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NUTRIENT SUPPLEMENTATION WORKSHEETS
The following represents a simplified way to calculate mineral
supplements required for your horse, based upon the 1989 NRC
Standard, hay assay results, and nutrient listings from any ad
ditional feeds given. Procedural instructions appear on each page.
Note that the NRC standard is generally considered to be minimum
levels. Since no new, official standard is available, with one or
two exceptions, notated below, this System makes no effort to mod
ify the NRC figures. However, it is generally considered safe,
even prudent, to increase the calculated supplement quantities
generated by this System by some small factor, perhaps on the
order of ten percent.
The modifications to the NRC Standard incorporated here are as
follows:
Copper (Cu) is adjusted from the Standard so that Fe:Cu=4:1.
Zinc (Zn) is adjusted from the Standard so that Zn:Cu=3:1.
Manganese (Mn) is adjusted from the Standard so that Mn:Cu=3:1.
Calcium (Ca) is adjusted from the Standard so that Ca:P:Mg=5:3:3.
It has been suggested that the levels of Calcium, Phosphorus and
Magnesium as recommended by the NRC Standard should be signifi
cantly increased to bring them closer to the horses actual daily
needs. This System does NOT incorporate that recommendation. If
you choose to do so, simply edit the calculations accordingly, on
page 1 below.
The elements considered here are the primary nutrition elements
in a horses diet. There are omissions, such as Sulfur, where
there seems to be no established requirement for inorganic sulfur
(mineral form), Likewise, Cobalt and Chromium are also not con
sidered; they are required in miniscule amounts, and daily sup
plementation quantities are difficult to control.
Finally, note that special circumstances may modify a particular
horses daily requirements. Thats not taken into consideration
here; this assumes a horse of average health and condition.
PAGE 1
NUTRIENTS NEEDED WORKSHEET
(Select values from appropriate column in
Standard Values List and insert
in first column.
Results to be entered to 4th column
of Summary Worksheet [Page 4].)
Enter Body Weight(BW): ______ Kg
1. Calcium: ______ x BW = ______ g/day
2. Phosphorus: ______ x BW = ______ g/day
3. Magnesium: ______ x BW = ______ g/day
4. Potassium: ______ x BW = ______ g/day
Enter Total Daily Rations(TDR): ______ kg
5. Sodium: ______ x TDR = ______ g/day
6. Iron: ______ x TDR = ______ mg/day
7. Manganese: ______ x TDR = ______ mg/day
8. Copper: ______ x TDR = ______ mg/day
9. Zinc: ______ x TDR = ______ mg/day
10. Selenium: ______ x TDR = ______ mg/day
11. Iodine: ______ x TDR = ______ mg/day
PAGE 2
STANDARD VALUES LIST
(To be inserted in 1st column
of Nutrients Needed Worksheet [Page 1].)
Light Moderate
Maint Stallions Working Working
MACRONUTRIENTS
Calcium 0.05 0.05 0.05 0.07
Phosphorus 0.03 0.035 0.037 0.045
Magnesium 0.03 0.035 0.037 0.045
Potassium 0.05 0.065 0.065 0.075
MICRONUTRIENTS
BASED UPON HAY = 1.5% BW/DAY
Sodium 1.5 1.55 4.8 5.1
Iron 45.0 46.0 45.0 52.0
Manganese 36.0 35.0 35.0 40.0
Copper 11.0 12.0 11.0 12.0
Zinc 36.0 35.0 35.0 40.0
Selenium 0.4 0.4 0.4 0.46
Iodine 0.4 0.4 0.4 0.46
Note: 2 tbsp Iodized table salt = 36 g: gives approximately 14g Na
and 2.5 mg I. That amount of Iodine is slightly higher than the
NRC recommendation.
PAGE 3
NUTRIENTS IN HAY WORKSHEET
(Fill in 1st column with data from Hay Assay.
Use "%" figure as given, do not correct to
decimal equivalent. Enter results in
1st column of Summary Worksheet [Page 4].)
Enter Total Daily Hay Ration (TDHR) _______ Kg
MAJOR MINERALS
Calcium (Ca) _______ % x TDHR = _______ x 10 = _______ gm
Phosphorus (P) _______ % x TDHR = _______ x 10 = _______ gm
Magnesium (Mg) _______ % x TDHR = _______ x 10 = _______ gm
Potassium (K) _______ % x TDHR = _______ x 10 = _______ gm
Sodium (Na) _______ % x TDHR = _______ x 10 = _______ gm
TRACE MINERALS
Iron (Fe) _______ ppm x TDHR = _______ mg
Manganese (Mn) _______ ppm x TDHR = _______ mg
Copper (Cu) _______ ppm x TDHR = _______ mg
Zinc (Zn) _______ ppm x TDHR = _______ mg
Selenium (Se)* _______ ppm x TDHR = _______ mg
Iodine (I)* _______ ppm x TDHR = _______ mg
*Note: Selenium & Iodine are not measured by DairyOne
on standard reports.
PAGE 4
SUMMARY WORKSHEET
Use the next page to enter your numbers that you've developed,
and to determine which minerals are high and need to be compen
sated for, and which are low and need to be supplemented.
Data for columns 1 and 4 come from Worksheets 1 and 3. Data for
column 2 is determined from total of all other daily rations and
supplements. Add columns 1 and 2, place sums in column 3.
If an amount in column 3 is LESS than the amount in column 4,
then the difference is how much of that mineral should be added
to the horses diet each day. Enter that number to column 5. How
ever, if the amount in column 3 is GREATER than the amount in col
umn 4, that means tyhe total daily ration is higher in that
element than the standard recommends. Enter it to column 6.
This System does not evaluate excesses and make specific recommen
dations; instead, it is suggested that outside help be solicited.
One good source for such help is on the EquineCushings Forum in
Yahoo Groups. Be careful not to consider entries in column 6 when
you prepare your actual nutrient list.
If you plan to increase the amounts recommended by the Standard,
do so here, in column 4. Examining the figures will indicate that
a 10 percent increase in the figures in column 4 will generally
not have a significant bearing on the amount to be supplemented
(column 5).
Finally, if you plan to increase the Standards calcium, phos
horus and magnesium numbers, column 4 is the place to do it,
before you complete the calculations. That change can have a
significant bearing on the supplementation recommendations for
those three elements.
PAGE 5
Deficient: Excess:
Nutr. Nutr. Nutr. Amount of OR Amount in
In Other Total Needed Nutr. to Excess
Hay Source Nutr. Per Wksht Supplement
Ca _____ g + _____ g = _____ g - _____ g = _____ g _____ g
P _____ g + _____ g = _____ g - _____ g = _____ g _____ g
Mg _____ g + _____ g = _____ g - _____ g = _____ g _____ g
k _____ g + _____ g = _____ g - _____ g = _____ g _____ g
Na _____ g + _____ g = _____ g - _____ g = _____ g _____ g
Fe _____ mg+ _____ mg= _____ mg- _____ mg= _____ mg _____ mg
Mn _____ mg+ _____ mg= _____ mg- _____ mg= _____ mg _____ mg
Cu _____ mg+ _____ mg= _____ mg- _____ mg= _____ mg _____ mg
Zn _____ mg+ _____ mg= _____ mg- _____ mg= _____ mg _____ mg
Se _____ mg+ _____ mg= _____ mg- _____ mg= _____ mg _____ mg
I _____ mg+ _____ mg= _____ mg- _____ mg= _____ mg _____ mg
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