Milk Production and Composition: Terms and Definitions, Quizzes of Animal Biology

Download Milk Production and Composition: Terms and Definitions and more Quizzes Animal Biology in PDF only on Docsity! TERM 1 milk DEFINITION 1 the lacteal secretion obtained by the complete milking of one or more healthy dairy animals, practically free of colostrum TERM 2 avg. milk composition DEFINITION 2 87.3% H2O 3.7% Fat 3.4% Protein 4.9% Lactose 0.7% Ash TERM 3 North American Dairy Breeds DEFINITION 3 Shorthorm Brown Swiss Ayrshire Guernsey Jersesy Holstein TERM 4 Typical Lactation Curve after Peak DEFINITION 4 declines at about ~9% per month TERM 5 mammary gland DEFINITION 5 skin glandproduction capacity is linked to capacity for secreting hormones that stimulate growth of mammary gland, milk secretion and letdown TERM 6 udder DEFINITION 6 4 glands per udderright -connective tissue- leftback- thin membrane- front TERM 7 Circulatory System DEFINITION 7 Blood:MIlk Volume= 400-500:1quartTop: External Mammary Artery & External Pubic Vena CavaBottom: Cranial Epigastric Artery & Subcutaneous Abdominal Vein TERM 8 Alveoli DEFINITION 8 synthesize and secrete milk TERM 9 Lobules/Lobes DEFINITION 9 squeeze milk out of alveoli TERM 10 Ducts DEFINITION 10 the tubing by which milk moves from the alveoli to the teat for milk removal TERM 21 Vitamins/Water DEFINITION 21 Filtration/IntestineB vitamins in RumenA & D depend on feed and body stores TERM 22 Letdown Reflex (milk ejection) DEFINITION 22 stimulation>brain>posterior pituitary gland> (release of oxytocin into bloodstream)>myoepithelial cells of alveoli TERM 23 Prolactin DEFINITION 23 released when milking occuresstimulates subsequentcylce production of milk TERM 24 residual milk DEFINITION 24 about 15-25% of the total amount of milk in the udder at the start of milking is not removed during milking. TERM 25 cause of adrenalin in system DEFINITION 25 less blood flow=> less oxytocin being transportedrelaxes alveoli TERM 26 DEFINITION 26 Massage phase (mouthpiece collapses around teat)atmoshpheric pressure in shell TERM 27 DEFINITION 27 Suction Phase (mouthpiece opens)Vacuum in shell TERM 28 DEFINITION 28 Milk Receiving Tank Balance Tank Portable Milking Unit Milk Cooling Tank Jetter Tray Wash Tank Milking Station Vacuum Line Milk Line Vacuum Pump TERM 29 DEFINITION 29 Vacuum Pump Vacuum Pipeline MIlk Cooling tank MIlk Pipeline TERM 30 DEFINITION 30 HEAT EXCHANGE TERM 31 DEFINITION 31 Temp less than 45 degrees w/in 2hrsBacteris 100,000/ml (Mi avg >10,000)NO ANTIBIOTICS PRESENT750,000/ml