| Titles |
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English :
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Reproductive performance of Farafra ewes in the subtropics
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| Abstract |
The present study was carried out to assess the reproductive performance of Farafra ewes-a breed with potential economic importance in the subtropics A total of 262 ewes were categorized according to age, parity, and postpartum interval. Ewes were introduced for breeding in fall, winter and late spring seasons. Fertility, prolificacy, lamb birth weight, and ultrasonic fetal parameters were recorded. Results obtained showed that litter size was increased with age and parity. Lamb birth weight was affected by season.
None of the parameters studied had a clear-cut effect on fertility.
However, an interaction between season and parity was detected.
Measurement of fetal size in the first half of gestation did not predict birth weight. The obtained data represents the first record of the reproductive performance of Farafra ewes in the subtropics, which could be used to anticipate their performance in different seasons.
2008 Elsevier B.V. All rights reserved.
Keywords: Sheep Subtropics Reproductive performance Fetal growth.
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| Publication year |
2009
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| Pages |
356-361
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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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| serial title |
Animal Reproduction Science
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| ISSN |
0378-4320
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| Author(s) from ARC |
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| External authors (outside ARC) |
احمد مصطفى على
طب بيطرى- جامعة اسيوط
ديرار رفعت
طب بيطرى- جامعة اسيوط
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| Agris Categories |
Animal physiology - Nutrition
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AGROVOC
TERMS |
Ewes.
Reproductive performance.
Sheep.
Subtropical zones.
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| Proposed Agrovoc |
Fetal growth;
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| Publication Type |
Journal
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