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Energy Balance by Carbon and Nitrogen Balance Technique in White Leghorn and Rhode Island Red Hens Fed Maize- and Broken Rice-Based Diets |
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S. B. Jadhao, C. M. Tiwari, Chandramoni, M. Y. Khan |
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| Abstract |
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Carbon (C) and nitrogen (N)balance technique was used to determine energy balance in Rhode Island Red (RIR) and White Leghorn (WL) laying hens fed maize-and broken rice (BR)- based diets. Carbon and nitrogen intake and outgo were determined for three days on ad libitum fed diets followed by 2/3 of ad libitum intake for next three days. Carbon analysis was done by using four `U` tubes in which carbon dioxide released during bomb calorimetry was absorbed on drierite in tube 1 and 2 whereas tube 3 and 4 contained sodalime self indicating granule. Carbon in CO2 was determined by an open circuit respiration system. Energy retention (E, kcal) was calculated as E + 12.386 C (g) - 4.631 N (g). By regressing metabolisable energy (ME) intake on energy balance, maintenance ME requirement of RIR was 128 whereas, that of WL hens was 144 kcal/kg W0.75 /d. Effciency of utilization of ME for maintenance from BR-based diet in RIR hens was equal but in WL hens it was 11% less than maize-based diet. |
| Keywords:
Carbon. Nitrogen Balance; Maize and Broken Rice-Based Diet; RIR Hens; WL Hens; Maintenance ME Requirement |
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