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84 articles for “reproduction”
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Research ArticleOpen accessIn the keywordsAssessing the Toxic Effects of Topik80ec on Rabbit Testicular Morphometry and HistologySamia Rebahi, Alouani Abdelouahab, Meguini Mohamed Nadir et al.This study aimed to investigate the toxic impact of Topik80ec on rabbit testes through morphometric and histological analyses. Twenty-four adult male domestic rabbits (Oryctolagus cuniculus) were used, where three experimental groups, G1, G2, and G3, were assigned and provided escalating dosages of Topik80 EC for a duration of four weeks, while one group served as the control group and received … …OnLine Journal of Biological Sciences, Vol. 25, Issue 1 · 14 Sep 2024 · 5,015 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOxidative Stress and Reproductive Damage Induced by Lead Acetate in Female Guinea Pig (Cavia porcellus): Curative Effects of Hydroethanolic Extract of Spirulina platensisDeutcheu Nienga Sorelle, Ngoula Ferdinand, Manfo Tsague Faustin Pascal et al.This study was aimed at evaluating the curative effects of Hydroethanolic Extract Of Spirulina platensis (HESP) on the reproductive function of female Guinea pig exposed to oxidative stress. Sixty females, 3-4 months old, weighing 300-400 g were divided into six groups (10 animals/group). The neutral control received distilled water, the negative control was treated with lead acetate at a dose … …American Journal of Animal and Veterinary Sciences, Vol. 14, Issue 1 · 8 Apr 2019 · 7,422 accessesView PDFCite
InvestigationOpen accessIn the keywordsProductive and Biological Features of Kazakh Fine-Wool Sheep in the Conditions of the Almaty RegionKairat Alimgozhaevich Iskakov, Beibit Turganbekovich Kulatayev, Gulshad Makhambetovna Zhumagaliyeva, Pere Miquel Pares CasanovaKazakh fine-wool sheep bred in semiarid and desert zones of the Kazakhstan South-East are most widely spread in the Republic. However, most sheep do not satisfy the respective requirements of the breed in terms of productivity and especially reproductive capacity. Consequently, increasing the breeding performance and yield of commercial lambs is one of the most urgent issues in fine-wool sheep … …OnLine Journal of Biological Sciences, Vol. 17, Issue 3 · 7 Aug 2017 · 8,261 accessesView PDFCite
Research ArticleOpen accessIn the keywordsWhat is Missing in STD Screening in Hong Kong?Clement Leung-Kwok Chan, Wai Yee Chan, Christopher Hon Ki Cheng, Ping XiaThis retrospective analysis was to study the prevalence of Sexually Transmitted Diseases (STD) in a Reproductive Medical Center in Hong Kong. A total of 1190 patients were included in this study. Group 1A, couples had no symptoms but presented with subinfertility; Group 1B, the subfertile couples were positive for either Chlamydia trachomatis (CT) or Ureaplasma urealyticum (UU); Group 2, couples … …Current Research in Medicine, Vol. 7, Issue 2 · 11 Jan 2017 · 8,407 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEFFECT OF PUERPERAL METRITIS ON HOLSTEIN COWS PRODUCTIVE, REPRODUCTIVE VARIABLES AND CULLING RATESA. Dawod, Byeng R. MinThe objective of the study was to determine the effect of puerperal metritis prevalence in high yielding Holstein cows on productive (305 days, actual milk yields), reproductive (days to first estrus, days open and services per conception) variables and culling rates. Throughout the study, 2885 dairy records were collected from high yielding private Holstein dairy farm (average milk yield was … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 3 · 12 Nov 2014 · 6,950 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAPPROXIMATION OF ESTIMATES IN THE SUSCEPTIBLE-INFECTIOUS-REMOVED EPIDEMIC MODELChanghyuck OhIn this note, a simple approximation for the maximum likelihood estimates of infection and removal parameters used in the Susceptible-Infectious-Removed (SIR) epidemic model is presented. This approximation can be applied when the numbers of susceptible and infected individuals are observable only at discrete points in time. Since, in such cases, a closed form of the likelihood function is generally too … …Journal of Mathematics and Statistics, Vol. 9, Issue 1 · 21 Mar 2013 · 6,760 accessesView PDFCite
Research ArticleOpen accessIn the keywordsUse of Cooled Bull Semen as a Strategy to Increase the Prenancy Rate in Fixed-Time Artificial Insemination Prgrams-Case ReportAndre Maciel Crespilho, Frederico Ozanam Papa, Marcos de Paula Santos, Manoel Francisco de Sa FilhoSemen cryopreservation is still considered suboptimal due to lower fertility when compared to fresh semen. The reasons for the loss of fertility are various and related to irreversible damage caused to the cells during the freeze-thaw process. An alternative to conventional cryopreservation represents the use of chilled bull semen, preventing the damage associated with freezing, thereby guaranteeing greater sperm viability. … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 4 · 2 Feb 2013 · 8,681 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMathematical Analysis of the Non Linear Epidemic ModelLaid Chahrazed-Rahmani Fouad LazharClassical epidemic models assume that the size of the total population is constant. More recent models consider a population size variable to take into account a longer period with death and disease causing reduced reproductive. The model contains a disease-free equilibrium and one or multiple equilibria are endemic. The stability of a disease-free status equilibrium and the existence of other … …Journal of Mathematics and Statistics, Vol. 8, Issue 2 · 19 Jun 2012 · 7,170 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Reproductive Tract of the Males of the Zoophytophagous Predator Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) with Different Diets and AgesWalkymario de Paulo Lemos, Rafael Coelho Ribeiro, Francisco de Sousa Ramalho et al.Abstract: Problem statement: Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) is a common and important species for the biological control of defoliating Lepidoptera caterpillars. Although it has a predatory feeding habit, this species make use of plant resources, which are essential for the maintenance of its population in laboratory colonies as well as in the field during periods of prey shortage. Thus … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 1 · 15 Dec 2010 · 8,419 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving the Technology for Assessing the Semen of Beige Karakul SheepAigerim Turekyzy Bigarayeva, Nuradin Alibayev, Arkadiy Kanurovich Natyrov et al.The article presents the research results on the effective use of seed products from breeding rams in reproduction for the conservation and targeted propagation of genetic resources of Karakul sheep of rare beige color, which are on the verge of extinction. Selected freshly obtained ejaculates from 6 beige rams of the Karakul breed in the amount of 32 samples, meeting … …OnLine Journal of Biological Sciences, Vol. 25, Issue 1 · 17 Feb 2025 · 4,501 accessesView PDFCite