| Titles |
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English :
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Comparative study on reducing cholesterol in layer eggs
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Arabic :
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دراسة مقارنة علي تقليل الكوليسترول في بيض الدجاج البياض
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| Abstract |
A total of 140 Bovans white (commercial egg table production) laying hens at their first laying season were used to study the effect of dietary Lactobacillus acidophilus (L) and Bifidobacterium bifidum (B) alone or combined (L+B) on blood, egg and liver cholesterol and total lipids.
At 27 weeks of age, birds were divided at random into seven equal groups. Allotted to adding L or B to the basal diet: 50 or 100 gm liquid culture of L or B or L+B/kg diet/day. Layers fed treated diets through 2.5 month then control diet for 1.5 month more.
Dietary L, L+B and B had significantly positive effect on egg production rate, egg number, egg weight, egg mass, body weight and feed conversion. L was more effective than B through treatment except body weight. There was an improvement by adding 100 than 50 gm liquid culture of L or B or L+B/kg diet/day. The positive effect of dietary L, L+B, B was depressed or disappeared, when hens switched to the basal diet. So, L or B must stay along the period of production.
Both cholesterol and total lipids were decreased in blood serum and egg yolk directly after 2 weeks of feeding diet with treatments and this trend increased gradually until the end of treatment (at 10 weeks). But after switching hens to the basal diet and removing treatments from diet, levels were returned back to the normal concentration before treatments.
The reduction when adding L, B or L+B was 58.3, 55.6 or 50.0% in serum cholesterol; 6.4, 5.2 or 5.8% in serum total lipids; 16.4, 7.0 or 12.0% in serum LDL; 18.3, 17.6 or 17.7% in yolk cholesterol; 2.5, 2.0 or 2.1 in yolk total lipids; 6.1, 4.5 or 5.5% in liver cholesterol and 21.5 ,16.2 or 18.9% in liver total lipids respectively.
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| Publication year |
2002
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| Pages |
140p.
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
795
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| Organization Name |
Animal Production Research Institute (APRI)
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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 - Nutrition
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AGROVOC
TERMS |
Bifidobacterium.
Blood composition.
Cholesterol.
Eggs.
Lactobacillus.
Layer chickens.
Liver.
Performance testing.
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| Publication Type |
PhD Thesis
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