System for improving yield of sexed embryos in mammals
First Claim
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1. A method of producing multiple, sexed embryos from a female mammal comprising:
- a. creating superovulation in said female mammal to create at least two eggs comprising the step of using an ovulatory pharmaceutical to cause multiple eggs to be produced comprising the steps of;
i) injecting a dosage of follicle stimulating hormone a plurality of times a day;
ii) administering said dosage of follicle stimulating hormone with prostaglandin F-2-alpha;
and wherein said step of injecting said dosage of follicle stimulating hormone a plurality of times a day comprises injecting said follicle stimulating hormone in approximately half day increments at a dosage level of 6, 6, 4, 4, 2, 2, 2, and 2 mg between days 9 and 12 inclusive of the estrus cycle and wherein administering said dosage of follicle stimulating hormone with prostaglandin F-2-alpha comprises supplementing 25 and 12.5 mg of prostaglandin F-2-alpha on the sixth and seventh dosages, respectively, of said follicle stimulating hormone;
b. determining a sex of a sperm cell of a male mammal;
c. sorting according to said sex of said sperm cells;
d. inserting at least a portion of said sorted sperm cells into a uterus of said female mammal after an onset of estrus; and
e. fertilizing a plurality of said eggs to produce at least two sexed embryos of the desired sex from said female mammal.
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Abstract
Improved insemination systems particularly adapted to use for sex-selected sperm sorting include systems which achieve superovulation and then multiple embryo production with sexed embryos. These systems combine with other techniques, including techniques for enhanced sheath fluid and other strategies which minimize stress on the sperm cells, and, potentially, a 2.9 percent sodium citrate sheath solution for bovine species and a hepes bovine gamete media for equine species. Improved collection systems and techniques for the process are described so that commercial application of sperms samples as well as the resulting animals may be achieved.
80 Citations
20 Claims
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1. A method of producing multiple, sexed embryos from a female mammal comprising:
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a. creating superovulation in said female mammal to create at least two eggs comprising the step of using an ovulatory pharmaceutical to cause multiple eggs to be produced comprising the steps of; i) injecting a dosage of follicle stimulating hormone a plurality of times a day; ii) administering said dosage of follicle stimulating hormone with prostaglandin F-2-alpha; and wherein said step of injecting said dosage of follicle stimulating hormone a plurality of times a day comprises injecting said follicle stimulating hormone in approximately half day increments at a dosage level of 6, 6, 4, 4, 2, 2, 2, and 2 mg between days 9 and 12 inclusive of the estrus cycle and wherein administering said dosage of follicle stimulating hormone with prostaglandin F-2-alpha comprises supplementing 25 and 12.5 mg of prostaglandin F-2-alpha on the sixth and seventh dosages, respectively, of said follicle stimulating hormone; b. determining a sex of a sperm cell of a male mammal; c. sorting according to said sex of said sperm cells; d. inserting at least a portion of said sorted sperm cells into a uterus of said female mammal after an onset of estrus; and e. fertilizing a plurality of said eggs to produce at least two sexed embryos of the desired sex from said female mammal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of producing multiple, sexed embryos comprising the steps of:
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a. creating superovulation in a female mammal to create at least two eggs using an ovulatory pharmaceutical to cause multiple eggs to be produced; b. chemically coordinating a sheath fluid to create a sheath fluid environment for sperm cells of a male mammal which is coordinated with both a pre-sort and a post-sort cell fluid environment comprising establishing a sheath fluid which contains about 2.9% sodium citrate; c. determining a sex of said sperm cells; d. sorting according to said sex of said sperm cells; e. inserting at least a portion of said sorted sperm cells into a uterus of said female mammal after an onset of estrus; and f. fertilizing a plurality of said eggs to produce at least two sexed embryos of the desired sex from said female mammal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification