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Studies on Boar Semen

III. Sperm Concentration and Seminal Plasma Total Solids Followed in Danish Ai Boars Through a 10-Year-Period

Spermiekoncentration og tørstofindhold i spermaplasma undersøgt hos danske AI orner gennem en 10-årig periode.

Acta Veterinaria Scandinavica volume 25, pages 107–112 (1984)Cite this article

Abstract

Semen samples from 1531 young boars eligible for AI service were examined for normality. Sperm concentration (s.c.) was determined by the hemocytometer technique in 1348 of the samples. Seminal plasma total solids (t.s.) were determined on all samples in order to control whether the semen samples originated from complete ejaculates.

The hemocytometer counts showed an arithmetic mean of 370 × 106/ml with a standard deviation of 188×106/ml. No correlation was found either between s.c. and age or between s.c. and season of the year.

The seminal plasma t.s. showed an arithmetic mean of 4.6% with a standard deviation of 1.35%. No correlation was found between t.s. and s.c. or between t.s. and the age of the boars. Neither was there any association between t.s. and the season of the year.

Values of t.s. below 1.6% combined with aspermia were regarded as the result of incomplete ejaculations and the following retest from such cases gave ejaculates showing normal values concerning s.c. and t.s. A drop in t.s. combined with an admixture of pathological cells to the ejaculate may indicate an inflammatory condition in the vesicular glands.

Sammendrag

Sædprøver fra 1531 unge orner, der stod for at skulle anvendes til kunstig sædoverføring, indgik i undersøgelsen. Spermiekoncentrationen (s.k.) blev målt ved hjælp af hæmocytometer på 1348 af prøverne. Tørstofindholdet i spermaplasma (t.s.) blev målt med Refraktometer på alle prøverne bl. a. for at man kunne sondere mellem fuldstændige og ufuldstændige ejakulater.

Hæmocytometertællingen viste et aritmetisk middeltal på 370×106 spermier/ml med en spredning på 188×106/ml. Der blev ikke påvist nogen korrelation mellem s.k. og ornernes alder eller mellem s.k. og årstid.

Tørstofindholdet viste et aritmetisk middeltal på 4,6 % med en spredning på 1,35 %. Der kunne ikke vises nogen korrelation mellem t.s. og s.c. eller mellem t.s. og ornernes alder. Der fandtes heller ingen relation mellem t.s. og årstiden.

De meget sjældne t.s. værdier under 1,6 % fandtes altid sammen med aspermi og blev betragtet som resultater af en ufuldstændig ejakulation. De i disse tilfælde rekvirerede omprøver viste da også ejakulater med normale værdier for s.k. og t.s. En nedgang i t.s. i forbindelse med tilblanding af pusceller til ejakulatet blev tolket som et tegn på betændelsestilstand i gll. vesiculares i lighed med, hvad der er påvist for tyrens vedkommende.

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  1. State Veterinary Serum Laboratory, Copenhagen, Denmark

    Erik Blom & Poul Thode Jensen

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  1. Erik Blom
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  2. Poul Thode Jensen
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Blom, E., Jensen, P.T. Studies on Boar Semen. Acta Vet Scand 25, 107–112 (1984). https://doi.org/10.1186/BF03547284

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Acta Veterinaria Scandinavica

ISSN: 1751-0147