AN_SCI 1011 Lecture Notes - Lecture 1: Myoepithelial Cell, Mammary Gland, Negative Energy
8 May 2019
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Produce a high quality, nutritious, product to meet consumer demand. Aka produce milk, which is a renewable resource. Nutrition was original concern-- now different products like yogurt and ice cream. Use the natural resources of feed, fuel and water efficiently. Bio conversion--feed cow higher value product more $ Composition and synthesis-- nutrition of affects milk. In negative energy balance until feed intake can catch up. It"s hard to breed cow bc breeding is during a negative energy balance. Peak at 45-60 dim (days in milk) Persistency-- degree to which mp is maintained, about 10% decrease a month. Keep mp through nutrition, high energy, keep milking them. Milk removal is a stimulatory for more milk and hormones released at milking. ie prolactin released during milking--promotes milk let down. So can the sights and sounds of the milking parlor. Oxytocin released from the posterior pituitary into the blood and carried around the body. Specifically, to the mammary gland-- causes milk let down.
