Dairy Industry and Essentials of Establishing a Profitable Dairy Farm

Vocabulary terms covering dairy biology, production life cycles, breed selection, nutrition economics, and farm management principles.

Milk

The physiological secretion from the mammary gland of mammals.

"Foster mother of the human race"

A title earned by the dairy cow due to her ability to produce a massive amount of milk for human consumption.

Mark Jinx

A Holstein cow in western Colorado, USA, that produced $34,175\,\text{kg}$ of milk, $880\,\text{kg}$ of butter fat, and $855\,\text{kg}$ of protein in $365\,\text{days}$ in 1995.

Polyestrus

The reproductive characteristic of coming into estrus (heat) every $21\,\text{days}$ throughout the year, allowing calves to be born in any season.

Standard Lactation Length

The standard duration a dairy cow is kept in active milk production per cycle, defined as $305\,\text{days}$.

Dry Period

The non-lactating resting phase between lactations in a dairy cow, typically lasting $45\text{--}60\,\text{days}$.

Days Open

The interval between calving and successful conception, with an industry goal of $85\text{--}110\,\text{days}$.

Calving Interval

The total duration of time between two consecutive calvings, ideally targeted at $12.5\text{--}13\,\text{months}$.

Cull Cows

Unprofitable cows removed and sold from dairy herds for slaughter due to low milk production, health problems, reproductive problems, or old age.

Cull Rate

The annual percentage of unprofitable animals removed from a herd, exceeding $30\%$ per year in large commercial dairy operations.

Veal and Dairy Steer Beef

Meat products produced as by-products of the dairy industry from surplus male calves and finished dairy steers.

Eggnog

A dairy consumer beverage compounded of beaten eggs mixed with milk or cream.

Profit (in Dairying)

The financial gain defined broadly as the difference between gross income and production expenses.

Feed Expense

The single largest operating expense on most dairy farms, typically accounting for $45\%$ to $60\%$ of total production expenses.

Cowmanship

The personal interest in, care, and concern for cattle demonstrated by the personnel who work directly with them.

Barn System Components

The four main physical facilities of a dairy housing system: the milking center, weather protection, the feeding center, and facilities for manure collection, removal, and disposal.

Major Dairy Breeds

The six primary breeds of dairy cattle: Holstein, Jersey, Guernsey, Ayrshire, Brown Swiss, and Milking Shorthorn.

Heat-Tolerant Dairy Breeds

Dairy breeds that acclimate better to hot weather conditions, specifically the Jersey and Brown Swiss, compared to the Holstein.

Purchased Feed System

A dairy feed program requiring lower initial land and machinery investment, leaving more management time to focus on herd skills, but carrying feed price dependency.

Home-Grown Feed Program

A feed production system where the farm raises all or most forages and part of concentrates, providing high quality and lower feed unit cost at the expense of higher initial capital for land and machinery.

Age at First Breeding Goal

The recommended benchmark for initially breeding dairy heifers, targeted at $15\,\text{months}$ of age and a body weight of $350\,\text{kg}$.

Age at First Calving Goal

The target life cycle goal for a dairy heifer to deliver her first calf, established at $24\,\text{months}$ of age.