7 months ago
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In a breakthrough that could alteration the mode India breeds buffaloes and amended dairy productivity, scientists astatine the National Institute of Animal Nutrition and Physiology (NIANP), Bengaluru, nether the Indian Council of Agricultural Research (ICAR), person developed a ready-to-use, ovum yolk-free solution – CRYODIL – for preserving buffalo semen for up to 18 months.
This is said to beryllium the archetypal clip specified a merchandise has been developed and tested successful India to connection a safer and longer-lasting alternate to accepted methods.
The scientists explained that until now, semen from ‘elite’ buffalo bulls was preserved utilizing ovum yolk-based solutions. While these semen extenders person been wide used, they travel with respective limitations.
Egg yolk indispensable beryllium fresh, arsenic its support beingness is lone a fewer hours, and its creation varies betwixt eggs, starring to unpredictable results successful sperm endurance and question aft freezing. Egg yolks tin besides transportation harmful microbes, posing a hazard to carnal health, and the process of separating the yolk from the ovum achromatic is cumbersome.
Moreover, ovum yolk contains chartless factors that tin trim sperm motility, making palmy fertilisation little likely. Although egg-yolk-free extenders are disposable for cattle successful immoderate overseas countries, they are expensive, and until now, nary commercially disposable ovum yolk-free extender existed successful India for cattle oregon buffaloes, NIANP officials explained.
Freshly collected mammalian semen consists of sperm and seminal plasma, a fluid containing captious components indispensable for sperm endurance and fertility. During cryopreservation (freezing and storing), semen from 1 bull, which is usually lone 3 to 5 millilitres, is diluted up to 40–50 times to maximise the fig of inseminations possible. This dilution reduces the attraction of seminal plasma components, threatening sperm beingness and fertility. Moreover, astir of these components are not commercially disposable and cannot beryllium synthesised artificially, creating a important situation for preserving semen effectively, officials said.
To code this, the ICAR-NIANP squad explored whether a earthy assemblage fluid from the aforesaid oregon akin taxon could regenerate ovum yolk and proviso the indispensable components. Their probe led them to beverage from pistillate cattle oregon buffaloes. While beverage contains caseins and whey proteins, not each components were suitable for buffalo sperm. Casein proteins, for example, did not enactment sperm viability. After extended experimentation, the scientists recovered that purified whey proteins without beverage sugars could prolong the viability and motility of buffalo sperm adjacent aft freezing.
Building connected this discovery, the squad developed CRYODIL, an ovum yolk-free semen extender that is acceptable to usage and has a support beingness of up to 18 months. The merchandise was tested connected 24 buffalo bulls, and the results were significant. Semen preserved with CRYODIL showed improved post-thaw sperm question (how actively sperm tin aquatics aft being frozen and thawed, a cardinal origin that determines whether insemination volition pb to pregnancy) and viability, which are captious factors for palmy fertilisation.
In summation to improving semen quality, CRYODIL is cheaper to nutrient than accepted ovum yolk-based extenders. A patent for the merchandise and its mentation method has besides been filed. Fertility trials are presently underway astatine BAIF Development Research Foundation, Uruli Kanchan adjacent Pune, and erstwhile completed, the merchandise is expected to beryllium introduced for commercialized usage successful the field.
