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Early sex identification method for tortoises

An identification method and gender technology, applied in animal husbandry and other directions, can solve the problems of huge workload and mass slaughter of animals, and achieve the effect of strong operability, high accuracy and simple operation.

Inactive Publication Date: 2017-04-26
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to solve the problems of the traditional gonad tissue section or gonad appearance observation method used in the early sex identification of tortoises, which require a large number of slaughtered animals and a huge workload, and provide a collection of appearance parameters of juvenile turtles without dissecting animals. It is a simple, efficient, operable and accurate method for early sex identification of tortoises.

Method used

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  • Early sex identification method for tortoises
  • Early sex identification method for tortoises
  • Early sex identification method for tortoises

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: According to the above method, the external parameters of 222 turtles that were 2 weeks out of the shell were collected and measured. The ratios of the external morphological parameters of carapace length / plastron length and carapace length / plastron width were significantly different (P <0.05) (Table 1). The ratios of female tortoises are 1.13 and 1.81, and the ratios of males are 1.11 and 1.75, respectively. Using this method for early sex identification of tortoises, the accuracy rate is higher than 95%.

[0030] Table 1 Comparison of the ratios of appearance parameters between male and female hatchlings (mean ± variance)

[0031]

Embodiment 2

[0033] The morphological characteristics of male and female tortoise juveniles are obviously different. The middle and lower part of the back shell of female juvenile tortoises is wider, the end of the carapace is blunt, the back is relatively flat, the difference in length and width of the carapace is small, the tail is short and the handle is thick, and the torso is short And thick (see figure 1 with 2 ). The middle and lower part of the male juvenile shell is narrow, the tip of the hip shield is pointed, the back is more prominent, the tail is long and thin, the carapace has a large difference in length and width, and the trunk is long and thin. The male-female judgment is performed without external parameter measurement, and the accuracy rate is over 80%.

Embodiment 3

[0034] Example 3: Observing the morphology of tortoise gonads by dissection. Early sex identification of tortoises is carried out. The accuracy of the present invention is 95%.

[0035] The specific gender characteristics are described as follows: the gonads of female juveniles are milky white or transparent tube, attached to the abdomen of the kidney, adjacent to the adrenal glands, the gonads are longer and thicker, and the ends are round ( image 3 ). The gonads of male juvenile turtles are divided into two types: one is milky white or transparent and tubular, attached to the abdomen of the kidney, the gonads are shorter and thinner, and the tip is tapered ( Figure 4 ).

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Abstract

The invention relates to an early sex identification method for tortoises, belonging to the field of sex differentiation and sex adjustment and control of temperature-dependent sex determination animals. After being weighed, young tortoises, which are two weeks old, are immersed by ethyl alcohol; then, external morphological parameters are acquired and measured; male and female young tortoise gonads are observed; found from tissue section observation, the sexes are determined; external characteristic parameters of the tortoises obviously related to the sexes are obtained through statistical analysis; therefore, a regression equation is obtained; and the sexes of the newborn tortoises can be judged through the regression equation. Animals do not need to be slaughtered; sex identification of the young tortoises, which are about two weeks old, can be carried out through appearance; compared with a gonad tissue section method, the method is simple, high-efficiency and simple to operate; the accuracy rate is higher than 95%; the operability is high; tools required for performing sex identification are simple and easy to obtain; operation is simple; and the tools include a vernier caliper and a computer.

Description

Technical field [0001] The invention belongs to the field of sex differentiation and sex regulation of temperature-determined sex-determining animals, and particularly relates to a method for identifying the early sex of tortoises. Background technique [0002] The research on the sex differentiation and regulation of turtles is one of the current international research hotspots. The sex determination of many turtles and turtles is environmentally determinative. The greenhouse effect has caused the temperature of the earth to rise, which has caused some species to have a male-male ratio imbalance, and even their offspring appear unisexual, leading to species extinction. Therefore, it is very important to carry out research on the sex differentiation of turtles. urgent. Early sex identification of turtles is the basis of the above-mentioned research work. In addition, early gender identification is of great significance to turtle manufacturers. [0003] There is no report about t...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 雷思佳叶世洲任琴秦艳卿
Owner SHENZHEN POLYTECHNIC
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