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Evaluation of some natural feed additive in layer diets
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Abstract: The objective of this work was to study the impact of addition of natural feed additives as dinaferm (Saccharomyces Cerevisiae), biotop (Bacillus Subtilis and Bacillus Licheniform) and black seed oil versus, some antibiotics as amoxicillin and zinc bacitracin to laying hen diets on productive performance, serum components, digestibility, semen quality, fertility, hatchability and economical efficiency. A total number of 180 layer hens and 24 cockerels of local strain "Al - Salam" were fed the experimental diets from 32 to 43 weeks of age. Layer hens and cockerels were divided into 6 treatment groups in individual cages in open system. The first group were used as control (fed without any additives), while the other five groups were fed the same control diet supplemented with dinaferm, biotop, black seed oil, Amoxicillin and Zinc bacitracin at levels of 0.1, 0.1, 0.1, 0.02% and 0.05%, respectively. The results showed that, addition of different feed additives significantly (P <0.05) improved egg number (EN), egg mass (EM) and feed conversion (FC) while, insignificantly affected egg weight ( EW ) as compared to the control group. Addition of dinaferm was increased significantly (P<0.05) EN and EM than control and other treated groups. The highest values of EN and the best FC were recorded by dinaferm addition. Addition of dinaferm increased significantly (P<0.05) feed intake (F1), while, amoxicillin and zinc bacitracin addition decreased significantly (P<0.05) FI as compared to the control group. Addition of different feed additives to laying hen diets insignificantly affected on globulin, globulin /
albumin ratio and cholesterol as compared to the control group. Addition of dinaferm, amoxicillin and Zinc bacitracin increased significantly (P<0.05) total protein and albumin while, biotop and black seed oil addition insignificantly affected total protein and albumin as compared to the control group. The Addition of feed additives insignificantly affected most digestibility coefficient parameters while, amoxicillin and Zinc bacitracin
addition decreased significantly (P<0.05) digestion coefficients of dry matter (DM), organic matter (OM) and crude protein (CP) as compared to Abaza, I. M. et.Al. 892 the control group. Addition of different feed additives improved significantly (P<0.05) semen- ejaculate value, sperm – cell concentration (x106/ml.) and sperm motility % while, decreased significantly (P<0.05) dead spermatozoa and sperm abnormalities as compared to the control group. Addition of dinaferm and Zinc bacitracin improved significantly (P<0.05) fertility and hatchability percentage, as compared to control group. The best relative economical efficiency was recorded by dinaferm flowed by black seed oil addition compared to the control and other treated groups. It was concluded that natural feed additives dinaferm, biotop and black seed oil could serve in laying hens diets. However, further research is required to better understand the role of natural feed additives in poultry nutrition and their implications in human health.
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| Publication year |
2006
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| Pages |
891-909
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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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| ISSN |
1110-5623
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Antibiotics.
Bacillus subtilis.
Digestibility.
Egg hatchability.
Feed additives.
Fertility.
Layer chickens.
Nigella.
Performance testing.
Saccharomyces cerevisiae.
Semen.
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| Publication Type |
Journal
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