Searchable, peer-reviewed, open-access proceedings from bioscience and biomedical conferences
Previous issue | Volume 18 | CPR2009 | Next issue

Control of Pig Reproduction VIII

Control of Pig Reproduction VIII

Physiological Roles of The Boar Ejaculate

bp0018cpr1 | Physiological Roles of The Boar Ejaculate | CPR2009

The physiological roles of the boar ejaculate

Rodriguez-Martinez H. , Kvist U. , Saravia F. , Wallgren M. , Johannissono A. , Sanz L. , Pena F.J. , Martinez E.A. , Roca J. , Vazquez J.M. , Calvete J.J.

During ejaculation in the boar, sperm cohorts emitted in epididymal cauda fluid are sequentially exposed and resuspended in different mixtures of accessory sex gland secretion. This paper reviews the relevance of such unevenly composed fractions of seminal plasma (SP) in vivo on sperm transport and sperm function and how this knowledge could benefit boar semen processing for artificial insemination (Al). The firstly ejaculated spermatozoa (first 10 ml of the spe...

bp0018cpr2 | Physiological Roles of The Boar Ejaculate | CPR2009

Molecular kinetics of proteins at the surface of porcine sperm before and during fertilization

Tsai P.S. , Gadella B.M.

Fertilization is a decisive moment in life and enables the combination of the DNA from two gametes to ultimately form a new organism. The sperm surface, especially the head area, has distinguishable subdomains that are involved in distinct fertilization processes. It is known that the sperm head surface undergoes constant remodelling during epididymal maturation and migration in the male and female genital tract. But intriguingly, the identity, origin and spatial orderin...

bp0018cpr3 | Physiological Roles of The Boar Ejaculate | CPR2009

Optimal characteristics of spermatozoa for semen technologies in pigs

Parrilla I. , Vazquez J.M. , Caballero I. , Gil M.A. , Hernandez M , Roca J. , Lucas X. , Martinez E.A.

Despite the great potential of sperm technologies such as sperm cryopreservation and sperm sex sorting for the improvement of different aspects of swine production, artificial insemination with fresh or stored semen is currently the only sperm technology used at a commercial scale in the pig industry. The lower reproductive performance associated with the use of these sperm technologies is the reason for such limited use. Since optimal characteristics are required for su...

bp0018cpr4 | Physiological Roles of The Boar Ejaculate | CPR2009

Recent advances in boar semen cryopreservation

Rath D. , Bathgate R. , Rodriguez-Martinez H. , Roca J. , Strzezek J. , Waberski D.

Since 35 years ago boar semen has been frozen and used for artificial insemination (Al). However, fertility of cryopreserved porcine sperm has consistently been low as boar sperm are more sensitive to cellular stress imposed by changing osmotic balance, oxidative stress, low-temperature exposure, cryo-protectant intoxication etc. and are less able to compensate for these deficiencies at commercially applicable dosages. Additionally, differences in sperm freezability amon...