Milk variability & economics of milk production
10 important questions on Milk variability & economics of milk production
How old is lactation?
What are the three ways to study/understand the origin of lactation?
- Water source for eggs
- Skin protection
- Genetic similarity between mammals
How does the skin protection looks like? And why do only mammals produce sweat?
Ze produceren alle drie XOR & Lysozyme
Alleen de mammary glands produceert ook nog fat droplets (XOR), lactose (Lysozyme), alfa-lactalbumin (Lysozyme)
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What are the genetic similarities between mammals?
- Large similarity in genes involved in lactation
- Many genes have multiple copies
- Proteins needed for fat secretion are the most similar: milk as a transport vehicle for fat from mother to newborn
Why do newborns need milk? (3)
- Nutrition
- Immunity
- Development
- For the development of the immune system
- Easy to digest
- Essential nutrition
- Development of microbiota
- Connecting mother to infant
One of the three main functions of milk is nutrition. Where can nutrition be diffident in?
- Fat
- Protein
- Lactose
Are always present - little variation
- Fat 1-70%
- Protein 1-13%
- Lactose 2,5-10%
- is important for the osmotic pressure (so little variation)
Lots of variation
Milk contains components that are important dor development of the newborn. Give 3 examples where this is important for?
- Intestinal tract
- Brain
- Behavior
What percentage of dairy farms worldwide has < 10 cows?
Where in the world is the cost of producing milk the highest?
Feed and land make costs high (in China)
The climate (Canada)
Where is Dutch milk being used for?
- Cheese 56%
- Milk powder 15%
- butter and butteroil 2%
- condensed milk 6%
- drinking milk and other fresh milk products 7%
- Other 14%
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