Effect of two pre-freezing methods on quality of sexed semen in Ettawa Grade goat

DOI: https://doi.org/10.14710/jitaa.43.4.405-411

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Article Info
Submitted: 14-09-2018
Published: 11-12-2018
Section: Articles
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The aim of this study was to determine the influence of pre-freezing different procedures to the quality of Ettawa Grade goat frozen semen-sexing. The research material was semen sexing consisted of 2 layers those were top layer and bottom layer. The quality of frozen semen sexing was observed by comparing the pre-freezing technique (factory standard operating procedure: FSOP) according to the  Artificial Insemination Center operating procedure (pre-freezing by placing the straw of semen for about 4 cm above liquid nitrogen for 9 minutes) with the modification procedure (MP), pre-freezing by placing the straw of semen 16 cm above liquid nitrogen for 9 minutes and then it was lowered to 4 cm above liquid nitrogen for 9 minutes during the pre-freezing phase. The parameters observed were motility, progressive motility, hyperactivation, and sperm linearity. Data were analyzed using Student's t-test.The results of this study indicated that the quality of sexed-semen in the standard operating procedures of frozen semen compared to the treatment of modifications to the top and bottom layers were motility at the top layer (46.06 ± 7.52% vs 55.6 ± 7.78%) and bottom layer (36.82 ± 6.49% vs. 41.47 ± 6.57%); progressive top layer (16.34 ± 4.27 vs. 32.83 ± 5.9%) and bottom layer 15.97 ± 2.72% vs. 19.79 ± 3.97%); hyperactivity in the top layer (0.81 ± 0.6% vs 4.09 ± 1.98%) and the bottom layer (0.71 ± 0.68% vs. 1.50 ± 1.05%); linearity consisted of linear and non-linear, the top layer (12.19 ± 2.94 vs. 20.52 ± 3.97%) and bottom layer (12.32 ± 2.63 vs 14.70 ± 2.6); while non-linear in top layer (0.14 ± 0.2 vs 0.68 ± 0.85%) and bottom layer (0.4 ± 0.13% vs 0.34 ± 0.4%). The conclusions in this study indicated that the quality of the frozen sexed-semen that has processed by pre-freezing modification technique was better than the frozen sexed-semen obtained from the Artificial Insemination Center Standard Operating procedure.

Keywords

frozen semen; pre-freezing; Ettawa grade goat

  1. Y.S. Ondho 
    Faculty of Animal and Agricultural Sciences, Diponegoro University Tembalang Campus, Semarang 50275, Indonesia
  2. S.B. Udrayana 
    Agriculture Extension College Jl. Dr. Cipto No.144a, Sengkkrajan, Bedali, Lawang, Malang, East Java 65215, Indonesia