After the beginning of autumn, as the northern weather became cooler and the temperature was unstable, many tortoise friends left messages to Mr. thrush turtle one after another, reflecting that their turtles were sick, such as food refusal, lack of water, cold or pneumonia, etc., and asked what to do. Mr. thrush turtle is not surprised at this,. In order to avoid more turtle friends from being injured, Mr. thrushi suggested that the method of “large water body, remove the sun terrace” should be adopted to stabilize the environment, reduce the large temperature difference and prevent turtles from getting sick in autumn.
“remove the sun terrace” is to take out or lower its height from the water and submerge it in the water as a shallow water area. At present, the viewpoint that “there must be a sun terrace so that the tortoise can bask on its back” is deeply rooted in the hearts of the people. Many friends do not understand this point and say, “if a turtle doesn’t bask on its back, what should I do with its soft nails?”. It’s true that tortoises will lose their soft nails if they don’t sun their backs, or that soft nails are caused by not drying their backs. This view is very popular now. As a result, people almost regard “basking on the back of Tortoise” as the first priority of raising turtles. It seems that there is something missing without sun drying the back. Is that really the case? Don’t bask in the back, less bask in the back, really can cause tortoise soft armour? In fact, this is not the case. This is due to the fact that we do not understand the real reason for the soft nails of turtles, but also misunderstand the “calcium supplement” effect of the turtle’s back drying. Today, Mr. thrush turtle will talk about this issue for your reference.
soft nail of tortoise refers to the phenomenon of soft shell of tortoise, which is called rickets, also known as chondropathy, mainly occurs in the stage of rapid growth of young turtles. The typical features of the turtle are that the back and abdomen nails of the turtle become soft, the joints of the four limbs of the turtle are thick, and the movement is difficult. When the turtle is serious, the toes and claws fall off. Due to the soft tortoise shell and bone, the tortoise’s back shell can not be raised, forming the so-called “collapse back” phenomenon.
because the substance that makes the tortoise bone and tortoise shell hard is mainly calcium, and soft nail means calcium deficiency. And we all often say that the sun helps to “supplement calcium.”. Therefore, many people also believe that the lack of sunlight is the cause of the turtle’s soft nails, that is, less sun exposure on the back. It is generally believed that as long as the turtle’s back is sun dried, the turtle’s soft nail and back collapse can be avoided. Is that really the case? It’s not like that.
tortoise soft nails are really due to calcium deficiency, but this “calcium deficiency” is usually not caused by less exposure to the sun, which is a misunderstanding of the “calcium supplement” effect of sun drying on the back. In fact, the sun does not produce calcium, through the sun, and can not directly “supplement calcium.”. To understand this problem, we must first understand what the main function of turtle back drying is.
tortoise is a variable temperature reptile. It can not regulate its body temperature. Its activity ability mainly depends on the external temperature. The overall characteristics are that when the environment temperature is high, the turtle’s body temperature is high, metabolism is strong, and digestion ability is strong; when the environment temperature is low, the turtle’s body temperature will also be low, metabolism is slow, digestion capacity is weak. Through the back drying, the tortoise receives the sunlight and absorbs the radiation heat, which can quickly raise the body temperature, and then enhance the metabolism, digestive capacity and immune system and other physical functions, which is beneficial to the turtle’s activities.
cholecalciferol, also known as vitamin D3, is a member of vitamin D. This is a fat soluble vitamin, and its formation is closely related to sunlight, so it is also called “sunshine vitamin”. Vitamin D3 can be synthesized by ultraviolet rays in sunlight and cholesterol substances in animal skin. The main role of vitamin D3 is to regulate the metabolism of calcium and phosphorus in animals, promote the absorption of calcium and phosphorus in the intestine and bone calcification, maintain the balance of calcium and phosphorus in the blood, and regulate the immune system to enhance the disease resistance of animals.
simply put, tortoise can promote the absorption of calcium in the body by basking on its back and utilizing the ultraviolet rays in the sunlight, thus strengthening the bones and shell of the tortoise. This is what we usually say, the source of calcium in the sun is not calcium, but vitamin D3.
ultraviolet rays can destroy and change DNA or RNA structure in microbial cells, resulting in cell death. Therefore, ultraviolet rays have bactericidal and disinfection effects. Tortoise often basks in the back, can help kill some bacteria, viruses, and parasites and other pathogens, avoid the production of surface diseases. At the same time, it can also be used as an adjunctive therapy for the disease of tortoise.
these are the three functions of turtle’s back drying. Among them, the most important one is to synthesize vitamin D3 and promote the absorption of calcium in bone and shell, which is the basis for the strength of tortoise shell. In this way, isn’t it just “sunbathing helps to replenish calcium and prevent turtle soft nails”? Don’t say it. You can’t say that. This is not the root cause of the soft nail problem encountered in family turtle raising.
tortoise soft nail, that is rickets, it also has a name, called nutritional skeletal disease. Literally, it is the tortoise eat too bad food, lack of nutrition caused. What nutrients are missing? Of course, the main deficiency here is calcium. The tortoise in the sun, and will not directly produce calcium, it is just synthesis of vitamin D3, to promote the absorption of calcium in the body. Therefore, if you want to supplement calcium through the sun, the premise is that the body must first have sufficient calcium. If the tortoise itself is short of calcium, no matter how much sun you are exposed to, you can’t absorb calcium. Naturally, you can’t prevent soft nails. Therefore, the real reason for the soft nails of turtles is that the calcium content of the feed we feed the turtles is too low, which is the lack of calcium in the food.
speaking of this, some friends must have doubts. Is there a possibility that the tortoise is rich in calcium but lacks vitamin D3? It’s possible in theory, but it’s hard to come up with in practice. As we all know, for human beings, there is a drug called “vitamin D3”, which has a dose limit. If you eat too much, you will be poisoned. That is to say, the demand for vitamin D3 is not much, as long as the diet is balanced, it will not be deficient in general.
at present, calcium in turtle food is mainly achieved by adding animal feed such as fish meal and bone meal. And in these animal feed, also contain more abundant vitamin D3. In short, if there is no shortage of calcium rich lines in turtle food, there will be no problem that calcium can not be absorbed and soft nails will appear. Soft nail usually occurs in the juvenile stage, at which time the tortoise grows rapidly and needs a large amount of calcium. The lack of calcium in turtle food is the real reason for the soft shell of young turtles.
to sum up, the so-called saying that “no sun on the back will lead to soft nails of turtles” is not the case, especially if the back is not sun dried for a short time, it will not cause soft nails. The more common reason is that the quality of food fed to turtles is too poor and the content of animal feed is low, resulting in calcium deficiency in turtle food. It is suggested to feed more fish, shrimp, loach and other foods with high calcium content and rich vitamin D3, so as to avoid the soft nail problem of tortoise. Focus