EHAL Magazine May 2019

Everything Horses and Livestock Magazine ®

PPM (PARTS PER MILLION) AND PERCENT I receive many questions about how to calculate milligrams or gram units of a specific nutrient the following example:

is not a unit of intake, it only calculates the units. The following example is how to go from feeding rate to lb. of nutrient per day, then to oz per day and finally to gm/day:

Feeding rate – 4.0 lb./day PPM concentration of a nutrient - 40 4.0 lb. divided by 2.205 = 1.81 kg feed per day 1.81 kg = 1,810 gm = 1,810,000 mg. 1.81 kg X 40 = 72.4 mg/day

available per day from Total Equine. In order to explain this, there are several basic metric and English units that are required to know. The following is how mg or gm/day are calculated. First, one must know the units and how they are related. PPM = mg (milligrams) per kg (kilogram) 1 kg = 1,000 gr (grams) 1 gm = 1,000 mg In order to find gm or mg per day in a feed that is fed in lb. (pounds) per day it needs to be converted from lb. to kg. 1 lb. = 2.205 kg 1 lb. = 454 gm = 454,000 mg1

Feeding rate – 4.0 lb./day Percent concentration of

For larger units and calculating from percent to gm/day is as follows: Feeding rate – 4.0 lb./ day Percent concentration of nutrient – 0.8% 4.0 lb. divided by 2.205 = 1.81 kg/day 1.81 X 1,000 gm/kg = 1,810 X .008 (percent) = 14.48 gm/day 14.48 gm divided by 28.4 = 0.51 oz/day Another question I get is percent, “is that per day”? This one is simple to calculate. First of all, percent

Total Feeds Product Information Booklet by Better Equine

lb. = 16 oz (ounces) 1 lb. = 16 oz (ounces) 1 oz = 28.4 gm

Feed is fed in lb./day, so first it must be converted to kg, then to mg and finally to mg/day as in

Copyright 2016 Total Feeds Product Information Booklet by Better Equine All Rights Reserve d

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