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本文借助四川生猪生产及价格监测预警系统,对全省68个生猪主产县从2008年5月监测之日起至2014年4月底,共计310周72个月(6年)的生猪及饲料价格周报、生猪生产月报原始数据逐一汇总,按类别、月度等进行了价格涨跌及生猪存出栏量月增减的环(同)比。旨在探寻养殖过程中饲料原料及配合料之间、生猪各阶段之间的价格涨跌、价格涨跌与存出栏量增减的内在联系,为深入研究抛砖引玉。(一)价格涨跌频次的环同比1.周均价涨跌频次的环比。从表1看出310周均价环比呈以下特征:
In this paper, Sichuan pig production and price monitoring and early warning system, the province’s 68 major pig-producing counties in the province from the monitoring date in May 2008 until the end of April 2014, a total of 310 weeks and 72 months (6 years) of pigs and feed prices Weekly, raw pig production monthly summary of the original data one by one, according to the category, monthly prices and other changes in the amount of live pigs increase or decrease the ring (same) ratio. The purpose is to explore the breeding process of feed ingredients and ingredients, between the various stages of the pig price changes, the price changes and keep the amount of the column increase or decrease the intrinsic link for further study. (A) the price change frequency of the ring year-on-year 1. The average weekly price change frequency of the ring. From Table 1, it can be seen that the average price of 310 weeks is the following: