Do you want to publish a course? Click here

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

2058   3   18   0 ( 0 )
 Publication date 2014
  fields Animal Production
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

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
rate research

Read More

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.
This study was conducted at Kharabo dairy station belongs to the Faculty of Agriculture، University of Damascus. 692 productive records for 269 Holstein Friesian cattle were used to study the effects of calving year, age at first calving، calving season and parity on the adjusted 305-day milk yield. Data were exposed to GLM, analysis of variance was applied to determine the effect of studied factors and differences between averages were compared according to Duncan test using SPPS 17. The overall mean for (305-d milk) was 6222.6 ± 62.01 kg. and affected significantly (P < 0.001) by calving year and parity and (P<0.05) by age at first calving. No significant effect for season was observed. Results suggested that better management practices and improving the feeding status might help increasing the 305-d milk and making the status more economic efficient in the dairy cattle at Kharabo Farm.
This study was conducted at Kharabo Dairy Station belongs to the Faculty of agriculture, University of Damascus. 553 records for 206 Holstein Friesian cattle were used to study factors affecting the calving interval during 1982 to 2007. Data were exposed eccording to GLM, and analysis of variance was used to determine the calving interval (CI) and the effect of calving year, calving season, parity and interactions on the calving interval, and Duncan test was used to compare means by SPSS program. The overall mean for (CI) was 459.12±4.90 days. and affected significantly (0.001>P) by calving year, but there was no significant effect for calving season, parity and interactions between studied factors on the calving interval. These results suggested that better management, and applaying more efficient administration practices as well as to improving the feeding status may reduce calving interval to typical period of 365 days and increase reproductive and economic efficiency of dairy cattle at Kharabo station.
This study has been conducted on Syrian coastal area in 2013 season, aimed to determines affecting factors on honey supply at that level Apiary and measure the price supply elasticity . A field questioner was applied to obtain elementary data of a random sample consisted of (304) of Apiary. The honey production has been estimated to (10.3) kg/hive and (603.8) kg/ apiary in the study sample, (89.6%) of which were marketed, while the other part has been selfconsumed at the apiary level. The marketing quantities of honey distributed between five major marketing canals, the most important one was the direct selling to the consumers, contributed to (77.1%) of total sample’ marketed quantities, followed by the selling to wholesalers with contribution ratio estimated to (18.7%), while the selling to retailer types (Honey specialized shops, Pharmacies, Grocers) have absorbed the remained small honey quantities. The supply price elasticity was estimated to (2.318), referring relatively to a high elasticity supply. The more diversified marketing channels of honey at apiaries level has positively affected supply quantities, especially when selling to wholesalers. Moreover, the existence of selling and storing unites in apiaries in addition to the market information system would also affect positively on supply quantities. The positively effect of apiary size reflects the weak position of small size apiaries in supply controlling. The more important result, was the negative impact of expertize and specialization and education of producers on honey supplied quantities at apiaries level, Remunerating Precarious conditions of current honey market, pressing on producers belonging to the qualified category and indicates high risks of shrinking their leverage in honey sub-sector.
This research was conducted I during 2009-2010 at Dier Alhajar station, General Commission for Scientific Agricultural Research to determine the length of calving interval (CI) and the effect of sire, calving year, calving season, parity and age o f cow and their interactions in Shami Cattle. It was concluded that CI can be reduced by better management and providing good and suitable feeding conditions.

suggested questions

comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا