WildAgain Wildlife Rehabilitation, Inc.


Powdered milk replacer product tests
Esbilac® Lot# 0919E

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Proximate Analysis, Minerals and Calories (click here for Midwest Lab report )

The table below indicates the values for test results from Midwest Labs, plus calculated values for components in a formula mixed at a ratio of 1:2 with water using WildAgain's nutrition calculator. The Kcals are calculated using both the standard Atwater calculation as well as the modified Atwater as prescribed by AAFCO.

Component (dry powder) (Midwest Lab Report) Rehydrated @ 1:2 water

Calculated

Moisture % 5.95 Solids % 15.0
Protein % 35.5 Protein % 5.7
Acid Hydrolysis Fat % 41.5 Fat % 6.6
Carbs (subtraction) % 11.6 Carbs % 1.9
Calcium % 1.34 Calcium % .2
Phosphorus % .86 Phosphorus % .1
Magnesium % .097 Ca/P Ratio 1.56
Sodium % .53 Kcals/cc (Atwater) .89
Potassium % 1.23 Kcals/cc (AAFCO) .82
Peroxide Value (what's this?) 2.56    
Ave. dry wt grams (1 TBSP) 5.6    
Kcals/gram (Atwater) 5.62    
Kcals/gram (AAFCO) 5.18    
Cells shaded in light blue indicate values from tests performed by Midwest Labs, Omaha, NE.

 

Ingredients (what's this?)

The table below indicates the primary ingredients for the lot number indicated.

Primary ingredients

Vegetable oil, casein, whey protein concentrate, dried skimmed milk, butter fat.

Secondary ingredients

Monocalcium phosphate, egg yolk, calcium carbonate, L-arginine, DL-methionine, sodium silico aluminate, potassium chloride, choline chloride, lecithin, monopotassium phosphate, magnesium carbonate, ferrous sulfate, salt, dipotassium phosphate, calcium pantothenate, ascorbic acid, niacin supplement, magnesium sulfate, zinc sulfate, folic acid, vitamin E supplement, silicon dioxide, vitamin A supplement, riboflavin, vitamin B12 supplement, thiamine hydrochloride, pyridoxine hydrochloride, manganese sulfate, vitamin D3 supplement, copper sulfate, potassium citrate, potassium iodide, biotin.

 

Solubility Test (what's this?)

This lot is one of the first produced after PetAg moved to a single step drying process. As shown below, the powder did not perform well as an instant mix as indicated on the product label. See the notes under each photo below.

Figure 1. As shown above, significant separation occurred when the powder was mixed with either temperature of water when prepared for immediate use. Additionally, the unwetted powder that floated to the top of the cylinder formed a hard cap or seal. When the formula was allowed to rest for 4 hours in the refrigerator, the powder appeared to be fully reconstituted at either water temperature. Figure 2. Less residue (unwetted powder) was observed when the cylinders were emptied after 30 minutes for the samples using hotter water and allowing to rest for the 4 hours.

 

Physical characteristics

The texture of this product was uneven and inconsistent. This resulted in measurement error described below. (The expected error shown below is equal to 1 standard deviation (statistically 68% of all measurements should fall within this range)).

Texture

Weight/TBSP and measurement variability

Weight (average) 5.6 grams / TBSP (large end of red scoop).
Texture and handling comments Clumpy, scoops unevenly and inconsistently.
Observed measurement variability (what's this?) Scooping error generally within +/- 4.5%.

Low error -12.3%; High error +5.3%.

Scoop or weigh? Weighing (rather than scooping) will produce a more accurate measurement.

 

Other comments on this product or lot

None at this time.

 

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