The frequency of insemination in hens affects the costs associated with artificial insemination in poultry. A reduced frequency implies a larger insemination interval and therefore a reduction in costs. The objective of the study was therefore to assess the effect of insemination intervals on...

For the past 50 yr, practices for ex situ preservation of endangered breeds have been extended. Semen and primordial germ cells, gonadic tissues have been frozen to create genetic stocks of chicken genetic diversity in cryobanks. Semen cryopreservation stays the preferred method since it is not...

The aim of the present study was the establishment of an effective protocol for cryopreservation of psittacine semen. Therefore, pooled semen samples of 30 cockatiels (Nymphicus hollandicus) were diluted with modified Lake diluent (1:4), partitioned into four equal parts. Three portions were mixed...

Artificial insemination is commonly used in breeder farms to stabilize fertility. Hens are able to store sperm for a long time and remain fertile, so that they can extend the chicken insemination interval, and thus achieve better economic benefits. In this paper, dwarf brown-shell laying hens were...

Guinea fowl hens were inseminated weekly once with two doses of spermatozoa (75 million and 100 million) in two different diluents, Beltsville poultry semen extender (BPSE), and Instruments for Veterinary Medicine (IMV), each with and without pre-insemination vaginal douching. Per cent fertility,...

Morphological characteristics of turkey Meleagris gallopavo semen were recorded and hatchability percentages of the artificially inseminated hens were assessed. To study the effect of natural mating on hatchability 15 (3♂, 12♀) M. gallopavo were randomly selected, were kept separately and were...

The generation of transgenic chickens is of both biomedical and agricultural significance, and recently chicken transgenesis technology has been greatly advanced. However, major issues still exist in the efficient production of transgenic chickens. This study was designed to optimize the production ...

This study was carried out to determine the effect of supplementing the semen extender with calcitriol on in vitro sperm characteristics in Chukar partridges. A total of 60 male Chukar partridges were habituated for semen collection by abdominal massage. Pooled ejaculates from several males were...

Collection and evaluation of semen are the first critical steps for examination of male fertility, gamete preservation and development of artificial insemination technology in ducks. Induced teaser method and manual massage method of semen collection were evaluated for the ease and reaction time in ...

The fertilizing capacity of pure, fresh avian semen may disappear in just half an hour, hindering its successful use in artificial insemination (AI) projects. Longer storage requires the use of infra-physiological temperatures and of semen diluents that help preserve the spermatozoa but that do not ...