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Relationship of ejaculate quality and selected biochemical parameters of blood in cockerels of three laying lines

Author

Listed:
  • L. Jarinkovičová

    (Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • L. Máchal

    (Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • J. Máchal

    (Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic)

  • R. Filipčík

    (Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • E. Tůmová

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • R. Horský

    (Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

Abstract

Ejaculates and blood plasma were sampled from cocks of three laying lines: Barred Plymouth Rock (BPR), Sussex Light (SU), and Rhode Island Red (RIR). Ejaculates and blood plasma were sampled four times during the laying period of hens. The following ejaculate parameters were determined: sperm motility, concentrations of sperm cells, ejaculate volume. Sperm morphology was examined. In the blood samples, concentrations of glucose, cholesterol, creatinine, calcium, phosphorus, and magnesium were analysed. The motility of spermatozoa of the cocks was 47.0% (BPR), 47.7% (RIR), and 48.3% (SU), respectively. The highest volume of ejaculate was found in BPR line (0.66 cm3), the lowest one in SU line (0.46 cm3, P ≤ 0.01); the highest sperm concentration was in SU line (2.46 × 106/mm3), the lowest one in RIR line (1.96 × 106/mm3, P ≤ 0.01). The number of morphologically abnormal sperm cells was similar in all lines - 47.0% BPR, 47.7% RIR, and 48.3% SU, respectively. In general, the occurrence of defective spermatozoa was high in all three lines; the most frequent were tail defects (from 20.3 to 29.7%), while sperm cells with developmental anomalies were less frequent (only 0.3 to 0.4%). Calculated phenotypic correlation between sperm motility on the one hand and the occurrence of defective sperm cells on the other was negative (rp = -0.28, P ≤ 0.01), as well as the correlation between sperm motility and sperm numbers, and between sperm motility and ejaculate volume (rp = -0.28, P ≤ 0.01 and rp = -0.31, P ≤ 0.01, respectively). Negative correlations were found between the level of magnesium in blood plasma and numbers of morphologically defective spermatozoa in the ejaculate, defective heads and defective connecting pieces (rp = -0.33, P ≤ 0.01; rp = -0.23, P ≤ 0.05; and rp = -0.26, P ≤ 0.05). Level of magnesium was positively correlated to sperm motility (rp = 0.26, P ≤ 0.05). However, positive correlations existed between concentration of glucose in blood plasma of cocks and numbers of morphologically defective spermatozoa in sampled ejaculates (rp = 0.27, P ≤ 0.01). Our finding is in accordance with the results found in mammals and other animals, and it shows an important role of magnesium as a key contributor to the quality of ejaculate in aviary species, in our case in laying lines of domestic fowl (Gallus domesticus).

Suggested Citation

  • L. Jarinkovičová & L. Máchal & J. Máchal & R. Filipčík & E. Tůmová & R. Horský, 2012. "Relationship of ejaculate quality and selected biochemical parameters of blood in cockerels of three laying lines," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 57(8), pages 370-376.
    • Handle: RePEc:caa:jnlcjs:v:57:y:2012:i:8:id:6272-cjas
    DOI: 10.17221/6272-CJAS
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    References listed on IDEAS

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    1. Y. Bozkurt & F. Öğretmen & Ö. Kökçü & U. Erçin, 2011. "Relationships between seminal plasma composition and sperm quality parameters of the Salmo trutta macrostigma (Dumeril, 1858) semen: with emphasis on sperm motility," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 56(8), pages 355-364.
    2. E. Tůmová & H. Härtlová & Z. Ledvinka & A. Fučíková, 2004. "The effect of digitonin on egg quality, cholesterol content in eggs, biochemical and haematological parameters in laying hens," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 49(1), pages 33-37.
    3. S. Hajirezaee & B. Mojazi Amiri & A. Mirvaghefi & A. Sheikh Ahmadi, 2010. "Evaluation of semen quality of endangered Caspian brown trout (Salmo trutta caspius) in different times of spermiation during the spawning season," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(10), pages 445-455.
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    Cited by:

    1. Ladislav Máchal & Tomáš Kopec & Zuzana Rečková & Radek Filipčík & Milan Večeřa & Vojtěch Pešan & Eva Tůmová, 2025. "Analysis of ejaculate parameters and sperm morphology in roosters of initial laying strains," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 70(2), pages 72-81.

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