METHODOLOGY FOR REPORTING OF THE ENERGY AND PROTEIN TRANSFORMATION IN THE ECO-TECHNICAL CHAIN “FEED-EGG MELANGE” BY LAYING HENS THROUGH INTRODUCING OF “CLARC OF ENERGY TRANSFORMATION/CLARC OF PROTEIN DISTRIBUTION”

Abstract

A methodology to account for transformation of metabolizable energy and crude protein in compound feed for laying hens to energy and protein in egg melange (albumen and egg yolk) has been developed. The introduction of Clarc of metabolizable energy transformation and Clarc of crude protein distribution could help to more exactly account of net utilization of nutrients in the eco-technical feed chain. “Clarc” is the ratio of the nutrients studied between primary (feed) and secondary level (animal products, edible by humans). For their establishing, original formulas have been used. They could be used in at least three important areas – ecological (bio-transformation); selectional (development of objective selection criteria and indices) and technological (as indicators to improve the feeding and housing technologies). In the scientific experiment the following values of energy and protein transformation in experiments with laying hens from Lohman Brown Klassik hybrid are observed: Clarc of metabolizable energy transformation (fodder-egg melange) – 0.2313 (23.13%); Clark of crude protein distribution (fodder-egg melange) – 0.2096 (20.96%).

Keywords

• crarc of energy transformation
• clarc of protein distribution
• “fodder-egg mélange”
• layers