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تقييم بعضالاضافات في تقليل اثر الاجهاد الحراري في بعض الصفات الانتاجية والفسلجية لفروج اللحم == Evaluation of Some Additive To Reduce The Effect of Heat Stress in Some Productive and Physiological Traits of Broiler Chicken
Author name:
مغارب محمد جادر حيمد العيداني
Supervisor name:
رياض كاظم موسى
General topic:
Agricultural sciences
Specific topic:
Zoology - Education
Degree:
Master
University:
University Of Basrah - Faculty Of Agriculture
Language:
Arabic
University location:
Basrah
First pages:
31T1865 - p.pdf
Abstract:
This experiment was carried out at the Poultry Field of Animal Resource Department , College of Agriculture , University of Basra from May 1st to Jun, 2014. The objective of this study was to evaluate many treatments and a methods to decrease the effect of heat stress on the productive performance and some blood physiological characteristics of broiler. A total of 216 un sexed chicks of Ross breed one day old were used in this experiment. Chicks were randomly distributed into six treatments (three replicates of 12 birds in replicates) for each treatment. The treatments were as follows : 1. First treatment (T1) : The control group without any supplement.2. Second treatment (T2) : Supplement 1.5 ml of prebiotic per/liter of water for each chick and adlibitum feeding.3. Third treatment (T3) : Supplement 500 mg of Vitamin C per/liter of water for each chick and adlibitum feeding .4. Fourth treatment (T4) : Supplement 200 mg of Vitamin E per/liter of water for each chick and adlibitum feeding .5. Fifth treatment (T5) : Supplement 600 mg of potassium chloride (KCl) per/liter of water for each chick and adlibitum feeding .6. Sixth treatment (T6) : Fasting for 24 hours and follow up with ad labium feeding .The results can be summarized as follows;1. There was a significant effect of treatments on heat - stress reducing the effect of on some productive and physiological traits of broiler (P<0.05) compared to the control group in most traits.2. There was a significant increase in body weight, weekly weight gain ,feed intake and feed conversion ratio as vitamin C was silted compared with other treatments.3. There was a significant decrease in weekly water intake of vitamin C group and vitamin E group in comparison with other treatment.4. Highest values of productive index were obtained by the treatment of prebiotic in drinking water as compared to other treatments group.5. Treatment of vitamin C in drinking water showed the highest values in vit. carcass weights, dressing percentage, heart and liver weights. Whereas, it showed less value of fabrisha gland percentage weight in comparison with other treatments.6. There was no significant effect of treatments using to decrease heat stress on the gizzard percentage weight.7. Treatment of vitamin C add in drinking water showed less body temperature at last three weeks of age in compared with other treatments.8. Treatment of vitamin C add in drinking water showed highest value of RBC, HB, PCV and total protein, whereas it showed less values of white WBC percentage of hetrophile to lymphocyte cells, acid and compared to other treatment cholesterol , uric numbers in comparison with other experimental treatment.9. There was no significant differences in concentrations of serum GOT, GPT. Enzymes in serum treated groups. Whereas, treatment of 24 hours fasting followed up by a libitum feeding till the next day, showed less values of T3 T4 hormone concentration in comparison with other treatments.10. Treatment of vitamin C supplement proceeded in the values of calcium chloride and sodium concentrations in serum plasma, whereas treatment of potassium in drinking water showed highest values of serum potassium concentration compared to other treatments.
