Determaination of metabolizable energy and amino acid content of some feedstuffs for poultry using adult roosters and broiler chicks.
Abstract: Two trails were conducted using adult roosters and 5-week-old broiler chicks to detennine the metabolizable energy (AME, AMEn, TME and TMEn) and amino acid content of canola meal (CM), linseed meal (LM), poultry by-product meal (PBPM), meat and bone meal (MBM) and fish meal (FM) obtained randomly from the Egyptian market.
An ad-libtillm total excreta collection procedure was used in both trails. To dctennine the TME, the group of fed birds was compared to a group of fasted birds to develop estimates of endogenous energy losses. Proximate analysis, digestible coefficients of the nutrients and amino acid content of tested materials were also detennined.
Results indicated that CM and LM contained moderate CP% (29.17 with 77.8% digestibility for CM and 27.92% with 78.4% digestibility for LM) and high crude fiber content (12.3% with 36.1% digestibility for CM and 10.5% with 38.2% digestibility for LM), but rich in Met and Cys. Poultry by-product meal was high in CP (65% with 86.6% digestibility) and fat (15.2% with 75.7% digestibility), rich in Cys and Val but deficient in Met. However, MBM and FM contained CP values less than those recommended by the supplier. Meat and bone mealis low in Met and Lys but high in Cys whereas, FM is rich in Met and Lys but deficient in Cys. Digestible coefficients of CF and NFE of the feedstuffs using broiler chicks were lower than those obtained from adult roosters. Metabolizable energy values of AMEn, and TMEn using adult roosters were 1833 and 2044; 1813 and 2035; 4202 and 4656; 2552 and 3044; 2655 and 3090 Kcal/Kg for CM, LM, PBPM, MBM and FM, respectively. The corresponding values of the same feedstufIs using broiler chicks were slightly lower. The TME values using adult roosters were significantly higher than those of AME values.
Keywords: metabolizable energy. amino acids. poultry feedstuffs. broiler chicks. adult roosters.
Publication year 2003
Pages 29-41
Availability location معهد بحوث الانتاج الحيوانى
Availability number
Organization Name
City القاهرة
serial title Egyptian J. Nutrition and Feed.
Department Poultry Nutrition Research Department
Author(s) from ARC
Agris Categories Animal feeding
AGROVOC
TERMS		 Amino acids. Broiler chickens. Energy value. Feeds. Layer chickens.
Publication Type Journal
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