Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Plant material is basic ingredient other than extract,...
Reexamination Certificate
2000-07-28
2001-12-25
Sayala, Chhaya D. (Department: 1761)
Food or edible material: processes, compositions, and products
Products per se, or processes of preparing or treating...
Plant material is basic ingredient other than extract,...
C426S630000, C426S807000, C426S053000, C426S054000
Reexamination Certificate
active
06333062
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates generally to a method for increasing the carcass yield of poultry and, more specifically, to the use of the enzyme &agr;-galactosidase in combination with other enzymes as a feed supplement to increase the yield of the carcass and decrease fat deposition in broiler chickens fed a commercial corn/soybean meal diet.
2. Background of the Prior Art
Many grains such as wheat and barley that are typically used as feed ingredients for broiler feed contain up to 10% of a fiber fraction consisting of non-starch carbohydrates. Chickens, like other animals, are not able to digest these non-starch carbohydrates since they lack the digestive enzymes in their digestive systems. Use of exogenously supplied enzymes in wheat and barley based diets is common practice and is recognized to increase feed conversion, and frequently also body weight, as it allows the animal to utilize the otherwise non-digestible fiber portion of the diet. Enzymes used to improve the digestibility of wheat and barley are cellulases, pectinases, &agr;-amylases and arabinoxylanases for wheat and &bgr;-glucanases for barley.
The soybean meal component of a corn/soybean meal diet, and to a lesser extent the corn fraction of such a diet, contains typically non-starch polysaccharides such as galactosides which also cannot be digested by the chicken. Chickens lack the enzyme &agr;-galactosidase, which would allow the animal to break down these non-starch polysaccharides into sugar molecules which then can be used by the animal. However, the chicken small intestinal tract houses a microbial flora that is reported to take up and utilize the galactoside fraction of soybean meal, competing not only for the energy content with the animal, but also causing secondary problems such as flatus and diarrhea.
Efforts have been made by others to produce an enzyme which will liberate nutrients from the non-digestible components of corn/soybean base diets. Results from these efficacy trials have been inconsistent. Accordingly, research on the use of enzymes such as cellulases, glucanases, xylanases, mannanases and also &agr;-galactosidase has led to the conclusion that these enzymes improve feed conversion as well as increase body weights, but have minimal effect on increasing white meat, increasing carcass weight, or decreasing fat deposition.
SUMMARY OF THE INVENTION
The invention consists of a method for increasing feed conversion, increasing the yield of white meat, increasing the yield of the carcass, including edible elements such as the breast, thigh, wings, legs, and back, and decreasing the deposition of fat in poultry through the addition of a blend of enzymes, primarily including &agr;-galactosidase, to a commercial corn/soybean meal diet. The supplement is fed at a rate of between about 22.5 g/ton &agr;-galactosidase and about 75 g/ton &agr;-galactosidase of a commercial corn/soybean meal diet, and preferably between about 30 g/ton and about 45 g/ton. Feed conversion is increased between about 1% and about 10%, breast yields are increased by between about 1% and about 10%, carcass yields are increased by between about 1% and 20%, and decrease in fat deposition is between about 1% and about 20%.
An object of the present invention is to provide a method for increasing the yield of carcass mass in poultry.
Another object of the present invention is to provide a method for decreasing the deposition of fat in poultry.
A further object of the invention is to provide a feed supplement comprising a blend of enzymes including &agr;-galactosidase which when added to a commercial corn/soybean meal diet improves the feed conversion, reduces the deposition of fat, and increases the yield of carcass mass in poultry.
These and other objects of the invention will be made apparent to persons skilled in the art upon a review of this specification, the associated figures, and the appended claims.
REFERENCES:
patent: 3657421 (1972-04-01), Berger
patent: 5356810 (1994-10-01), Fleno et al.
patent: 5459162 (1995-10-01), Saxton
patent: 6174558 (2001-01-01), Lamptey
patent: WO 95/22601 (1995-08-01), None
patent: WO 98/20750 (1997-11-01), None
Steve Leeson & Linda J. Caston, Adding Roxazyme to Wheat Diets of Chicken and Turkey Broilers, 5 J. Appl. Poultry Res.167 (1996).
Merton H. Pubols, The Effects of alpha-Galactosidase on Energy Values of Soybean Meal Rations, 72 J. Poultry Sci. 126 (Suppl. 1) (1993).
Craig N. Coon et al., The Effect of Oligosaccharides on the Nutritive Value of Soybean Meal (1989) (unpublished manuscript provided by the Nat'l Soybean Processors Ass'n).
Craig N. Coon et al., Effect of Oligosaccharide-Free Soybean Meal on True Metabolizable Energy and Fiber Digestion in Adult Roosters, 69 J. Poultry Sci. 787 (1990).
I.H. Knap et al., Improved Bioavailability of Energy and Growth Performance from Adding Alpha-Galactosidase (from Aspergillus sp.) to Soybean Meal-Based Diets, Proc. Aust. Poult. Sci. Sym. (1996).
G.G. Irish et al., Removal of the alpha-Galactosides of Surcrose from Soybean Meal using either Ethanol Extraction or Exogenous alpha-Galactosidase and Broiler Performance, 74 J. Poultry Sci. 1484 (1995).
Brinkhaus Friedhelm
Fontana Eddy A.
Lamptey Arlene T.
Lewis, Jr. G. L.
Herink Kent A.
Kemin Industries, Inc.
Rosenberg Daniel A.
Sayala Chhaya D.
LandOfFree
Method for increasing carcass yields in poultry does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for increasing carcass yields in poultry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for increasing carcass yields in poultry will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2590657