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English :
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Effects of supplementing laying hens diets with organic selenium on fertility, hatchability, egg chemical composition and selenium concentration during storage
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Arabic :
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تأثير اضافة السلينيوم العضوى في علائق الدجاج البياض على الخصب و الفقس و التحليل الكيميائى و تركيز السلينيوم في البيضة اثناء التخزين
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| Abstract |
A total number of 498 (450 hens and 48 cocks) birds of Golden Montazah (GM) and Fayoumi (F) strains at 42 wks of age were used to evaluate the effects of two dietary levels of Se as Sel-Plex (0.1 or 0.2 mg/Kg diet) on fertility, hatchability and Se concentration in egg yolk during storage. Equal number from each strain were divided randomly into 3 equal treatment groups of 83 birds each (75 laying hens and 8 cocks each). Birds were placed in 6 floor layer pens (three for each strain), the 1st group was fed the basal diet, while the 2nd and 3rd groups were fed the same diet but supplemented with one of the two levels (0.1 or 0.2 mg/Kg diet) of selenium (Se) as Sel-Plex. The experimental period lasted for 23 weeks (from 42 to 65 wks of age). At regular intervals after collection (50 at zero (not stored); 50 at seven; 50 at 14 and 50 at 21d) the fertility and hatchability of 200 eggs per treatment was determined. Results showed that:
. Fayoumi hens had higher fertility and hatchability%. Hens fed control diet had higher fertility and abnormal chicks%, while, those fed diet containing 200 mg Se/ton diet as Sel-Plex had higher hatchability%. As the period of storage eggs increased, fertility and hatchability% decreased significantly. As the age of hens increased, fertility, hatchability and abnormal chicks% decreased significantly.
. The strain by period of storage interaction was significant for the fertility, hatchability, embryonic mortality at seven d and abnormal chicks%. Eggs from hens fed diet containing 200 mg Se/ton diet as Sel-Plex at zero d of storage had higher fertility and hatchability. Eggs from hens fed diet containing 100 mg Se/ton diet as Sel-Plex at 21d of storage had lower fertility, while, eggs from hens fed diet containing any level of Sel-Plex at 21d of storage had lower hatchability.
. At 51 wk-old birds, eggs storied for seven or 14 d were of higher fertility than those stored for 21d, while, at 65 wk-old birds, fertility and hatchability decreased with increasing storage periods from zero to 21d.
. Regardless of the strain, period of storage and age of hen had significant negative correlation with fertility, hatchability% and positive correlation with embryonic mortality at seven d.
. Ash, NFE in the eggs and Se concentration in the yolk increased significantly with increasing level of Se addition.
. Eggs storied for seven d had higher ash and NFE and eggs storied for zero d had higher moisture and protein, while, eggs storied for 14 d had higher fat. Se concentration in the yolk increased significantly with increasing period of storage. Eggs from F.
. Golden Montazah and Fayoumi laying hens on diets containing Se as hens at 21 d of storage had higher protein and Se concentration in the yolk. and eggs from F hens at 14 d of storage had higher NFE%. Eggs from GM hens at seven, 14 and 21 d of storage had higher ash%, fat% and moisture, respectively.
. Eggs from hens fed control diet at zero and 21d of storage had higher protein and fat%, respectively. Eggs from hens fed diet containing 100 mg Selton diet at zero and 21d of storage had higher ash% and moisture%, respectively, while, eggs from hens fed diet containing 200mg Se/ton diet at 21 d of storage had higher NFE% and Se concentration in the yolk.
. Regardless of the strain, level of Se addition had significant positive correlation with Se concentration in the yolk. Period of storage had significant positive correlation with fat%, Se concentration in the yolk and negative correlation with ash%.
In conclusion, Feeding Sel-Plex (200 mg Se/ton) improved fertility, hatchability and increasing the Se content of eggs.
Keywords: Selenium as Sel-Plex, laying hen, fertility, hatchability, Golden Montazah, Fayoumi, storage period.
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| Publication year |
2011
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| Pages |
1-17
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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 |
Animal Production Research Institute (APRI)
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| serial title |
Egyptian Journal Nutrition and Feeds
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| ISSN |
1110-6360
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| Author(s) from ARC |
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| Agris Categories |
Animal physiology - Reproduction
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AGROVOC
TERMS |
Diet.
Egg hatchability.
Fertility.
Layer chickens.
Organic compounds.
Selenium.
Storage.
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| Proposed Agrovoc |
Selenium as Sel-Plex;Golden Montazah;Fayoumi;
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| Publication Type |
Journal
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