Improving of pig production by intrauterine artificial insemination and other biotechnological solutions

摘要

in the amount of pork in the market have significantly increased. These requirements made imperative to improve the efficiency of swine production. In order to achieve this, it is necessary to implement new biotechnological procedures and production protocols.Implementation of artificial insemination (AI) in commercial swine production has increased dramatically over the last 30 years, which is why there is a constant need for improvement of AI technologies. New methods of insemination (insemination with frozen/thawed semen, various techniques of insemination) and the use of modern equipment for analysis and triage of spermatozoa (sex-sorting sperm) contributed for obtaining of much better results in the modern pig industry. We conducted the testing of one such method.The aim of this study was to examine the effects of the implementation of post-cervical (intrauterine) artificial insemination compared to conventional, deep intravaginal insemination in sows.The study included a total of 200 sows, which were divided into two groups. Test group of sows (n=100) were inseminated using post-cervical (intrauterine-IU) insemination technique with the use of special catheters, while the control group (n 1 =100) was inseminated deep intravaginally (IV). In both groups insemination was performed after estrus detection ("standing reflex", "riding test"). For insemination of sows in tested group was used chilled semen with 1.5 billion of spermatozoa with the total volume of 50 ml, while for the intravaginal insemination of control group, was used a standard 100ml dose of chilled semen with a 3 billion of spermatozoa. In both groups of sows insemination was performed once. Insemination with catheter for IU insemination was successful in 89 sows. Of the total number of successfully inseminated, 84 sows farrowed (94%). The average number of live-born piglets of sows in the test group was 11.6, which is 1.1 piglet greater than in the control group of conventionally inseminated sows. Use of intrauterine (post-cervical) insemination technique increases the number of spermatozoa that got to oviduct, the place of fertilization. That results in increasing of farrowing rate in sows and number of live-born piglets. In addition, the use of IU catheters reduces semen reflux during AI, allowing use of smaller insemination doses volume with fewer spermatozoa. On that way we can achieve insemination of twice more sows with the same amount of semen, which significantly contributes to better exploitation of genetic material from highly valuable boars. Normal 0 false false false EN-US X-NONE X-NONE