城市人口增长和人均收入对尼日利亚反刍牲畜生产系统的影响

A. Onoja
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摘要

该研究广泛探讨了尼日利亚城市人口增长与反刍牲畜生产系统之间的关系。它利用了53年来世界发展指标和粮农组织统计数据库的累计时间序列数据。采用描述性方法和全修正普通最小二乘(FMOLS)方法对收集的数据进行分析。使用的三个FMOLS模型是协整的。从1961年到2013年,城市人口增长、气温变化、人均收入与牛、绵羊和山羊的历史肉类产量的关系都在上升。1986年尼日利亚开始执行结构调整方案时,出现了大幅度下降。研究发现,城市人口、总人口和人均收入在很大程度上决定了尼日利亚牛生产系统的肉类长期产出水平。城市人口显著影响绵羊肉产量的变异性。山羊肉产量由城市人口、总人口和人均收入决定。最后,城市化与畜牧业生产之间日益密切的关系可能加剧土地稀缺和土地集约化,尤其是城市边缘地带的畜牧业生产。因此,建议在尼日利亚城市的城郊地区对畜牧业生产进行有指导的、可持续的土地集约化。应向牧民和牧场主提供农业信贷,以提高他们的生产能力,满足尼日利亚不断增长的城市人口的粮食安全需求。应促进有组织的私营部门更多地参与畜牧业价值链。
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Urban Population Growth and Per Capita Income's Effect on Nigerian Ruminant Livestock Production System
The study broadly explored the relationship between urban population growth and ruminant livestock production systems in Nigeria. It utilized aggregate time series data from World Development Indicators and FAOSTAT over a period of 53 years. Data collected were analysed with descriptive methods and Fully Modified Ordinary Least Squares (FMOLS) method. The three FMOLS models used were cointegrated. Growths in urban population, temperature change, per capita income in relationship with historical outputs of meat from cattle, sheep and goat were on the ascent right from 1961 to 2013. A major descent was observed in 1986 when the Structural Adjustment Programme was embarked upon in Nigeria. It was found that urban population, total population and per capita income significantly determined the long run output levels of meat from cattle production systems in Nigeria. Urban population significantly influenced the variability of meat production from sheep. The goat meat output were determined by urban population, total population and per capita income. Conclusively, the growing relationship between urbanization and livestock production could exacerbate land scarcity and fuel land intensification especially for livestock production in urban fringes. The need for guided, sustainable land intensification in livestock production is therefore recommended at peri-urban areas of Nigerian cities. Herdsmen and ranchers should be provided with farm credits to boost their productive capacities and meet the food security needs of the growing urban population in Nigeria. More engagement of organized private sector in livestock value chain should be promoted.
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