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Some managerial and environmental conditions affecting on productive and physiological characteristics in quail
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Abstract: Three experiments were performed to asses the effects of exposure to acute stress on the performance of Japanese quail chicks from one-day old to six weeks of age.
In all experiments, birds raised in heated batteries under continuous ,lighting, free feeding and watering regimes. Birds fed a commercial atatter diet (24% CP., 2900 Kcal ME/kg and 3.2% CF). All experiments were started at one-day old and ended at six weeks of age.
The results indicated that body weight was significantly decreased in 4 hr's-HS (40°C) group at 3,4 and 5 wks. The highest B.W was in A.A (500 mg) fed group. Food intake decreased in heat-stressed (2 and 4 hr's) and heat-distressed (H.S+fasting) groups. Water consumption and mortality increased as H.S period increased.
Rectal temp. and respiration rate increased after exposure to heat stress in all groups except AA-fed groups at all ages. RBCs number decreased in all groups except 2 hr's-heated and 8 hr's-fasted groups. WBCs number decreased in all groups at all ages. H/L ratio increased in all groups at all ages except AA-fed groups at 4 and 6 wks. Ht and Hb decreased at all ages in all groups except 8 hr s - fed and AA-fed groups.
Plasma corticostorone increased while T3 and TPP decreased in all groups at all ages except AA (500 mg) - fed group at 4 and 6 wks of age. Plasma Calcium, phosphorus sodium and potassium levels decreased in all groups at all ages.
These results suggest that AA addition to the feed could ameliorate the negative effects of acute H.S in Japanese quail.
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| Publication year |
1999
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| Pages |
184p.
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد - الدقى - الجيزة
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| Availability number |
633
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| Organization Name |
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| Country |
Egypt
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| Department |
Poultry Breeding Research Department
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| Author(s) from ARC |
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| Agris Categories |
Animal physiology - Reproduction
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AGROVOC
TERMS |
Environmental management.
Management.
Performance testing.
Quails.
Stress.
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| Publication Type |
PhD Thesis
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