Relativity of growth in laboratory and farm animals: II. Birth weight as a predictor of animal maturity

T. C. Bridges, L. W. Turner, R. S. Gates, E. M. Smith

Research output: Contribution to journalArticlepeer-review

Abstract

In this article the growth curves of individual animals for various species were examined to determine the relationship between birth weight and mature size. For the genotypes studied, the birth weight fraction of maturity (Fb) was found to range from approximately 0.6% to approximately 10% of mature size. Generally, for most species in this study it was found that Fb increased as birth weight became larger and the female of the species generally demonstrated a larger fraction of maturity at birth than did the male animals of the same breed. An equation was developed to predict Fb for each genotype with varying degrees of success. Using the developed equation and the birth weight of an individual animal, a physiologically based estimate of the animal's mature size can be obtained.

Original languageEnglish (US)
Pages (from-to)1811-1819
Number of pages9
JournalTransactions of the American Society of Agricultural Engineers
Volume43
Issue number6
DOIs
StatePublished - 2000
Externally publishedYes

Keywords

  • Animal growth
  • Growth curve
  • Growth rate time constant

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

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