修建牲畜暖棚并進行牛羊舍飼育肥、退化草地恢復(fù)與重建、優(yōu)化畜群結(jié)構(gòu)和放牧強度等措施,是實現(xiàn)甘南高寒草地畜牧業(yè)的可持續(xù)發(fā)展,草地經(jīng)濟、生態(tài)和社會效應(yīng)協(xié)調(diào)的重要保證。

短句來源

  

    A Review of Livestock Population Structure Management Research

    畜群結(jié)構(gòu)管理研究進展

短句來源

  

    Herd structure and economic benefit

    畜群結(jié)構(gòu)與效益的研究

短句來源

    improving breed and herd structure;

    良種化; 改進畜群結(jié)構(gòu);

短句來源

    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.

    畜群結(jié)構(gòu)調(diào)控和常規(guī)繁殖技術(shù),可顯著提高適齡母牛的群體比率和繁殖率,從而提高群體產(chǎn)奶水平。

短句來源

    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.

    建立了畜群結(jié)構(gòu)滿足的方程組,通過解方程組得到畜群結(jié)構(gòu)與畜群出欄率,進一步分析得出畜群出欄率與出欄畜齡P和母畜產(chǎn)羔率r有關(guān)。

短句來源

 

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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.

配置畜群結(jié)構(gòu)是管理畜牧生產(chǎn)最重要的工作之一。目前我國普遍存在著畜群結(jié)構(gòu)不合理的現(xiàn)象。藏羊是我國第二大綿羊品種,其生產(chǎn)管理落后,種群結(jié)構(gòu)普遍不合理。為組織合理生產(chǎn),本文用系統(tǒng)分析的方法對藏羊種群結(jié)構(gòu)進行了研究。首先,根據(jù)實地調(diào)查研究,作者構(gòu)成了一個矩陣模型,以描述藏羊種群的性別年齡結(jié)構(gòu)狀態(tài): N_(t+1)=AN_t-BU_t 其中AN_t反映羊群的自然變動情況,U_t是人為控制量。 然后,以最大羊產(chǎn)品收獲為目標,以牧草資源和種群平衡態(tài)為限制條件,本文構(gòu)造了一個線性規(guī)劃模型,用以計算最優(yōu)藏羊種群結(jié)構(gòu)及其出欄方案; 除了給出模型這個研究種群結(jié)構(gòu)問題的方法之外,本文使用線性規(guī)劃模型,利用作者在青海省門源縣風(fēng)閘口地區(qū)調(diào)查測定的數(shù)據(jù),通過計算機,算出了該地最優(yōu)藏羊種群結(jié)構(gòu)及其出欄方案。在最大能量收獲的目標下。最優(yōu)結(jié)構(gòu)應(yīng)為,67.80％的繁殖母羊,28.36％的后備母羊,3.84％的種公羊和后備種公 羊。相應(yīng)出欄方案是每年秋季出欄全部羯羊羔和老弱羊,并且出欄33.17％的成年母羊。在這種方案下,按現(xiàn)有羊只生產(chǎn)能力,出欄率可提高到52.79％,平均從每百公斤牧草中收獲合11.72千千卡能量或3.65...

配置畜群結(jié)構(gòu)是管理畜牧生產(chǎn)最重要的工作之一。目前我國普遍存在著畜群結(jié)構(gòu)不合理的現(xiàn)象。藏羊是我國第二大綿羊品種,其生產(chǎn)管理落后,種群結(jié)構(gòu)普遍不合理。為組織合理生產(chǎn),本文用系統(tǒng)分析的方法對藏羊種群結(jié)構(gòu)進行了研究。首先,根據(jù)實地調(diào)查研究,作者構(gòu)成了一個矩陣模型,以描述藏羊種群的性別年齡結(jié)構(gòu)狀態(tài): N_(t+1)=AN_t-BU_t 其中AN_t反映羊群的自然變動情況,U_t是人為控制量。 然后,以最大羊產(chǎn)品收獲為目標,以牧草資源和種群平衡態(tài)為限制條件,本文構(gòu)造了一個線性規(guī)劃模型,用以計算最優(yōu)藏羊種群結(jié)構(gòu)及其出欄方案; 除了給出模型這個研究種群結(jié)構(gòu)問題的方法之外,本文使用線性規(guī)劃模型,利用作者在青海省門源縣風(fēng)閘口地區(qū)調(diào)查測定的數(shù)據(jù),通過計算機,算出了該地最優(yōu)藏羊種群結(jié)構(gòu)及其出欄方案。在最大能量收獲的目標下。最優(yōu)結(jié)構(gòu)應(yīng)為,67.80％的繁殖母羊,28.36％的后備母羊,3.84％的種公羊和后備種公 羊。相應(yīng)出欄方案是每年秋季出欄全部羯羊羔和老弱羊,并且出欄33.17％的成年母羊。在這種方案下,按現(xiàn)有羊只生產(chǎn)能力,出欄率可提高到52.79％,平均從每百公斤牧草中收獲合11.72千千卡能量或3.65公斤活重的羊產(chǎn)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.

晉陜蒙三角區(qū)地處毛鳥素沙漠南緣,土地面積7707.95萬畝,草地占3032.73萬畝,畜禽品種多,傳統(tǒng)上是以以養(yǎng)殖業(yè)為主的地區(qū),具有發(fā)展畜牧業(yè)的優(yōu)勢。本地區(qū)還是我國急待開發(fā)的煤炭基地。根據(jù)自然條件和畜牧業(yè)的現(xiàn)狀,本區(qū)發(fā)展畜牧業(yè)的戰(zhàn)略方針是:以牧為主,農(nóng)牧結(jié)合,種草興牧,發(fā)展節(jié)糧型的草食牲畜,特別要大力發(fā)展養(yǎng)羊,扶持專業(yè)戶、重點戶,逐步走上生產(chǎn)商品化、經(jīng)營集約化,分工專業(yè)化和社會服務(wù)化的道路。為此,①加強草原建設(shè),做好保護與合理利用。②優(yōu)化畜群結(jié)構(gòu),以羊、牛、兔為主;③促進適度規(guī)模經(jīng)營。④理順經(jīng)濟關(guān)系、價格體系機制,改革流通體制。依據(jù)調(diào)查本文還對本地區(qū)畜產(chǎn)品供需作了予測。

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.

根據(jù)魯西南山區(qū)畜牧資源現(xiàn)狀,運用系統(tǒng)工程方法經(jīng)過計算機處理調(diào)查數(shù)據(jù),求得魯西南山區(qū)一畜牧群結(jié)構(gòu)最優(yōu)化模型,按此模型調(diào)整后的畜群結(jié)構(gòu),在不增加任何投資情況下,即可增加收入1269.6萬元,提高經(jīng)濟效益15％。

 

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  本文關(guān)鍵詞：高寒草地生態(tài)經(jīng)濟系統(tǒng)價值流、畜群結(jié)構(gòu)、最優(yōu)控制管理及可持續(xù)發(fā)展，由筆耕文化傳播整理發(fā)布。

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本文編號：227836