Process for the preservation of ram semen by freezing
US3973003A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1974 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Dec 16, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61D19/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The process according to the invention consists in that the freshly collected ram semen is first diluted at between 25.degree. and 32.degree.C and notably at 30.degree.C, in a diluent without glycerol containing lactose and egg yolk, and in then diluting, at between 3.degree. and 5.degree.C and notably at 4.degree.C, the mixture previously obtained in a diluent containing glycerol, said diluent essentially comprising powdered milk and sodium citrate, in conditioning in straws the so diluted semen and in freezing it in liquid nitrogen at about -75.degree.C. The invention also relates to the diluent used in the above process. The process is useful for preserving ram semen by freezing for subsequent artificial insemination of ewes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.