| Titles |
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English :
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Effect of postpartium mating on reproductive and productive efficiency of doe rabbits
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Arabic :
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تأثير فاصل اعادة التلقيح على الاداء التناسلى و الانتاجى في اناث الارانب
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| Abstract |
A total number of 30 does and 6 bucks of mature New Zealand White (NZW) rabbits were used in the present study. Does were divided according to postpartum interval of mating (next to the first parity) into three groups, each of 10 does. Does in group l (Gl) were remated through the day following parturition as an intensive production, does in group 2 (G2) were remated at the day 14th of postpartum as a semi-intensive production and does in group 3 (G3) were remated at the day 30th of post partum (after weaning) as an extensive production.
Reproductive performance and productive efficiency of NZW females were studied in the next three consecutive parities (2nd, 3nd and 4th) denoted as 1,2,3 experimental parities for each group. The highest conception rate (CR) was obtained in does mated at 30 days postpartum (G3), followed by the does mated at 1 and 14 days postpartum, respectively.
The average litter size and weight at birth (LSB, LWB) in does mated at the 14 days postpartum were higher than in does mated at the 1st day and at the 30th day postpartum. The average litter size at weaning (LSW) in G2 was higher than in G1 and G3, respectively. The average litter weight at weaning (LWW) in G2 was higher than in G3 and G1 respectively. The differences between groups in LSB, LWB, LSW and LWW due to remating interval were significant. Litter size and weight at 8 weeks of age were higher in G2 than other groups. However, the highest mortality rate from 4 to 8 weeks of age was recorded in G2.
The greatest number of corpora lutea was found in females mated at 30 days postpartum. The highest number of live fetuses and rate of embryonic viability was recorded in females mated through I day after parturition.
Keywords: Rabbit, Remating interval, Reproductive and productive efficiency.
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| Publication year |
2005
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| Pages |
727-736
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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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| Country |
Egypt
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| City |
Sakha
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| serial title |
Proceeding 2nd Conferance Animal Production Research Institute Sakha 27-29 September
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| Department |
Rabbit, Turkey and Water Fowl Research Department
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| Author(s) from ARC |
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| External authors (outside ARC) |
نجوى عبد الهادى احمد
جامعة القاهرة
محمد محمود الشافعى
جامعة القاهرة
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| Agris Categories |
Animal physiology - Reproduction
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AGROVOC
TERMS |
Mate.
Production.
Rabbits.
Reproductive performance.
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| Proposed Agrovoc |
Remating interval;
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| Publication Type |
Conference/Workshop
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