Breeding and milking cows for milk free of β-casein A1
AssigneeA2 Corporation Limited
InventorCorran Norman Stuart McLachlan
Life of this patent
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Abstract
A milk or other dairy product, capable of minimizing the onset of disease such as coronary heart disease or enhancing the immune response is derived from animals which are substantially free of the β-casein A1 allele. Bulk milk can be produced by testing for and culling cows who test positive for the β-casein A1 allele, or by producing immunoglobulins and other immune response proteins, in cow's milk from animals not possessing the β-casein A1 allele, or other commercial milk producing animals, to this allele, to counteract the immnunosuppressant substances present that are produced from it, in commercial milking cows such as Holsteins, together with its blending with non-treated milk or the recovery of such immunoproteins.
Claims19
A method of producing milk from one or more lactating bovines producing milk substantially free of β-casein A1 but comprises at least one or more of β-caseins A2, A3, B, C, D and E, the method comprising the steps of:
- (i) breeding one or more bovine bulls that are known not to have DNA encoding for β-casein A1 with bovine cows that do not have DNA encoding for β-casein A1 to give progeny cows which do not have DNA encoding β-casein A1;
- and
- (ii) milking the progeny cows.
A method of producing milk from one or more lactating bovines producing milk substantially free of β-casein A1 but comprises at least one or more of β-caseins A2, A3, B, C, D and E, the method comprising the steps of:
- (i) breeding one or more bovine bulls that are known not to have DNA encoding for β-casein A1 with bovine cows that do not have DNA encoding for β-casein A1 to give progeny cows which do not have DNA encoding β-casein A1;
- and
- (ii) milking the progeny cows,
- and wherein said one or more bovine bulls are known not to have DNA encoding for β-casein A1 are determined by testing DNA or RNA from cells obtained from one or more bovine bulls for the presence of DNA or RNA encoding β-casein A1.
A method of producing milk from one or more lactating bovines producing milk substantially free of β-casein A1 but comprises at least one or more of β-caseins A2, A3, B, C, D and E, the method comprising the steps of:
- (i) breeding one or more bovine bulls that are known not to have DNA encoding for β-casein A1 with bovine cows that are known not to have DNA encoding for β-casein A1 to give progeny cows which do not have DNA encoding β-casein A1;
- and
- (ii) milking the progeny cows.
Dependencies are inferred from the claim text.