Publication Date
1985
Location
Kyoto Japan
Description
Influence of the age of chicken on the nitrogen corrected metabolizable energy (MEn) value of alfalfa leaf protein concentrate (LPC) was investigated. Chickens of various ages were fed diets containing certain amounts of the LPC, and droppings were collected quantitatively. The MEn of the diets was determined as the difference between consumed energy and excreted energy which was corrected with retained energy as body protein. Then the MEn value of the LPC was calculated using the values of the LPC containing diets and that of cornstarch which was obtained from data for a LPC-free diet. As a result, the MEn value of alfalfa LPC was quite low for the 1-week-old chicks when compared with those for the chicks more than 3 weeks of age. On contrary, soybean protein(SBP) used as a reference did not show such a tendency. Average MEn value of the alfalfa LPC was 5.84 kJ/g for 1-week-old chicks and 11.25 kJ/g for chicks of more than 3 weeks of age, and that of the SBP was 12.20 kJ/g. Usually, alfalfa LPC was not inferior to SBP as an energy source, while it was not advisable to use alfalfa LPC as an ingredient of a diet for very young chicks since its MEs value was very low for such chicks. The MEn value of cornstarch was quite uniform irrespective of ages of chickens, being 14.34 kJ/g.
Citation
Terapuntuwat, S and Tasaki, I, "Influence of the Age of Chicken on the Metabolizable Energy Value of Alfalfa Leaf Protein Concentrate" (1985). IGC Proceedings (1985-2023). 30.
(URL: https://uknowledge.uky.edu/igc/1985/ses9/30)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Influence of the Age of Chicken on the Metabolizable Energy Value of Alfalfa Leaf Protein Concentrate
Kyoto Japan
Influence of the age of chicken on the nitrogen corrected metabolizable energy (MEn) value of alfalfa leaf protein concentrate (LPC) was investigated. Chickens of various ages were fed diets containing certain amounts of the LPC, and droppings were collected quantitatively. The MEn of the diets was determined as the difference between consumed energy and excreted energy which was corrected with retained energy as body protein. Then the MEn value of the LPC was calculated using the values of the LPC containing diets and that of cornstarch which was obtained from data for a LPC-free diet. As a result, the MEn value of alfalfa LPC was quite low for the 1-week-old chicks when compared with those for the chicks more than 3 weeks of age. On contrary, soybean protein(SBP) used as a reference did not show such a tendency. Average MEn value of the alfalfa LPC was 5.84 kJ/g for 1-week-old chicks and 11.25 kJ/g for chicks of more than 3 weeks of age, and that of the SBP was 12.20 kJ/g. Usually, alfalfa LPC was not inferior to SBP as an energy source, while it was not advisable to use alfalfa LPC as an ingredient of a diet for very young chicks since its MEs value was very low for such chicks. The MEn value of cornstarch was quite uniform irrespective of ages of chickens, being 14.34 kJ/g.
