Using some natural additives to improve physiological and productive performance of broiler chicks under high temperature conditions. 1- Thyme (Thymus Vulgaris L.) or Fennel (Foeniculum Vulgaris L.)
Abstract: Three hundreds unsexed one day old Arbor Acres broiler chicks were assigned into three groups, 100 birds in eachwith two replicate floor pens, fed on commercial diet or enriched with grounds of 1% thyme or 1% fennel under normal conditions. At 35 days of age, each group was divided into equal two sub-groups. First: still under normal conditions 24?C, second: exposed to 38?C for 3 hrs to 6 days from 35 to 40 days of age.
Adding of thyme or fennel grounds as natural feed additives to broiler diets under normal or high temperature conditions (P <0.05) increased live body weight gain, improved feed conversion, total plasma protein as well as albumin and globulin, plasma glucose and plasma triiodothyronine ( T3). Whereas, mortality rate, plasma cholestrol, plasma total lipids, GPT and GOT were reduced (P < 0.05). but, creatinine or weight of liver, spleen, bursa of fabricus and intestine were not affected. Also, there was significant ( P < 0.05) decrease in respiration rate and body temperature, minimization the increase of blood pH, during heat expose. There was ( P< 0.05) decrease in body weight, gain, feed consumption, ( T3), plasma glucose and the total plasma proteins, and ( P< 0.05) increase in mortality rate, body temperature and respiration rate corresponding to high temperature conditions.
Keywords: natural additives, physiological, broilers, heat strees.
Publication year 2003
Pages 313-326
Availability location Animal Health Research Institute (AHRI) --Nadi El-Said Street - Dokki - Giza
Availability number
Organization Name
City الاسكندرية
serial title Egypt.ian Poult.ry Science
Department Poultry Breeding Research Department
Author(s) from ARC
Agris Categories Animal physiology - Reproduction
AGROVOC
TERMS		 Additives. Broiler chickens. Environmental temperature. Heat. Performance testing.
Publication Type Journal
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