Reproductive management

A method for breeding dairy cattle that increases breeding efficiency with a reduction in the number of months in the breeding cycle without the need for detecting standing estrus of a dairy cow prior to insemination, the method comprising the steps of:

• administering a first progesterone dose to a cow;
• inseminating the cow nine days after administration of the first progesterone dose;
• obtaining a biological specimen from the cow between seven and twelve days after insemination;
• performing at least one assay on the biological sample;
• determining whether or not the cow is pregnant based on the result from the assay;
• and
• administering a second progesterone dose, wherein the second progesterone dose is administered nineteen days after insemination if it is determined based on the result from the assay that the cow is pregnant, and wherein the second progesterone does is administered twelve days after insemination if it is determined based on the result from the assay that the cow is not pregnant.

A method for breeding dairy cattle that increases breeding efficiency with a reduction in the number of months in the breeding cycle without the need for detecting standing estrus of a dairy cow prior to embryo implantation, the method comprising the steps of:

• administering a first progesterone to a cow;
• administering a first gonadotropin releasing hormone dose to the cow on the same day;
• administering a second gonadotropin releasing hormone dose to the cow nine days after administration of the first gonadotropin releasing hormone dose;
• implanting an embryo into the cow seven days after the second gonadotropin releasing hormone dose;
• and
• administering a second progesterone dose to the cow twelve days after embryo implantation.