Waleed Senosy

New Valley University | NVU · Theriogenology

Infectious bronchitis virus (IBV) is still the etiology of serious economic losses among poultry flocks despite extensive vaccination regimens. During this study, 100 samples were collected from different poultry flocks, New Valley Governorate, Egypt in the period 2022-2023. Positive IBV samples using real time RT-PCR assay (16 samples show positiv...

Introduction The rutting period imposes a stressful condition on male camels, which results in elevated serum cortisol levels and alterations in their sexual behavior. Therefore, the current work was carried out to investigate the effect of mineral-vitamin premix supplementation on behavior, reproductive performance, hormones, serum oxidative stres...

The beneficial effect of propylene glycol (PG) to mammals as an energy source has been reported. The aims of present study were to investigate the effects of propylene glycol drenching to Farafra ewes on body weight gain and feed utilization efficiency, development of ovarian follicles, uterine involution and reproductive. Fifty ewes were randomly...

Effects of non steroidal aromatase inhibitor letrozole on ovarian function in ewe were investigated through testing the hypothesis that letrozole will arrest the growth of dominant follicles, resulting in emergence of a new follicular wave at a predictable post treatment interval. treatment ewes (n = 10) were treated using intravaginal sponge (rega...

Pluriparus Ossimi (n = 50) ewes were used to investigate the immune profile of the affected ewes to accurately diagnose clinical and subclinical endometritis and associations with biochemical variables. Ewes were slaughtered and animals were classified into control (no fertility problems), subclinical endometritis (SCE) and clinical endometritis (C...

Pluriparus Ossimi (n = 50) ewes were used to investigate the immune profile of the affected ewes to accurately diagnose clinical and subclinical endometritis and associations with biochemical variables. Ewes were slaughtered and animals were classified into control (no fertility problems), subclinical endometritis (SCE) and clinical endometritis (C...

Abstract: The objective of this study was to investigate the effects of pre and post-lambing intramuscular (i.m.) injections of vitamin E (VE) and selenium (Se) on the performance, reproductive indices and metabolic status of Ossimi ewes. A total of 20 pregnant ewes were divided randomly into two equal groups of ten animals. The control group (CG)...

The present study was carried out in the Experimental Farm of Animal Production Department, Faculty of Agriculture, New Valley Branch, Assiut University. The study investigated the effect of some antioxidants, i.e., zinc sulfate administration, vitamin E + selenium (Se) injection on hemato-biochemical indices and antioxidant status of sixteen Aberd...

Our study aimed to compare between the efficiency of kisspeptin-10 (Kp10) and gonadotropin-releasing hormone (GnRH) as a trigger stimulator for gonadotropins; luteinizing hormone (LH), follicle-stimulating hormone (FSH) and testosterone (T) in male calves. Four prepubertal male Japanese Black calves were used. The animals were given GnRH or Kp10 se...

Contents The effect of organic phosphorus on metabolic, haematological and hormonal status, restoration of ovarian functions and conception rate in anoestrous Farafra ewes in subtropics were evaluated. Anoestrous Farafra ewes (n = 24; 34.72 ± 0.52 kg body weight) were allocated into two equal groups: control and phosphorus groups. The ewes of phosp...

The present study aimed to improve ovarian follicle development and plasma metabolites and hormone concentrations upon supplementation of Boer goats with green microalga (Dunaliella salina; 10 g/head/day) (N = 20; MAT group) compared to control (N = 10; not receive microlagae) in subtropics. Estrus was synchronized in all animals by two intramuscul...

This work was planned to compare three methods for selection of active buffalo spermatozoa, examine the effects of these separation methods on morphology, viability and functions of spermatozoa used for IVF purposes. Ten frozen straws per trial (10 times) were pooled and divided into 4 aliquots: A) First aliquot was considered as control without an...

The objective of this study was to evaluate if short-term high-energy diet treatments have any overstimulatory effects on ovarian function and metabolic status in Ossimi ewes synchronized with progesterone sponge. Thirteen ewes were divided into high-energy (HEG; n = 7) and normal-energy or control (NEG; n = 6) groups. Progesterone sponges were pla...

The effect of energy supplementation for short period on follicular turnover and estradiol 17-β (E2) concentration during the estrus cycle in the subtropics was studied in 13 ewes (7 ewes subjected to high energy, HEG and 6 as normal energy group, NEG). After ovulation (day 0), a high-energy diet (10.87MJ ME/kg diet; 130 % ofmaintenance) was fed to...

Objectives: The study was designed to investigate the effects of drenching with propylene glycol (PG) on body condition, serum metabolites and milk production during the transition period of dairy buffaloes. Material and methods: Animals were randomly allocated to a control group (n=5) and a PG group of 10 buffaloes that were drenched with 500 m...

This study was conducted to investigate the possible protective role of thymoquinone (TQ) and L-cysteine on the reproductive toxicity of male rats induced by cadmium chloride (CdCl2). Forty rats were divided into four even groups. The first group served as untreated control. The second, third and fourth groups received CdCl2, CdCl2 and TQ, and CdCl...

In this study we compared the effect of dinoprost and cloprostenol on changes of corpus luteum blood flow during luteolysis. Ten nonlactating cyclic ewes were synchronized with double PGF2α injections 11 days apart. At Day 10, the animals were classified into 2 groups and received the third dose of PGF2α after confirmation of the presence of a matu...

Five cyclic cows were used to evaluate whether a single intrauterine treatment with bovine interferon tau (IFN-T) could lengthen inter-estrus intervals and CL lifespan, and the appearance and disappearance of the adverse side effects of IFN-T administration. Each cow was administered 2 mg of IFN-T dissolved in 5 ml PBS (three times in three differe...

A total of 65 multiparous cows that calved during the hot season (n = 21), temperate season (n = 23) or cold season (n = 21) were used to investigate the relationships between heat stress, seasonal changes, metabolic traits, body condition score (BCS), resumption of ovulation and occurrence of subclinical endometritis (SE). Cows were monitored for...

The effect of energy supplementation for a short period on follicuar turnover and estrogen concentration during the estrus cycle in subtorpics was studied in 13 ewes (7 ewes subjected to high energy, HEG and 6 as normal energy group, NEG). After ovulation (Day 0), a high-energy diet (10.87MJ ME/kg diet; 130 % of maintenance) was fed to HEG from Day...

The aim of the study to monitor post partal uter-ine involution, ovarian activity and biochemical parameters and it is relation to the subsequent fertility. A total sixty normal calving pluriparous buffaloes were examined between 14 th and 75 th day post partum (p.p.) rectaly, ultrasonically and blood sampling were collected on weekly sessions. The...

Uterine torsion represents a serious complication of pregnancy and has been reported as a state of clinical emergency that may lead to potentially fatal systemic disturbances if untreated promptly. Therefore, the present study was carried out to clinically evaluate uterine torsion with special reference to the diagnostic and prognostic value of blo...

High-yielding Holstein-Friesian recipients (n = 43) were used in order to investigate the relation between energy balance status during the early postpartum period and subsequent embryonic mortality after transferring good-quality frozen embryos. Blood samples were collected during the second, third, fourth, fifth, sixth and seventh weeks postpartu...

Contents Seventy pluriparous high‐yielding cows were used to investigate the impact of metabolic traits and body condition score (BCS) during early lactation on subclinical endometritis diagnosed at weeks 5, 6 and 7 postpartum (pp). Blood samples were collected from animals with no peripartum problems from the second (W2) to seventh (W7) weeks pp t...

Contents The effect of ovarian predominating structures and uterine condition on the result of some diagnostic tools for the evaluation of endometritis was studied in postpartum (pp) Holstein–Friesian dairy cows (n = 58). Endometrial cytology (EC) and the evaluation of vaginal mucus by vaginoscopy or Metricheck were performed weekly from week 3 to...

Contents Clinically normal Holstein‐Friesian cows (n = 43) were used to establish a relationship between the evaluations of the uterine condition by vaginoscopy, Metricheck, endometrial cytology (EC) and ultrasonography (US) during post‐partum period (pp), and subsequent reproductive performance. The uterine status of the selected cows was evaluate...

The aim of this study was to validate a direct time-resolved fluoroimmunoassay (TR-FIA) for quantifying progesterone concentrations in milk during the bovine oestrous cycle. Holstein-Friesian and suckled and non-suckled Japanese Black cows were used to demonstrate the relationship between milk and plasma progesterone concentrations and to monitor p...

The uterine condition of clinically normal postpartum Holstein-Friesian dairy cows (n = 45) was evaluated once weekly (Weeks 3 to 7) by endometrial cytology, vaginal mucus collection device (VMCD), vaginoscopy, and ultrasonography to establish a relationship with postpartum resumption of ovulatory cycles. The time of first detection of the corpus l...