Lecture 15 - Requirements for Production Flashcards
What is the most “expensive” activity?
Flying, at 3,5-10 x BMR
Then Lactation, Growth and Shedding
the pattern by which animals grow from conception to maturity can be seen in a graph as a … shaped curve
Sigmoid
True or False:
The various parts of the animal, defined as the anatomical bone components, organs and tissues grow at different rates.
The chemical composition of body varies from birth to the adult phase
Both true
how can the amount of milk produced in a natural process like breastfeeding be estimated?
weight the litter before and after feeding
the analysis of the Chemical Composition of Milk reveals that the fat is the component which is most related to the … content
energy (importante perché sono fissate con la cosa del contenuto di grasso nel latte)
Adnexa
The organs and tissues that grow with the foetus
Given that the gestation period of a pig is about 3 months, 3 weeks and 3 days, supplementing should be considered at about…
2 months, 2 weeks and 2 days
For all species, it should be considered in the last 1/3 of pregnancy
Energy requirements for maintenance, pregnancy, lactation etc are expressed in net, gross or metabolizable energy?
As metabolizable energy, as kcal per kg of metabolic body weight (kcal/kg of BW0.75)
Which requires more energy? Pregnancy or lactation?
lactation, e.g. in rats the required energy is double or triple compared to maintenance.
For pregnancy it’s about 25% higher.
the amount of energy consumed (in Joules) to transport one unit of body mass (in grams) over one unit of distance (in kilometres) is the…
Cost of transport
the amount of energy consumed (in Joules) to transport one unit of body mass (in grams) over one unit of distance (in kilometers) is the…
Cost of transport
True or false
COT decreases linearly as the mass of the animals increases, regardless of the mode of transport.
True
