Results 91 to 100 of about 71,592 (282)

Tipping the Scales Using Cryopreservation: Modelling the Genetic Value and Management Potential of Integrated Cryopreservation for Threatened Ex‐Situ Pupfish Populations

open access: yesAnimal Conservation, EarlyView.
This graphical abstract depicts the number of additional fish that would be required to achieve 90% genetic diversity for endangered pupfish species housed in EAZA collections, with or without the use of cryopreserved material. ABSTRACT Zoos and aquaria must retain genetic diversity for the species they house if the populations are to remain viable ...
James Edward Brereton   +5 more
wiley   +1 more source

The efficiency of laparoscopic artificial insemination in lacunae ewes followed by two different methods of estrous synchronization

open access: yes, 2020
Reproduction biotechnology of small ruminants differs from other species mainly because of their anatomical features. The Lacaune dairy breed has evolved from a low-yield, dual-purpose breed to a high-yield breed over the past few decades while ...
Aamir, Muhammad
core  

The Effects of Different Cryoprotectants on Stallion Epididymal Spermatozoa [PDF]

open access: yes, 2011
Any event that makes semen collection or mating impossible, such as death, castration, or injury, may terminate a stallion’s breeding career. Fortunately, stallion sperm which are capable of fertilization can be harvested from a region adjacent to the ...
Beattie, Cleo
core  

Loss‐of‐Function Variants in CCDC189 Cause Human Oligoasthenoteratozoospermia by Disrupting Sperm Flagellar and Acrosomal Architecture

open access: yesAndrology, EarlyView.
ABSTRACT Background Oligoasthenoteratozoospermia (OAT), characterized by reduced sperm count, impaired motility, and abnormal morphology, is a major cause of male infertility with substantial genetic heterogeneity. However, the underlying genetic etiology remains unresolved in a large proportion of affected individuals.
Jianteng Zhou   +8 more
wiley   +1 more source

Improving ARTs: Microfluidics as a Tool for Sperm Selection

open access: yesAndrology, EarlyView.
ABSTRACT Sperm selection is a critical step in assisted reproductive technology (ART), as sperm quality directly influences embryo quality. In vivo, the female reproductive tract imposes several physical and physiological barriers that favors only the most optimal spermatozoa reaching the fertilization site.
A. Pérez‐Gómez   +7 more
wiley   +1 more source

Artificial Insemination of Swine [PDF]

open access: yes, 2000
Enhancing physiological processes and reducing production costs associated with mating are key considerations for optimizing swine breeding herd management.
Clapper, Jeff
core   +1 more source

Sperm Selection Using Micro Swim‐Up: Improvement of Chromatin Integrity Compared to Density Gradient Centrifugation

open access: yesAndrology, EarlyView.
ABSTRACT Background Selecting high‐quality spermatozoa with optimal nuclear integrity is a crucial step in assisted reproductive technologies (ART). While density gradient centrifugation (DGC) is widely used, the associated centrifugation steps may induce cell stress, potentially damaging sperm DNA.
Simone Palini   +7 more
wiley   +1 more source

Intraperitoneal Insemination of the Heifer.

open access: yesExperimental Biology and Medicine, 1957
SummaryIntraperitoneal insemination of 4 heifers a total of 6 times resulted in one pregnancy. This experimental method is offered as a means of studying the physiological processes leading to fertilization.
L E, McDONALD, J, SAMPSON
openaire   +2 more sources

Associations Between Sperm DNA Fragmentation and Lifestyle Factors

open access: yesAndrology, EarlyView.
ABSTRACT Background Sperm DNA fragmentation index (DFI) has been proposed as a supplementary biomarker to traditional semen parameters in the evaluation of male infertility. However, its determinants and clinical relevance remain unclear, particularly regarding modifiable lifestyle factors.
Lana Haval Mairof Adams   +7 more
wiley   +1 more source

Daśaratha’s Horse Sacrifice in the Rāmāyaṇa

open access: yesOrientalia Suecana, 2020
This article discusses Daśaratha’s horse sacrifice at 1.8–16 in Vālmīki’s Rāmāyaṇa. Daśaratha’s rite seems to be a horse sacrifice, then a son-producing rite, then a porridge-eating rite.
Simon Brodbeck
doaj  

Home - About - Disclaimer - Privacy