In any aquaculture industry, to obtain high yields and excellent offspring, we must pay attention to the selection of this species. Due to the high economic value of turtles, driven by the market economy, the turtle industry has rapidly developed in recent years, and most of the provinces and cities in China have already started artificial breeding. However, the source of the seedlings restricts the development of the turtle industry to a certain extent. The solution is to rapidly multiply resources and reproduce artificially. The choice of turtle species is crucial to the success or failure of artificial turtles.
First, choose the general principle of turtle species for the species of turtles called turtles, all kinds of turtle selection requirements vary, but the basic principles are the same. General requirements of gonads begin to mature, strong physique, bright body color, action sensitive, bright eyes, large individuals, no disability, no deformity, intact tail and limbs without incomplete, epidermal, dorsal and abdominal no damage, no ulceration. Method of inspection: When the turtle is placed on the ground and its head is touched with a thin rod, its head and limbs will be quickly retracted into the shell; if it is placed upside down, it will quickly extend its head and turn it quickly and forcefully. Come; the four limbs can support the body when crawling. Wild turtles are generally used as interracial turtles, but the source of wild turtle species is not easy to understand, and fishing injuries and internal injuries are serious and the survival rate is extremely low. The inspection method for wild turtles is to place the turtle on the ground. The turtle will extend its head and neck. If the surface is filled with blood, the head and neck become thicker, it will not stretch when extended, nor will it be able to flexibly rotate. When touching, the head and neck cannot be completely Inward contraction indicates that there is a fishing injury. If the injury is in the belly, the neck can be retracted, but the back body is often lifted upwards. If you have internal injuries, you do not like to go into the water. If you hold your fingers on both hind legs, they will automatically hang down. If there is a serious hind leg injury, you can try to raise them. If both legs are sagging, the internal injuries are serious and not easy to survive. They should be eliminated.
Second, several common turtle selection requirements
1. Turtles require male turtle shell black, thick base tail, concave and long deep inside the bottom, female turtle torso short and thick, thick tail, the best choice for more than 8 years old, female turtle weight 350 grams, male turtles to achieve gonad maturation Age can be, male to female ratio of 2 to 3:1.
2. Money turtles (three-line shell turtles) The price of money turtles is particularly expensive, and the turtles must be careful. When choosing, turn it over with your hands, the head will stretch long, even and uniform, and the eyes will turn flexibly. Bright skin, warm temperament training, a large gap between the upper and lower armor of the tail, a wide vent hole, requiring more than 6 instar, female body weight 1250 grams to 1500 grams, male turtle weight 700 grams to l000 grams, male and female ratio 2:1.
3. The yellow-throated turtle needs to have two eyes, bright color, lively movement, full muscles of the limbs, and elasticity. Put the turtle into deep water and the turtle can sink. It is best to choose the age of 6 or more, the female turtle weighs 400 grams, the male turtle weighs 300 grams, and the ratio of male to female is 2 to 3:1.
4, flat chested turtle (Hawk turtle) requires a smooth appearance, sensitive to external stimuli, eyes are full of God, full of depression, full and powerful limb muscles, can quickly swim in the water, and can sink, the best choice 5 Age - 6 years, male to female ratio 2:1.
5, snapping turtles require two eyes, head and neck flexible, neat appearance, limbs hypertrophy, to 3 years old turtle is good, female turtle body weight 1000 grams, the male turtle can reach the gonad maturation age, male and female ratio 2 ~ 3: 1.
6, gold head turtle (yellow edge box turtle) requires the eye of God, there is no white spots on the cornea, mouth and nose without blood, no mucus secretion, frightened immediately after the escape, the feces was pellets, wrapped in albuginea, the best Choose age 5 to age 6, require female weight 450 grams, male weight 280 grams, male and female ratio 2 to 3:1.
7. Turtle: It requires no white spots and secretions on the eyeballs. The surface of the turtle's tongue is pink, and there is no white spot. The excrement is cylindrical strips, dark green or white like toothpaste, and the turtle weighs more than 800 grams. The ratio of 2 to 3:1.
8, beauty turtle (Brazil colored turtle) requires the body surface of the skin anhydrous mold, the eye is convex, but not red and swollen, the turtle climbed on the shore frightened, will immediately enter the water or escape, after the water sinks to the bottom or in the water Swimming, full limbs, hand turtle legs, feel powerful, and inward contraction, the best choice of 4 to 5 years of age, female turtle body weight of more than 1000 grams, 300 grams of male turtle weight, male and female ratio of 2 to 3: 1.
9, flame turtles require a clear pattern, colorful, strong activity, neat appearance, the best choice for 2 to 4 years old turtle, weight 400 grams to 1500 grams, male and female ratio of 2:1.
10. Four-spotted turtles require smooth skin, glossy spots, and the size of the top two pairs of eye spot lines are clear, lively and active, the turtle will be placed in deep water, can sink, it is best to choose age 5 to 6 The turtle has a body weight of more than 300 grams, and the male and female ratio is 2:1. (Zhai Wenhua, Jiang Zhanglin, 330105, Xishan Town, Xinjian County, Jiangxi Province) (314416 Yuanhua Town, Haining, Zhejiang, China)
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