Related Experiment Video
Updated: Jun 19, 2026

In Ovo Feeding of Commercial Broiler Eggs: An Accurate and Reproducible Method to Affect Muscle Development and Growth
Published on: September 20, 2021
PHYSIOLOGICAL ONTOGENY : A. CHICKEN EMBRYOS. VII. THE CONCENTRATION OF THE ORGANIC CONSTITUENTS AND THE CALORIFIC
1Hospital of The Rockefeller Institute for Medical Research, New York, and the Biochemical Laboratory, University of Cambridge, Cambridge, England.
Abstract:
1. The water, ash, glycogen, nitrogen, and ether extract content of the tissues of chicken embryos were determined between the 5th and the 19th days of incubation. 2. It was found that the concentration of solid substance changed from approximately 5 to 17 per cent during this interval. The chief change in the organic substances involved a relative decrease in the nitrogen as compared with the fat. 3. Bomb calorimetric estimations confirmed these findings. It was shown that the calorific value of the dried substance increased with age. 4. The rate of growth of the total solids, and of the potential energy of the tissues was estimated. 5 Various theoretical considerations were brought forward dealing chiefly with the order in which the chief organic substances, carbohydrate, protein, and fat could be ranged when judged by various criteria.
Related Concept Videos
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Energy Budgets and Reproductive Strategies
Oxygen Requirements and Growth Patterns
Production Efficiency
Derivatives: Problem Solving

