WildAgain Wildlife Rehabilitation, Inc.

Powdered milk replacer product tests
GNC Premium Puppy Lot# 2170 (2012)

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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


Moisture % 5.44 Solids % 14.4
Protein % 36.5 Protein % 5.5
Acid Hydrolysis Fat % 42.8 Fat % 6.5
Carbs (subtraction) % 9.82 Carbs % 1.5
Calcium % 1.24 Calcium % .19
Phosphorus % .82 Phosphorus % .12
Magnesium % .072 Ca/P Ratio 1.51
Sodium % .44 Kcals/cc (Atwater) .87
Potassium % .81 Kcals/cc (AAFCO) .80
Peroxide Value (what's this?) (Test not performed)    
Ave. dry wt grams (1 TBSP) 5.3    
Kcals/gram (Atwater) 5.70    
Kcals/gram (AAFCO) 5.26    
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. The ingredient "Latose" indicated below is identical to how it is presented on the label, though it is suspected to be a typographical error for the spelling of "Lactose". Except that Lactose is also listed further as an ingredient in the mix of added minerals and supplements(?).

Primary ingredients

Vegetable Oil, Dried Skimmed Milk, Casein, Butterfat,

Secondary ingredients DL-Methionine, L-Arginine, Calcium Carbonate, Choline Chloride, Lecithin, Magnesium Sulfate, Potassium Chloride, Monopotassium Phosphate, Salt, Tricalcium Phosphate, Carrageenan, Dipotassium Phosphate, Taurine, Ascorbic Acid, Ferrous Sulfate, Zinc Sulfate, Vitamin A Supplement, Vitamin E Supplement, Niacin Supplement, Calcium Pantothenate, Copper Sulfate, Thiamine Hydrochloride, Pyridoxine Hydrochloride, Riboflavin, Manganese Sulfate, Vitamin D-3 Supplement, Potassium Citrate, Potassium Iodide, Folic Acid, Vitamin B-12 Supplement, Biotin.


Solubility Test (what's this?)

This product showed a significant degree of insolubility and multiple levels of separation when used as an instant mix with both temperatures of water. A frothy layer of unwetted powder formed at the top of the cylinder at the line markers indicated. However, reconstitution was much improved when the product was allowed to rest for 4 hours.

Figure 1. Hotter water and longer rehydration time generally improved the reconstitution of this product. Figure 2. The consistency and flowability of the residue also improved with the hotter water temperatures and longer hydration time.


Physical characteristics

The texture of this product was clumpy, 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)).


Weight/TBSP and measurement variability

Weight (average) 5.3 grams / TBSP (large end of red scoop).
Texture and handling comments Smooth and very fine  in texture, scoops evenly and consistently.
Observed measurement variability (what's this?) Scooping error generally within +/- 8.7%.

Low error -22.2%; High error +13.9%.

Scoop or weigh? Scooping will likely not provide a consistent result, so weighing will produce a more accurate measurement.


Other comments on this product or lot

This product is a captive-brand distributed by Petsmart. The labeling is almost identical to PetAg's Esbilac, suggesting that perhaps PetAg is the manufacturer of this product.


Copyright 2012. WildAgain Wildlife Rehabilitation, Inc. All Rights Reserved unless otherwise stated.