Animal embryo collection apparatus for buffalo

Abstract

An animal embryo collection apparatus suitable for buffaloes comprises a main duct, an inflation duct, an inflation valve, and an elastic gas-bag. The main duct is a hollow hose with an enclosure end and an open end. The inflation duct is set in the main duct, and is isolated from the main duct lumen. The inflation end of the inflation duct is guiding out with air proof from the near open end of the main duct, and is connected with the inflation valve. The elastic air bag is bundled on the outer wall of the main duct, and the edge thereof is connected by air-proof technique to the outer wall of the main duct. The inflation duct communicates with the elastic air bag, and on the collection segment from the enclosure end to the elastic air bag there are several backflow apertures leading to the inner chamber. The length of the main duct collection segment of is 20mm-250mm, the outer diameter of the main duct is 3mm-10mm, and the length of the elastic air bag is 10mm-50mm, the air inflation capacity is 1ml-70ml, and the number of the backflow apertures is 2-16. The main duct where the air bag lies is thicker than other position, and there is some small protrusion on the elastic air bag outer wall, using silica gel material. The length of the collection segment and the number of the backflow apertures are increased, so that it is more suitable for buffalo uterus structure, and the recovery ratio of buffalo embryos reaches up to 90%.

Description

Technical field [0001] The invention relates to an animal embryo collector, in particular to an animal embryo collector suitable for buffaloes. Background technique [0002] In China and even the buffalo countries in the world, the research on the production of buffalo embryos in vivo is still in its infancy. Except for India, Pakistan, Italy, Bulgaria and some scientific and technological personnel in Guangxi, China, who have carried out the recovery and production of buffalo embryos in vivo, other countries and regions There is no academic report yet. The reasons are as follows: one is that a better superovulation treatment method has not been explored; the other is that the embryo collection device only suitable for cattle is still used, and the effect is very poor, so that many technicians at home and abroad shy away from it. The main reason why the world's high-yielding milk buffalo in vivo embryo production technology has not been developed in the past two decades. A...

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Problems solved by technology

It is very difficult to collect buffalo embryos with the existing imported bovine embryo collector, and the embryo recovery rate is extremely low

Regardless of the academic reports in Egypt, Italy, Brazil, or in Asian countries such as India, Pakistan, China, Thailand, the Philippines, etc., the recovery of buffalo embryos by using the existing bovine embryo collector products is very poor. 1.3 buffalo embryos can be recovered each time

In China, Guangxi is the earliest place to carry out the production of buffalo embryos in vivo and in vitro. However, because the existing bovine embryo collector is used to collect buffalo embryos, the collection effect is very poor, and the recovery rate is about 30% (embryo recovery number / corpus luteum number) ), which is far from the cattle embryo recovery rate of more than 95%.

The main reason for the low embryo recovery rate in buffalo is that the distance from the tip of the main catheter of the existing bovine embryo collection instrument to the elastic air bag is too short, and the range of activities in the buffalo uterus is not wide; It gradually becomes smaller from the outside to the inside. When the embryo is punched, the elastic air bag on the main catheter has a smooth surface after being inflated, and it is difficult to fix it on the inner wall of the uterus at a specific position. The air bag is easy to slide when there is water pressure; No. 16, No. 18, No. 20), the diameter of the smallest No. 16 tube is difficult to enter the uterus of young female buffalo to punch embryos; in addition, the tube wall at the elastic balloon of the main tube is too soft, and the tube of the main tube is inflated and pressurized. Narrow diameter, easy to clog

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