US3846559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for converting animal waste products into a food supplement
Assignee: INT FARM SYST INC US
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Filing: 1971-11-30
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Granted: 1974-11-05
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Expires: 1991-11-30
Abstract
Abstract An animal feeding process wherein animal waste products are collected and fed to a storage vat and combined with a small quantity of a yeast culture and the combination of these produucts are aerated and agitated preferably under an elevated temperature and acidic conditions. The waste products are converted into a high protein animal feed supplement. The supplement is then subjected to an elevated temperature to inactivate enteric flora. The final product is then added to the animal''s feed, i.e., ground corn, soybean meal and the like. The heat treatment reduces the possibility of any disease-producing organisms from being fed to the animal, and improves the digestibility of the product.
Inventors
- 👤 R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:57
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; A; A01; A01K; A01K1/00; A01K1/02; A01K1/0227; A23; A23J; A23J1/00; A23J1/001; A23J1/002; A23K; A23K10/00; A23K10/10; A23K10/12; A23K10/20; A23K10/26; A23L; A23L5/00; A23L5/20; A23L5/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A METHOD OF INCREASING THE WEIGHT OF A GROUP OF SWINE WHICH COMPRISES: FORMING A SLURRY OF SOLID AND LIQUID WASTE PRODUCTS OF SAID SWINE AND A YEAST, AERATING AND AGITATING SAID SLURRY WHILE MAINTAINING ITS TEMPERATURE AT ABOUT 75* TO 95*F AND ITS PH AT ABOUT 4 TO 7 UNTIL THE UREA CONTENT OF THE SLURRY HAS BEEN SUBSTANTIALLY ELIMINATED, THEREBY PRODUCING A SLURRY USEFUL AS A SWINE FEED SUPPLEMENT HEATING SAID SLURRY AT A TEMPERATURE BETWEEN ABOUT 140*200*F FOR A PERIOD OF TIME TO INACTIVATE A SUBSTANTIAL PORTION OF ENTERIC FLORA THEREIN AND TO IMPROVE THE DIGESTABILITY OF SAID SUPPLEMENT, AND FEEDING SAID SWINE FEED SUPPLEMENT TO SAID SWINE.
Claim 2
Independent Claim
111 words
A METHOD OF INCREASING THE WEIGHT OF A GROUP OF SWINE WHICH COMPRISES: FORMING A SLURRY OF SOLID AND LIQUID WASTE PRODUCTS OF SAID SWINE AND A YEAST, AERATING AND AGITATING SAID SLURRY WHILE MAINTAINING ITS TEMPERATURE AT ABOUT 75* TO 95*F AND ITS PH AT ABOUT 4 TO 7 UNTIL THE UREA CONTENT OF THE SLURRY HAS BEEN SUBSTANTIALLY ELIMINATED, THEREBY PRODUCING A SLURRY USEFUL AS A SWINE FEED SUPPLEMENT HEATING SAID SLURRY AT A TEMPERATURE BETWEEN ABOUT 140*200*F FOR A PERIOD OF TIME TO INACTIVATE A SUBSTANTIAL PORTION OF ENTERIC FLORA THEREIN AND TO IMPROVE THE DIGESTABILITY OF SAID SUPPLEMENT, AND FEEDING SAID SWINE FEED SUPPLEMENT TO SAID SWINE.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein said heating is continued for a period for at least 5 minutes at a temperature of at least 140*F.
Claim 4
Independent Claim
102 words
The method of forming a swine feed supplement which comprises: forming a slurry of solid and liquid waste products of said swine and a yeast, aerating and agitating said slurry while maintaining its temperature at about 75* to 95*F and its pH at about 4 to 7 until the urea content of the slurry has been substantially eliminated, thereby producing a slurry useful as a swine feed supplement and heating said slurry at a temperature between about 140* - 200*F for a period of time to inactivate a substantial portion of enteric flora therein and to improve the digestability of said supplement.
Claim 5
Independent Claim
102 words
The method of forming a swine feed supplement which comprises: forming a slurry of solid and liquid waste products of said swine and a yeast, aerating and agitating said slurry while maintaining its temperature at about 75* to 95*F and its pH at about 4 to 7 until the urea content of the slurry has been substantially eliminated, thereby producing a slurry useful as a swine feed supplement and heating said slurry at a temperature between about 140* - 200*F for a period of time to inactivate a substantial portion of enteric flora therein and to improve the digestability of said supplement.
Claim 6
Dependent Claim
30 words
The method of claim 3 which comprises heating said slurry at least at about 160*F for up to about 20 minutes to substantially inactivate all E. coli in the slurry.
Claim 7
Dependent Claim
31 words
The method of claim 3 which comprises heating said slurry at least at about 180*F for up to about 30 minutes to substantially inactivate all common enteric flora in the slurry.
Claim 8
Dependent Claim
22 words
The method of claim 3 wherein conventional swine rations comprising corn and soy bean meal are added to said swine feed supplement.
References Cited (Backward Citations)
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Cited
US3375116A
Cited
US3503751A
Cited
US3337448A
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US3546812A
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US3580840A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |