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一、用线性规划法制定饲料配方的必要性随着商品经济的发展,牧业生产也逐步走上了规模化、集约化生产的路子。在集约化生产条件下,饲料搭配必须合理,才能提高饲料报酬取得好的经济效益。否则将出现营养缺乏和营养过剩。前者导致畜禽生长受阻、发育迟缓、产量下降,或发生疾病乃至死亡;后者导致饲料成本上升,资源浪费,经济效益低。在规模化、集约化生产条件下,畜禽日粮必须是全价配合饲料,即各种饲料营养成份互补,营养全面,能够满足畜禽生长发育及生产的需要。目前不少饲养场或专业户搭配饲料时,多应用有关资料上现成的经验配方。经验配方虽然各种营养物质能够满足畜禽生长发育及生产的需要,但经济效益却不一定太好。这是因为:
First, the use of linear programming law formulated the necessity of feed formula With the development of commodity economy, animal husbandry production has gradually embarked on a large-scale, intensive production path. Under intensive production conditions, the feed mix must be reasonable in order to improve feed returns and achieve good economic returns. Otherwise, there will be nutritional deficiencies and overnutrition. The former leads to obstruction of growth of livestock and poultry, sluggish growth, decreased production, or disease and even death; the latter leads to increased feed costs, waste of resources and low economic benefits. Under the conditions of large-scale and intensive production, the ration of livestock and poultry must be the full-price compound feed, that is, the nutritional components of various feedstuffs are complementary to each other and nutrition is comprehensive so that they can meet the needs of the growth and production of livestock and poultry. At present, many farms or specialized households with feed, the application of more information on the ready-made experience formula. Experience formula Although a variety of nutrients to meet the needs of livestock and poultry growth and production, but the economic benefits are not necessarily good. This is because: