유추에 의한 대사에너지 측정방법에 관한 연구 3 보 . 육계전용종에 있어서 시험개시시기 ( 일령 ) 및 크롬분석방법 ( 산화크롬 혹은 크롬원소 ) 이 곡류의 대사에너지가에 미치는 영향 = Studies on Procedures for Determining Metabolizable by Energy Chicks 3 . Effects of periods ( days ) and chromium ( chromic oxide or chromium ) analytical methods on the metabolizable energy of grains for broiler

다국어 초록 (Multilingual Abstract)

The nitrogen corrected metabolizable energy (MEn) of corn and wheat in chicken were compared among ages of chicken (15, 30 and 45 days after hatching), and between analytical methods of Chromium and Chromic oxide as a indicator method by using 210 birds of meat type chicken. Both tested feed were substituted 30% with feed basis in a commercial chicken ration. The results obtained were as follows : 1. In the 15, 30 and 45 day-old chickens after hatching the MEn of corn were 3,350, 3,398 and 3,372 ㎉ per ㎏ of corn respectively. In comparison of analytical methods between Cr and Cr₂O₃ the MEn of corn were 3,306 and 3,340 ㎉ per ㎏ respectively. Non significant differences (P$gt;.05) were found among chicken ages and between analytical methods. 2. The MEn of wheat were 3,246, 3,269 and 3,283 ㎉ per ㎏, for chicken age of 15, 30 and 45 days after hatching respectively. The MEn of wheat appeared non significant difference (P$gt;.05) among chicken ages. Also, non significant differences (P$gt;.05) were found between Cr and Cr₂O₃ method, of which the MEn were 3, 256 and 3, 276 ㎉ per ㎏ respectively. 3. In conclusion, there were appeared non significant differences among ages and between analytical methods in measuring the MEn of corn and wheat. Therefore, the Cr analytical method that is easier handling in analysis than that of the Cr₂O₃ for measuring ME in chicken might be recommended.