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The physiological and immunology effects of some natural feed additives in layer hen diets
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Abstract: A total number of 120 white Bovans pullets (30- week old ) were used. Birds were divided to four equal groups. The treatments were 2% black seed (T1), 2% Garlic (T2), 2% fenugreek (T3) and 0 additive (control). Birds were exposed to 17 hrs light daily. Feed and water were ad libitum. All treatments lasted two months beginning from the second month of the experiment.
Results indicated that black seed improved body weight during and after treatment. All treatments resulted in a decrease in feed consumption during the first two weeks of the treatment. However, after switching to the basal diets, birds returned to the normal consumption. No significant differences were observed between treatments in feed conversion. Adding black seed and garlic decreased serum cholesterol level during 8 weeks of treatments by 13% and 18%, respectively. Serum high density lipoportein (HDL) showed the same trend. However, yolk cholesterol was decreased by 15% and 20% in response to black seed or garlic, respectively. The same trend was observed for liver cholesterol. Primary response to sheep red blood cells (SRBC’s) was higher in fenugreek (90.30) than garlic (73.49), black seed (73.49) and control (70.60). while at secondary response, values of 387.97, 361.83, 338.73 and 215.15 were obtained when using garlic, black seed, fenugreek and control, respectively.
Keywords: layers, immune, feed additive.
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| Publication year |
2002
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| Pages |
175-203
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| Availability location |
معهد بحوث الانتاج الحيوانى - شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
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| City |
الاسكندرية
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| serial title |
Egyptian Poultry Science
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| Author(s) from ARC |
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| External authors (outside ARC) |
احمد محمد الاياتى
جامعة القاهرة
عادل زكى سليمان
جامعة القاهرة
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| Agris Categories |
Animal physiology - Nutrition
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AGROVOC
TERMS |
Cholesterol.
Feed additives.
Garlic.
Immunology.
Layer chickens.
Liver.
Nigella sativa.
Physiological functions.
Trigonella foenum graecum.
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| Publication Type |
Journal
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