Waltham - for anyone who does not know is a "LEADING" Dog and Cat Food Manufacturer - brands like Nutro...Whiskas....Royal Canin... Pedigree etc..
Interesting enough a majority of petfood companies are somehow associated or owned by Human Food Companies..... it is a well known fact that these Human food Companies use their wastes to produce pet food...http://www.bornfreeusa.org/downloads/pdf/PetFoodReport_05-07.pdf
Nestlé’s bought Purina to form Nestlé Purina Petcare Company (Fancy Feast, Alpo, Friskies, Mighty Dog, Dog Chow, Cat Chow, Puppy Chow, Kitten Chow, Beneful, One, ProPlan, DeliCat, HiPro, Kit’n’Kaboodle, Tender Vittles, Purina Veterinary Diets).
• Del Monte gobbled up Heinz (MeowMix, Gravy Train, Kibbles ’n Bits, Wagwells, 9Lives, Cycle, Skippy, Nature’s Recipe, and pet treats Milk Bone, Pup-Peroni, Snausages, Pounce).
• MasterFoods owns Mars, Inc., which consumed Royal Canin (Pedigree, Waltham’s, Cesar, Sheba, Temptations, Goodlife Recipe, Sensible Choice, Excel).
Other major pet food makers are not best known for pet care, although many of their house hold and personal care products do use ingredients derived from animal by-products:
• Procter and Gamble (P&G) purchased The Iams Company (Iams, Eukanuba) in 1999. P&G shortly thereafter introduced Iams into grocery stores, where it did very well.
• Colgate-Palmolive bought Hill’s Science Diet (founded in 1939) in 1976 (Hill’s Science Diet, Prescription Diets, Nature’s Best)
Private labelers (who make food for “house” brands like Kroger and Wal-Mart) and co-packers (who produce food for other pet food makers) are also major players. Three major companies are Doane Pet Care, Diamond, and Menu Foods; they produce food for dozens of private label
and brand names. Interestingly, all 3 of these companies have been involved in pet food recalls that sickened or killed many pets.http://www.animalrightsafrica.org/Archive/PetFood/FoodPetsDieForBiophile14FINAL.pdf
Do yourself a favour a visit this link and see their review on the dog or cat food you feed.... they even comment on each food ingredient used in the foods and why you should not use them... (they are updating their web at the moment, so try later on)http://www.dogfoodanalysis.com/dog-food-index-a.html
Masterfoods - which owns Waltham is yet again in trouble.....http://www.consumeraffairs.com/news04/2009/04/nutro_foia.html
You can also check which brands of foods have been recalled, and just how many times it is the same companies involved....http://www.fda.gov/oc/opacom/hottopics/petfood.html#recall
When formulating feeds, some, or should I say many Nutritionists work on a "Least Cost Formulation"http://www.labdiet.com/factsonformulation.htm
This formulation does not mean the the food has a high digestibility.... or even whether the ingredients used are able to be digested by the animal... the same goes with many fish foods.....
Personally I do not understand - "not wanting a food to be digestible - and as highly digestible as possible" - this just makes no sense... Chris perhaps you can share with us why any nutritionist would not want a food to be as digestible as possible? Surely the intention is for the animal / fish etc to be able to assimilate and absorb all the nutrients possible - thereby producing less waste?
When you say "would you rather the fish digests more of the protein or digests more of the carbohydrates" - the fish should be able to digest ALL the nutrition in the food........ the food should be balanced and complete - after all in 90% of cases this is the only food they are eating! If there is too much carbohydrate or the food is not balanced ..... then there is a problem with the formulation.......
I also do not understand why "a large poo - is better than a small one"?
Perhaps you can help me understand this?
Sadly you mentioned a company which to the best of my knowledge is a Dog and Cat Food manufacturer - and not a Koi Food manufacturer..... what specific studies have they done on Koi Food Nutrition? And their research and current dog and cat food has been linked to possibly causing a host of diseases and ailments in dogs and cats - something that they specialise in.........
So I am sorry if I do not have any confidence in "Dog and Cat Food" Companies, let alone any which have been linked to the death or illnesses of Cats and Dogs...
And I quote Dr Pitcairn " As you see, by itself the chemical anaylsis on a label does not mean a whole lot. To underscore this point, one veterinarian concoted a product containing the same composition of the basic proteins, fats and carbohydrates as a common brand of dog food by using "Old Leather Shoes, Crankcase Oil and Wood Shavings."......
Does anyone think that a dog eating this diet would actually get all the nutrients is requires? Let alone whether it would be able to digest it? And I question how long it would live?
The Guaranteed Analysis shown on the information panel of a pet food package tells you how much crude protein, crude fat, fiber, and other vital nutrients are included in your pet's food. It does not, however, provide information about ingredient digestibility. Digestibility, expressed as a percent, is a measure of the amount of food retained in the body after it has been eaten. For example, if a dog eats 8 oz. of food, and produces 3 oz. of stool, the food's digestibility is 63% (the difference between the weight of food eaten and the weight of stool produced, divided by the weight of the food). The digestibility of protein and fat can vary widely depending on their sources.
When I looked up the importance of digestibility on google..... I got:
"Nutrient composition and digestibility are of crucial importance for health and well being of animals."
"Many people make the mistake of judging the quality of a pet food simply by looking at the percentage of protein shown on the label. This is not the best way to judge overall quality for several reasons:
Not all protein is created equal.
Higher protein percentages do not automatically mean higher quality food - the right level of protein for your particular pet is what matters.
Other nutrients levels are necessary for overall health and the proper use of protein by the body.
Let's take a closer look…
Not all protein is created equal
What would you rather feed your pet - four ounces of real chicken meat or four ounces of ground chicken feathers and corn? All three ingredients contain protein, but they are definitely not equal. Ounce for ounce, the real chicken provides more protein, and the protein is highly digestible and usable, allowing pets to eat smaller quantities to receive the optimal level of protein.
In contrast, the ground feathers contain protein, but in a nondigestible form. Digestibility is key to evaluating a protein's nutritional value. Real meat offers highly digestible protein - protein that is easily broken down by your pet's body. Your pet cannot digest and cannot live on the protein contained in feathers. It simply passes through the digestive system unused.
Utilization is another key to evaluating protein sources. Corn has digestible protein that is absorbed, but it is not as usable by the body as the protein from meat or eggs. Corn must be combined with another grain to supply the range of essential amino acids that meat or eggs supply by themselves. Pets will need to eat larger quantities of corn and other grains to obtain the same amount of usable protein that is in chicken.
When comparing pet foods, be sure to consider the type and quality of protein used - not just the quantity. Look for foods with highly digestible, usable protein. Real meat, fish, and eggs, for example, provide your pet with the highest levels of usable protein, while allowing you to feed lesser quantities of food.
Different pets have different protein needs
Many people wrongly assume that a pet food with a high protein level is automatically better for their pet. This is incorrect for two reasons. First, as described above, the quality of the protein is a critical factor - it doesn't matter if a food has a high percentage of protein if the protein comes from a less-digestible or less-usable source. Secondly, optimal protein levels for different life stages and activity levels vary. Senior pets generally require less protein than active adult pets; and active adult pets need less protein than puppies and kittens. Look for a food that provides the optimum level of protein for your pet's particular life stage and activity. Otherwise, you'll feed your pet excess protein that will simply be converted into fat.
A diet must be balanced
Protein is important, but so are the many other essential nutrients in food. Pets cannot live on protein alone. Calories, fats, carbohydrates, vitamins, and minerals must all be present in the proper levels and ratios for your pet to have a balanced diet and properly use the protein in the food.
Choose your proteins with care
Be a critical thinker when it comes to evaluating the protein in your pet's food - first determine whether the protein is derived from a high-quality source that will give your pet the maximum amount of usable, digestible protein. Then, look at the protein percentage to see how much protein the food includes. Remember, a high protein percentage does not guarantee a healthy, beneficial pet food, especially if it merely shows a high percentage of a lesser-quality protein. Finally, don't forget to look at the other nutrients. Your pet may not be able to use the protein as well if other nutrients are lacking."
I am assuming that the same goes for Koi?
I could be wrong?