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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Recovery from adverse effects of heat stress on slow-growing chicks in the tropics 1: Effect of ascorbic acid and different levels of betaine
Tropical Animal Health and Production, Volume 41, No. 5, Year 2009
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Description
Three hundreds, 21 d-old slow-growing chicks were randomly divided among 5 treatments, of 5 replicates each. Each replicate contained 12 unsexed chicks housed in (1∈×∈1) a floor pen. A group was kept under thermoneutral condition at 28∈±∈4°C and RH was 55∈±∈3% during 21-84 d of age (positive control) and fed corn-soybean meal diet. The other four groups were kept for three successive days per week under heat stress (HS) at 38∈±∈1.4°C and 49∈±∈2% RH from 12.00 to 16.00 pm. Chicks in HS treatments were fed corn-soybean meal diet without (negative control) or with 250 mg AA/kg diet and Bet at 0.5 and 1 g/kg diet. HS decreased productive performance, increased (P∈<∈0.05) meat dry matter, plasma triglyceride and serum calcium whereas decreased (P∈>∈0.05) plasma glucose, serum total protein and water holding capacity (WHC) of meat. AA and 1 g of Bet/kg diet was equally potent for partial relief (P∈<∈0.05) of the negative effect of HS on growth, increased (P∈<∈0.05) feed intake, protein digestibility (P∈<∈0.05), dressing out percentage, liver and giblets, whilst improved (P∈<∈0.05) feed conversion ratio (FCR). Also, a complete recovery from the negative effect (P∈<∈0.05) of HS shown on plasma glucose and partial recovery (P∈<∈0.05) observed in total protein, triglyceride, blood pH, packed cell volume (PCV), hemoglobin (Hgb), rectal temperature (RT) and respiration rate (RR) and improved humoral immune competence to sheep red blood cell (SBRCs) test. © 2008 Springer Science+Business Media B.V.
Authors & Co-Authors
Attia, Youssef Abd El Wahab
Egypt, Damanhour
Faculty of Agriculture
Hassan, R. A.
Egypt, Giza
Animal Production Research Institute Apri
Qota, El M.A.
Egypt, Giza
Animal Production Research Institute Apri
Statistics
Citations: 126
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1007/s11250-008-9256-9
ISSN:
00494747
e-ISSN:
15737438
Research Areas
Environmental