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Factors affecting number of services per conception of Holstein cattle in Syrian coast

العوامل المؤثرة في عدد التلقيحات اللازمة للإخصاب الواحد عند بقر الهولشتاين في الساحل السوري

2093   3   18   0 ( 0 )
 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 using 2189 records for 790 Holstein cattle to study the effect of frozen–thawed bull semen, inseminator, calving year (CY), calving season (CS) and parity (P) on the number of services per conception (S/C). Data were obtained between the period 2003 and 2013 and evaluated according to GLM procedure (SAS 9). Analysis of variance was used to determine the effect of studied factors on S/C.


Artificial intelligence review:
Research summary
أجريت هذه الدراسة في مزرعة فديو باستخدام 2189 سجلاً خاصاً بـ 790 بقرة هولشتاين، جُمعت خلال الفترة الممتدة من عام 2003 وحتى عام 2013 لدراسة تأثير عدة عوامل على عدد التلقيحات اللازمة للإخصاب الواحد. شملت العوامل المدروسة ثور التلقيح، الشخص الملقح، سنة الولادة، فصل الولادة، وموسم الإنتاج. استخدم الباحثون النموذج الخطي العام (GLM) وتحليل التباين لدراسة التأثيرات المختلفة، واستخدم اختبار Duncan لمقارنة المتوسطات باستخدام برنامج SAS 9. أظهرت النتائج أن المتوسط العام لعدد التلقيحات اللازمة للإخصاب الواحد بلغ 2.61 ± 0.04 تلقيحة. تبين وجود تأثير معنوي لثور التلقيح والشخص الملقح، بينما لم يكن هناك تأثير معنوي لسنة الولادة، فصل الولادة، أو موسم الإنتاج. خلصت الدراسة إلى أن الدقة في كشف الشبق، التلقيح في الوقت المناسب، وكفاءة الملقح، واستخدام سائل منوي من ثيران عالية الخصوبة يمكن أن يزيد من نسبة الإخصاب ويقلل من عدد التلقيحات اللازمة للإخصاب الواحد.
Critical review
دراسة نقدية: تقدم الدراسة معلومات قيمة حول العوامل المؤثرة في عدد التلقيحات اللازمة للإخصاب الواحد عند بقر الهولشتاين في الساحل السوري. ومع ذلك، يمكن تحسين الدراسة من خلال تضمين المزيد من البيانات حول الظروف البيئية والإدارية التي قد تؤثر على النتائج. كما أن الدراسة لم تتناول بشكل كاف تأثير التغذية والعوامل الصحية على عدد التلقيحات. يمكن أن تكون هناك حاجة لمزيد من الأبحاث لتحديد تأثير هذه العوامل بشكل أكثر دقة. بالإضافة إلى ذلك، يمكن أن تكون هناك حاجة لمقارنة النتائج مع دراسات أخرى في مناطق مختلفة لتحسين فهم العوامل المؤثرة بشكل شامل.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو دراسة تأثير عدة عوامل مثل ثور التلقيح، الشخص الملقح، سنة الولادة، فصل الولادة، وموسم الإنتاج على عدد التلقيحات اللازمة للإخصاب الواحد عند بقر الهولشتاين في مزرعة فديو في الساحل السوري.

  2. ما هي العوامل التي تبين أن لها تأثير معنوي على عدد التلقيحات اللازمة للإخصاب الواحد؟

    تبين أن لثور التلقيح والشخص الملقح تأثير معنوي على عدد التلقيحات اللازمة للإخصاب الواحد، بينما لم يكن هناك تأثير معنوي لسنة الولادة، فصل الولادة، أو موسم الإنتاج.

  3. ما هو المتوسط العام لعدد التلقيحات اللازمة للإخصاب الواحد وفقاً للدراسة؟

    المتوسط العام لعدد التلقيحات اللازمة للإخصاب الواحد وفقاً للدراسة هو 2.61 ± 0.04 تلقيحة.

  4. ما هي التوصيات التي خلصت إليها الدراسة لتحسين نسبة الإخصاب وتقليل عدد التلقيحات؟

    توصي الدراسة بتحسين الدقة في كشف الشبق، التلقيح في الوقت المناسب، زيادة كفاءة الملقح، واستخدام سائل منوي من ثيران عالية الخصوبة لتحسين نسبة الإخصاب وتقليل عدد التلقيحات اللازمة للإخصاب الواحد.


References used
Al-Hassan, M. J. 2003. Assessment of the reproductive performance of a Holstein dairy herd as affected by the efficiency of the inseminator .J. King Saud. Univ. 15.Agric.Sci., 2:79-88
Beever, D. E. 2006. The impact of controlled nutrition during the dry period on dairy cow health, fertility and performance. Animal Reproduction Science. 96 (3-4): 212-226
Berry, D. P., J. F. Kearney, K. Twomey and R. D. Evans. 2013. Genetics of reproductive performance in seasonal calving dairy cattle production systems. Irish, J. Agric.Food Res., 52: 116
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