Rumen-stable pellets
US4196187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1977 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Sep 2, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5026
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Pellets adapted to be orally administered to ruminants are disclosed. The pellets have a core comprising a nutrient and/or medicament, of which the pH is raised to a predetermined level by the addition of a basic substance. A coating which protects the core in the environment of the rumen is also provided to allow utilization of the core in the abomasum and/or intestine. The coating comprises a polymeric matrix which is resistant to the mildly acidic environment of the rumen and may include a hydrophobic substance dispersed throughout the continuous matrix. The continuity of the polymerix matrix is destroyed in the more acidic environment of the abomasum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.