Consider the chemical analysis for the different feeds that you have at your

Consider the chemical analysis for the different

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Consider the chemical analysis for the different feeds that you have at your disposal (Table 2); c. Calculate the N.R. for each of the feeds using the formula above; d. Your goal is to supply the cow with a mix of roughage and concentrate that is as much close as possible to the nutritional needs that you have identified in point (a), including the N.R, and the nutritional content of each feed; e. To constrain the possible choices, I prepared a table (Table 3), pre-filled with the amounts (in lbs.) of each feed. The Feeding Ration will consists of 2 roughage-type food + 2 concentrate. Once you have selected a mix (i.e. decided which roughage-type and concentrate you need), you will also have to calculate the N.R of the mix. The latter will have to be as close as possible to the one the cow needs (Table 1), otherwise your mix is not the correct one. NOTICE : the analysis in Table 2 are given in percentages, BUT the nutritional needs in Table 1 are given in lb., so you can’t use the numbers in Table 2 directly 3 . You will have to use them to figure out what is the content of DM, proteins, carbs, etc. in each pound of the particular food you select first 4 . Then you can apply this to Table 3, where the pounds of each food to be used for the mix are reported. 1 If you do not have Excel ä , you can use any other software as long as you save the final file in Excel ä format. 2 All the tables reported here at the end of the instructions, have been included in the Excel ä file, with additional comments to help you. 3 If you have problems in envisioning how to do this, consider: Table 2 gives you the % composition of foods. So imagine you have 100 lbs. of a particular food, and that someone tells you that 30% is made of X, 60% is made of Y and 10% is made of Z. How many pounds of each (X, Y and Z) do you have? Now the same someone gives you 30 lbs. of the same food. How many pounds of X, Y and Z do you now have? [You’ll have to do this for Table 3] 4 The whole exercise requires a trial and error approach. You will have to try different combinations of the provided foodstuff in order to find the one that works. It’s not too different from what farmers used to do in real life.
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- 3 - Problem 2 : Calculate the daily expenditure for feeding the cow, based on your previous calculations and
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