A 12-generation selection experiment involving a selected line (S) and a control line (C) has been conducted since 1992 with the aim of increasing the number of fertile eggs laid by the Brown Tsaiya duck after a single artificial insemination (AI) with pooled Muscovy semen. On average, 28.9% of the females and 17.05% of the males were selected. The selection responses and the predicted responses showed similar trends. The average predicted genetic responses per generation in genetic standard deviation units were 0.40 for the number of fertile eggs, 0.45 for the maximum duration of fertility, and 0.32 for the number of hatched mule ducklings' traits. The fertility rates for days 2-8 after AI were 89.14% in the S line and 61.46% in the C line. Embryo viability was not impaired by this selection. The largest increase in fertility rate per day after a single AI was observed from d5 to d11. In G12, the fertility rate in the selected line was 91% at d2, 94% at d3, 92% at days 3 and 4 then decreased to 81% at d8, 75% at d9, 58% at d10 and 42% at d11. In contrast, the fertility rate in the control line showed an abrupt decrease from d4 (74%). The same tendencies were observed for the evolution of hatchability according to the egg set rates. It was concluded that selection for the number of fertile eggs after a single AI with pooled Muscovy semen could effectively increase the duration of the fertile period in ducks and that research should now be focused on ways to improve the viability of the hybrid mule duck embryo.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2674413 | PMC |
| http://dx.doi.org/10.1186/1297-9686-41-32 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Current status of fertility preservation procedures in gynecologic oncology: from a Chinese perspective.
J Assist Reprod Genet
January 2025
Department of Gynaecology, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Liaoning Province, Shenyang, 110001, The People's Republic of China.
Background: The "Healthy China" initiative, along with advancements in technology for cancer diagnosis and treatment, has significantly enhanced outcomes for patients with gynecologic tumors. The trends of late marriage and delayed childbirth have led to an increasing number of women diagnosed with gynecologic cancers who are seeking fertility preservation in China. This issue is critical yet often overlooked in clinical practice.
View Article and Find Full Text PDFA Real-World Prospective Multiple Sclerosis Pregnancy Registry in the United States: PREG-MS.
Neurol Clin Pract
April 2025
Brigham MS Center (MKH), Harvard Medical School, Boston, MA; Georgia State University (MCM), Atlanta; Brigham and Women's Hospital (TDM, JP-P, CS, JZ), Boston, MA; Massachusetts General Hospital (ECK), Harvard Medical School, Boston, MA; University of Vermont (AJS), Burlington; Elliot Lewis MS Center (EL, JK), Wellesley, MA; University of Massachusetts (CI, IB), Worcester, MA; Novartis Pharmaceuticals (JMS), Jersey City, NJ; Concord Hospital (AC), NH; and University of British Columbia (ADS), Vancouver, BC, Canada.
Background And Objectives: Multiple sclerosis (MS) affects more than 1 million people in the United States, including reproductive-age women. There has been a paucity of prospective, pregnancy registries based on MS disease rather than medication exposures. A prospective MS pregnancy registry (PREG-MS) was established in 2017 as a prospective, single-cohort, real-world MS pregnancy registry in New England States of the United States, with goals to evaluate (1) course of MS and disease-modifying therapies (DMT) use during conception attempts and in the peripartum period, (2) pregnancy outcomes in women with MS (WwMS), and (3) longer-term developmental outcomes in offspring of WwMS.
View Article and Find Full Text PDFOviposition-deterrent activity of p-methyl benzaldehyde and 2-hydroxy-5-methoxybenzaldehyde from the extract of Periplocae cortex for the control of Spodoptera frugiperda.
Pest Manag Sci
January 2025
Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture and Rural Affairs, Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences, Wuhan, China.
Background: The invasion of Spodoptera frugiperda into China has caused serious losses to the food industry and has developed varying degrees of resistance to various chemical pesticides. Developing new plant-based pesticides is of great significance for the sustainable management of S. frugiperda.
View Article and Find Full Text PDFHigh-risk fertility behavior and associated factors among mothers attending antenatal care at public health facilities in Hossana Town, Central Ethiopia Region: facility based cross sectional study.
BMC Pregnancy Childbirth
January 2025
School of Public Health, College of Medicine and Health Sciences, Wachemo University, Hossana, Ethiopia.
Background: High-risk fertility behavior (HRFB) is a serious public health issue that may influence the country's economic development as well as the health status of mothers mainly in developing countries, like Ethiopia.However, there is a scarcity of evidence about HRFB and associated factors in the study area. Therefore, this study assessed HRFB and associated factors among mothers attending antenatal care in public health facilities in Hossana town, Hadiya zone, Central Ethiopia Region.
View Article and Find Full Text PDFThe smallest plant from the Lower Devonian of South China and the divergent life-history strategies in zosterophyllopsids.
Proc Biol Sci
January 2025
The Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing 100871, People's Republic of China.
Plants have evolved different life-history strategies to overcome limited amounts of available resources; however, when and how divergent strategies of sexual reproduction evolved in early land plants are not well understood. As one of the notable and vital components of early terrestrial vegetation, the Zosterophyllopsida and its type genus reached maximum species diversity during the Pragian (Early Devonian; 410.8-407.
View Article and Find Full Text PDFWant 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!