| Titles |
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English :
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Productive and genetical studies on ducks.
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Arabic :
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دراسات انتاجية ووراثية على البط.
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| Abstract |
This experimental work was carried out at EI-Serw Research Station for Waterfowls, Animal Production Research Institute, Agriculture Research Center. The experiment was extended from March (2003) to January (2005).
A total number of 200 parent ducks and 600 day-old offspring from both Khaki-Campbell (foreign) and Domyati (local) breeds were used to evaluate some productive and reproductive traits under the Egyptian environmental conditions. A number of 20 drakes and 80 females at 12 weeks old from each breed were divided randomly into 20 pens. Pedigree eggs were collected and hatched. Day-old- ducklings were pedigreed and used as the offspring of next-generation. A total number of 300 ducklings from each Khaki-Campbell and Domyati breeds were divided randomly to 3 equal groups. During the growing period, body weight, body weight gain, feed consumption, mortality rat, body measurements, carcass quality and carcass composition were determined. During the laying period egg number, egg weight, egg quality, fertility and hatchability percentage was calculated.
Also, blood constituents and immune response were determined. The results showed that: Body weight of Khaki-Campbell ducks was significantly heavier up to 20 weeks of age than Domyati ones. Khaki-Campbell birds consumed significantly 6.1% more feed during 0-12 weeks of age than Domyati ones. Feed conversion was significantly better from 0-12 weeks of age in Khaki-Campbell ducklings (3.67) than Domyati ones (4.19).
However, mortality rate during 12 weeks of age was higher in KhakiCampbell (5.0%) than Domyati (2.67%). Khaki-Campbell ducks had significantly heavier body weight at sexual maturity, laid heavier first egg and first 10 eggs and need lower days to the first 10 eggs than Domyati ones.
But Domyati ducks reached sexual maturity earlier than Khaki-Campbell ones. Khaki-Campbell ducks produced about 23 eggs (61 %) more egg number during 90 days production than Domyati ones. Both egg weight and egg mass were significantly higher in Khaki-Campbell than Domyati ducks. Khaki-Campbell eggs were increased in yolk weight, albumin weight, shell weight and albumin%. However, Domyati eggs were superior in yolk%, shell%, yolk color and haugh units. Khaki-Campbell birds consumed significantly 24.5% more feed during 90 days of laying than Domyati ones.
There were significant differences in fertility%. hatchability of fertile egg% or of egg set% between two breeds. There were significant differences in the concentration of total protein, albumin, globulin, total lipids, cholesterol, calcium, inorganic phosphores and hematocrit% between Khaki-Campbell and Domyati breeds. The primary response (at 16 weeks) and secondary ones (at 20 weeks) against SRBC's were significantly higher in Domyati (92.2 and 272.6) than in Khaki-Campbell ducks (66.1 and 241.5), respectively. This may indicate that Domyati breed had higher immunity responsiveness compared with Khaki-Campbell ducks.
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| Publication year |
2005
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| Pages |
142p.
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد - الدقى- الجيزة
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| Availability number |
645
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| Organization Name |
Animal Production Research Institute (APRI)
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| Country |
Egypt
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| Department |
Rabbit, Turkey and Water Fowl Research Department
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| Author(s) from ARC |
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| Agris Categories |
Animal husbandry
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AGROVOC
TERMS |
Ducks.
Genetics.
Haematocrit.
Immunity.
Production.
Production factors.
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| Publication Type |
PhD Thesis
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