Papers by Sherif Y Eid
Accident Analysis & Prevention, May 31, 2021
The experiment goal was the investigation of thyme (T), celery (C) and salinomycin effects on imm... more The experiment goal was the investigation of thyme (T), celery (C) and salinomycin effects on immune response, neurotransmitters related to milk production in Barki ewes. Total 72 mature ewes (2-3 years & 40±1.5 Kg BW) randomly pined equally into five groups. Group-1 was control; groups 2 & 3 received 20g/head/day T and C, respectively. Group-4 received 10g T+ 10g C/head/day, group-5 treated with salinomycin 1g/head/day. Samples collected during 2 nd , 3 rd trimester of pregnancy and on delivery day (DD); milk yield assessed on 15, 30 and 45-day postpartum. T and/or C and salinomycin increased (P<0.05) superoxide dismutase (SOD), reduced glutathione (GSH) and glutathione disulfide (GSSG) during mid-, late-pregnancy and DD compared to control, celery and thyme increase malondialdehyde (MDA) (p<0.05) during mid-and late-pregnancy, respectively compared to other groups. Nitric oxide (NO) levels increased in thyme X celery (TxC) group during mid-pregnancy and DD with insignificantly compared with other groups. During mid-pregnancy TxC treatment increased (p<0.05) serotonin (5-HT) levels compared with other groups, the same was dopamine (DA), norepinephrine (NE) and tryptophan (Trp) levels (P>0.05). During late pregnancy 5-HT, DA, NE & Trp increased (P<0.05) in the thyme and/or celery group. While on DD salinomycin increased neurotransmitters (P<0.05) with an insignificant increase in other groups. Milk yield increased (P<0.05) during 15, 30 and 45 days postpartum in T and/or C groups than control and salinomycin. In conclusion, the applied treatments had a significant effect on reproductive performance, immune response in ewes throughout pregnancy and DD periods, and milk production during the postpartum period.
Accident Analysis & Prevention, May 14, 2021
The objective for our work was to estimate the milk yield and blood biochemical constituents of a... more The objective for our work was to estimate the milk yield and blood biochemical constituents of and weight daily gain of calves recently born from imported cows under hot summer conditions in Egypt. Thirty late-pregnant cows, aged 22-24 months, chosen randomly were used in this study. Experiment was carried out during the period from third stage of pregnancy and continued to 8 weeks postpartum. Imported late-pregnant cows divided into three groups, each group was 10 cows. 1st group was Brown Swiss (BS) cows, 2nd group was Simmental (S) cows and 3rd group was Holstein (H). Results showed that H cows have a lowest rectal temperature (RT) and respiration rate (RR) in compare with BS and S cows. Results showed that H cows have a highest daily milk yield while S cows have lowest values. BS and H cows have significantly higher total protein, albumin and urea concentrations than S cows. While, globulin and glucose concentrations were significantly higher in BS than its concentrations in S and H cows, respectively. Total cholesterol, phospholipids and creatinine concentrations showed the lowest values in BS cows as compare with S and H cows. Otherwise, BS cows have the highest triglycerides concentration as compare with H and S cows. About liver function showed the highest activity for AST in S cows and for ALT in H cows as compared of other groups. BS cows have significantly higher T4 and Estradiol17β levels than its levels in S and H cows, respectively. Birth weight of newborn both male and female calves as well as daily body weight gain of calves produced from the three imported cows were not differs Significantly. Two months weight of calves produced from S cows was significantly higher than BS and H cows, respectively. In conclusion, the three imported breed cows appears good resistance to heat stress effects under hot summer conditions in Egypt with extremely resistance for H cows.
LAP LAMBERT Academic Publishing eBooks, Aug 17, 2017
The intensive sheep management and wide spread application of the controlled breeding techniques ... more The intensive sheep management and wide spread application of the controlled breeding techniques such as estrus synchronization, artificial insemination, out of season breeding, finding out accurate techniques for assessment of reproductive activity in general and practical test for early pregnancy diagnosis increase the need to adjust the hormonal cascade through hypothalamic-hypophyseal-gonadal axis. In addition, detecting and/or illustrating the normal mating behavior puberty, period of estrus cycle and its hormonal regulation, pregnancy, lambing and post-natal care is needed to be accurately known to attain the most optimum reproductive efficiency and to magnify the marginal profit gained from sheep farming projects.The extraction and immunoassay of fecal steroids is an increasingly common technique, used in both captive and field studies to provide an approximation of animals’ circulating hormones through noninvasive method. Moreover, the technique for extraction of steroid hormones from feces is an important tool for monitoring the reproductive function of the animals.
Annals of Agricultural Science, Moshtohor, 2016
Journal of Nuclear Technology in Applied Science, 2018
Journal of Nuclear Technology in Applied Science, 2018
Arab Journal of Nuclear Sciences and Applications, 2019
The present study was conducted to compare the effect of Nano-selenium (Nano-Se) and sodium selen... more The present study was conducted to compare the effect of Nano-selenium (Nano-Se) and sodium selenite (SSe) on growth performance, antioxidative status and blood biochemical changes of growing New Zealand White (NZW) rabbits. The total number of five-week old rabbits were divided randomly into three groups (each of 24, 12 males and 12 females) were used. The first group was served as a placebo; in groups 2 and 3, each rabbit was intramuscularly injected once a week with 4ml solution of Nano-Se or SSe, respectively. The solution was adjusted to provide 30 µg Se/kg/live body weight. Growth trial lasted for two months. Results demonstrated that rabbits with Nano-Se treatment showed a higher rate in the total gain and daily gain weight compared to SSe and the control. Nano-Se and SSe showed lower AST and ALT activities than the control, with a high advantage for SSe. Both Nano-Se and SSe additives increased significantly GR and TAC activities compared to the control, the upper hand recorded by Nano-Se. MDA activity recorded a similar trend using Nano-Se with significant decrement than other groups. TC, LDL, VLDL, triglycerides, and phospholipids decreased significantly due to Nano-Se group than the others. Nano-se and SSe recorded a highly significant HDL, and triglycerides and VLDL than control, respectively. T3 and T4 levels were elevated dramatically in Nano-se group, also feed efficiency, feed conversion ratio and daily gain were improved. It can be concluded that Nano-se supplementation caused positive changes in blood constituents which improved growth performance of growing NZW rabbits more than SSe.
World Rabbit Science, 2019
The present study was conducted to compare the effect of Nano-Selenium (Nano-Se) and sodium selen... more The present study was conducted to compare the effect of Nano-Selenium (Nano-Se) and sodium selenite (SSe) on antioxidant enzyme activity, immunity and thyroid activity of growing New Zealand White (NZW) rabbits. In this study, 72 male rabbits (5 wk old) were divided randomly into 3 groups (24 rabbits each). The first group served as a placebo; in groups 2 and 3, each rabbit was intramuscularly injected once a week with 4 mL solution of Nano-Se or SSe, respectively, for a 2-mo period. The solution was adjusted to provide 30 μg Se/kg/live body weight. Results showed that Nano-Se treatment significantly (P<0.0001) increased in superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione (GSH) more than control, but decreased significantly each of glutathione disulphide (GSSG) and nitric oxide (NO) levels in serum. Likewise, supplementation of SSe increased (P<0.0001) GPx activity and significantly decreased both malondialdehyde (MDA) and GSSG levels more than control...
Egyptian Academic Journal of Biological Sciences. C, Physiology and Molecular Biology, Jun 1, 2020
The present study was conducted during estrous cycle and pregnancy period in Baladi female goats ... more The present study was conducted during estrous cycle and pregnancy period in Baladi female goats to study the effect of chromium and selenium with vitamin E on blood serum cortisol concentration. Seventy-two of mature Baladi does with age ranged from 2 to 3 years old and the mean body weight was 25.1±1.5 kg was used under two conditions of winter and summer seasons (36 animals/season). The animals were randomly divided into three groups, the 1st group was kept as control and the 2nd group was supplemented by chromium (chromium chloride trivalent), 0.8 mg/head/day. The 3rd group was intramuscularly injected twice a week with 2ml viteselen®, contained 0.5 mg selenium and 10.7 IU vitamin E (Se-E). Serum cortisol levels were assessed in the three experimental goats during the estrous and pregnancy periods. The results demonstrated that Goats supplementation with Cr or SeE significantly decreased (P<0.05) serum cortisol concentrations than control during estrous cycle. In addition, Cr mostly lowered (P<0.05) cortisol than control, but SeE thoroughly increased it during pregnancy. However, under mild season at pro-estrus phase Cr treatment increased cortisol significantly (P<0.05) than control. Also, during pregnancy period Cr decreased cortisol at Mid-Pregnancy and Late-Pregnancy periods; however, SeE increased cortisol at the Late-Pregnancy period than the control group. Under hot season, Cr treatment decreased (P<0.05) cortisol during estrous cycle, pregnancy period. However, injection of SeE decreased cortisol during estrous cycle and showed a contrary effect during pregnancy period. On the other side, Reproductive traits of female goats showed that, under mild season conditions Cr or SeE supplementations did not have any effect on goat's reproductive traits, in terms of conception rate, kidding rate, fertility rate, prolificacy and fecundity compared to control group. Under hot season conditions, Cr and SeE improved both of fertility and conception rate, as well as, increased fecundity percentage more than control. Cr group had lowest prolificacy, however; SeE had the highest one compared to control. Chromium group had significantly (P<0.05) higher birth weight of kids than control and SeE either at mild or hot season. However, injection of SeE did not affect litter birth weight under mild and hot conditions. So, It can be concluded that Cr and SeE supplementation can enhanced the reproductive and productive traits of female Baladi goats under hot season.
Zygote, 2020
Summary This research aimed to examine the effects of thyme, celery and salinomycin on ovarian se... more Summary This research aimed to examine the effects of thyme, celery and salinomycin on ovarian sex hormones, reproductive traits and antioxidant status during the estrous cycle. Seventy-five mature Barki ewes aged 2–3 years with an average weight of 40 ± 1.5 kg were assigned randomly into five groups (15 head/group). Group 1 was kept as the control; groups 2 and 3 received 20 g/head/day thyme (T) and celery (C) as dried herbs, respectively. Group 4 (T×C) received 10 g thyme + 10 g celery/head/day, and group 5 was treated with salinomycin 1 g/head/day. Blood samples were collected during follicular and luteal phases of the estrous cycle. Thyme and celery and the mixture of T×C increased (P < 0.01) estradiol-17β (E2) during the follicular phase of the estrous cycle, while only the celery group showed a marked (P < 0.001) increase in progesterone (P4) during the luteal phase compared with the control. Salinomycin supplementation decreased (P < 0.05) E2 concentrations during th...
Advances in Animal and Veterinary Sciences, 2021
Egyptian Academic Journal of Biological Sciences , 2020
Chromium Selenium-E heat stress Serum cortisol Reproductive and productive traits Goats
World Rabbit Science, 2019
The present study was conducted to compare the effect of Nano-Selenium (Nano-Se) and sodium selen... more The present study was conducted to compare the effect of Nano-Selenium (Nano-Se) and sodium selenite (SSe) on antioxidant enzyme activity, immunity and thyroid activity of growing New Zealand White (NZW) rabbits. In this study, 72 male rabbits (5 wk old) were divided randomly into 3 groups (24 rabbits each). The first group served as a placebo; in groups 2 and 3, each rabbit was intramuscularly injected once a week with 4 mL solution of Nano-Se or SSe, respectively, for a 2-mo period. The solution was adjusted to provide 30 µg Se/kg/live body weight. Results showed that Nano-Se treatment significantly (P<0.0001) increased in superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione (GSH) more than control, but decreased significantly each of glutathione disulphide (GSSG) and nitric oxide (NO) levels in serum. Likewise, supplementation of SSe increased (P<0.0001) GPx activity and significantly decreased both malondialdehyde (MDA) and GSSG levels more than control. Nano-Se significantly enhanced serum IgG and IgM more than SSe and control groups. Serum aspartate aminotransferase increased (P<0.0001) due to Nano-Se treatment as compared to control and SSe, although the lowest (P<0.0001) activity of alanine aminotransferase was recorded due to SSe supplementation. Nano-Se treatment increased (P<0.0001) both T3 and T4 concentrations more than other groups. Furthermore, administration of Nano-Se increased SOD, GPx, GSH, total antioxidant capacity (TAC) and adenosine triphosphate (ATP) in liver tissue of growing rabbits, while it decreased MDA and 8-hydroxy-2'deoxyguanosine (8-oHdG) levels in liver tissue compared with control. Also, SSe showed an increase (P<0.0001) in GSH, and ATP, but significantly decreased TAC and MDA levels compared with control. It can be concluded that Nano-Se supplementation significantly enhanced the activity of antioxidant enzymes in both serum and liver tissues, with a greater positive influence on immunoglobulin production and thyroid activity in growing NZW rabbits than SSe.
Arab Journal of Nuclear Sciences and Applications, 2019
The present study was conducted to compare the effect of Nano-selenium (Nano-Se) and sodium selen... more The present study was conducted to compare the effect of Nano-selenium (Nano-Se) and sodium selenite (SSe) on growth performance, antioxidative status and blood biochemical changes of growing New Zealand White (NZW) rabbits. The total number of five-week old rabbits were divided randomly into three groups (each of 24, 12 males and 12 females) were used. The first group was served as a placebo; in groups 2 and 3, each rabbit was intramuscularly injected once a week with 4ml solution of Nano-Se or SSe, respectively. The solution was adjusted to provide 30 µg Se/kg/live body weight. Growth trial lasted for two months. Results demonstrated that rabbits with Nano-Se treatment showed a higher rate in the total gain and daily gain weight compared to SSe and the control. Nano-Se and SSe showed lower AST and ALT activities than the control, with a high advantage for SSe. Both Nano-Se and SSe additives increased significantly GR and TAC activities compared to the control, the upper hand recorded by Nano-Se. MDA activity recorded a similar trend using Nano-Se with significant decrement than other groups. TC, LDL, VLDL, triglycerides, and phospholipids decreased significantly due to Nano-Se group than the others. Nano-se and SSe recorded a highly significant HDL, and triglycerides and VLDL than control, respectively. T3 and T4 levels were elevated dramatically in Nano-se group, also feed efficiency, feed conversion ratio and daily gain were improved. It can be concluded that Nano-se supplementation caused positive changes in blood constituents which improved growth performance of growing NZW rabbits more than SSe.
Article, 2018
The effect of chromium and selenium with vitamin E on progesterone (P4) and estradiol-17 β (E2) l... more The effect of chromium and selenium with vitamin E on progesterone (P4) and estradiol-17 β (E2) levels of Baladi female goats was the objective of this study as new techniques for improving the reproductive performance of Egyptian goats. Seventy-two of mature Baladi does were used through two conditions of winter and summer seasons (36 animals / season). The animals were randomly divided into three groups, the 1st group was kept as control and the 2nd group was supplemented by chromium. The 3rd group was intramuscularly injected twice a week with 2ml viteselen®, contained 0.5 mg selenium and 10.7 IU vitamin E (Se-E). Serum hormones levels were assessed in the three experimental goats during the estrous, pregnancy and postpartum periods. The results showed that P4 levels during estrous cycle and mid. pregnancy periods were significantly higher in mild season than in hot season while opposite trend was found during early and late pregnancy as well as postpartum period. E2 levels during postpartum period were significantly higher in hot season than in mild season while during estrous cycle no significant differences in E2 levels due to season. Chromium showed significant (P<0.05) increase in P4 levels in goats during each of estrous cycle and pregnancy periods and showed significant decrease in P4 levels in goats during postpartum period as compared with control. Selenium-E significantly increased the concentration of P4 in goats during each of the luteal phase of estrous cycle, pregnancy and at 30th day postpartum periods as compared with control. The opposite trend was found at 15th and 45th days postpartum. No significant difference in P4 due to Selenium-E during follicular phase of estrous cycle. Chromium showed significant decrease in E2 levels in goats at 15th and 45th days postpartum period while no significant differences in E2 levels due to chromium treatment during estrous cycle and 30th day of pregnancy period. Selenium-E increased significantly E2 level during estrous cycle and postpartum periods.
This experiment was conducted to study the effect of heat stress on some reproductive and product... more This experiment was conducted to study the effect of heat stress on some reproductive and productive performance in purebred and crossbred female goats under both of hot (summer season) and mild climatic (winter season) conditions. Forty mature female goats (20 Baladi and 20 crossbred (50% Zaraibi x 50% Baladi) used in this research. Results cundity were higher in experimental does during mild climate conditions than hot climate conditions. Birth weight recorded higher values in mild climate conditions in comparison with hot climate conditions. Concerning to breed, reproductive traits were higher in crossbred goat does compared with purebred goat does. Crossbred goat does showed higher (P<0.01 or P<0.0001) in all productive traits than Baladi goat does. Cortisol hormone concentration showed lower (P<0.0001) concentration under mild climate conditions than hot climate conditions during different stages of estrous cycle, pregnancy and postpartum periods. On the other in crossbred goat does compared with purebred does during different stages of estrous cycle, except diestrous period. Similar trend was found during pregnancy and postpartum periods (P<0.01 or P<0.0001). It could productive and productive traits of goats and in the same time, crossbred was better than purebred goats.
This experiment was conducted to study the effect of the treating Baladi female goats with chromi... more This experiment was conducted to study the effect of the treating Baladi female goats with chromium and selenium-E during estrous cycle, pregnancy and postpartum periods to alleviate thermoregulatory responses of animals under hot conditions in Egypt to improve their performance throughout these stages. It has been used in this research 72 mature Baladi does (36 animal / season) with an average age of 2-3 years and an average body weight of 25 Kg, the experiment lasted for two seasons (mild and hot). Animals were divided randomly into three similar groups, the 1 st group was kept without any treatments (control), the 2nd group was supplemented by chromium (chromium chloride, Cr). The 3 rd group was injected intramuscularly twice a week with 2ml viteselen®, contained 0.5 mg selenium and 10.7 IU vitamin E (SeE). Animals were kept in semi-open pens during the experimental period and allowed to graze for five hours daily at least. Thermoregulatory responses of the animal were estimated in terms of rectal temperature (RT), skin temperature (ST) and respiratory rate (RR). Results showed significant decrease in RT during the estrous cycle due to Cr and SeE treatments. Also, Selenium-E injection showed lower ST during most of the different stages of estrous cycle. Under hot season, each of chromium and selenium-E reduced ST during estrous cycle while this effect was only due to SeE for RR without chromium .Both Cr and SeE treatments decreased RT and ST throughout different stages of pregnancy, except at late pregnancy of SeE group. Under hot season conditions, does injected with SeE were the lowest in RR during the mid and late pregnancy compared with other groups. While Cr group did not reveal significant effect on RR. During postpartum period Cr and SeE supplementation under hot condition showed significant decrease in RT and ST. Both treatments decreased (P<0.05) RR during the postpartum period, only SeE exhibited this decline under hot season.
Thesis Chapters by Sherif Y Eid
Uploads
Papers by Sherif Y Eid
Thesis Chapters by Sherif Y Eid