The experimental material comprised 7 ostrich families (7 males and 14 females) of which five families were at the age of 7 and two at the age of 5 years. In the course of the entire reproductive season, the following parameters were analysed: length of the laying period, mean laying rate, number of eggs laid by one female, proportion ofhatching eggs, egg weight and shape, egg weight lost during incubation, egg fertilisation, percentage of dead embryos and unhatched chicks, hatchability from fertilised and set eggs. Seven year-old ostriches were characterised by shorter laying period (134 days) but, at the same time, by higher proportions of hatching eggs. This group was also characterised by high egg fertilisation (79.7%) as well as high hatchability indices at simultaneous highest embryo mortality during incubation (11.6 %). Five year-old ostriches exhibited a longer laying period (175 days) during which females laid more eggs (49 pcs.). In addition, this group was characterised by a smaller proportion of hatching eggs, better egg fertilisation indices (83.5%) and hatchability results. Moreover, the determined higher egg shape index indicates that the 5 year-old females laid eggs which were more spherical. Recapitulating, the obtained results indicate that, under Polish conditions, better indices of laying performance, egg fertilisation and hatchability were observed in the group of 5 year-old ostriches.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3409/fb59_3-4.163-167 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optimal aspiration pressure of suction pump for oocyte retrieval in infertile patients undergoing in vitro fertilization.
PLoS One
January 2025
Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea.
Background: The oocyte retrieval is a critical step in assisted reproductive technologies, including in vitro fertilization and fertility preservation. Despite evolving techniques, the optimal aspiration pressure during retrieval remains debatable, with limited in vivo human studies. Existing studies, primarily in vitro and on animals, suggest that inappropriate aspiration pressures can impair oocyte quality.
View Article and Find Full Text PDFubiquitin ligase regulates dichotomous spermatogenesis in .
Front Cell Dev Biol
January 2025
Hubei Key Laboratory of Insect Resources Utilization and Sustainable Pest Management, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China.
Spermatogenesis in Lepidoptera holds significant importance due to its unique process of dichotomous spermatogenesis, yielding eupyrene and apyrene spermatozoa through a complex molecular mechanism. While E3 ubiquitin ligases are known to play vital roles in spermatogenesis across various processes, their functions in dichotomous spermatogenesis remain less known. We utilized the RNAi, biochemical and microscopic procedures to unravel the function of in dichotomous spermatogenesis of adult .
View Article and Find Full Text PDFOutcomes of antibiotic therapy and transvaginal ultrasound-guided efficacy of transvaginal ultrasound-guided drainage in treating tubo-ovarian abscesses: Three case reports.
Int J Reprod Biomed
November 2024
Clinical Research Developement Center, Mahdiyeh Educational Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Background: To introduce minimally invasive methods for the successful treatment of tubo-ovarian abscesses (TOAs), an antibiotic regimen was considered the first line of treatment. However, in some cases, this approach fails, and another intervention (laparotomy or minimally guidance drainage) is required.
Case Presentations: 3 women with a history of long-time infertility, all of them were candidates for in vitro fertilization referred to the obstetrics and gynecology department with similar manifestations.
Biallelic mutations in CDC20 cause female infertility due to oocyte maturation abnormality.
Gynecol Endocrinol
December 2025
Department of Reproductive Medicine, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China.
Oocyte maturation arrest (OMA) may occur at different stages, including the germinal vesicle (GV), metaphase I (MI), and metaphase II (MII). A total maturation arrest of human oocytes is rarely observed during fertilization (IVF). We have identified a case of infertile female for whom all oocytes fail to mature and are arrested at MI.
View Article and Find Full Text PDFMonocyte and Macrophage in Follicular Liquid: Predictive Markers of Embryo Quality in Women with Obesity and Infertility.
Front Biosci (Landmark Ed)
January 2025
Division of Biochemistry and Molecular Biology, Federal State Budgetary Educational Institution of Higher Education "Siberian State Medical University" of the Ministry of Health of Russia, 634050 Tomsk, Russia.
Background: Over the past five years, the pregnancy rate in assisted reproductive technology (ART) programs in Russia has remained relatively stable. The aim of this study was to assess the distribution of monocyte and macrophage subsets in the blood and follicular fluid of infertile women undergoing assisted reproductive technology.
Methods: The study involved 45 women with a mean age of 35 ± 4.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!