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English :
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Effect of dietary supplementation of copper sulfate on productive performance of Pekin ducks:2- laying performance and hatchability traits
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Arabic :
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تأثير اضافة كبريتات النحاس على الاداء الانتاجى في بط البكينى 2- اداء انتاج البيض و صفات التفريخ
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| Abstract |
A total number of 168 Pekin ducks 14 weeks-old were selected, weighed, and divided into four treatments of 3 replicates to investigate the effect of supplementing copper sulfate as a growth promoter levels of 0, 100, 300 and 500 mg / kg diet from 14 weeks until 45 weeks of age on laying performance parameters, hatchability, chemical analysis as will as quality of egg, some blood constituents and economic efficiency during the studied laying period (22-45 wks).
The results indicated that copper sulfate supplementations resulted in insignificant effect on body weight change of ducks from 22 to 45 weeks of age, but the first eggs were early laid by about 6 and 13 days by feeding diets supplemented with 300 and 500 mg CuSO4/kg, respectively. Egg number, egg mass per duck and laying rate were significantly improved by approximately 13, 21 and 28% for each trait during the overall experimental period (22-45 wks) for groups fed diets supplemented with 100, 300 and 500 mg CuSO4 / kg compared to the control group, respectively. Egg weights slightly increased during the overall period (22-45 wks) due to treatments. Feed consumption per duck during overall period was significantly decreased by about 12.11 and 7.98% % for the group fed diets supplemented with 100 and 500 mg CuSO4 /kg compared the control. Feed conversion (g. feed / g. egg mass) were significantly affected due to treatments during the whole period (22-45wks), improvements values reached 28.9,22.8 and 17.0 %for the groups fed diets supplemented with 500, 100 and 300 mg CuSO4/kg compared to the control, respectively. Hatchability of fertile eggs was significantly improved by 7.27, 3.56 and 2.07 %. Late embryonic mortality percentages decreased by about 35.4, 23.7 and 18.0 % for the groups fed diets supplemented with 500, 300 and l00 mg Cu SO4 / kg compared to the control, respectively. Early embryonic mortality was significantly decreased by about 32 % for the group fed diet supplemented with 500 mg Cu SO4/ kg compared to the control and other treatments .Blood serum constituents such as serum triglycerides , cholesterol, HDL cholesterol and serum transaminases (GOT and GPT) were insignificantly decreased by the treatments. Egg components and quality measurements were not significantly affected at 28 and 40 wks of age, while, dry matter and ether extract composition of egg were significantly decreased by about 6.91 and 20.95 % by feeding diet supplemented with 500 mg Cu SO4 /kg compared to the control, respectively. The treatments resulted in clear improvement of net return per duck and economic efficiency. These results indicated that copper sulfate could be supplemented to grower and layer duck diets up to 500 mg / kg without any adverse effects and may be alternative methods to maximize the productivity and profitability of Pekin ducks on laying performance, hatchability traits and economic efficiency.
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| Publication year |
2008
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| Pages |
49-68
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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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| City |
الاسكندرية
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| serial title |
Egyptian Poultry Science Journal
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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 |
Alanine aminotransferase.
Aspartate aminotransferase.
Blood composition.
Chemical composition.
Cholesterol.
Ducks.
Economic analysis.
Egg hatchability.
Feed conversion efficiency.
Performance testing.
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| Proposed Agrovoc |
growth promoter;egg quality;laying period;copper sulfate;first eggs;Egg number;Egg mass;
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| Publication Type |
Journal
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