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Studies on the effect of different dietary metabolizable energy levels on some performance of local baladi pigeons
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Abstract: An experiment was conducted to evaluate the effect of feeding different dietary metabolizable energy (ME) levels on some productive performance of Local Baladi Pigeons under the Egyptian conditions. A total number of 84 pairs of adult pigeons (24 months old) were used. Parents were divided into 4 experimental groups of 21 pair each within 3 replicates according to matting systems (sex ratio of pigeons1: 1). The dietary energy levels were 2600. 2800. 3000 and 3200 ME Kcal/kg diet. The diets were isonitrogenous (14 % crude protein). Diets were formulated in pellets form and with vitamin and mineral premix. The birds were acclimatizing to consume this form of diet for several days before starting the experiment. Birds were maintained on a 14 hours of lighting regimen along the experimental period. Feed and water were given ad libitum along the experiment. All birds were numbered with special aluminum ring in their legs to distinguish each pair alone. The experiment lasted. 180 days included 4 reproductive cycles (each in 45 days).
Results obtained are summarized as follows:
1- Final body weight, differences in weight, total egg number per treatment and total egg number per pair were not significantly (P<0.05) affected when dietary ME levels increased. While, egg weight, fertility and hatchability percentages were significantly (P<0.05) increased as the level of energy increased from 2600 to 3200 ME Kcal /kg of diet. However, infertileeggs, dead embryos in egg and broken eggs numerically decreased as ME levels increased. The average values of incubation period was 18 days for all groups.
2- Data indicated that feed intake, protein intake and. metabolizable energy intake significantly (P<0.05) decreased by the increase of dietary ME levels.
3- The results showed that number of squabs per treatment, number of alive squabs per pair in entire period and livability percentage were significantly (P<0.05) increased as dietary energy levels increased from 2600 to 3200 ME Kcal/kg of diet. However, Growth rate of squabs was not significantly affected at hatch and at 3 days of age, while at 7,15, 21 and 28 days of age, growth rate significantly (p<0.05) increased when dietary energy levels increased from 2600 to 3200( ME Kcall kg diet).
4-Percentages of Moisture, dry matter crude protein, ash and nitrogen free extracts (NFE) of squabs flesh at 28 days of age were not significantly affected by the increase of ME levels in the diet. While, ether extract (EE) percentage and gross energy (GE) Kcal/g of flesh significantly (P<0.05) increased as dietary ME levels increased.
5-Increasing energy levels in the diet of pigeons had no effect on crop milk component, with exception of lipid percentage, since it significantly (P<0.05) increased as the dietary ME levels increased. Chemical analysis showed that crop milk did not contain carbohydrate.
6-Carcass characteristics of squabs at 28 days of age were not significantly affected by increasing ME levels with the exception of blood and neck weight percentages, since they were increased as the level of dietary ME increased.
7-Conceming blood plasma parameters, total lipids, triglycerides, cholesterol, high density lipoprotein (HDL) and low density lipoprotein (LDL) of adult pigeons were significantly (p<0.05) increased when ME levels increased.
In general, it can be concluded that highest energy levels of pigeons (3200 Kca1 ME/kg) was the best as compared with other energy levels (2600, 2800 and 3000 Kca1 ME/kg).
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| Publication year |
2007
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| Pages |
595-611
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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 of Poultry Science
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| ISSN |
1110-5623
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| Author(s) from ARC |
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| External authors (outside ARC) |
عبد العظيم فهمى عبد العظيم
جامعة الازهر
عبد الرفيع احمد الشافعى
جامعة الازهر
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| Agris Categories |
Animal physiology - Nutrition
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AGROVOC
TERMS |
Egg hatchability.
Energy value.
Fertility.
Pigeons.
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| Proposed Agrovoc |
productive performance;Egyptian condition;
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| Publication Type |
Journal
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