Sincerely ask the teachers ~~ can you help me explain how to calculate the nutritional value of pig formula?

Is the calculation method of all feed formulations the same? Don't be too esoteric. I just want to know some methods of calculation. I am very grateful to my predecessors for being honest and well-behaved, but now people are smart-miscalculation and miscalculation (that is, they can do whatever they want). So the calculation method of the formula is both simple and esoteric. Shenleish was published on 2009-11-20 14:44. Thank you. There are a lot of formula software very convenient now, but I just want to ask about the method of calculating the nutritional value of the formula-- the simpler things are, the more confidential they are. Ha ha-know the nutritional value of each raw material, know the nutritional requirements of animals at a certain stage, know which raw materials can not exceed a certain value, know the changes of animal nutritional needs in different seasons, know the formula cost you need to control, and know the feed process parameters. Of course, the nutritional value of each animal is different, and the index is also different. So do you say there is an easy way-- look forward to it with the landlord-- just buy a recipe software? Is it really that simple? -- Yes-- it's good to buy the right recipe software. -- Yes, it's very simple. Buy a software and you can make a formula with the click of a mouse. That effect can be said separately.