What do you think of the age of the grass turtle? ask

Judging the age of grass turtles depends on their growth lines.

As the picture shows, each stripe is one year old. The tortoise in the picture is ten years old, plus the year of birth, it is eleven years.

During the growth of turtle shield shell, the temperature is suitable in spring, summer and autumn, and it grows rapidly. When hibernating, it stops growing and forms dark lines slightly lower than the shell surface, which are called growth lines. The growth line means that a turtle has been growing for a year. The smaller the interval between growth lines, the slower the growth of turtles, which is also an important basis for judging pond turtles and wild turtles.

The above methods are applicable to most turtles. However, greenhouse turtles grow at constant temperature all the year round, and the growth line is not obvious, so this method is not applicable.

? Turtle (scientific name: tortoise), commonly known as tortoise, is also known as Chinese soft-shelled turtle, golden turtle, black turtle, mud turtle, mountain turtle, smelly green turtle, longevity turtle and so on. , belongs to the tortoise, tortoise, is a kind of tortoise under the terrestrial tortoise family. Turtles generally feed on plants, shrimp and small fish, and their abdominal armor is called "tortoise shell", which can be used as a tonic. It is the most widely distributed and abundant turtle in China. China has always regarded it as a symbol of health and longevity; In the international market, China grass turtle is very popular; People in Japan, the Philippines, Europe and America regard it as a symbol of "good luck and long life". Soft-shelled turtle is a treasure all over the body, which is regarded as top-grade food tonic and medicine tonic in Shennong's Classic of Materia Medica and Compendium of Materia Medica. Because of the threat of overfishing, they are listed as endangered species by the World Conservation Union. As far as Hongkong and Chinese mainland are concerned, there is a market for artificial breeding of turtles, so there are a large number of turtles in the breeder's market, and the plant feed is mainly composed of plant stems and leaves, melon skin, wheat bran and so on.