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为提高猪粮比价对生猪产业政策调控的精准性与敏感性,分析猪粮比价作为制定生猪养殖调控政策的弊端发现:应用猪粮比价来制定相应生猪养殖补偿政策,只有在玉米、小麦、稻谷维持同样生产趋势时,才可起到应有的作用,一旦发生玉米价格与小麦或稻谷价格变化不同步,就会对生猪市场价格波动调控起到负面影响。引入总可消化养分校正值(TDNc)测算公式并测算玉米及其可替代主要原料小麦、水稻的TDNc数值,结合市场原料价格,得出可以精确评价几种主要能量饲料替代玉米合适时机的公式Cx=Px/TDNcx-P玉米/99.16,可使应用猪粮比价作为制定调控政策依据的敏感性提升。
In order to improve the accuracy and sensitivity of the regulation of pigs ’industrial policy on the ratio of pig’s grain to pig’s price, it is found that the pig’s ratio of pigs’ Maintain the same production trend, it can play its due role, once the corn prices and wheat or rice price changes are not synchronized, it will have a negative impact on the regulation of pig market price fluctuations. Introducing the formula of total digestible nutrient correction (TDNc) and calculating the TDNc of maize and its alternative main raw materials, wheat and rice, and combining with the market raw material prices, we can get the formula that can accurately evaluate the suitable timing of substituting several major energy feeds for corn. = Px / TDNcx-P corn / 99.16, the sensitivity of pig food and grain parity as a basis for regulation and control policy can be improved.