Egyptian Association for Sheep and GoatsEgyptian Journal of Sheep and Goats Sciences2090-038614220190801Effect of supplementation with different types of selenium on lactation performance and some blood parameters of Farafra and Saidi ewes and performance of their lambs.19305666010.21608/ejsgs.2019.56660ENFatma E.SabaSheep and Goats Research Dept., Animal Production Research Institute, Giza, Egypt.A. A.K.SalehSheep and Goats Research Dept., Animal Production Research Institute, Giza, Egypt.A. A.Al MoafyVeterinary Service Department, Animal Production Research Institute, Dokki, Giza . Egypt.Journal Article20191103The aim of this study was to evaluate the effect of dietary selenium supplementation (organic or inorganic) to the diet of late pregnant and lactating ewes on their productive and growth performance of their suckling lambs. Sixty late pregnant ewes (30 Farafra and 30 Saidi) had age ranged from 2 - 4 years and of average weight 45.0 ± 1.4 kg for Farafra and 43.12 for Saidi ewes were used in this study. All ewes were chosen fertile and healthy, with single born lamb with every breeding and free of internal and external parasites. Ewes of every breed were divided into three similar groups (10 ewes each). All ewes fed in groups according to NRC (1985). The control group fed the basal ration + 100 gm starch powder without any supplement, while the tested group (T1) fed 0.3 mg Sodium Selinate/kg diet and the tested group (T2) fed the basal ration + 0.3 mg Selenium yeast /kg diet. Results indicated that milk yield was the highest with T2 (590 and 564 kg) followed by T1 (583 and 551 kg) and lastly the control (545 and 502 kg) for both breeds (Farafra and Saidi, respectively), the differences were significant only between Se-yeast ration (T2) and the control one. The improvement of milk yield was better with Saidi (9.76 and 12.35%) compared with Farafra ewes (6.97 and 8.26%) for the two tested treatments (T1 and T2, respectively). Milk contents of fat and total solid were slightly increased with the two tested rations in comparison with the control one, while protein content was significantly higher only with T2. compared with control ration. Body weight at birth and weaning was improved with the tested rations. The significance of improvement was associated only with T2 for weaning weight of Farafra ewes, in comparison with control ration. The daily gain and total gain measured for suckling lambs had the same trends of birth weaning weight among the dietary treatments. Also, the obtained data indicated that weaning weight, daily body gain (DBG) and total body gain (TBG) were significantly higher with Farafra than those of Saidi lambs with both treatments (T1 and T2). Hematocrit (Ht%), Sodium and Potassium levels did not significantly effected by the tested experimental rations. The highest value of total protein in Saidi ewes recorded with T2 (6.23 g/d) followed by T1 (6.06 g/d) and lastly the control (5.78g/d) but the differences were not significant. Also, similar trend respecting total protein was observed among the dietary treatment with Farafra ewes, but the difference was significant only between T2 and control ration. Total antioxidant was significantly higher in T1 and T2 compared with control group, while the highest value was recorded with T2 in both breeds.https://ejsgs.journals.ekb.eg/article_56660_03b74f19c87b115f1fdbc26af5441329.pdfEgyptian Association for Sheep and GoatsEgyptian Journal of Sheep and Goats Sciences2090-038614220190801Influence of adding different energy sources to the bull and ram spermatozoa exposed to different refrigerating times1185666110.21608/ejsgs.2019.56661ENM. Y.MohamedAnimal Production Research Institute (APRI), Ministry of Agric., Dokki, Giza, Egypt.A. M.Abd El-HafeezAnimal Production Research Institute (APRI), Ministry of Agric., Dokki, Giza, Egypt.A. M.ShaarawyAnimal Production Research Institute (APRI), Ministry of Agric., Dokki, Giza, Egypt.Journal Article20191103Semen storage changes sperm synthesis and biochemical characteristics and hence hinders ferti-lizing ability. Mixture of two various sugar molecules appeared an improved positive impact on stored spermatozoa of different species. The current study aimed to investigate the effect of fructose, sucrose and raffinose supplementation to Tris-glucose-egg yolk extender (TGY) beside comparing their effect with the effect of commercial Triladyl® extender on bull’ and ram’ semen stored at 5 °C for 96 hours. The semen samples were pooled, extended and divided into five portions. TGY or Triladyl® extenders were diluted at rate 1 part of raw semen: 5 parts of the extender. The TGY diluent was split into four diluent parts in sterilized test tubes. TGY and Triladyl® extenders contained one type of sugar, while the other three extended semen samples contained two types of sugar including TGY plus 0.990 g fructose (TGYF), 0.700 g sucrose (TGYS) and 0.700 g raffinose (TGYR) /100ml extender. The ex-tended semen was stored at 5°C for 0, 24, 48, 72 and 96 hours. The obtained data show that spermato-zoa parameters significantly (P < 0.01) decreased with increasing preservation period of all diluent samples. Meantime, supplementation with fructose, sucrose or raffinose with TGY extended samples improved significantly (P < 0.01) sperm properties (motility, livability with acrosomal status and normality, enzymatic actions of AST, ALT, LDH, and ALP, and sperm penetration ability for both bull and ram diluted semen. Concerning the sperm characteristics of the commercial Triladyl® extend-er, it was better than those of TGY without any supplementation for both bull and ram diluted semen.<br />In conclusion, the obtained results suggest that obtaining a reasonable and advantageous impact for the preservation of bull and ram spermatozoa could be acquired by using diluents containing a sugar blend. However, as these results depend on in vitro assessments, there is a need for further fertil-ity trials to confirm it.https://ejsgs.journals.ekb.eg/article_56661_e82cc52dac4aaa7536d6b2bc28f52671.pdf