Lecture 3a - Lactation and milk production Flashcards
What is milk?
Secretion of the mammary gland
What is milk usually associated with?
The birth of offspring
What is milk controlled by?
Endocrine control
Factors which affect milk production?
Genetic potential
Nutrition and feeding
Management practices
Lactation is..
Highly physically demanding
More energy is required to support lactation than to support?
Gestation
Animals draw on what kinds of energy during lactation?
Dietary energy and energy stored in body tissues
Insufficient dietary energy intake + lactation =
Body tissue catabolism and body weight loss
Excess dietary energy intake + lactation =
Body tissue anabolism and body weight gain
How many bacterial cells can come from a healthy udder?
<100 to 10000 bacterial cells per ml of milk
How many bacterial cells can come from an infected udder?
<500 to millions of bacterial cells per ml of milk
What are some pathogenic bacteria?
Brucellosis
Tuberculosis
What is the test for bacterial cells?
Bactoscan, heat treatment of milk
Where can somatic cells come from?
Immune cell systems
Sloughed udder cells
Test for somatic cells?
Somatic cell count
What drug residues can be left behind in milk?
Vetinary medicines such as antibiotics
What are the three different types of milk production?
Milk as a primary product
Milk and meat produced from dual purpose animals
Milk as a secondary product
When does keeping of poultry date back to?
Egyptian, Roman and Ancient Chinese times
How many weeks laying are in modern UK production systems?
55 weeks laying
What are the 5 common systems of egg production?
Caged Barn Free range Organic 'Back yard' hen keeping
