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Studying the Factors Affecting Days Open of Holstein Cattle in Syria Coast Conditions

دراسة العوامل المؤثرة في طول فترة الراحة عند أبقار الهولشتاين في ظروف الساحل السوري

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 Publication date 2014
  fields Animal Production
and research's language is العربية
 Created by Shamra Editor




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This study was conducted at fedio dairy station belongs to the General organization for cattle in Lattakia.. A total of 2534 production records of 1771 Holstein cattle were used to study factors affecting the Days open (DO) during 1990 to 2013, and to study the effects of calving year, calving season, parity and interactions between studied factors on this trait. Data were analyzed by the Least Square Means, and Duncan test was used to compare means by SAS 9 program. The overall mean for Days Open (DO) was 150.23 ± 1.44 days. and affected significantly (P< .0..1) by calving year, calving season, parity and interaction (calving year × calving season), (calving year × calving season) and (P<.0.5 ) by interaction (calving year × calving season × parity) on the Days Open, but there was no significant effect for interaction (calving year × parity). Results suggested that better management, and improving the feeding status may reduce Days Open to typical period (60 - 90 days), reduce interval calving, to get calf every year, and increase reproductive and economic efficiency of dairy cattle at fedio station.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة التي أجريت في محطة أبقار فديو التابعة للمؤسسة العامة للمباقر في محافظة اللاذقية، تأثير العوامل المختلفة على طول فترة الراحة عند أبقار الهولشتاين في ظروف الساحل السوري. تم تحليل 4352 سجلاً إنتاجياً لـ 1671 بقرة هولشتاين خلال الفترة من 1990 إلى 2013. استخدمت الدراسة طريقة متوسط أدنى المربعات واختبار Duncan لمقارنة المتوسطات باستخدام برنامج SAS 9. أظهرت النتائج أن المتوسط العام لطول فترة الراحة كان 150.23 يوماً، مع وجود تأثير معنوي لسنة الولادة، فصل الولادة، موسم الإنتاج، والتداخلات بينها. أوضحت النتائج أن تحسين الإدارة وتوفير تغذية جيدة يمكن أن يقلل من طول فترة الراحة إلى الحدود المثالية (60-90 يوماً)، مما يزيد من الكفاءة التناسلية والاقتصادية للمحطة.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لأنها تسلط الضوء على العوامل المؤثرة في طول فترة الراحة عند أبقار الهولشتاين، مما يساعد في تحسين الكفاءة التناسلية والاقتصادية. ومع ذلك، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تضمنت تحليلاً أعمق للعوامل البيئية والإدارية الأخرى التي قد تؤثر على طول فترة الراحة. كما أن الدراسة تعتمد بشكل كبير على البيانات التاريخية، مما قد يؤثر على دقة النتائج في الظروف الحالية. بالإضافة إلى ذلك، كان من الممكن أن تكون الدراسة أكثر قوة إذا تم تضمين مقارنة مع مزارع أخرى في مناطق مختلفة لتحديد تأثير العوامل الجغرافية بشكل أدق.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو تحليل العوامل المؤثرة في طول فترة الراحة عند أبقار الهولشتاين في ظروف الساحل السوري وتحديد تأثير سنة الولادة، فصل الولادة، موسم الإنتاج، والتداخلات بينها على هذا المؤشر التناسلي.

  2. ما هي الطريقة الإحصائية المستخدمة في تحليل البيانات؟

    تم استخدام طريقة متوسط أدنى المربعات واختبار Duncan لمقارنة المتوسطات باستخدام برنامج SAS 9.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    توصلت الدراسة إلى أن المتوسط العام لطول فترة الراحة كان 150.23 يوماً، مع وجود تأثير معنوي لسنة الولادة، فصل الولادة، موسم الإنتاج، والتداخلات بينها. وأوضحت النتائج أن تحسين الإدارة وتوفير تغذية جيدة يمكن أن يقلل من طول فترة الراحة إلى الحدود المثالية (60-90 يوماً).

  4. ما هي التوصيات التي قدمتها الدراسة لتحسين الكفاءة التناسلية؟

    أوصت الدراسة بتحسين نظم الرعاية، والأساليب الإدارية، والتغذية لتقليل طول فترة الراحة، مما قد ينعكس إيجاباً على الكفاءة التناسلية والاقتصادية للمحطة.


References used
Ajili, N ; Rekik, B ; Ben Gara, A. and Bouraoui, R, Relationships among milk production, reproductive traits, and herd life for Tunisian Holstein-Friesian cows. African Journal of Agricultural Research. Vol. 2, N.2, 2007, 047-051
Amin, M. R ; Habib M.A. and A.K.F.H. Bhuiyan. 2013. Reproductive potential of Red chittagong cattle in Bangladesh. journal of tropical resources and sustainable science. Vol. 1,N. 1, 2013, 71-86
Beever, D. E. The impact of controlled nutrition during the dry period on dairy cow health, fertility and performance. Animal Reproduction Science. Vol.96, N. (3-4), 2006, 212-226
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