Proximate Analysis Assignment Key

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University of Wisconsin, River Falls *

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Health Science

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Feb 20, 2024

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- Name; /< E Y Lab Section: 12L 13L 14L Animal Scielice>231 Spring 2024 Proximate Analysis Assignment Use 2 decimal places throughout To make calculations easier, please use the conversion of 1 kg = 2.2 Ib when needed Abbreviations to know: DM = dry matter, OM = organic matter, EE = ether extract Oralf) CP = crude protein, CF = crude fiber REVIEW: Use this section to work on you own. Fill in the table below for a swine diet going to the feed mill. Feed Ingredient % of diet kg Ib Corn grain 2;}’22;7 )W&? =l g 2,300 ¥ 2.2 £, 0000 Soybean meal 24,00 800 I, 700 Choice grease 2.6 95 20 ? Supplements 2.77 _ 125 Ly Total 100% 3,320 kg 7 30 v **4lways check your totals** Fill in the table below with the crude protein concentration of the feedstuff on either an as-fed or DM basis as indicated. Crude protein, % Feedstuff DM, % As-fed DM basis ~ Calculations basis ‘ 1 ©91.00 17.00 /5),(0(9 /7/0‘ G) 2 30.00 r AR, 12.00 12.% 0:.20 Fill in the table below with the INTAKE of the feedstuff on either an as-fed or DM basis as indi;:atéd. Intake, 1b Feedstuff DM, % As-fed DM basis Calculations ‘ basis 1 75.00 15.50 //@3 i s X 075 2 91.50 4.6 4.50 Y, {0/0'4/5—
- NEW MATERIAL 1. In the table below, classify each nutrient as either: vitamin, mineral, amino acid, or fatty acid. Nutrient Classification: vitamin, mineral, amino acid, fatty acid Arachidonic acid ]/ i 5 ) oty O Ir s N o YW\ vron Pantothenic acid Vi n Cobalamin : , Vi+o o v Alanine (/’ 14 1 2aY14W) &Cl g Leucine %}VV\‘I(\D (;LC,JCJA Glutamic acid Linoleic acid B inne QQJA Eatty ocid Zinc irdrond Thiamin Vo rin 2. Watch the Proximate Analysis — Percent Ash video to answer the following questions. https://www.youtube.com/watch?v=25eqoDnvoJA a. For animal feeds and grains: Muffle furnace temperature = Ashing time (hold time) = Z b0 -c hours b. It is good practice to stack the crucibles on top of one another in the muffle furnace. True False c. Using the lab data below, calculate percent ash and organic matter. Empty crucible | Sample weight Weight of Ash weight | % Ash % Organic weight (grams) | (grams) crucible and (grams) matter ash (grams) 46.25 1.98 46.38 013 lo. $7 (/\g L/g Ylp. 38 46 25 013 -6 S 7 'L9&>*JOO /OO 3. Watch the Proximate Analysis — Percent Protein video to answer the following questions. https://www.youtube.com/watch?v=K87FQf yYYE a. Which method is being demonstrated in the video: ( LECO/Combustion b. What is the combustion gas used: Oy (/J Sl Kjeldahl ol opn c. What is the carrier gas used: EDTA d. What is the internal standard used:
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