@article { author = {El Harairy, M. and Shamiah, SH. and Sakr, A.}, title = {RELATIONSHIP BETWEEN FERTILITY AND SCROTAL-TESTICULAR ULTRASONOGRAMS IN YOUNG EGYPTIAN BUFFALO BULLS}, journal = {Journal of Animal and Poultry Production}, volume = {5}, number = {9}, pages = {525-536}, year = {2014}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2014.70621}, abstract = {The present study aimed to evaluate some scrotal-testicular ultrasonography measurements in relation with semen quality of buffalo bulls at early ages. A total of 12 buffalo bull calves having 140-160 kg live body weight and aged 11-17 months were used in this study. Three ultrasonography examinations were performed at four age categories (11, 13, 15 and 17 mo) to estimate scrotal circumference (SC) and thickness of testicular mediastinum (MS) using B-mode ultrasound scanner. The testicular ultrasonograms were analyzed with the ultrasound machine using the spot metering technique, then mean pixel intensity values (PV, scale: 0-255) was calculated. Semen was collected at the same age categories and evaluated for ejaculate volume (EV), and percentage of mass motility (MM), dead sperm (DS) and abnormal sperm (AS) as well as sperm concentration (CN), then total sperm output (TSO) was calculated. Correlation coefficients for ultrasonography measurements and semen parameters were calculated. Results showed that SC, MS and PV were not affected significantly by age category, although there was a tendency of increase in SC and MS, and reduction in PV by increasing age category. EV and percentage of MM, DS and AS increased (P<0.05) by increasing age category, but all changes were significant (P<0.05) between 11 and 13 mo of age. SN showed an opposite trend of change, while TSO was not affected significantly by age category. There were insignificant differences in semen quality of bull calves with SC of ≤21or 22-30 cm, while semen quality was affected by both MS and PV. Bull calves having MS of >2 mm and PV of >141had better semen quality than those with ≤2 mm and ≤140 as MS and PV, respectively (P>0.05). The strongest correlation was positive between age and pixel value (r = 0.776, P<0.01). Based on the obtained results in the current study, it would be valuable to evidence the relationship between scrotal-testicular ultrasonography examination and future fertility based on developmental parameters measured in the young buffalo bull calves at early postpubertal ages.  }, keywords = {:Buffalo calves,Ultrasonography,pixel intensity,semen quality}, url = {https://jappmu.journals.ekb.eg/article_70621.html}, eprint = {https://jappmu.journals.ekb.eg/article_70621_c2c16eab42beb74b8cdb6efc15ddfdb7.pdf} } @article { author = {Shamiah, Sh.}, title = {IN VITRO DEVELOPMENTAL POTENTIAL OF BLASTOMERES SEPARATED FROM 4- AND 8-CELL RABBIT EMBRYOS AND CULTURED IN MEDIUM SUPPLEMENTED WITH AMINO ACIDS.}, journal = {Journal of Animal and Poultry Production}, volume = {5}, number = {9}, pages = {537-547}, year = {2014}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2014.70622}, abstract = {This study aimed to compare the potential competence of blastomeres separated from intact 4-cell and 8-cell APRI rabbit embryos, and the effect of addition of essential (EAA) and non-essential (NEAA) amino acids on their in vitro developmental. Embryos were recovered from 16 APRI doe rabbits line superovulated by Equine ChorionicGonadotropin (eCG), followed by 0.2 ml GnRH analogue immediately after natural mating with bucks of the same line. Embryos were collected 32–40 h post-coitum and only embryos at 4-cell and 8-cell stages were used in this study. Intact embryo or separated blastomeres were culture in vitro in TCM-199 unsupplemented (M1) or supplemented with 25 µl/ml (M2) or 50 µl/ml (M3) from each of EAA and NEAA. Results showed that separation rat of blastomeres was higher (P<0.05) from intact 4-cell than 8-cell embryos (95.3 vs. 81.7%). Cleavage (80.56 vs. 72.73%) andmorula/blastocyst production (65.74 vs. 58.18%) rates were higher (P≥0.05) of intact embryos at 4-cell stage than those at 8-cell stage. Percentage of degenerated embryos showed an opposite trend. Cleavage (68.89 vs. 63.85%) and morula/blastocyst production (47.11 vs. 44.06%) rates were higher of blastomeres of 4-cell than 8-cell embryos. Percentage of degenerated embryos showed an opposite trend. M3 improved the cleavage of blastomeres of 4-cell embryos (76.92 vs. 61.33%, P<0.05) and those of 8-cell embryos (67.46 vs. 56.69%, P≥0.5)  as compared to M1, meanwhile M2 insignificantly improved cleavage rate of blastomeres of 4-cell or 8-cell embryos. Also, M3 improved (P<0.05) morula/blastocyst production rate of blastomeres of 4-cell or 8-cell embryos as compared to M1 and M2. Percentage of degenerated embryos was insignificantly improved by amino acid addition (M2 and M3) as compared to M1. In conclusion, potential competence of blastomeres to morula/blastocysts was better when blastomeres were separated from intact embryos at 4-cell than at 8-cell stage. This potential competence of blastomeres of 4-cell or 8-cell embryos to morula/blastocyst stage improved when in vitro culture medium (TCM-199) was supplemented with essential and non-essential amino acids at a level of 50 µl/ml from each.  }, keywords = {Rabbit,intact embryo,blastomeres,morula/blastocysts,Amino acids}, url = {https://jappmu.journals.ekb.eg/article_70622.html}, eprint = {https://jappmu.journals.ekb.eg/article_70622_442e2b0687e17bd1bcdbedd4471f8b2f.pdf} } @article { author = {Dorra, Tork and El-Moghazy, Gihan and Abo El-Maaty, Hayam and Eid, Rana}, title = {EFFECT OF DIETARY SUPPLEMENTATION WITH NANO-SELENIUM OR GLUTAMINE ON GROWTH PERFORMANCE AND CARCASS CHARACTERISTICS OF GROWING RABBITS FED DIETS CONTAINING TWO CRUDE PROTEIN LEVELS}, journal = {Journal of Animal and Poultry Production}, volume = {5}, number = {9}, pages = {549-562}, year = {2014}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2014.70628}, abstract = {In this experiment, fifty four, 6-week-old weaned New Zealand White rabbits were used to investigate the impact of dietary supplementation with nano-selenium or glutamine on growth performance and carcass characteristics of growing rabbits fed diets containing two crude protein levels. A factorial experiment (2x3), being two levels of dietary crude protein (16 and 14 %) without or with organic nano-Se (0.1 mg/kg feed) and glutamine (10 g/kg feed) were performed. Rabbits were randomly distributed into 6 equal experimental groups; each contained three equal replications. Each replicate group was housed in a separate cage and fed their respective experimental diets from 6 to 15 weeks of age. Feed and water were offered ad libitum throughout the experimental period. Apart from the effect of feed supplements, rabbits fed the normal crude protein level (16%) achieved significantly better growth performance (final live body weight, daily weight gain, daily feed intake and feed conversion ratio) while carcass traits were not affected compared with those of rabbits fed the low crude protein level. But dietary supplements (nano-Se or glutamine) did not significantly affect criteria of growth performance or dressing-out percentage of rabbits. Dietary protein by added supplements interaction did not significantly affect traits, investigated in the present study, the whole experimental period. Based on the present results, it can concluded that the crude protein level (14%) is inadequate for attaining normal growth of post-weaning New Zealand White rabbits. However, dietary supplementation with nano-selenium or glutamine proved to be ineffective.                  }, keywords = {Rabbits,performance,nano - selenium,Glutamine,carcass traits}, url = {https://jappmu.journals.ekb.eg/article_70628.html}, eprint = {https://jappmu.journals.ekb.eg/article_70628_f9b3774d1ea23524ad21f1db59e4e2d6.pdf} }