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Questions and Answers
What is the main source of milk fat synthesis in the udder?
What is the main source of milk fat synthesis in the udder?
Where does milk fat globules (F.G.) originate from in the udder?
Where does milk fat globules (F.G.) originate from in the udder?
What is the average size of milk fat globules (F.G.)?
What is the average size of milk fat globules (F.G.)?
What affects the size of fat globules in milk?
What affects the size of fat globules in milk?
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What is the composition of the outer membrane of milk fat globule (F.G.)?
What is the composition of the outer membrane of milk fat globule (F.G.)?
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Study Notes
Milk fat synthesis
- Origin: Primarily occurs in mammary epithelial cells (MECs)
- Source: Primarily from blood-borne fatty acids, supplemented by de novo synthesis in the udder
Milk fat globule (F.G.)
- Origin: Assembled in the MECs
- Structure: F.G. are spherical droplets of fat surrounded by a membrane.
- Average size: Around 3-5 micrometers in diameter
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Size variation:
- Species: varies across species (e.g., cattle vs. goat)
- Breed: varies within species depending on breed
- Diet: influenced by diet (e.g., high-fat diet may lead to larger F.G.)
- Stage of lactation: can change during the lactation cycle
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Membrane composition:
- Phospholipids
- Cholesterol
- Proteins (e.g., xanthine oxidase, butyrophilin, CD36)
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Description
Test your knowledge on the process of milk fat synthesis in the udder and the involved cellular components such as epithelial cells, mitochondria, Golgi body, and more.
