中国南方肉牛生产空间关联分析及产业发展路径研究

[目的]为了厘清中国南方地区肉牛生产的空间关联关系,挖掘南方地区牛肉增产潜力,探索统一的生产大市场建设路径。[方法]文章基于2008—2020年肉牛生产数据,采用修正后的引力模型构建了南方地区15个省（市、区）的肉牛生产空间关联关系,运用社会网络分析法刻画了各地在肉牛生产空间关联网络中的地位和传导方向。[结果]（1）南方地区肉牛生产具有较强的空间关联性,其关联关系趋于稳定,但仍有巨大发展空间。（2）整体来看,关联网络中,安徽、贵州、四川和云南扮演“中心行动者”的角色;湖南和江西扮演“中介行动者”的角色,上海、福建、浙江和江苏扮演“边缘行动者”的角色。（3）生产板块已初具规模,贵州、云南、广西、四川和湖南是动能传递的终点,是发展南方地区肉牛生产的钥匙。[结论]未来南方肉牛生产大市场建设应在大力发展西南肉牛优势养殖区的基础上,加快建设湖南和江西的基础设施,充分发挥其地理区位的优越性和中介功能。加强省际交流,改良牛种,保障溢出板块的生产动能,完善双向溢出板块的连接功能,挖掘接收板块的生产潜力,布局完善的生产功能区。     

NEW ZEALAND BEEF AND SHEEP SUPPLY RELATIONSHIPS

The primary purposes of this study are to measure major relationships describing the responses of different components of sheep and beef farming capital stock in New Zealand to changes in economic conditions, and to investigate the way in which this capital stock has changed over time. These objectives are pursued by attempting to specify an econometric model that recognises joint production between sheep and beef cattle and also takes account of joint firm/household decision making. Aggregate New Zealand data for the period 1952/53 to 1973/74 are fitted to the model using Full Information Maximum Likelihood estimation.     

DETERMINANTS OF CHANGE IN THE NORTH AMERICAN FEEDER-CATTLE ECONOMY

Changing flow patterns characterize the North American cattle industry, which are having a significant impact on all aspects of Canadian agriculture. A brief review of important changes taking place in the feeder cattle industry is given together with an analysis of forces influencing the changing interregional economic relationships.
The results suggest an increasing rate of adjustment may be needed in the future as the economic variables and technological advances responsible for much of the change in the past continue to influence the Canadian cattle industry. The impact of change will not occur evenly across all areas and segments of the industry with the interregional trends that have developed particularly the expansion in flows from Western Canada to the Western United States showing no sign of slowing down. Eastern Canada may be under increasing pressure to expand either its imports of feeder cattle and dressed beef or develop its own feeder supply.     

中国肉牛养殖效率差异及提升途径研究

[目的]环境条件差异是我国农牧业发展的客观存在,也是导致农牧业投入产出效率千差万别的重要原因,不考虑环境条件影响的效率分析容易模糊农户的投入产出效率,进而可能掩盖效率差异的原因。通过分析发现全国各地区肉牛养殖存在着客观差异,利用模型处理将各地区环境影响处理到最小,从而得到更为准确的肉牛养殖技术效率值。[方法]文章利用国家肉牛牦牛产业技术体系肉牛养殖投入产出监测数据,采用三阶段DEA模型方法,研究农户肉牛养殖投入产出效率差异及其改善途径。[结果]（1）肉牛养殖投入产出效率与环境条件有密切的关系;（2）剔除环境条件差异影响后,87.11%样本的肉牛养殖投入产出效率发生显著变化,其中47.42%效率下降,39.69%效率提升;（3）投入要素冗余问题是肉牛养殖效率差异的本质,投入要素的冗余在剔环境条件影响后也发生了显著变化,进一步的分析发现我国肉牛养殖劳动力冗余问题在西南产区与东北产区较严重,而饲料投入冗余则呈现牧区、农区、农牧交错带地区逐渐增加的状态。[结论]提升我国肉牛投入产出效率要注重改善饲料投入冗余问题,西南和东北产区还要注重改善劳动力投入冗余的问题。     

中国肉牛养殖生产布局的阶段特征、变迁路径和影响机制——基于2008—2019年省域统计数据的空间计量分析

[目的]为充分了解“十一五”“十二五”“十三五”期间中国肉牛养殖及育肥养殖生产布局的阶段特征、变迁路径和影响机制。[方法]文章运用2008—2019年中国各地肉牛年末存栏量和牛肉产量数据,利用生产集中度、生产重心迁移轨迹阐述生产布局的阶段特征和变迁路径,利用莫兰指数、吉尔里指数和G指数分析空间相关性,利用空间面板模型分析影响因素及效应。[结果]肉牛养殖生产重心向西北方迁移了154.6km,自2017年空间正相关逐渐显著,粗饲料资源禀赋、劳动力质量、技术进步和非农就业机会是布局变迁的重要影响因素;肉牛育肥养殖生产重心向西迁移了119.15km,三大指数均具有显著性,饲料资源禀赋、劳动力质量、技术进步、市场价格、交通通达度、畜牧产业比较优势和非农就业机会是布局变迁的重要影响因素。[结论]肉牛养殖和育肥养殖均呈现出由农区向牧区迁移趋势,且存在空间正相关性,但具体变迁路径和影响机制有所差异,就此提出“合理编制肉牛生产规划、系统加强流通环节建设、强化科学技术支撑、保障饲料稳定供应”的政策建议。     

Effects of Bovine Spongiform Encephalopathy Outbreaks on U.S. Cattle and Beef Prices

U.S. trade of beef and live cattle declined substantially after the discoveries of bovine spongiform encephalopathy (BSE) in Canada and the United States in 2003. In this study, an econometric model is developed to estimate the effects of lifting trade restrictions on U.S. cattle and beef prices. Results show that increases in imports of Canadian cattle and beef would lower prices of slaughter steers, feeder steers, and retail beef, but these negative impacts would be more than negated by the positive effects on prices that would result if beef exports return to near pre-BSE levels.     

Demand for Beef from Cattle Administered Growth Hormones or Fed Genetically Modified Corn: A Comparison of Consumers in France, Germany, the United Kingdom, and the United States

We compare consumer valuations of beef ribeye steaks from cattle produced without growth hormones or genetically modified corn in France, Germany, the United Kingdom, and the United States. Results suggest that French consumers place a higher value on beef from cattle that have not been administered added growth hormones than U.S. consumers; however, valuations of non-hormone-treated beef are statistically indistinguishable across Germany, the United Kingdom, and the United States. Results also suggest that European consumers place a much higher value on beef from cattle that have not been fed genetically modified corn than U.S. consumers.     

Canadian Cattle Cycles and Market Shocks

We analyze Canadian beef cattle cycles using time‐series properties of four variables: total cattle inventories, beef cow inventories, beef supply, and beef prices. Our aim is to provide up‐to‐date estimates of the duration of the cycles, and to determine whether or not some of the recent market shocks can be associated with changes in the nature of the cycles. Spectral decomposition of the variables reveals 10‐year cycles in total cattle inventories, beef cow inventories, beef supply, and beef prices. Seasonal and annual cycles are also found in beef supply and prices, respectively. Using intervention analysis, exchange rate appreciation, feed price escalation, and bovine spongiform encephalopathy (BSE) are modeled as pure jumps. Exchange rate and feed price shocks are modeled as having started in 2002 and 2007, respectively, and persisted up to the end of the sample period, while BSE is modeled as a shift for the period 2003 to 2005. We find significant impacts of the three shocks on total inventories, but beef supply appears to have been impacted by exchange rates and BSE. A spectral comparison of the pre‐ and post‐shock periodograms of beef supply reveals a 58% reduction in the peak amplitude of the beef supply cycle.     

Estimated Value of Increased Pricing Accuracy for Fed Cattle

To improve vertical market coordination beef packers have introduced fed cattle grid pricing systems that offer premiums or discounts for varying carcass quality and yield grades. This study calculates the value of cattle quality information for producers considering live, dressed, and grid pricing alternatives. The value of fed cattle quality and yield grade information is at least $15/head. When fed cattle are sold on a live weight basis, high-quality cattle subsidize low-quality cattle by an average of $30/head. Price signals that could improve beef market coordination are ignored when fed cattle are marketed using traditional live or dressed weight methods.     

Impacts of Declining U.S. Retail Beef Demand on Farm-Level Beef Prices and Production

A systems model was estimated to determine the effects of declining U.S. retail beef demand on farm-level beef prices and production. Retail beef demand declined by nearly 66% from 1976 to 1999. Results indicate autonomous shifts in retail demand significantly impacted farm-level demands and production. Based on equilibrium multipliers, the 1976–99 reduction in beef demand decreased real slaughter cattle prices and production by 32.1% and 11.2%, respectively. Real feeder cattle prices and production decreased by 8.0% and 22.6%, respectively. Combining the decreases in farm prices and production, slaughter and feeder cattle producers experienced a real revenue reduction of $13.3 billion (61%) due to the long-term decline in demand.     

The Brazilian Cattle Sector: Status, Prospects and Controversies

The cattle sector in Brazil (and in other countries of South America) is substantial in terms of size and potential impacts in world markets. Due to the sheer magnitude and potential of the Brazilian cattle sector, it merits our attention. A trend to more productive cattle systems, new rules for trade in livestock products and more effective control of hoof and mouth disease in some areas of Brazil could cause it to become a more formidable beef exporter. Brazil also warrants attention because of the controversial practice of deforestation for cattle production in the Amazon rain forest. A vocal environmental lobby has decried cattle production in the Amazon, but this practice continues. This paper reviews the status, prospects and controversies of the beef sector in Brazil, with a special focus on deforestation and cattleproduction in tropical ecosystems.     

Effects of North American BSE Events on U.S. Cattle Prices

In May 2003, a beef cow in the Province of Alberta tested positive for bovine spongiform encephalopathy (BSE or mad cow disease). In December of 2003, a dairy cow in the state of Washington also tested positive for BSE. These discoveries disrupted cattle and beef trade in North America and major export markets. We examine the effects of these two North American BSE events on U.S. fed and feeder cattle prices. The results indicate that the demand for U.S. beef was affected to a much greater degree by the reactions of foreign governments to the BSE announcements than by the reactions of U.S. households.     

Inflation,capital markets and the supply of beef

This paper puts forward an explanation for the negative elasticity of supply of beef found in many LDC's. As is explained by Jarvis (1974), the elasticity of supply of beef may be negative in the short run due to the dual role of cattle as both a capital and a consumption good. But in some LDC's, and especially in Latin America, one may find a long-run negative association between slaughter and prices, that cannot be explained by assuming shocks to slaughter are causing changes in prices. It is no coincidence that Jarvis' hypothesis itself was developed to explain developments in Argentina, a country with chronic high inflation. The paper argues that this long-run relationship cannot be explained by the Jarvis hypothesis, and offers an alternative hypothesis based on the demand for cattle as a hedge against inflation. The long-run negative association between slaughter and prices has been found in high inflation countries. High inflation combined with excessive regulation of capital markets cause the well known phenomenon of desintermediation. It is argued here that cattle plays a role in the inflation hedged portfolio that is then demanded. Therefore, with imperfect capital markets the supply of beef is affected by the demand for cattle as an asset, and this demand, in turn, is affected by inflation. This paper will only attempt to prove the link between imperfect capital markets and the supply of beef. The way inflation in a repressed capital market leads to an imperfect capital market is not addressed here, for reasons of brevity. The paper will develop a model that in the context of imperfect capital markets results in a negative elasticity of supply. The model will then be tested with Uruguayan data. Uruguayan data are very adequate to test the hypothesis because they cover both a period without inflation and a period of high inflation. The results support that cattle was used as an alternative to money holdings when inflation signified a big tax on the latter. Inflation therefore affected the demand for cattle, or, conversely, the supply of beef.     

Measuring impacts and adaptations to climate change: a structural Ricardian model of African livestock management1

This article develops a new cross‐sectional methodology that explicitly incorporates adaptation into an analysis of the impacts of climate change. The methodology examines how a farmer will change choices of species and number to adapt to climate. The approach is applied to study Africa, where the impacts of climate change are expected to be the most severe. The results indicate that in warmer places, African farmers switch from beef cattle to more heat‐tolerant goats and sheep. In wetter places, farmers switch from cattle and sheep to goats and chickens. The results indicate that large commercial livestock operations specializing in beef cattle will be hard hit from climate change whereas small farmers who can easily substitute to goats and/or sheep will be more resilient.     

Canadian Exports of Livestock and Meat to the United States

Canadian exports of beef and live cattle to the United States have increased significantly since the late 1980s. Hog and pork exports have increased since the mid-1990s. Major factors affecting exports of beef, pork, cattle and hogs from Canada to the United States include the exchange rate, increased Canadian production, Canada-U.S. price differentials and trade liberalization under the Canada-United States Free Trade Agreement of 1989. Increased Canadian exports have resulted in small but significant reductions in U.S. domestic prices of beef, pork and hogs.     

Dynamic adjustment in the US beef market with imports

This paper hypothesizes that while there are important qualitative differences in domestic beef and imported beef, beef and cattle imports also represent attempts by the US beef processing and wholesale sector to adjust to short-run changes in supply and demand. Dynamic production theory is applied to the problem to test for this adjustment process, and presents a production theory approach to meat trade that has previously been included in demand functions. The results of this analysis suggest that the method used provides a reasonable and appropriate representation of the import behavior of the US processing and wholesale beef sector.     

Characterisation of extensive beef cattle systems: Disparities between opinions,practice and policy

Increasing pressure on extensive farming systems in marginal areas requires them to become more resilient and adaptable to extreme conditions brought about by climate change. Yet these rangeland areas must also be protected as refuges for biodiversity and as important carbon stores. Recent United Kingdom policy initiatives are encouraging the use of traditional or native breeds of livestock to preserve genetic diversity, due to their perceived adaption to harsh environments and their value for managing extensive habitats for conservation. It is not clear however, whether these benefits are based on scientific evidence or perhaps more on current opinion; nor whether farm system practices are likely to change in response to these initiatives. This study offers an approach that can support future empirical studies designed to better inform such policy decisions.A survey was carried out to provide insight into current opinions regarding the impacts of cattle on hill environments and the cattle breeds appropriate for hill environments, before more detailed farm interviews provided data for a characterisation of suckler beef farming systems in Scotland using a typological approach. Survey results indicated that the majority of respondents believed cattle have a positive effect on hill environments when carefully managed, yet there was wide diversity in opinion regarding the type of impacts and most suitable breeds. Interview results highlighted the diversity of management systems, decision making processes and cattle types present and indicated significant variation in farmers’ views regarding breed hardiness, suitability and reasons for their choice of breed. Three system groups: Traditionalists, Improvers and Production optimisers, were clearly defined by the typology, with significant variation observed in their management practices and views. This study suggests that hill beef farmers appear to not only adapt their production systems according to their current bio-physical and financial circumstances, but also from personal experience. Accumulation of this kind of evidence is long overdue and could provide support to the development of any future policies regarding cattle and hill environments.     

Comparative Advantage Indices of Selected Livestock Production Sectors in Brunei Darussalam

Abstract

This study calculates the protection rates and comparative advantage indices of livestock industry in Brunei from an import substitution perspective. Four livestock sub-sectors were being evaluated: broiler, layer, goat and beef cattle. Two measures of government intervention indices were calculated, namely nominal protection rate (NPR) and effective protection rate (EPR). Domestic resource cost (DRC) and resource cost ratio (RCR) indices were computed to determine the comparative advantages of the livestock industry. In general, the results indicate that the livestock industry in Brunei was heavily protected. The study revealed the existence of comparative advantage only for very large farms producing poultry meat and eggs. Similarly in the ruminant sector, goat production appears to have comparative advantage over beef cattle. Small and medium poultry farms and large non-ruminant farms and cattle beef production possess comparative disadvantage despite being highly protected industries.     

Market and Cost Structure in the U.S. Beef Packing Industry: A Plant-Level Analysis

A resurgence of consolidation in the U.S. meat packing industry in the past few decades has stimulated academic and policy debate. Issues raised include the role of cost economies in driving these patterns, and the effects on the agricultural sector (cattle producers) from market power. Here, plant level cost and revenue data for U.S. beef packing plants are used to estimate a cost-based model incorporating cattle- and output-market pricing behavior. The robust results indicate little market power exploitation in either the cattle input or beef output markets, and that any apparent evidence is counteracted by cost efficiencies such as utilization and scope economies.     

Testing for Processor Market Power in the Markets for Cattle and Hogs in Canada

Deviations of livestock input prices from processor marginal value product are usually interpreted as an indication of the application of market power by the meat packing industry. However, market power depends on economic conditions that can influence the behavior of meat packers in the market for cattle and hogs. An industry-level translog profit function is applied to data on the Canadian finished cattle and hog markets and industry-wide oligopsony market power functions are estimated. The estimates suggest beef packers exercised a small but sustained amount of market power in the Canadian finished cattle market from 1978 to 1997. This is not the case in the market for hogs, which was competitive from 1960 to 1997. Application of market power in packers'purchases of farm animals decreased with increases in the utilization of domestic supply of slaughter animals and with increased levels of livestock exports. Livestock productivity increases appear to have significantly enhanced oligopsony power in packers'purchases of farm animals. The analysis suggests that beef processors may exert market power when cattle prices are relatively higher.