Abstract
Abstrak Penelitian ini bertujuan untuk mengetahui nilai korelasi dan model regresi antara bobot badan dengan lingkar skrotum dan volume semen serta antara lingkar skrotum dan volume semen sapi Limousin di Balai Inseminasi Buatan Lembang Jawa Barat. Pengamatan dilakukan terhadap 43 ekor sapi Limousin jantan umur 2-13 tahun. Hasil penelitian menunjukkan bahwa nilai koefisien korelasi antara bobot badan (X) dan lingkar skrotum (Y) yaitu sebesar 0,68 dengan persamaan regresi Y = 19,66 + 0,023X dan nilai koefisien determinasi atau R 2 = 0,46; nilai koefisien korelasi antara bobot badan (X) dan volume semen (Y) yaitu sebesar 0,52 dengan persamaan regresi Y =-1,85 + 0,0095X dan nilai R 2 = 0,27; dan nilai koefisien korelasi antara lingkar skrotum (X) dengan volume semen (Y) yaitu sebesar 0,40 dengan persamaan regresi Y =-2,35 + 0,21X dan nilai R 2 = 0,16. Kesimpulan hasil penelitian ini adalah bahwa terdapat korelasi kategori sedang antara bobot badan dan lingkar skrotum, antara bobot badan dan volume semen, serta antara lingkar skrotum dan volume semen pada sapi pejantan Limousin, sehingga bobot badan dan lingkar skrotum dapat dijadikan variabel dalam memprediksi volume semen serta dapat dijadikan sebagai indikator untuk seleksi pejantan Limousin. Kata Kunci : bobot badan, korelasi dan regresi, lingkar skrotum, sapi pejantan Limousin, volume semen Abstract This study aimed to determine the correlation value and regression model between body weight and scrotal circumference and semen volume as well as between scrotal circumference and semen volume of Limousin bull at Lembang Artificial Insemination Center. Observations were made on 43 Limousin bulls aged 2-13 years. The results showed that the correlation coefficient between body weight (X) and scrotal circumference (Y) was 0.68 with the regression equation of Y = 19.66 + 0.023X and the coefficient determination or R 2 = 0.46; the correlation coefficient between body weight (X) and volume of semen (Y) was 0.52 with the regression equation of Y =-1.85 + 0.0095X and the value of R 2 = 0.27; and the correlation coefficient between scrotal circumference (X) and semen volume (Y) was 0.40 with the regression equation of Y =-2.35 + 0.21X and the value of R 2 = 0.16. The conclusion of the results of this study is that there is a fairly close and significant correlation between body weight, scrotal circumference and semen volume in Limousin bull, so that body weight and scrotal circumference can be used as variables in predicting semen volume as well as indicators for selection of Limousin bulls.
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CITATION STYLE
Dakhlan, A., Roniadi, B., Siswanto, S., & Hamdani, M. D. I. (2021). Korelasi dan regresi antara bobot badan, lingkar skrotum, dan volume semen sapi Limousin di Balai Inseminasi Buatan Lembang, Jawa Barat. Jurnal Ilmu Ternak Universitas Padjadjaran, 21(2), 109. https://doi.org/10.24198/jit.v21i2.33376
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