@article { author = {Mehrez, A. and Gabr, A. and El-Ayek, M. and Ahmed, M. and Gad, Alaa}, title = {SUPPLEMENTING LIVE DRIED YEAST (Saccharomyces cerevisiae) TO DIETS VARYING IN ROUGHAGE: CONCENTRATE RATIO: 1- DIGESTIBILTY COEFFICIENTS, FEEDING VALUES AND FERMENTATION IN THE RUMEN OF ZARAIBI GOAT BUCKS}, journal = {Journal of Animal and Poultry Production}, volume = {4}, number = {6}, pages = {335-347}, year = {2013}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2013.71344}, abstract = {This study was conducted to investigate the effect of live dried yeast (Rumi-Yeast, RY) (Saccharomyces cerevisiae) supplementation, which is a commercial probiotic containing yeast, on digestion coefficients, feeding values and some rumen parameters of Zaraibi goats diets at two roughage (corn silage, CS): concentrate (concentrate feed mixture, CFM) ratios (70: 30 and 30: 70%) i.e. high roughage (HR) and high CFM (HC). Both diets were either used with RY (3 g/h/d) or without RY addition. Twelve mature Zaraibi bucks with an average live body weight of 60±0.4 kg were selected randomly from station herd and divided into four equal groups according to their body weight (3 bucks in each). Four experimental diets were formulated as follows: Diet 1: 70% CFM + 30% CS with RY, Diet 2: 70% CFM + 30% CS without RY, Diet 3: 30% CFM + 70% CS with RY and Diet 4:  30% CFM + 70% CS without RY.  The main results showed that addition of RY significantly (p˂0.05) enhanced all nutrients digestibility coefficients, as well as digestibility of cell wall constituents (NDF, ADF, ADL, cellulose, hemicelluloses). Live dried yeast addition improved nutritive values as total digestible nutrients (TDN) and digestible crude protein (DCP %). Rumen parameters (pH values, TVFA’S and ammonia-N concentrations) were improved with HC diets compared with HR ones. In conclusion, live dried yeast (Rumi-Yeast) addition to diets of Zaraibi goats diets improved most of the tested parameters mentioned before and has a higher influence when included with HC  than with HR  diets under field condition.  }, keywords = {Zaraibi goats,live yeast culture,roughage: concentrate ratio,digestibility coefficients,rumen parameters}, url = {https://jappmu.journals.ekb.eg/article_71344.html}, eprint = {https://jappmu.journals.ekb.eg/article_71344_6524b37fc309ffe21c64a13c76a36281.pdf} } @article { author = {Abdel-Khalek, A. and El-Harairy, M. and Mehrez, A. and Fouad, W.}, title = {UTERINE INVOLUTION AND REPRODUCTIVE PERFORMANCE OF LACTATING FRIESIAN COWS TREATED WITH OXYTOCIN AND PROSTAGLANDIN (PGF2α) AT CALVING}, journal = {Journal of Animal and Poultry Production}, volume = {4}, number = {6}, pages = {349-362}, year = {2013}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2013.71346}, abstract = {This study was carried out at Sakha Experimental Station, belonging to Animal Production Research Institute to evaluate the effects of oxytocin (                      OT) and prostaglandin (PG) administration within 6-12 h of calving on uterine involution and reproductive efficiency of lactating Friesian cows. Total of 15 multiparous Friesian cows with normal parturition averaging 400-650 kg live body weight, 2-7 parities and 2.5-3.5 body condition score were used in this study. Animals were divided into three groups, 5 animals in each. Animals in the 1st group were i.m. injected with saline solution (control). Animals in the 2nd and 3rd groups were administrated with an i.m. injection of 50 IU OT and 3 ml PG (Estromate). Animals in all groups were administrated during the same injection schedule (6-12 h of calving). Routine examination of the genitalia per rectum was conducted once weekly to judge the uterine involution by ultrasonography to determine diameter of uterine horns (gravid and non-gravid), uterine body, length and diameter of cervix and vaginal length. Pregnancy was diagnosed by rectal palpation on day 45 post-insemination, days open (DO) and number of services per conception (NSC) were recorded. Results showed that diameter of non-gravid horns showed insignificantly slight reduction during post-partum period in each group. Diameter of gravid horns decreased (P<0.05) up to day 35 in control group, versus days 21 and 28 of post-partum in OT and PG groups, respectively. Diameter of the uterine body reduced (P<0.05) in OT and PG up to day 21 of post- partum as compared to day 28 in the control group, thereafter uterine horn diameter showed insignificant reduction in each group. Cervical length and diameter reduced (P<0.05) up to day 28 in the control group versus day 21 in OT and PG groups. The changes in vaginal length were not significant during post-partum in each group. Period elapsed from parturition to detectable symmetrical uterine horns was shorter in OT and PG groups (29.9 and 28.4 d) than in the control group (33.7 d), respectively. However, nearly complete cervical closure occurred earlier in treatment groups (26.8 d for OT and 25.5 d for PG groups) than in the control one (28.6 d), but the differences were not significant. It is of interest to note that resumption of vaginal length had the same duration, being on day 14 of post-partum period in all groups. Conception rate (CR) within 120 days of post-partum period was 66.7, 80 and 40% in OT, PG and control groups, respectively. Increasing CR of cows in PG group was associated with greater NSC (1.5 services) and longer DO (79.8 d) than those in the control group (1.0 service and 47.5 d, respectively). However, cows in OT group showed greater NSC and longer days open (2.5 services and 80.5 d., respectively). In conclusion, prostaglandin treatment within 6-12 h of calving (i.m. injection of 3 ml Estromate) as a purpose of stimulating involution had pronounced effect on the duration of uterine involution and improving reproductive performance of Friesian cows in term of conception rate.  }, keywords = {cows,uterine involution,oxytocin,prostaglandin,Reproduction}, url = {https://jappmu.journals.ekb.eg/article_71346.html}, eprint = {https://jappmu.journals.ekb.eg/article_71346_d1a265eee09884729b76ce64d0be7bef.pdf} } @article { author = {Farrag, F. and Khalil, F. and Mehrim, A. and Refaey, M.}, title = {PAWPAW (Carica papaya) SEEDS POWDER IN NILE TILAPIA (Oreochromis niloticus) DIET 1- GROWTH PERFORMANCE, SURVIVAL, FEED UTILIZATION, CARCASS COMPOSITION OF FRY AND FINGERLINGS}, journal = {Journal of Animal and Poultry Production}, volume = {4}, number = {6}, pages = {363-379}, year = {2013}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3642}, eissn = {2090-3723}, doi = {10.21608/jappmu.2013.71343}, abstract = {The objective of the present study was to determine the effects of dietary inclusion of different levels of pawpaw seeds powder (PSP) at different periods on the growth performance, survival rate, feed utilization and carcass composition of fry and fingerlings of Nile tilapia (Oreochromis niloticus). The experiment was divided into two periods; the first was feeding period of Nile tilapia fry with PSP for 71 days; and, the second was rearing period where the Nile tilapia fingerlings fed control diet (0 g/kg diet from PSP) for 84 days. Apparently-healthy 1200 Nile tilapia fry of one day old with an average initial body weight 0.012 g/fry were randomly distributed to 20 treatments. Each treatment was referred to three aquaria. The PSP was added to the basal diet at levels of 0, 2, 4, 6 and 8 g/kg diet for 15, 30, 45 and 60 days, different periods. The results of the first period showed no significant (P ≥ 0.05) differences in all growth performance parameters and feed conversion ratio (FCR) during all periods (15, 30, 45 and 60 day); however, different levels of PSP showed significant (P ≤ 0.01) improvement in all growth performance, survival (intervals SR and final SR) and feed utilization (FI and FCR) by increasing level of PSP till 6 g PSP/ kg diet, then significantly decrease (P ≤ 0.01) till 8 g PSP / kg diet. In case of the second period, all growth performance parameters and feed utilization (FI and FCR) gradually (P ≤ 0.01) improved with increasing feeding periods until 45 day, and then decreased with increasing feeding period (60 day). The interaction between levels of PSP and different periods of treatment indicated that 6 g PSP/kg diet for 45 day had the best (P ≤ 0.01) values of FW, TWG and ADG compared with other treatments. Thus, the results of this study lead to useful and safety recommended use of 6 g PSP /kg diet for 45 day, to be economic and efficient for fish farms.  }, keywords = {Nile tilapia,Pawpaw seeds powder,fry and fingerlings,Growth performance}, url = {https://jappmu.journals.ekb.eg/article_71343.html}, eprint = {https://jappmu.journals.ekb.eg/article_71343_36aaa1d9c12b0a3c0589482c0434836d.pdf} }