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Semen Characteristics in Growing Shami Male Goats

مواصفات السائل المنوي في ذكور الماعز الشامي النامية

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 Publication date 2003
and research's language is العربية
 Created by Shamra Editor




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This Study was carried-out at Shami Goat Improvement Station in Karahta. Ten growing Shami male goats, aged 8 months, housed and managed under the same conditions were used to study the semen characteristics. Artificial vagina was used to collect semen at weekly intervals, for 13 months to determine the volume, motility, pH, and sperm concentration using Neubaure- Spectrophotometer and Spermiodensimeter techniques. Overall averages and standard errors of volume, motility, concentration, and pH were 0.9 ± 0.07 ml, 65.24 ± 1.41%, 3.57 ± 0.14 billion/ml, and 6.52 ± 0.07, respectively. Seasonal variations were observed. A positive significant correlation between volume and motility (r= 0.42, P<0.01) was found, while negative correlations (P<0.01) between pH and other studied semen characteristics were recorded. Linear equations for detecting sperm concentration as measured by either, Spermiodensimeter or Spectrophotometer were obtained.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة خصائص السائل المنوي في ذكور الماعز الشامي النامية. أجريت الدراسة في محطة تحسين الماعز الشامي في كراحتا، حيث تم استخدام عشرة ذكور ماعز شامي بعمر 8 أشهر، وتم جمع السائل المنوي باستخدام المهبل الصناعي على فترات أسبوعية لمدة 13 شهرًا. تم قياس حجم السائل المنوي، وحركته، ودرجة الحموضة، وتركيز الحيوانات المنوية باستخدام تقنيات النيوباور-سبكتروفوتومتر وسبيرميدنسيميتر. كانت المتوسطات العامة والأخطاء المعيارية لحجم السائل المنوي، وحركته، وتركيزه، ودرجة الحموضة هي 0.9 ± 0.07 مل، 65.24 ± 1.41%، 3.57 ± 0.14 مليار/مل، و6.52 ± 0.07 على التوالي. لوحظت تغيرات موسمية، وتم العثور على ارتباط إيجابي كبير بين الحجم والحركة (r= 0.42، P<0.01)، بينما تم تسجيل ارتباطات سلبية (P<0.01) بين درجة الحموضة والخصائص الأخرى المدروسة للسائل المنوي. تم الحصول على معادلات خطية لاكتشاف تركيز الحيوانات المنوية كما تم قياسها بواسطة سبيرميدنسيميتر أو سبكتروفوتومتر.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لفهم خصائص السائل المنوي في ذكور الماعز الشامي النامية، خاصة في ظل الظروف البيئية والموسمية المختلفة. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن توسيع العينة لتشمل عددًا أكبر من الحيوانات لضمان دقة النتائج. ثانيًا، لم يتم التطرق إلى العوامل البيئية الأخرى التي قد تؤثر على خصائص السائل المنوي مثل التغذية والعوامل الوراثية. أخيرًا، كان من الممكن تضمين تحليل مقارن مع سلالات أخرى من الماعز لتحسين فهم الفروق بين السلالات المختلفة.
Questions related to the research
  1. ما هي الأدوات المستخدمة لجمع السائل المنوي في الدراسة؟

    تم استخدام المهبل الصناعي لجمع السائل المنوي من ذكور الماعز الشامي.

  2. ما هي الخصائص التي تم قياسها للسائل المنوي؟

    تم قياس حجم السائل المنوي، وحركته، ودرجة الحموضة، وتركيز الحيوانات المنوية.

  3. ما هو الارتباط الذي تم العثور عليه بين حجم السائل المنوي وحركته؟

    تم العثور على ارتباط إيجابي كبير بين حجم السائل المنوي وحركته (r= 0.42، P<0.01).

  4. هل لوحظت تغيرات موسمية في خصائص السائل المنوي؟

    نعم، لوحظت تغيرات موسمية في خصائص السائل المنوي في ذكور الماعز الشامي.


References used
Ali, B. H., and A. I. Mustapha. 1986. Semen characteristics of Nubian goats in the Sudan. Animal Reproduction Science. 12:63-68
Almeida, G., and J. Pelletier, 1988. Abolition of seasonal testis changes in the Ile-de-France ram by short light cycles: relationship to luteinizing hormone and testosterone release. Theriogenology. 29: 681-691
Austin, J.W., R. B. Leidy, G. M. Krise, and E. W. Hupp. 1986. Normal values for semen collected from Spanish goats by two methods. Journal of Applied Physiology. 24(3):369-72
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This Study was carried-out in Karahta station for improvement of Shami goats, Directorate of Animal Production Research, Ministry of Agriculture and Agrarian Reform. Fifty growing Shami male goats aged ٣ months, were used to measure the growth rat e of testicular parameters, their relation to the development of body weight and the effect of several factors on their development from weaning at ٣ months to ٢١ months of age. All kids housed and managed under the same conditions.
This study was carried out at the Shami Goat Improvement Station at Karahta. Twenty one week old Shami male goats were used to measure the concentrations of testosterone and LH hormones in plasma over a period of 21 months, using the Enzyme Linked Immune Sorbent Assay (ELISA), in order to determine the sexual puberty age. All kids were housed and managed under the husbandry regimes applied at Karahta station.
The research was carried out in Karahta Research Station for Shami goats by using 84/head/Shami kids (122±18.65 days old and 18±3.77 kg body weight). This trial continued for a 90 day period. Its goal was to find out the possibility of reducing th e offered concentrated feed in about 40% from the regular requirements for growing and replacing it by improving the nutritive value of the offered straw when they treated with urea, molasses or both of them. The Animals divided randomly into six treatments according to the offered feed for each treatment as the follows: Untreated wheat straw (control), wheat straw treated with 20% molasses, 1% urea, 1% urea and 20% molasses, 2.5% and with 2.5% urea and 20% molasses.
This research was carried out in four different regions on the Syrian coast on four herds of Shami goats different in numbers. These were grown in different ways depending on farmers' concepts and needs, and the geographic location of each region. T he number of goats that were studied was (44). The daily average of milk production per goat was calculated, in addition to the monthly average and overall average for every herd during the lactation season which was divided into two phases (Breastfeeding, Lactation) .In the first phase it was (2493,9 – 2238,6 – 1776,6 – 81,6) L ordered by herd and method of breeding (4 – 2 – 3 – 1) and same was in the second phase. The average production rate was (54,27)% in first method of first herd and in other methods was lower than (50)% and increased in other herds (49,39 – 45,36 – 44,16)% respectively (2 –4 – 3 – 1). It was noticed that in the second phase of Lactation the herd of first method retracted to lower than (50)%and rose in other herds (55,83 – 54,63 – 50,60 – 45,72 )% Respectively (1 –2 – 4 – 3). Statistical analysis demonstrated the lack of significant differences in second and forth herd in spite of the different methods used in the other herds, and in second phase statistical analysis was in four herds in accordance with different methods of breeding.
Shami goat in Syria is one of the important domestic breeds, because of its high productivity and breeding capacity under the hard environmental conditions and it is still being used in crossbreeding with Mountain goats as a donor for milk produci ng traits. This breed is still far away from scientific investigations even it has been exposed to a random crossbreeding with Mountain goats by goat breeders. This has lead to the possibility of losing some of its genetic characteristics which are not detected yet. In this research the genetic diversity among groups of pure Shami goats was determined using ISSR-PCR on blood and results indicated that there was a molecular genetic diversity among studied goats and polymorphic rate was register to 100%.

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