|
|
![]() |
|
|
|||||||
| Home | Register | Blogs | Social Groups | Bird Shows & Event Calendar | Toplist | Mark Forums Read | Links Directory |
![]() |
|
|
|
LinkBack | Thread Tools | Display Modes |
|
||||
|
NUTRITION 101 – FIRST: The Myth of Vitamin C
Before I babble further, let me give you some background information regarding nutrition. First of all, everyone knows Vitamin C is very important for people, so they are forever trying to get their birds to eat citrus fruits. However, the truth is most animals don't need vitamin C supplementation in their diet, because they manufacture their own. The only animals I know of that don't make their own are the primates (that includes us, folks) and Guinea pigs. Most avian vets agree that healthy par-rots have no demonstrable need for vitamin C in their diets. So you don't need to worry any more if your parrot doesn't like oranges. (However, if your bird is sick, your avian vet may recommend vitamin C supplementation -- especially if there is any liver involvement.) SECOND: The Calcium to Phosphorous Ratio Of all the mineral interrelationships, the most critical in companion bird nutrition (and in most other species) is the relation between calcium and phosphorous. To maintain strong bones and pro-per health, the ratio of calcium to phosphorous should be within a range of 1�:1 to 2:1. [Richie, Harrison and Harrison, p.66] This means that a parrot needs about 1� - 2 times as much calcium to phosphorous in their diets. So if you feed something high in phosphorous -- like seed, for in-stance, or some of these cooked bean/corn/rice diets for pet birds, then you need to counteract the high phosphorous intake by getting your feathered friend to eat 1� -- 2 times as much calcium-rich foods like beet greens, mustard greens and broccoli tops. THIRD: Calcium & Phosphorous Plus Vitamin D3 The calcium to phosphorous ratio is critical, but there is another factor that enters into the equation, and that is vitamin D3. Vitamin D3 is the vehicle by which the body can absorb calcium and phosphorous from the diet, so it's crucial that adequate vitamin D3 be available. According to Richie, Harrison and Harrison (again), "Inadequate vitamin D3 levels in the body can cause calcium deficiency symptoms in an otherwise calcium-adequate diet." (p.67) Sources of vitamin D3 are simple: unfiltered sunlight (i.e., not through glass or plastic, so sunlight through a window does not count), full-spectrum lighting, avian vitamin supplements and pelleted or extruded diets for birds. FOURTH: Vitamin A By far the most common vitamin deficiency seen in avian medicine in this country, vitamin A is critical to a healthy immune system, and maintaining cell wall integrity in the mucus membranes, among other things. The mucus membranes cover the gastrointestinal and respiratory tracts, functioning to protect the organism from outside invaders or pathogens. Classic signs of vitamin A deficiencies (hypovitaminosis A) in parrots include signs of upper respiratory disease, and abscesses in the mouth. Reptile Book Food Chart -- Fact vs. Fiction Well-known reptile veterinarian Frederick Frye included an extremely interesting nutritional chart in his recent book Iguanas: A Guide To Their Biology And Captive Care, [1993]. It offered nutritional breakdowns for a variety of foods, and much of it was based on the US Department of Agriculture publication called "Composition of Foods" [Hand-book Number 8]. This chart was quite an eye-opener for me, considering what I thought was nutritionally valuable as opposed to what actually turned out to be. The chart outlined the content of several nutrients -- vitamins A, B1, B2 and C, as well as the minerals calcium, phosphorous and iron, plus grams of protein -- in each of a wide variety of vegetables and fruits. People, lemme tell you, I was amazed. For instance, those apples that are supposed to keep the doctor away are simply pitiful nutritionally. Essentially sugar water and a little fiber. There were many items I had thought were nutritious, but turned out not to be -- things like oranges, grapes, pears and grapefruit (and I always feel so sanctimonious when I eat grapefruit!]. Bananas, another favorite on the parrot hit parade, has 3� times as much phosphorous as calcium. This means the human has to feed and the bird has to eat, 5-7 times as much calcium-rich foods to counteract it. Grapes are also a problem, with twice as much phosphorus as calcium. Yellow peaches had a nice shot of vitamin A (1000 IU [international units] in 3 halves), but white peaches had only a 1/10th as much at 100 IU. Otherwise, the two were identical nutrition-ally. (Neat, isn't it? The white peach is considered to be a wonderful achievement for fruit growers, but in removing the color they removed the only nutritional value of the fruit! And this is supposed to be an improvement?? Humans are so cool, sometimes, aren't we?) Good Nutritional Values for Veggies On the other hand, vegetables did really well nutritionally. Green beans were OK but not great, but beet greens had an amazing 22,000 IU of vitamin A, as well as twice as much calcium as phosphorus. The broccoli leaf turned out to be the most nutritious part of that vegetable, having 4� times as much vitamin A than the flowerette and 15 times that of the stem. Weird, huh? Corn, on the other hand, had an almost 1:13 calcium to phosphorus ratio! According to this chart, there really IS a difference between sweet potatoes and yams, with yams the hands-down winner, containing almost 1� times the vitamin A as well as twice the calcium. (Nice to have THAT mystery solved!) As far as greens go, collards, endive, kale, beet greens and spinach were wonderful in terms of not only vitamin A, but also in their ratios of calcium to phosphorus. Parsley was excellent in both those categories, plus a hefty 20 grams of protein and 1� times the vitamin C as an orange. But by far, the nutritional winner was the lowly dandelion, scourge of the suburban lawn. Dandelion greens contained an incredible 20,000 IU vitamin A, a 2�:1 ratio of calcium to phosphorous and (for humans) a whopping 100 mg. of vitamin C -- TWICE what you find in a medium-sized orange. (Boy, those citrus growers have sure done a fine PR job, don't you think?) Just How Big Is That Parrot REALLY? We parrot companions often make a fundamental mistake when we feed our birds. We apparently believe our birds are actually as big as THEY think they are -- as opposed to how big they REALLY are. I don't know about you guys, but Sam, my 40+ year old blue and gold macaw definitely thought she was bigger than the 80 pound Doberman I used to have. A friend of mine has a Grey cheek parakeet named Cyclone who is bigger than a Great Dane. It's true -- just ask him. There's one thing for believing in the psycho-logical size of a parrot -- there is another for FEEDING for the psychological size. The fact is that we all tend to overfeed our parrots. There is no problem with that unless we overfeed stuff a parrot loves, like pasta, as opposed to what is truly good for them, like dandelion greens and kale. I happen to like vegetables a great deal, but like I said before, if I were offered the choice of veggies or chocolate cake, well…. The other day, when a new boarding client brought her Congo African grey to stay with me, she brought the following foods: a large container of seed, a box of Fig Newtons™ and a jar of maraschino cherries. (Yup, this was a new one for me, too!) When questioned, she explained that they gave the bird a cherry when they left for work and a cookie at bedtime. When I expressed concern, she said "But it's only one cookie and one cherry -- that isn't much." I saw the same problem with the lady who "only fed her Amazon (another one pound parrot) nine grapes a day." Well, I believe it was Greg Harrison who worked out the math -- that one grape to a bird the size of a cockatiel [approximately 100 grams] was equal to 49 grapes to a human. And that, my friends, is A LOT OF GRAPES. With the lady with the Fig Newtons™ and maraschino cherries, I did some math. [Now, you math majors, be nice!!] The bird weighed 430 grams. As I understand it, birds can consume anywhere from 15-20 % of their body weight daily. (For those people who actually believe that old saying, "She eats like a bird " – at a 140 lb., if I ate like a bird, I would consume anywhere from 25-30 pounds of food per day.) ANYWAY, if a 430 gram bird consumes, say, 15-20% of their body weight daily in food, then that bird is consuming 65-86 grams of food per day (a-bout 2-3 ounces). A Fig Newton™ weighs about 15 grams and a maraschino cherry weighs 4 grams. (OF COURSE I weighed them, how else would I know what they weigh?), or 19 grams of junk. Di-viding 19 g. by 65 and 86 g., we find that 23-29% percent of that bird’s daily food intake is JUNK. That’s A LOT of junk, don’t you think? Maybe too much, eh? I was talking to a lady the other day on the phone, and she told me that she feeds her budgie pellets, but since it loves them, she also gives the bird "just a little seed for a treat." I asked her how much seed, and her answer was one tablespoon daily. Well, American budgies weigh about 30 g. (one ounce), so 15-20% of their body weight would equal 4� -6 grams of food per day. Just out of curiosity, I weighed one table-spoon of small bird seed on my $50 digital kitchen scale, and you know what? That tablespoon of seed weighed 10 grams – almost double the bird’s total food intake for the day! Not exactly a little treat, no? Do you really think that little budgie is eating any pellets, with that much seed in it’s cup? |
|
||||
|
The Myth of the "Table food Diet"
In her article "Parrot Diets & The 'Idiot Factor'" [Pet Bird Report Issue #26], Blanchard commented on the variety of food stocked in pet super store bird departments -- 95% seed mixes and only a couple of types of pellets. She felt this was proof that the average bird owner in this country still feeds a substandard diet, and I agree. If more bird owners fed pellets, then they would demand that these stores stock in a better variety of pellets. Unfortunately, the same is true of human diets in this country -- a brief perusal of the menu in a fast food restaurant or the shelves of the average grocery store will not leave a person with a comfortable feeling that the average American is eating a balanced diet. On the contrary. Consequently, the best avian vets in my area no longer recommend feeding table food to a bird at all. They have realized how nutritionally poor most table food is in this country. Instead, they recommend feeding a good quality pellet along with vegetables high in vitamin A. Besides the food already mentioned, other vita-min A-rich foods would include: red chili peppers (dried are better than fresh), cantaloupe, beef liver, egg yolks, papaya, carrots and mango. A number of times, I have boarded parrots that are on a base diet of "table food," and I‘m really uncomfortable with that. I don’t feel that I know enough about nutrition to be able to provide a balanced diet of just table food. To quote Dr. Brue, again [R, H&H p. 65]: "Just as providing complete, through veterinary care is impossible without proper training, so is the formulation of a properly balanced, complete diet. The formulation, development and production of a diet is surprisingly complex due to the large number of nutrient interactions, the differing bioavailabilities of nutrients from different ingredients and the difficulty of procuring and administering micronutrients into the diet. A well formulated, properly balanced diet represents a precise combination of over 40 nutrients, sometimes provided by just as many different ingredients." Conclusions….. FINALLY So all of this babbling boils down to rather simple stuff. Don’t assume that you are feeding a good diet – really analyze not only what you are putting in your bird’s bowl, but what he is actually consuming. Look at the volumes he eats in terms of how big he really is. There is absolutely nothing wrong with treats or even junk food, as long as the volumes are sensible. Don’t undermine a good pelleted diet with too much junk or too many treats. It is your responsibility as an educated parrot companion, to make sure that your little friend is eating a balanced diet, so that (s)he can enjoy the maximum potential life span with the best possible health. This article was first printed, in part, in THE PET BIRD REPORT, Issue #31 Vol. 6 No. 5 Liz Wilson, Certified Veterinary Technician, has been assisting pet bird owners with parrot behavior problems for several years through lectures, phone consultations, and house calls in the Greater Philadelphia area. She can be reached at (215) 946-5964 9AM - 9PM M-F |
|
|||
|
This is really eye opening! Thanks for posting this Kevin.
__________________
![]() ------------------------------------------- Mika, White Capped Pionus | Stewie, Sun Conure ------------------------------------------- Best in Flock parrot blog Featured posts: - Parrot Dominance - A False Construct - How Loud is a Screaming Sun Conure? - Clicker Training Misconceptions - Parrots Never Bite for "No Reason" - Clicker Training for Birds - Book Review |
|
|||
|
Wow! Thanks for all of the great information. I was feeling pretty good that my GCC and Budgies were eating apples and grapes. I'm glad to find that the dandelion greens, fresh spinach and curly parsley are good for them though because they've been eating them on a daily basis. I also add a mixture of roudybush pellets and a tiny bit of seed together in another bowl. I've also been offering yams, broccoli, cucumber and cherries but they don't really seem to like them yet.
Anyway, great information and my babies Bogiebird, Vanity, Fancypants, Skye ,Dexter and I thank you. |
|
|||
|
Thanks for posting this Kevin. I wrote down those fruits rich in vitamin A. That was a big help. It's a good thing Ash is a food lover! She'll eat ANYTHING I give her- so I make it healthy. Any treat given is once a day about the size of a fingernail.
__________________
![]() 1 Rainbow Lorikeet 2 Cockatiels 1 Budgie 1 Collie 2 Huskies 1 Pekin duck 3 Silkie Chickens 6 Hermit Crabs 1 Blue Crayfish |
|
|||
|
Thank you for posting this!
I'm still trying to get my parakeet to eat fresh fruits and veggies. He's only been with me for a couple weeks though, and is still warming up to me. He loves his pellets, and I give him a little bit of seed to forage for on the carpet. I'm finding that by placing little bits of food scattered on the ground, I can get him more interested in it than if I put it in a bowl in the cage - I'm hoping that eventually I'll be able to get him to eat out of the bowl, once he makes the connection that they are the same food. Fortunately, any of the fruits and veggies he doesn't eat for the day gets to be fed to my bumblebee milipede, who prefers his food to have been sitting out for the day first. I also have 5 rats, which require fresh veggies and fruits daily, as well as a pretty specific diet (most people wouldn't realize this about rats ;) ) and so I can buy plenty of stuff for variety, and it wont go bad before it gets eaten by somebody.
__________________
5 Rats: Sgt Pepper, Mr Mustard, Julia, Martha, and Dizzy Miss Lizzy 1 Parakeet: Meiji |
|
|||
|
Good write up! I'm 'lucky' with my lorikeet, as he's obviously not a seed eater (though his species does have the ability to properly digest seed. The Musschenbroek's are the other lorikeet species that naturally have an amount of seed in their diets, and some of the larger species are known to eat a small bit as well). His diet is roughly 50% Avico nectar (low iron content) and 50% fruits and veggies. Today was actually the first day that he voluntarily ate something green (I usually mix anything green in with his fruit puree to keep it red or orange. He eats based on color. lol) His fruit puree is always papaya and sweet potato based with a large assortment of other healthy fruits and veggies mixed in. He eats quite a healthy diet IMO.
__________________
Kai - Iris Lorikeet |
![]() |
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Clipping pros and cons | parrotntn | Training Techniques | 5 | 01-22-2008 10:25 PM |
| Good diet? | sunnyshine | Bird Health & Safety | 5 | 12-18-2007 08:43 AM |
| In need of a good parrot stand/gym... | MandysBlackRoses | Bird Board Discussion | 15 | 05-06-2006 08:47 AM |