Correlation and Regression Analysis of Body Weight, Scrotal Circumference, and Semen Volume in Thin-tailed Rams at the Teaching Farm University of Lampung
Analisis Korelasi dan Regresi antara Bobot Badan, Lingkar Skrotum dan Volume Semen Domba Ekor Tipis di Teaching Farm Universitas Lampung
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Muhammad Mirandy Pratama Sirat(1*)
Department of Animal Husbandry, Faculty of Agriculture, University of Lampung, Bandar Lampung
http://orcid.org/0000-0003-0088-5112
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Slamet Setio(2)
Department of Animal Husbandry, Faculty of Agriculture, University of Lampung, Bandar Lampung
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Mahfud Rivai(3)
Department of Animal Husbandry, Faculty of Agriculture, University of Lampung, Bandar Lampung
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Aksal Alfarizki(4)
Department of Animal Husbandry, Faculty of Agriculture, University of Lampung, Bandar Lampung
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Siswanto Siswanto(5)
Department of Animal Husbandry, Faculty of Agriculture, University of Lampung, Bandar Lampung
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Hermilinda Parera(6)
Study Program of Animal Health, Department of Animal Science, Kupang State Agricultural Polytechnic
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Nancy Diana Foeh(7)
Laboratory of Clinical, Reproduction, Pathology, and Nutrition, Faculty of Medicine and Veterinary Medicine, Nusa Cendana University
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Akhmad Dakhlan(8)
Department of Animal Husbandry, Faculty of Agriculture, University of Lampung, Bandar Lampung
(*) Corresponding Author
Keywords:
bobot badan, domba ekor tipis, korelasi regresi, lingkar skrotum, volume semen
Abstract
Kualitas Domba Ekor Tipis jantan dapat diketahui dari performa produktivitas berupa bobot badan dan kualitas reproduksi berupa lingkar skrotum dan volume semen yang merupakan indikator kualitas reproduksi untuk keberhasilan fertilisasi. Penelitian ini mengnalisis korelasi dan regresi antara bobot badan (BB), lingkar skrotum (LS), dan volume semen (VS) pada sepuluh ekor Domba Ekor Tipis jantan (Ovis aries) berumur 8–18 bulan di Teaching Farm, Jurusan Peternakan, Fakultas Pertanian, Universitas Lampung. Metode purposive sampling digunakan untuk memilih hewan percobaan. Pengukuran BB (kg) dilakukan sebelum pemberian pakan pagi, LS (cm) diperoleh dari rerata dua kali pengukuran, dan koleksi VS (ml) menggunakan vagina buatan. Setiap parameter diukur sebanyak tiga kali dengan selang waktu empat hari, menghasilkan total 30 data (n=30). Data dianalisis menggunakan perangkat lunak R dengan uji korelasi Pearson untuk menentukan kekuatan dan arah hubungan antarvariabel, serta regresi linear untuk memodelkan hubungan prediktif antara: (1) BB dan LS, (2) BB dan VS, dan (3) LS dan VS. Hasil penelitian menyajikan korelasi positif kuat antara BB dan LS (r = 0,623; Y = 17,689 + 0,242X), korelasi positif sedang antara BB dan VS (r = 0,505; Y = -0,153 + 0,056X), serta korelasi positif sedang antara LS dan VS (r = 0,406; Y = 21,010 + 1,428X). Kesimpulan penelitian ini menunjukkan bahwa bobot badan dan lingkar skrotum dapat digunakan sebagai indikator fenotipik untuk memprediksi volume semen, sehingga dapat menjadi kriteria praktis dalam seleksi Domba Ekor Tipis jantan unggul.
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References
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Badan Pusat Statistik. (2023). Statistik Indonesia 2023 (Direktorat Diseminasi Statistik, Ed.).
Barbas, J. P., Pimenta, J., Baptista, M. C., Marques, C. C., Pereira, R. M. L. N., Carolino, N., & Simões, J. (2023). Ram Semen Cryopreservation for Portuguese Native Breeds: Season and Breed Effects on Semen Quality Variation. Animals, 13(4). https://doi.org/10.3390/ani13040579
Dakhlan, A. (2019). Experimental Design and Data Analysis Using R. Graha Ilmu. http://grahailmu.id/product/experimental-design-and-data-analysis-using-r/
Depison, Putra, W. P. B., Gushairiyanto, Alwi, Y., & Suryani, H. (2021). Morphometrics Characterization of Thin-Tail Sheep in Lowland and Highland Areas. Tropical Animal Science Journal, 44(4), 386–398. https://doi.org/10.5398/tasj.2021.44.4.386
Garner, D. L., & Hafez, E. S. E. (2000). Spermatozoa and Seminal Plasma in Reproduction in Farm Animals. Edited by ESE Hafez and B. Hafez. 7th Edition. Lea and Febiger. Philadelphia.
Hafez, B. (2000). Reproduction in Farm Animals 7th Edition. In Lippincott Williams & Wilkins (Vol. 3, Issue 3).
Hernaman, I., Hidajat, K., Budiman, A., & Nurachma, S. (2014). Performa Reproduksi Domba Jantan dengan Ransum Berbasis Limbah Perkebunan Singkong yang Disuplementasi Seng (Zn) dan Kobalt (Co). Jurnal Peternakan Indonesia (Indonesian Journal of Animal Science), 16(3), 152. https://doi.org/10.25077/jpi.16.3.152-156.2014
Integrated Taxonomic Information System. (2023). Ovis aries Linnaeus, 1758. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=552475#
Islam, M. M., Sharmin, S., Shah Newaz, M., Juyena, N. S., Rahman, M. M., Jha, P. K., & Bari, F. Y. (2017). Quality of Ram Semen in Relation to Scrotal Biometry. ICARG 2017 : 19th International Conference on Animal Reproduction and Genetics. https://publications.waset.org/abstracts/61077/quality-of-ram-semen-in-relation-to-scrotal-biometry
Knights, S. A., Baker, R. L., Gianola, D., & Gibb, J. B. (1984). Estimates of heritabilities and of genetic and phenotypic correlations among growth and reproductive traits in yearling Angus bulls. Journal of Animal Science, 58(4), 887–893. https://doi.org/10.2527/jas1984.584887x
Koyuncu, M., Uzun, S. K., Ozis, S., & Duru, S. (2005). Development of testicular dimensions and size, and their relationship to age and body weight in growing Kivircik (western thrace) ram lambs. Czech Journal of Animal Science, 50(6), 243–248. https://doi.org/10.17221/4164-cjas
Maulana, H., & Baliarti, E. (2021). Kemampuan Produksi Domba Ekor Tipis pada Berat Badan Awal Berbeda yang diberi Pakan Kangkung Kering. Biospecies, 14(2), 31–36. https://doi.org/10.22437/biospecies.v14i2.14818
Novita, C. I., Helviza, C., & Asril, A. (2020). Pemanfaatan Limbah Sereh Wangi (Cymbopogon nardus) Amoniasi sebagai Pengganti Sebagian Pakan Basal terhadap Kualitas Semen Segar Domba Ekor Tipis. Jurnal Agripet, 20(2), 168–176. https://doi.org/10.17969/agripet.v20i2.15261
Nubatonis, A., Purwantiningsih, T. I., Oki, Y., & Doarce, B. (2022). Evaluasi Spermatozoa Domba Jantan Berekor Tipis yang Digembalakan di Lahan Kering. Jurnal Peternakan Indonesia (Indonesian Journal of Animal Science), 24(1), 55. https://doi.org/10.25077/jpi.24.1.55-65.2022
OECD/FAO. (2021). Meat consumption (indicator). https://doi.org/10.1787/4bde2d83-en
OECD/FAO. (2023). OECD-FAO Agricultural Outlook 2023-2032. OECD. https://doi.org/10.1787/08801ab7-en
Qadarsina, Dasrul, & Wahyuni, S. (2019). Konsentrasi Hormon Testosteron Kerbau Simeulue dan Korelasinya dengan Tingkat Umur dan Lingkar Skrotum. Jurnal Agripet, 19(1), 13–21. https://doi.org/10.17969/agripet.v19i1.8692
R Core Team. (2023). The R Project for Statistical Computing: R version 4.3.1 (Beagle Scouts). https://www.r-project.org/
Saputra, D., Ihsan, M., & Isnaini, N. (2017). Korelasi Antara Lingkar Skrotum dengan Volume Semen, Konsentrasi dan Motilitas Spermatozoa Pejantan Sapi Bali. Jurnal Ternak Tropika, 18(2), 47–53. https://doi.org/10.21776/ub.jtapro.2017.018.02.9
Setiadi, D. R., Fatimah, F., Diapari, D., & Arifiantini, R. I. (2022). Kualitas Semen Domba Lokal dari Frekuensi Ejakulasi Berbeda. Jurnal Nukleus Peternakan, 9(1), 42–47. https://doi.org/10.35508/nukleus.v9i1.6596
Sharmin, S., Islam, M., Saha, A., Akter, S., Juyena, N., & Bari, F. (2022). Quality of ram semen in relation to scrotal size. Bangladesh Veterinarian, 38(1–2). https://doi.org/10.3329/bvet.v38i1-2.63671
Sihombing, J. M. (2022). Kualitas Makroskopis Semen Segar Domba Ekor Tipis pada Sistem Pemeliharaan yang Berbeda. Jurnal Peternakan, 7(1), 88–93. https://doi.org/10.31604/jac.v7i1.8968
Sugiyono. (2022). Metode Penelitian Kuantitati dan Kualitatif dan R&D (2nd ed.). Alfabeta. https://cvalfabeta.com/product/metode-penelitian-kuantitatif-kualitatif-dan-rd-mpkk/
Sumantri, C., Einstiana, A., Salamena, J. F., & Inounu, I. (2007). Keragaan dan Hubungan Phylogenik antar Domba Lokal di Indonesia melalui Pendekatan Analisis Morfologi. Journal Ilmu Ternak Dan Veteriner, 12(1), 42–54. https://www.researchgate.net/publication/317233070
Syamyono, O., Samsudewa, D., & Setiatin, E. T. (2014). Korelasi Lingkar Skrotum dengan Bobot Badan, Volume Semen, Kualitas Semen, dan Kadar Testosteron pada Kambing Kejobong Muda dan Dewasa. Buletin Peternakan, 38(3), 132–140. https://journal.ugm.ac.id/buletinpeternakan/article/view/5248.
Published
2025-06-25
How to Cite
Sirat, M. M., Setio, S., Rivai, M., Alfarizki, A., Siswanto, S., Parera, H., Foeh, N., & Dakhlan, A. (2025). Correlation and Regression Analysis of Body Weight, Scrotal Circumference, and Semen Volume in Thin-tailed Rams at the Teaching Farm University of Lampung. JURNAL KAJIAN VETERINER, 13(1), 21-30. https://doi.org/10.35508/jkv.v13i1.19520
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Articles
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