I am going to start with there is no short answer when it comes to ideal nutrition, my answer can go on for a 100 pages and not cover all so will include several links. I have spent almost 7 years myself digging up info on nutrition, and it is changing alot in the last few years due to new research breing released over the last 7 years so lot of info is now out of date because of the new findings, in the last 10 years researchers having been just recently been relooking at dog food and actually doing their studies on dogs, old food research had been done some 70 years ago but they used rats to decided what was good for dogs(which is why most foods average around 24% protein 12% fat and have lots of grains) the new research is showing this is not good for dogs can lead to kidney failure, weak muscles and joints as they age and cause joint inflamation and the grains also are the leading cause of obesity yet diet food increase the amount of grains and lower the protein and fat and can actually as a result add diabetes to their problems on top of it, I do beleive a lot of the new research was based because of the growing number of owners that were feeding raw diets and vets noticed the dogs were healthier and less aging problems than kibble feed dogs which has lead to the creation of high protein grain free foods about 6 years ago
Half way down in my answer read some of the nutrition info about the research from the B Naturals website
Okay you want an honest opinion on your food , is it crap
Read the comments here about it
http://www.dogfoodanalysis.com/dog_food_reviews/showproduct.php/product/872/sort/8/cat/6/page/2
It is listed as a 2 star quality food, as the article said made from poor quality ingredients like brewers rice(leftovers from making beer) , cellulose(which is often ground up peanut shells, no nutritional value just used as a filler, you are being charged money for recycled garbage ) corn (which many dogs are allergic to)
It is made from animal feed quality ingredients rather than human grade ingredients
There is not much that Petsmart sells that is high quality , most of the foods they carry are very heavy on the grains and low on meat. You need to find small petfood stores as they generally sel the high quality foods
Kirkland Signature brand from Costco exact same food as Diamond Naturals listed as 3 star quality foods
would cost you less money and has better quality ingredients it is not great but definitely a better food http://www.dogfoodanalysis.com/dog_food_reviews/showproduct.php/product/932/sort/8/cat/5/page/9
Other thing don't feed a lite food all you are doing is paying more for more grains and less meat, dogs need the fat for energy instead feed a regular food but cut back the amount fed and with some dogs the extra grains in diet foods will make many of them even fatter and can result is the dog becomin g diabetic ,http://www.dogfoodanalysis.com/dog_food_reviews/index.php/cat/1
I suggest picking a food from the 5 or 6 star category foods
this site has a store locator http://www.canidae.com you can use this to find a place near you that sells high quality foods Canidae is also a very high quality food listed in the 5 star category
With better quality foods you must read to see how much to feed and use his ideal weight not his current weight you night need to adjust the amount after your have been on the food for a bit to tweak how much you need to feed and use an actual measuring cup to measure out the food, some peopole make the mistake of using mugs to measure out food , if a 12 oz mug it is actually equal to 1 1/2 cups
adoll12 grading system is okay somewhat but there are flaws in it, espescially with what is credited as written about by the dog food project here http://www.dogfoodproject.com/index.php?page=grading_kibble
If you really want to understand more about dog food to know what makes one good and another bad these are good sites to read
http://www.dogfoodproject.com
http://dogaware.com/
Earl Wolf put together info to explain about how the reading dog ingredient labels http://www.doberdogs.com/menu.html
B Naturals http://www.b-naturals.com/newsindex.php has published several newsletters on nutrition that involved the newest research on nutrititional needs and studies done on dogs most of the brands dog foods(alpo, purina, hills) based their formulations protein fat and carbs on studies that had been done on rats not dogs, this is research that has only been really focused on in the last 10 years, and has caused the introduction of the new generation of commercial based on the new research this is the foods foods listed in the 6 star category in dogfood analysis or under dogfoodproject.com under grainfree foods
About 5 years ago I had one of my dogs on Nutro Natural Choice lite to lose weight he was up to 96 lbs but was eating the recommended amount for a 20lb dog to lose weigh and was still gaining a pound a month and it was causing him to become more lethargic his coat looked like crap his muscle tone was crap the formulation was protein 16% , 6 % fat I was afraid then if I kept feeding he would die early, I had him tested for thryroid disease, x-rayed and had ultrasounds done to see if somethng else may be causing, I finally made a total switch and went the extreme opposite and starting feeding him the newest food on the market then EVO which was the first high protein grain free food on the market then, it was more the double the calories feeding the exact same amount but his weight start to drop and his energy and health picked up.
Later we switched him and the rest of the gang to the EVO RM which is beef based which the grading system adoll12 wrote said is bad, to me red muscle meats are the ultimate protein for dogs it helps to build muscle mass especially needed in seniors whose bodies become less effecient at metabolizing protein so they need good sources of highly digestable proteins in higher amounts for dogs that already have bad joints eg hip displaysia or injured joints loss of muscle has devasting effects on their mobility, so they need increased meats particularily red meats to help maintain the muscle inorder to support their joints so they can remain mobile and active
He is 10 years old now lost 12 lbs and looks and acts healthier than he did at 5 years old and still loves chasing after squirrels and rabbits, I doubt he would have been alive and well today if I had continued to feed him the Nutro lite . http://i3.photobucket.com/albums/y53/mleg2001/the%20gang/P10100161.jpg
This picture of my other 2 shows how good of condition their coats are (easier to visually see on black dogs) http://i3.photobucket.com/albums/y53/mleg2001/the%20gang/P1010008-1.jpg
Asking my vet about nutrition would not help me his classes where put together by Hills and done some 20 years ago he spent 7 years in universty with a 2 hour course on nutrition, he has never read any of the new research on protein requirements for dogs so he would be the least able to help me choose a food, he would tell me I need to put my seniors on low protein low fat foods because that was what he was taught in school. but he does not question their diets with me because they are physically in good shape their weight and muscle tone is good and all their blood work is excellent, he is still scratching his head trying to understand why the x-rays in my dogs are not showing the same levels of arthritis he typically sees in other 10 year olds, instead they look like the x-rays of dogs that are 5 and 6 year old. If the day comes where he does ask me about their diets and starts to argue that the protein and fat is way to high and that it is harming my dogs, I can than tell him to look at all the tests results of x-rays and bloodwork again and compare them with dogs the same age eating low protein/fat diets I have purposely requested yearly bloodwork for a reason to prove to myself that choosing a high protein/high fat food was the right choice Sunny's thyroid levels were borderline low before now in the normal range, Maya has Lupus which she had when I adopted her, it is an autoimmune disease I have had her for 3 1/2 years she was only on steroids for 3 days normally a dog would be on daily for life which overtime it destroys the kidneys and shuts down the immune system, and leads to an early death, but I have controlled with diet she still has flared ups but they are managable with topical oinments, I had a dog years ago with, that was treated using the steroids the effects are horrible, I don't mind occassional use to get flare ups under control but not daily if it can be avoided, so I have even proven diet has a strong role is disease mangement, so even though his textbooks may say the diet is bad tests, physical exams and health records on my dogs would prove otherwise
Best I can suggest is do some reading and then choose a food that you feel comfortable with, everyone has their own reason for choosing a food and their choices may be different even after reading all the same info
I had considered a natural raw diet but my work hours and traveling time to go buy supplies would not work easily into my schedule but I had concerns about bacteria load of a raw diet on my auto immune girl so decided it was not a convenient or comfortable choice for me so chose a high protein diet that was closer to a raw diet in formulation. Another person may feel their dogs do well with grains and provides more fiber so may see spending as much money on a grain free is unnecessary but still want holistic style foods so choose foods like Eagle Pack, Wellness, Solid Gold, Canidae, Innova etc, they are still good foods with a good meat content
Another point to mention is there is no one food that a 100% of dogs with do good on, some may be sensitive to certain ingredients, formulations of omega fats vary so one dog will have dry flakey coats on and the other will have a beautiful coat on, fiber varys so some dogs may never firm up on sertain food even after a 2 months trial, or they simply do not enjoy the taste of a particular food so it can often take a couple trials to find the one that is right for your dog.