Ahmed Saad Ahmed HASSANEEN

South Valley University · Faculty of Veterinary Medicine

A four-years-old pluriparours pregnant ewe, of a body weight about 40 kg was presented with a history of restlessness, straining, and appearance of a permanent/complete cervico-vaginal prolapse as a smooth, red, and rounded mass at the rear end of the ewe. There was no history of previous cervico-vaginal prolapses during or after previous pregnanci...

Elucidating the physiological mechanisms that control reproduction is an obvious strategy for improving the fertility of cattle and developing new agents to control reproductive functions. The present study aimed to identify kisspeptin neurons in the bovine hypothalamus, clarifying that a central mechanism is also present in the cattle brain, as ki...

Brucellosis in dromedary camel bulls leads to either temporary or permanent loss of fertility. Camel brucellosis is associated with both orchitis and epididymitis. However, the clinical signs of camel brucellosis are not clear as those in cattle. Therefore, this study aimed to diagnose camel brucellosis based on a serological screening using Rose B...

Platelet-rich plasma (PRP) is a biological hemocomponent derived from blood after the complete removal of red blood cells and the partial or complete removal of white blood cells to concentrate platelets in an appropriate volume of plasma. Platelets have important growth factors, cytokines, and active metabolites that improve the endometrial enviro...

The present study investigated the effects of epidermal growth factors (EGF) and/or β-Mercaptoethanol (βME) supplementations to oocyte maturation, fertilization, and culture media on the buffalo in vitro embryo production. The ovaries were collected and transferred within 2 h to the laboratory. The cumulus oocytes complexes were aspirated from 3 to...

The present study investigated the effects of epidermal growth factors (EGF) and/or β-Mercaptoethanol (βME) supplementations to oocyte maturation, fertilization, and culture media on the buffalo in vitro embryo production. The ovaries were collected and transferred within 2 h to the laboratory. The cumulus oocytes complexes were aspirated from 3 to...

Water buffaloes (Bubalus bubalis) are mainly distributed in tropical and subtropical countries that include the Indian sub-continent and some Mediterranean countries such as Egypt. The transition period is the most stressful period for buffaloes, and it is considered as a turning point in the productive cycle from one lactation to the next and incl...

Dystocia is a critical obstetrical problem in farm animals and is classified into maternal or fetal dystocia. The maternal causes of dystocia include different causes such as uterine torsion (UT), failure of cervical dilation (FCD), and uterine inertia (UI). Maternal dystocia induces massive oxidative stress due to increased production of free radi...

This study aimed to investigate the effect of oral supplementation of rumen-protected L-arginine on semen quality, testes, and accessory genital glands biometry in rams. Ten apparently healthy and fertile rams were randomly divided into two equal groups; control, and rumen-protected L-arginine (20 mg/Kg body weight for 30 days) treated group. In al...

The aim of the present study was to evaluate the efficacy of pudendal nerve block as an alternative procedure to epidural analgesia for penile relaxation in male goats. Five healthy male goats were subjected to pudendal nerve block and lumbosacral epidural analgesia with a twoweeks interval as a washing period. Bilateral pudendal nerve block was pe...

Background and Aim: The reproductive performance of dairy cows is of a high economic value to maintain efficient and sustainable productivity. Postpartum anestrus is one of the major infertility problems that cause limitation of dairy cow reproductive performance and productivity. The previous studies have reported using a polyherbal formulation...

This study aimed to determine whether combination of the controlled-internal drug releasing device (CIDR) within or before ovsynch protocols in acyclic postpartum buffaloes improves both the resumption of cyclicity and conception rate compared to ovsynch protocols only. Thirty-one clinically healthy female buffaloes (3-5 yearsold; and 440.0± 10.0 k...

Overproduction of free radicals is controlled by antioxidant defense mechanisms. These defense mechanisms are achieved by antioxidant enzymes such as catalase (CAT). The current study aimed to assess the changes in steroid hormones, oxidant/antioxidants biomarkers, lipid profiles/liver functions indices, renal function biomarkers and minerals metab...

The current study was designed to evaluate the growth factors and cytokines as insulin like growth factors binding proteins (IGFBP 1-4), Interferon Tau (IFNT) and Interleukins 6 and 13 (IL-6, -13) concentrations which associated with early embryonic deaths (EED) and fetal death (FD) in dairy cattle. A total number of nineteen (n=90), non-pregnant c...

Osteoarthritis (OA) has been considered the most common cause of lameness in equine, especially athletic horses. Different therapies are used for the treating of OA; hyaluronic acid (HA), a component of the articular cartilage matrix, has been shown to reduce OA-related lameness in horses. Recently, another biological therapy named platelet-rich pl...

The ductus deferens is a fundamental part of the male genital tract and the continuation of the epididymal duct. As a male secondary sex organ, the ductus deferens plays a crucial role in the nourishment, storage, and maturation of spermatozoa. Some studies have provided information about the ductus deferens structure in reptiles; however, the full...

The vascularization of the testis through testicular artery is of great importance to maintain its normal function. The vascular disruption due to inadequate arterial blood flow of the testis negatively affects testicular function and semen quality. This study aimed to determine the efficacy of gonadotropin-releasing hormone (GnRH) administration o...

[Introduction] Endometritis has a great impact on the fertility of dairy cows. There has been a concerted effort to develop reliable protocols that could be used to treat subclinical (SE) and clinical endometritis (CE). In this study, we investigated the effect of exogenous estradiol benzoate (EB) on uterine arteries blood flow and endometrial envi...

Hydrops of the fetal membranes (HFM) and fetal mummification are considered as pathological disorders of pregnant sheep. Arthrogryposis multiplex congentia was reported as a very rare congenital syndrome in newly born/stillbirth lambs or fetuses. A three-years- and sixth-months-old full-term pregnant Rahmani ewe was presented to Veterinary Teaching...

Invasive plants have very important ecological and socioeconomic impacts. Producing and dispersing many viable seeds are key plant functional traits for invaders. Ungulate grazing plays an important role in the endozoochorous seed dispersal within grasslands and rangelands. Grazing can be applied as a practical and economical control method for pla...

Invasive plants have very important ecological and socioeconomic impacts. Producing and dispersing many viable seeds are key plant functional traits for invaders. Ungulate grazing plays an important role in the endozoochorous seed dispersal within grasslands and rangelands. Grazing can be applied as a practical and economical control method for pl...

Breeding of crossbreed cow is of great significance in tropical and subtropical countries in order to maintain both high productivity and high ability to accommodate. To understand the haematological and biochemical changes related with puerperal metritis in crossbred cows as well as the effect of puerperal metritis on the fertility, the current st...

This study was carried out to compare the analgesic effects and haematobiochemical changes produced by the administration of lidocaine, detomidine and lidocaine–detomidine combination in the epidural space of goats. All goats were assigned to all of the three different epidural treatments using a balanced crossover design with two-weeks washout per...

The discovery of the role of kisspeptin neurons in the regulation of mammalian reproduction in 2003 was one of the biggest breakthroughs in reproductive endocrinology within the last few decades. Research during the past two decades since the discovery of kisspeptin has been unveiling the mechanism of how the hypothalamic kisspeptin neurons control...

The 5th International Conference of Youth Researchers on Agricultural and Veterinary Sciences, 18-19 March 2019

for a Review ArticleBuffalo is an important farm animal species for its high economic value as a source for milk and meat production with an estimated number of 5.4 million in 2011. Most of Egyptians prefer buffalo milk because of its white color and high fat contents (6.5-8.0 %). However, buffaloes have low reproductive efficiency and limited prod...

The male animal is considered as the half of the herd. And with the rapid adaptation of different techniques of the artificial insemination, the problem of fertility and infertility in male animals is getting more attention. It is most important to investigate and evaluate the breeding animals before they are used in service and discard those which...

This dissertation demonstrated that 1) Kisspeptin neurons are expressed in two hypothalamic regions in cows: the ARC and the POA; 2) Neurokinin B and Dyn are expressed in the ARC kisspeptin neurons in both the follicular and luteal phases; 3) In the POA kisspeptin neurons, NKB and Dyn are not expressed and the kisspeptin expression in the follicula...

【目的】われわれは以前，黄体期初期の成熟雌ウシにおいてウシ全長キスペプチン（Kp-53）の末梢投与が第1卵胞発育波主席卵胞の発育およびLH分泌を刺激することを報告した（第104回本大会）。この結果から，キスペプチンの卵胞発育刺激効果がウシの発情行動の強化および排卵促進に利用できるのではないかと考えた。本研究では，卵胞期のウシを用いて，キスペプチンの末梢投与が性腺刺激ホルモン分泌，発情行動および排卵におよぼす効果を検討することを目的とした。【方法】黒毛和種経産雌ウシを用い，Presynch-Ovsynch法（Moreira et al., J. Dairy Sci., 86, 1646–59, 2001）を一部改変して適用し，プロスタグランジンF2α（PG）-PG-GnRH-PGの順にそれぞれ...