What should I feed my Red-Eared Slider Turtles

I would like to feed my two turtles something different for a change. They have been consuming dried shrimp that come in those Raffy l tins for reptiles for about. 3 years now. I don't know what to feed them, since i tried giving them lettuce, but they absolutely hated it. Care to offer any suggestions? I was thinking something along the lines of fruits, veggies, etc. Thanks.

Feeding Your Turtle

To ensure proper nutrition, strong growth and a healthy long-lived turtle, feed a varied diet to both adults and juveniles. Just remember that adults eat less animal protein and more vegetable matter. Juveniles must be fed every day; adults can be fed once every two to three days. Do not feed more than they can eat; the excess food will go to waste and foul the water. Feed a combination of the following foods:

Commercial diets (No more than 25% of total diet)

Trout Chow, commercial floating fish, reptile or turtle food (pellets, sticks or tablets). The pellets and sticks have the advantage of being formulated specifically for reptiles and don't decompose in the water as fast as other foods.

Animal Protein (No more than 25% of total diet)

Live feeder fish--do not feed defrosted frozen fish; they are deficient in thiamin and excess consumption will cause a thiamin deficiency in your turtle. Earthworms--buy them from a reptile or aquarium store; do not feed the ones from your yard as they may contain bacteria, parasites and pesticides against which your turtle has no immunity. Finely chopped raw lean beef, beef heart and cooked chicken are okay for treats, but are not appropriate as a major part of a balanced diet for whole prey eaters. Raw chicken and beef is too often riddled with Salmonella, E. coli and other food-borne organisms. High quality dog kibble can be offered occasionally as treats, too; like muscle meat, dog and cat foods are not appropriate when used as a significant portion of a turtle's diet.