Research Note: Effect of High Ambient Temperature on Dietary Metabolizable Energy Values in Genetically Lean and Fat Chickens
1992; Elsevier BV; Volume: 71; Issue: 12 Linguagem: Inglês
10.3382/ps.0712113
ISSN1525-3171
AutoresPierre‐André Geraert, Solange Guillaumin, Z. Zuprizal,
Tópico(s)Aquaculture Nutrition and Growth
ResumoEffect of high ambient temperature (32 versus 22 C) on dietary ME value was investigated in 32 genetically lean and fat 8-wk-old male chickens. Lean broilers exhibited higher AME and TME values than fat chickens. Hot climatic conditions significantly increased AME and TME values, particularly in leaner birds. Protein retention efficiency was enhanced by selection for leanness and increased with ambient temperature. Correction for nitrogen balance (AMEn and TMEn) reduced the effect of temperature but lean genotypes still revealed higher TMEn values than fatter ones.
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