Real, Live Milking Machines

The real on-site milking machine is located at the edge of the campus, through the colorful gardens of Orfaleea Business School, and outside the busy playground where students play frisbee and capture, on the unpaved mountain Highland Avenue. Bishop road metric ton. The Bishop Road has a crop unit, a campus orchard, a veterinary unit, and the Eugene and Rachel Boone dairy science complex, well known as Cal Poly Dairy. On a fine Tuesday afternoon, past the dairy farm, I was greeted with 15 or so calf caught in an oversized doghouse called "hut". I tried to suck my pants so I stroked them and I looked up to meet their mother in a long cage that was several feet away.

Cows developed for dairy products are considered to be milking machines only - during pregnancy, during birth, during milking, until circulating until the body is discharged, or until milk production does not increase I will. Calves for calves were torn from their mothers and trapped in crate. They are given an iron milk substitute and become anemic. By the time of slaughter, many calves were too weak to walk. Chicks raised for meat are so fast that we often can not walk without pain. Octanoic acid containing ammonia in the air can cause problems of severe skin and throat irritation, blindness, fatal breathing. The abuse of factory farm workers is also very troubling. According to a MFA survey, workers stabbed chickens with spike bars, strangled birds, torn the limbs of live chickens.

The dairy life is developed mainly in dairy farms. Each lactating cow is milked at least twice a day in the living room. Large amounts of engineering are designed to design milking parlor and milking machine. Efficiency is very important; the time saved by milking cows increases by several hours per cow. Human engineers are still indispensable in most facilities, but milking is now almost entirely done on machines. The most common milking machine is called a cluster milking machine. This milker is made up of four metal cups - one on each nipple - each metal cup backed with rubber or silicon. The clusters are connected to a milk collection system and a pulsatile vacuum system. When the vacuum turns on it sucks air from the outer metal cup and lining and pulls out the milk from the nipple. Turning off the vacuum gives the nipple the opportunity to refill milk.

Milking machines are automatically locked in by a vacuum system that draws ambient air pressure of 15 to 21 pounds per square inch (100 to 140 kPa). Vacuum is also used to lift milk vertically through a small diameter hose to the tank. The milk lift pump passes through the large diameter stainless steel pipe, passes through the plate cooler, sucks the milk from the receiving tank, and then enters the refrigerated bulk tank. Milk is extracted from the cow's chest by a soft rubber sheath called a liner or liner surrounded by a hard air chamber. During the milking process pulsating ambient air flow and vacuum are applied to the expansion air chamber. When the ambient air is allowed to enter the room, the vacuum inside the aeration collapses the expansion around the cow's nipple and the milk from the nipple is squeezed out like the infant's calf mouth.