Semen from 10 932 male partners of infertile couples was analysed and sperm parameter trends were evaluated at the Reproduction Biology Laboratory of the University Hospital of Marseille (France) between 1988 and 2007. After 3-6 days of abstinence, semen samples were collected. Measurements of seminal fluid volume, pH, sperm concentration, total sperm count, motility and detailed morphology of ...

The study was conducted to detect haptoglobin in seminal plasma (SP-Hp) of Awassi rams and the effect of the breeding season on its concentration, along with determining the correlation with its concentration in serum (S-Hp) and main semen variables. Pre-warmed artificial vagina was used to collect semen samples biweekly from five Awassi rams. Semen samples were evaluated for volume, concentrat...

The research work was conducted in District Artificial Insemination (AI) Center, Daulatpur, Khulna and Animal Biotechnology Laboratory, Khulna University, Khulna from July, 2010 to January, 2012. Semen was collected from 3 genetic groups of bulls from the AI center. Five frozen semen ampoules (1/4 Local x3/4 Friesian) was also used in this experiment. After collection, semen was observed to eva...

Semen quality is a key indicator of the male reproductive ability. The decline in semen quality has been debated for several decades. However, data on decline in semen quality might be inconsistent given factors such as geographical area, ethnicity, environmental exposure and lifestyle changes. This study aimed to provide information on the semen quality of men in Northern Taiwanese. We recruit...

The season may affect the values of fresh semen variables and therefore influence the success of cryopreservation. The aim of this study was to improve the evaluation of seasonal changes in semen quality in Spanish Black Castellana roosters maintained under natural environmental conditions. Semen was collected from 11 Black Castellana roosters (housed under natural photoperiod and temperature c...

The objective of the present study was to estimate heritabilities and genetic correlations for semen and litter size traits using full animal model analyses. Litter size data were available from 28,485 Czech Large White and 10,410 Czech Landrace sows farrowing between 1995 and 2008. The number of litter records was 91,922 and 30,937, respectively. Records on semen traits (37,137 ejaculates from...

the main purpose of this study was to evaluate the influence of the photoperiod on the seminal traits of crossbreed wool-producing rams throughout on year period. for the effect of photoperiod two periods were considered: decreasing daylight length (summer and autumn) and increasing daylight length (winter and spring). for the study 5 baluchi × moghani (bl×mg) and 5 arkharmerino × moghani (am×m...

BACKGROUND The purpose of this study was to analyse the effect of a history of febrile illness on semen quality. METHODS Twenty-seven healthy men (median age 24.4 years) were followed with monthly semen samples and a daily record of the occurrence of experienced febrile episodes over a 16 month period between March 1998 and June 1999 in Copenhagen, Denmark. Semen samples were analysed for sem...

Studies were conducted to characterize the effect of season of the year on testicular morphology, fresh and frozen/thawed semen quality from Curraleiro (Pé-duro) bulls in the Brazilian Central west region. Five adult, healthy bulls underwent an andrological examination and semen collection using an electroejaculator, once a month for a year. Fresh and thawed semen were evaluated for progressive...