Journal
WORLDS POULTRY SCIENCE JOURNAL
Volume 66, Issue 2, Pages 227-239Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0043933910000280
Keywords
growth functions; poultry; growth; age; intake
Categories
Ask authors/readers for more resources
Poultry industries face various decisions in the production cycle that affect the profitability of an operation. Predictions of growth when the birds are ready for sale are important factors that contribute to the economy of poultry operations. Mathematical functions called 'growth functions' have been used to relate body weight (PO to age or cumulative feed intake. These can also be used as response functions to predict daily energy and protein dietary requirements for maintenance and growth (France et al, 1989). When describing growth versus age in poultry, a fixed point of inflexion can be a limitation with equations such as the Gompertz and logistic. Inflexion points vary depending on age, sex, breed and type of animal, so equations such as the Richards and Lopez are generally recommended. For describing retention rate against daily intake, which generally does not exhibit an inflexion point, the monomolecular would appear the function of choice.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available