| Titles |
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English :
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Response of Ossimi sheep to dehydration or/ and starvation for different periods under summer conditions of Egypt
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Arabic :
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استجابة الاغنام الاوسيمى للتعطيش او التجويع مع التعطيش لفترات مختلفة تحت ظروف الصيف في مصر
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| Abstract |
Seven Ossimi rams were used in this study to evaluate their responses to dehydration or/and starvation for one, two or three days, and their reactions to refeeding after each deprivation period (4 days) during summer season. Changes in live body weight, water and feed intake and body temperatures were determined during all deprivation and refeeding periods. Results indicated that dehydration of animals for one (WD1), two (WD2) and three (WD3) days or/and starvation for one (WFD1), two (WFD2) and three (WFD3) days significantly (P<0.05) reduced the body weight by about 8, 11,20,11,16 and 18%, respectively. Most weight loss significantly (P<0.05) occurred on the 1st day of each deprivation period, being almost significantly (P<0.05) higher during dehydration and starvation than during dehydration only.
Increasing deprivation periods markedly decreased feed intake during the 2nd day of WD2 (59%) and WD3 (67%), while the animals stopped their feed intake during the 3rd day of WD3. During the 1st day of refeeding periods, most of the animals (71-100%) firstly drank more amount of water in one drinking during the first minutes of refeeding, being the highest after WD3 (9.7 liters) showing the highest drinking time (2.3 minutes) and the lowest amount of water per unit time (4.3 liters/min). The opposite was observed in animals after WFD1 (3.2 liters, 0.57 min and 5.6 liters/min, respectively). Dehydrated animals regained their weight loss during the 151 day of refeeding (106-109% of the original weight), while, those exposed to water and feed deprivation failed to restore their weight loss during the 151 day of refeeding (82-85% of the original weight), but they regained their weight loss on the 3rd day for WFD1 (103%) and the 41 day for WFD2 (104%) and WFD3 (100%). Dehydration or/and starvation for different periods resulted in significant increase in rectal temperature (RT) and skin temperature (ST) of all animals. During WD1 and WD2, animals showed significantly the highest increase in RT (2.5 and 2.2%, respectively) and the lowest increase in ST (1.5 and 1.6%, respectively), as compared to the other deprivation periods, which did not differ significantly.
The present study may indicate that the native Ossimi sheep show adaptability to hot environmental conditions and have the ability to withstand water or/and feed shortage. This lead to a possibility of raising Ossimi sheep in the newly -reclaimed areas in Egypt.
Keywords: Ossimi sheep, dehydration, starvation, weight loss, body temperature
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| Publication year |
2002
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| Pages |
959-970
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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 |
Rabbit, Turkey and Water Fowl Research Department
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| City |
المنصورة
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| serial title |
Journal Agricultural Science Mansoura University
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| Author(s) from ARC |
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| External authors (outside ARC) |
عبد الخالق السيد عبد الخالق(المؤلف الأول )
محمد بدر الدين ابو العلا(المؤلف الثالث )
مصطفى عبد الحليم الحرايرى(المؤلف الرابع )
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| Agris Categories |
Animal physiology - Nutrition
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AGROVOC
TERMS |
Body temperature.
Dehydration.
Egypt.
Sheep.
Starvation.
Summer.
Weight losses.
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| Publication Type |
Journal
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