Search Results

1 - 10 of 30 items :

  • "testosterone" x
Clear All
Effects of isoflavones on testicular weight and testosterone secretion in ISA Brown roosters

References Akinola O.B., Akinlolu A.A., Adekeye N.A., Oladosu O.S., Dosumu O.O., Olatunji L.A. (2007). Effect of methanol extract of soy on testicular morphometry and plasma testosterone levels. Pak. J. Pathol., 18: 20-24. Akiyama T., Ishida J., Nakagawa S., Ogawara H., Watanabe S., Itoch N., Shibuya M., Fukami Y. (1987). Genistein, a specific inhibitor of tyrosine-specific protein kinases. J. Biol. Chem., 262: 5592-5595. Ciereszko R., Opałka M., Kami ńska B., Wojtczak M., Okrasa S., Dusza L. (2001

Open access
Hydroalcoholic Extracts of Eclipta Alba as a Reversal Agent in Boric Acid Induced Male Reproductive Toxicity

Abstract

Boric acid administration has a detrimental effect on reproductive organs, livers, and kidneys in rats. In the present study, male Wistar rats were orally fed with boric acid at a dose regimen of 350 mg/kg bodyweight for a period of 30 days, followed by oral administration of hydroalcoholic extract of Eclipta alba at a dose regimen of 500 mg/kg body weight orally for 60 days. The boric acid treated group showed signs of toxicity, such as liver damage, nephropathy, and complete damage to the testis, as early as 15 days which became aggravated by 30 days of the boric acid study period. Oxidative stress in all of the vital organs showed a significant increase. Following the plant extract treatment, complete reversal in reproductive toxicity was observed. The hormonal levels viz., testosterone, estrogen, and FSH returned to normal ranges after the 60 days of plant extract treatment. Significant reversal comparable to the control groups was observed in oxidative stress in the vital tissues. The fertility of the rats was found to be restored. The altered tissue morphology showed significant signs or recovery as observed under light microscopic examination. Thus, overall recovery was observed in the boric acid treated rats which received treatment with the plant extract. It can be concluded that Boric acid definitely has detrimental effects on the male reproductive system and the plant extract showed promising results. However, the mode of action and the active components for the same needs to be further investigated.

Open access
Sex identification comparison of barn owls (Tyto alba javanica) using morphological features and molecular-based methods

References Archawaranon M 1988: Control of aggression and dominance in white-throated sparrows by testosterone and its metabolites. Hormones and Behavior 22: 497–517. Archawaranon M 2004: Rapid sexing hill mynah Gracula religiosa by sex chromosomes. Biotechnology 3: 160–164. Colvin BA 1984: Barn owl foraging behaviour and secondary poisoning hazard from rodenticide use on farm. PhD Thesis. University of Bowling Green, Ohio. de Jong J 2011: Een nieuwe methode voor het seksen van Kerkuilen [New method of barn owl sexing]. Uilen 2: 24

Open access
Stimulatory effect of hCG on male American mink (Neovison vison) in the breeding season / Wpływ stymulacji hCG na samce norki amerykańskiej (Neovison vison) w okresie kryć

References Baran M., Udala J., Lasota B., Boryczko Z. (2003). Wirksamkeit verschiedener Brunstsynchronisationsmethoden bei Ziegen in und ausßerhalb der Reproduktionssaison. Tierärztl. Prax. Großt., 31: 93-98. Bonneau M., Meusy- Dessolle N., Léglise P.C., Claus R. (1982). Relationships between fat and plasma androstenone and plasma testosterone in fatty and lean young boars during growth and after h CGstimulation. Acta Endocrinol., 101: 119-128. Chandrasekharam V., Srinivas M., Das S.N., Jha P., Bajpai M

Open access
Royal Jelly: Chemistry, Storage and Bioactivities

Abstract

Royal jelly (RJ) has been known for centuries, but in the last 5-6 decades its systematic production and consumption has increased. RJ is secreted by the hypopharyngeal and mandibular glands of worker honeybees (Apis mellifera). This thick and milky substance contains water, proteins, carbohydrates, lipids, minerals, vitamins and such bio-active compounds as acetylcholine, peptides, the hormones testosterone, progesterone, prolactin, estradiol, (hydroxydecanoic acid) (HAD), adenosine monophosphate (AMP)-N1Oxide, polyphenols, flavonoids and adenosine. Because of its bioactive compounds, RJ can be considered as a functional and nutraceutical food. The main goal of this review is to summarize and update its physicochemical properties, bio-active ingredients, storage stability and shelf life. The functional properties are antioxidative activity, insulin-like action, improvement against diabetes, liver protection, antitumoral action, neurotrophic action, antibiotic effect, anti-inflammatory action and wound healing, hypotensive effect and blood regulatory actions, anti-aging effect and skin protection, effects on the reproductive system and fertility and also fortifying, tonic action and immunomodulating and anti-alergic activity. RJ may cause allergic reactions, asthma and even fatal anaphylaxis in some humans. Therefore, RJ should be orally ingested as nutreaceutical agent or food-ingredient only after an allergy test.

Open access
Effect of Caponisation on Bone Development in Native Male Chickens

Partridge cockerels. Ann. Anim. Sci., 15: 541–553. Charuta A., Dzierzęcka M., Biesiada-Drzazga B. (2012). Evaluation of densitometric and geometric parameters of tibiotarsal bones in turkeys. Bull. Vet. Inst. Pulawy, 56: 379–384. Charuta A., Dzierzęcka M., Komosa M., Kalinowski Ł., Pierzchała M. (2013). Age- and sex-related differences of morphometric, densitometric and geometric parameters of tibiotarsal bone in Ross broiler chickens. Folia Biologica (Krakow), 61: 211–220. Chen K.L., Chi W.T., Chiou P.W.S. (2005). Caponization and testosterone

Open access
Changes in immune parameters (lysozyme, IgM, C3) in early life stages and broodstock of Siberian sturgeon, Acipenser baerii

tilapias - J. Fish Biol. 37: 249-255. Nash J.P., Davail-Cuisset B., Bhattacharyya S., Suter H.C., Le Menn F., Kime D.E. 2000 - An enzyme linked immunosorbant assay (ELISA) for testosterone, estradiol, and 17,20â-dihydroxy-4-pregenen-3-one using acetylcholinesterase as tracer: application to measurement of diel patterns in rainbow trout (Oncorhynchus mykiss) - Fish Physiol. Biochem. 22: 355-363. Olsen Y.A., Press C.Mc.L. 1997 - Degradation kinetics of immunoglobulin in the egg, alevin and fry of Atlantic salmon, Salmo salar L, and the

Open access
Orally Administered Melatonin and the Accumulation and Toxicity of Cadmium in the Bank Vole (Myodes Glareolus)

in ghrelin-producing cells in the rat stomach. J. Endocrinol. 174 : 463-471. Satarug S., Baker J. R., Urbenjapol S., Haswell-Elkins M., Reilly P. E. B., Williams D. J., Moore M. R. 2003: A global perspective on cadmium pollution and toxicity in non-occupationally exposed population. Toxicol. Lett. 137 : 65-83. Shimada H., Bare R. M., Hochadel J. F., Waalkes M. P. 1997: Testosterone pretreatment mitigates cadmium toxicity in male C57 but not in C3H mice. Toxicology 116 : 183-191. Sogawa

Open access
Assessment of cortisol and DHEA concentrations in Griffon vulture (Gyps fulvus) feathers to evaluate its allostatic load

. (2012). Non-breeding feather concentrations of testosterone, corticosterone and cortisol are associated with subsequent survival in wild house sparrows. Proc. Biol. Sci., 279: 1560–1566. Kouwenberg A.-L., Mark Hipfner J., McKay D.W., Storey A.E. (2013). Corticosterone and stable isotopes in feathers predict egg size in Atlantic Puffins Fratercula arctica . Ibis, 155: 413–418. Kroboth P.D., Salek F.S., Pittenger A.L., Fabian T.J., Frye R.F. (1999). DHEA and DHEA-S: a review. J. Clin. Pharmacol., 39: 327–348. Labrie F., Luu-The V., Martel C

Open access
Can roosters′ head ornaments serve as a criterion for their selection as a valuable reproducers?

References Balthazart J., Hirschberg D. (1979). Testosterone metabolism and sexual behavior in the chick. Horm. Behav., 12: 253-263. Bilcik B., Estevez I. (2005). Impact of male-male competition and morphological traits on mating strategies and reproductive success in broiler breeders. Appl. Anim. Behav. Sci., 92: 307-323. Bilcik B., Estevez I., Russek - Cohen E. (2005). Reproductive success of broiler breeders in natural mating systems: The effect of male-male competition, sperm quality, and morphological

Open access