Yes, calcium.
Also:
Info obtained from russellscorner.com
My guess would be that the vegetable with the least nutritional value would be iceberg lettuce.
Actually, iceberg lettuce has no nutritional value, but it can make your guinea pig gassy and constipated. I recommend not feeding them iceberg lettuce, but rather replace it with romaine lettuce.
Iceberg lettuce is bad for rabbits because it has a high water content and low nutritional value, which can lead to digestive issues and potentially harmful imbalances in their diet.
Yes, however, iceburg lettuce has no nutritional value whatsoever. If you want to feed your bird greens, use romaine, kale, collard, spinach, etc., greens.
They can, but there is a good chance they won't. Also, iceberg lettuce has very little nutritional value, so if you do give it to them, it should be only in very small quantities, to keep them from filling their stomach with worthless food, preventing them from eating foods that are actually good for them.
Feeding iceberg lettuce to guinea pigs is not recommended as it has very low nutritional value and can cause digestive issues such as diarrhea. It is better to offer a variety of other leafy greens and vegetables that are more nutritious and safer for your guinea pig to eat.
Microwaving lettuce may cause some loss of its nutritional value, particularly in terms of vitamin C content. It is generally recommended to consume lettuce raw to retain its full nutritional benefits.
Iceberg Lettuce.
Iceberg lettuce can NOT cause a rabbit death but it has no nutrients value and it COULD get your rabbit sick. Overall, iceberg lettuce for your rabbit should be avoided.
Iceberg lettuce is quite delicious.
a iceberg is a lettuce
Nutritional value means to find the nutrients in a food eg. lettuce is water and fibre, well the majority of it.