Article
Biodiversity Conservation
Ronald L. Sandler, Lisa Moses, Samantha M. Wisely
Summary: Genetic rescue is a tool for managing genetic load and enhancing fitness by introducing unique genomes into populations. Biobanks provide a potential source of cryopreserved material, such as fibroblasts, which may require cloning. Ethical analysis is essential to determine the justification for cloning and address related issues responsibly. An ethical framework is provided for conservation cloning, with a case study on using cloning for genetic rescue in black-footed ferret recovery efforts.
BIOLOGICAL CONSERVATION
(2021)
Article
Obstetrics & Gynecology
P. A. L. Kop, M. van Wely, A. Nap, A. T. Soufan, A. A. de Melker, B. W. J. Mol, R. E. Bernardus, M. De Brucker, P. M. W. Janssens, J. J. P. M. Pieters, S. Repping, F. van der Veen, M. H. Mochtar
Summary: This study compared the effectiveness of intracervical insemination (ICI) and intrauterine insemination (IUI) with cryopreserved donor sperm in the natural cycle, and found that IUI had a higher live birth rate than ICI.
HUMAN REPRODUCTION
(2022)
Article
Reproductive Biology
P. Taaffe, C. M. O'Meara, M. Stiavnicka, C. J. Byrne, B. Eivers, P. Lonergan, S. Fair
Summary: This study aimed to assess the effect of ejaculate collection frequency on semen output, sperm quality, and field fertility in young bulls. The results showed that collecting ejaculates more frequently significantly reduced the number of days required to obtain 1000 straws, increased semen quality in terms of lower superoxide production, and improved field fertility.
Article
Agriculture, Dairy & Animal Science
Tyler Antonelli, Carissa L. Leischner, Adam Hartstone-Rose
Summary: The black-footed ferret, a North American mustelid species, faced near-extinction due to the decline in prairie dogs, their primary food source. The Black-Footed Ferret Recovery Program was established to breed the species in captivity and reintroduce them into the wild. However, the captive diet caused significant dental and cranial issues.
Article
Agriculture, Dairy & Animal Science
K. Brady, K. Krasnec, J. A. Long
Summary: In this study, RNA sequencing and differential expression analysis of sperm storage tubules in the uterovaginal junction of hens revealed their functional mechanisms and regulatory pathways during early, peak, and late egg production. The findings provide a theoretical basis for the development of industry-standard protocols for semen storage and cryopreservation.
Article
Cell Biology
Maria de las Mercedes Carro, Rafael R. A. Ramirez-Vasquez, Daniel A. Penalva, Jorgelina Buschiazzo, Federico A. Hozbor
Summary: The study indicates that increasing the cholesterol and desmosterol content of ram sperm before cryopreservation can improve sperm quality and stabilize acrosome integrity, reduce acrosome damage, enhance fertilization rates, and decrease pregnancy risks.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Reproductive Biology
Dong Li, Wenyu Zhang, Xuekai Tian, Yulin He, Zitong Xiao, Xin Zhao, Lin Fan, Renrang Du, Gongshe Yang, Taiyong Yu
Summary: Artificial insemination (AI) is a proven breeding technology widely used in pig reproduction, but low temperature can affect sperm quality. Adding hydroxytyrosol helps improve sperm quality and antioxidant capacity.
Article
Reproductive Biology
Gyongyi Gazsi, Ian A. E. Butts, Vahid Zadmajid, Bence Ivanovics, Luca Ruffilli, Bela Urbanyi, Zsolt Csenki, Tamas Muller
Summary: Reproductive obstacles have prompted the development of novel artificial reproduction techniques. The experiment showed that injecting sperm into the ovarian lobes of zebrafish females can increase egg production, regardless of the presence of male stimulus. Additionally, traditional spawning methods and insemination with sperm from transgenic males in the presence of male stimulus were found to further enhance egg production.
Article
Agriculture, Dairy & Animal Science
Muhammad Shabir Shaheen, Shahid Mehmood, Athar Mahmud, Amjad Riaz, Sohail Ahmad
Summary: The study found that caged broiler breeders showed better reproductive performance during artificial insemination, especially in terms of egg production and hatchability across different concentrations and insemination frequencies.
Article
Agriculture, Dairy & Animal Science
Alicja Kowalczyk, Elzbieta Galeska, Anna Bubel
Summary: This study demonstrates that the addition of Holothuroidea extract to the semen extender improves the quality of sperm after the freezing process, and the proAKAP4 biomarker can be used to evaluate the effectiveness of various extenders for semen cryopreservation.
Article
Agriculture, Dairy & Animal Science
Ilke Unlusoy
Summary: Semen importing countries face the risk of losing genetic diversity due to the widespread use of common genetic material. This study evaluated the genetic diversity of high-yielding Holstein stud bulls from Turkiye, Europe, and the Americas. The results showed a decrease in certain genetic diversity indicators compared to previous studies, particularly for the SPS115 locus. This suggests potential selection pressure on traits associated with the SPS115 locus.
ANIMAL BIOTECHNOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Ilias Michos, Maria Tsantarliotou, Constantin M. Boscos, Georgios Tsousis, Athina Basioura, Eleni D. Tzika, Panagiotis D. Tassis, Aristotelis G. Lymberopoulos, Ioannis A. Tsakmakidis
Summary: The study evaluated the relationship between boar sperm characteristics and sperm/seminal plasma proteins with main parameters of field fertility in swine. It found that immotile sperm and sperm with biochemically active plasma membranes influenced the number of live-born piglets and litter size of >= 12 piglets. Specific proteins like osteopontin 70 and glutathione peroxidase 5 were also found to affect farrowing rate and fertility when combined with certain sperm characteristics. The evaluation of semen quality variables combined with specific sperm or seminal plasma proteins could provide useful information on in vivo fertilizing capacity of semen doses.
Article
Agriculture, Dairy & Animal Science
Vibuntita Chankitisakul, Wuttigrai Boonkum, Theerapat Kaewkanha, Maruay Pimprasert, Ruthaiporn Ratchamak, Supakorn Authaida, Pachara Thananurak
Summary: The study found that the NCAB semen extender supplemented with serine and stored at a low temperature (5 degrees C) significantly improved rooster sperm quality and fertilizing ability, achieving higher fertility and hatchability rates compared to other extenders during storage.
Review
Agriculture, Dairy & Animal Science
A. H. M. Musleh Uddin, Kiro R. Petrovski, Yunmei Song, Sanjay Garg, Roy N. Kirkwood
Summary: Optimal fertility in food-producing animals can be achieved by using exogenous GnRH and agonists to control ovulation timing and promote reproductive success. GnRH administration is used to counter ovarian dysfunction, induce ovulation, and increase conception and pregnancy rates in animals. Exogenous GnRH products are commonly used in pre- and post-breeding programs to enhance fertility and treat reproductive morbidities.
Review
Agriculture, Dairy & Animal Science
Aleksandar Cojkic, Jane M. Morrell
Summary: In the past 70 years, the bull semen industry has focused on maximizing reproduction efficiency, but the impact of animal welfare on bull productivity has not been taken into consideration. Bull welfare is important because stress can affect reproductive parameters and performance, as well as the onset of puberty and overall health. Protocols for bull welfare assessment in artificial insemination centers are lacking, and there is a need for early indicators of welfare problems to prevent long-term effects. Animal welfare has implications for the meat and milk industry, human health, and the environment. This review evaluates welfare quality assessment for bulls, with a focus on stress and its effects on fertility.