Follicular diameters and progesterone level in Egyptian ewe lambs using flushing and some hormonal treatments

Abstract

The objectives of this study were to explore the influence of flushing and hormonal treatments on the follicular diameters and progesterone level during estrus and pregnancy rate in Egyptian ewe lambs. This study was carried out on 25 ewe lambs clinically healthy (body weight 27-33 Kg. and age 8-12 months). The animals divided into 5 groups; group 1: served as a control, group 2: received vaginal sponges impregnated medroxyprogesterone acetate (MAP) for 14 days, group 3: received vaginal sponges impregnated with MAP for 14 days, on day of sponge removal each animal injected with pregnant mare serum gonadotropin (PMSG), group 4: received gonadotrophin releasing hormone (GnRH) on day 0, and injected with prostaglandin F 2α (PGF 2α ) on day 7, after 48 hours, animals treated with the second dose of GnRH and group 5: injected with PGF 2α 7 days and after 72 hours the animals injected with hCG during this period. Animals fed 3 kg. trifolium alexandrinum plus 500 gm concentrate diet. The results revealed that the follicular diameters (mm) showed higher (P<0.05) values after two days of the treatments than control group, and all treatment groups were increased (P<0.05) in the follicular diameters (mm) on both ovaries after the end of treatments within three days. In addition, during the first month of gestation period concentrations of serum progesterone were significantly (P<0.05) higher in groups 2 and 3 compared to groups 1 and 4. From this study we concluded that, using intra-vaginal sponges impregnated with medroxy-progesterone acetate plus pregnant mar serum gonadotropin (PMSG) and gonadotropin releasing hormone plus prostaglandin F2α (GPG) protocol, may be improved reproductive performance in native ewe lambs.

Impact of epidermal growth factor and/or β-mercaptoethanol supplementations on the in vitro produced buffaloes' embryos

“…Cleavage, morula, and blastocyst rates were increased in the media containing 50 μM of βME rather than those of control which agreed with Sadeesh et al ( 20 ), who stated that supplementation of antioxidants such as βME to the culture medium enhanced the antioxidant systems within the embryo and stimulated the embryonic development. Thus, the oocyte developmental competence could be improved by increasing the antioxidant capacity of the oocytes during maturation in vitro ( 36 , 37 ). The present results are supported by Sidi et al ( 18 ) studies which reported that low molecular weight thiol-compounds like the cysteamine or βME could stimulate the synthesis of oocyte GSH.…”

First record of the terrestrial snail Cochlicella acuta (Gastropoda: Pulmonata: Geomitridae) in Assiut governorate, Upper Egypt

“…C. barbara can act as an intermediate host for Protostrongylus rufescens (sheep lungworm) (Herbert, 2010). Introductions of nonindigenous species can result in substantial ecological, agricultural, medical, and economic problems and extirpation of native fauna (Ali et al, 2019;Rahel, 2002). Several studies indicated that this species was found in many Delta Governorates, northern Egypt (Akra 2001;Ali, 2017;Eshra, 2013;Gazzy et al, 2019;Mohammed 2015).…”

The Possible Protective Role of Aqueous Extract of Propolis against Hepatotoxicity, Renal and Testicular Toxicity Induced by Cadmium Chloride in Male White Rats

“…Propolis contains vitamins B1, B2, and B6, as well as minerals magnesium, calcium, potassium, iron, and a few enzymes; succinic dehydrogenase, glucose-6-phosphatase, adenosine triphosphates, and acid phosphatase (Lotfy, 2006). The phenolic compounds contribute to the antioxidant, antimicrobial, antiviral, anti-inflammatory, antifungal, wound healing and cardio protective functions (Huang et al, 2014;Ali et al, 2019;Hussein et al, 2022).…”