Egyptian Journal of sheep & Goat Sciences Vol. 5, (1) P: 111-101 (2010) Face color effect on growth rate of Libyan Barbary lambs. Ahtash, A. ; Hermas, S. ; Azaga, I. and Kurdi, A. Abstract The Libyan Barbary sheep Dynasty marked to bear range harsh conditions such as severe lack of rain in some seasons and the high temperature and therefore its ability to improve productivity in good environmental conditions. The Libyan Barbary sheep generally have a white body color with white or black built or patches on the head and legs. This study aimed to assess the possible effect of face color on growth rate of Libyan Barbary sheep towards developing improved lines of Barbary sheep according to face color. The study included also the effect of some other factors such as year, sex, birth type and age of mother on growth characteristics. This study was carried out at Bir El Ghanem Research Station located 80 km southwest of Tripoli. The breeding system in this station extend according to range availability and presence of rain, where sheep grazed during morning and return by the end of the day. Animals fed on concentrate feed (14% protein) and barley or wheat straw pasture during the summer months. Growth rate records for lambs born during the season 2002 and 2003 were used as a base to divide according to face color. Results show the overall means of birth weight (3.66 kg) and weaning weight (31.48 kg). Statistical analysis revealed non-significant influence of face color on birth weight of lambs during all seasons, while its effect on weaning weight of lambs was significant. Lambs which was addressed to black face color had the heaviest weight. The factors year, sex and type of birth have significant effects on birth weight, weaning weight and weight before and after weaning, where differences varied from year to year. Male lambs were heavier than female lambs and single lambs was heavier than the twins. Therefore, it is worth wise to suggest using face-color as a base to select lines specialized in the production of meat. The results of this study stressed the significance of remaining non-genetic factors like sex, type and year of birth. arabic 9 English 47
Abdulkarim E. Ahtash, .Hermas A. S, Ibrahim A. Azaga, ِAbdelraof kurdi(4-2010)

The present study was conducted to figure out the effect of some mineral and biofertilizers on nutritional value of Acacia saligna seedlings. This study was carried for 14 months at the nursery of Forestry and Wood Technology Department, Faculty of Agriculture, Alexandria University-Egypt. Three commercial mineral fertilizers were used in this study: Urea, Calcium superphosphate, and Potassium sulphate as a source of nitrogen, phosphorus, and potassium (NPK). In this study, six levels of mineral fertilization treatments were used [F0-F5]. The results of this study showed that Acacia saligna seedlings treated with F2& F3 fertilizers recorded the highest value of crude protein, whereas, treatment with F2 fertilizer showed the highest value of crude fat. In addition to that, the lowest content of crude fat was found in the seedlings of Acacia saligna treated with F5 (halexbiofertilizer). Seedlings treated with F4 fertilizer showed no significant difference in content of crude protein from that treated with F5fertilizer. i.e., the crude protein and crude fat were found to respond to mineral fertilizers, whereas, crude fiber and total ash are not effected by adding fertilizers.
Abduraof Mustafa Omar Alosif(4-2021)

تم إجراء مسح مبدئ لأهم الآفات الحشرية التي تصيب السجاد والمنسوجات بمواقع مختلفة من ليبيا ودراسة تأثير درجات الحرارة والضوء والتغذية على دورة حياة خنفساء الأثاث الكبرى Anthrenus flavipes وتتبع دورة الحياة بالمعمل من شهر 5 – 2008 حتى شهر 6 – 2009.دلت نتائج المسح الأولي على وجود العديد من الآفات الحشرية على الصوف في الأماكن التي تمت زيارتها وأشتملت على ثلاثة أنواع من فصيلة Dermestidae وهي Anthrenus flavipes، piceus Attagenus، وpimpinella Anthrenus ونوعين من فصيلة Tinidae هما pellionella Tinea، وbiselliella Tineola. وقد لوحظ تواجد خنفساء الأثاث الكبرى A. flavipes في عدة مواقع مختلفة وبأعداد كبيرة مقارنة ببقية الأنواع.دلت النتائج على أن أقصر دورة حياة لخنفساء الأثاث الكبرى A. flavipes كانت قد تحققت عند درجة حرارة 32 ̊م ثم عند 28 ̊م و25 ̊م وكانت الفروق معنوية بين المتوسطات، أما ما يتعلق بتأثير ساعات الضوء والظلام فقد تبين أن أقصر دورة حياة لهذه الحشرة كانت قد تحققت عند التربية تحت 24 ساعة ظلام، ثم 18 ساعة ظلام و6 ساعات ضوء، وأن أطول دورة حياة في هذه التجربة كانت عند 6 ساعات ظلام و18 ساعة ضوء، وكانت الفروق معنوية.كما تبين من خلال نتائج دراسة تأثير الغذاء والتجويع على دورة حياة A. flavipes أن أقصر دورة حياة كانت قد تحققت عند تغذية اليرقات على صوف + خميرة + كوليستيرول كما كان لهذه المعاملة تأثيرات هامة على حياتية البالغات وخاصة على معدلات وضع البيض وكانت الفروق معنوية.وقد أشارت نتائج الدراسة المعملية على أن أكثر تواجد للبالغات كان قد سجل خلال فترات الحرارة المرتفعة من السنة والتي سجلت بها أعلى معدلات للتكاثر ووضع البيض وذلك خلال الأشهر مايو ويونيو وأغسطس. Abstract Preliminary survey was conducted to detect the most harmful insect pests of carpet, wool, fabrics, leather, and museum specimens at certain locations in Libya.Three species of family Dermestidae - Anthrenus flavipes, A. pimpinella and Attagenus piceus, in addition to Tineola biselliella and Tinea pellionella from family Tinidae were very common. The carpet beetle Anthrenus flavipes was one of the most abundant and destructive.Temperature, light, and nutrition were also tested for their effect on the length of life cycle of furniture carpet beetle Anthrenus flavipes, which was also monitored in laboratory from May 2008 to June 2009.Studies on the effect of temperature on the duration of life cycle of A. flavipes indicated that shortest life cycle duration was achieved when the insect was reared at 32 c°, followed by 28, and 25 c°.Experiments on the effect of light and dark hours of the day on life cycle of A. flavipes indicated that shortest life cycle was achieved when the insect was reared under 24 hours of darkness, then at 18 hours, and 6 hours of darkness during the day. Differences in both experiments were significant. Nutrition and starvation significantly affected life cycle duration of A. flavipes. Shortest duration was recorded when insects were fed on (wool + yeast + cholesterol); this treatment also increased the ammount of eggs laid by A. flavipes adults.Laboratory studies demonstrated that adults were most abundant during May, June, and August.
فايدة عيسى سعيد الككلى (2011)