[The effect of feeding frequency on the results of metabolism-oriented lysine requirement determination and nitrogen balance in broiler chicks].
Two feeding regimes were used for investigation into the effect of meal frequency on the lysine requirement in chickens estimated with metabolism-oriented determination. 1-day-old male broiler chickens were fed either twice a day for 1 hour (one group) or 6 times a day for 1/2 hour (other group). 7 to 21 days posthatching the birds received a wheat-wheat gluten diet which was L-lysine-supplemented at 6 levels. Using lysine deficient diets chickens fed twice a day eat more and grow faster than chickens fed 6 times a day. The N-balance was 6 to 7% higher in the case of the feeding regime 2 times a day. After feeding period 14C-U-L-lysine was injected intravenously and 14CO2-excretion measured. The estimated range for lysine requirement was 11.9-13.1 g lysine/kg DM and 13.1-14.3 g lysine/kg DM for chickens fed 2 times and 6 times a day, respectively. A feeding regime of 6 meals a day does not improve the utilization of diets contains crystalline lysine compared with feeding of 2 meals a day.
Institut für Ernährungsphysiologie der Humboldt-Universität zu Berlin, Germany.
H
H
Bergner
B
B
Mnilk
D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000254:growth & development / Q000378:metabolism*; D004435:Eating / Q000502:physiology*; D008239:Lysine / Q000008:administration & dosage*; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D015430:Weight Gain
D008239:Lysine; D009584:Nitrogen
Einfluss der Fütterungsfrequenz auf das Ergebnis der stoffwechselorientierten Lysinbedarfsbestimmung und der N-Bilanz bei Masthähnchen-Küken.