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巴西养牛业的动态

Dynamics of Cattle Production in Brazil.

作者信息

McManus Concepta, Barcellos Júlio Otávio Jardim, Formenton Bruna Krummenauer, Hermuche Potira Meirelles, Carvalho Osmar Abílio de, Guimarães RenatoFontes, Gianezini Miguelangelo, Dias Eduardo Antunes, Lampert Vinícius do Nascimento, Zago Daniele, Neto José Braccini

机构信息

INCT-Pecuária, Universidade de Brasília, Brasília, DF, Brasil.

NESPRO, Departamento de Zootecnia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brasil.

出版信息

PLoS One. 2016 Jan 27;11(1):e0147138. doi: 10.1371/journal.pone.0147138. eCollection 2016.

Abstract

Movement of livestock production within a country or region has implications for genetics, adaptation, well-being, nutrition, and production logistics, particularly in continental-sized countries, such as Brazil. Cattle production in Brazil from 1977 to 2011 was spatialized, and the annual midpoint of production was calculated. Changes in the relative production and acceleration of production were calculated and spatialized using ARCGIS®. Cluster and canonical discriminant analyses were performed to further highlight differences between regions in terms of cattle production. The mean production point has moved from the Center of Minas Gerais State (in the southeast region) to the North of Goiás State (in the Midwest region). This reflects changes in environmental factors, such as pasture type, temperature and humidity. Acceleration in production in the northern region of Brazil has remained strong over the years. More recently, "traditional" cattle-rearing regions, such as the south and southeast, showed a reduction in growth rates as well as a reduction in herd size or internal migration over the period studied. These maps showed that this movement tends to be gradual, with few regions showing high acceleration or deceleration rates.

摘要

在一个国家或地区内,畜牧生产的转移对遗传、适应性、健康、营养和生产物流都有影响,在巴西这样的大陆型国家尤为如此。对巴西1977年至2011年的养牛生产进行了空间化处理,并计算了年度生产中点。利用ARCGIS®计算并空间化了相对产量变化和产量加速度。进行了聚类分析和典型判别分析,以进一步突出各地区在养牛生产方面的差异。平均生产点已从米纳斯吉拉斯州中部(东南部地区)转移到戈亚斯州北部(中西部地区)。这反映了环境因素的变化,如牧场类型、温度和湿度。多年来,巴西北部地区的生产加速度一直很强劲。最近,在研究期间,“传统”养牛地区,如南部和东南部,显示出增长率下降以及畜群规模缩小或内部迁移。这些地图显示,这种转移往往是渐进的,很少有地区显示出高加速度或减速度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8bd2/4729521/b32ac47303e0/pone.0147138.g001.jpg

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