BERAT PENGARUH DAN UKURAN TUBUH TERHADAP UMUR PENCAPAIAN PUBERTAS SAPI PERANAKAN ONGOLE

BAYU ANDRI ATMOKO, Prof. Dr. Ir. Endang Baliarti, SU

2014 | Skripsi | ILMU DAN INDUSTRI PETERNAKAN

Penelitian ini bertujuan untuk mengetahui pengaruh berat dan ukuran tubuh terhadap pencapaian umur pubertas sapi PO di kelompok ternak Triandhini Rejo, Tegalrejo, Yogyakarta. Pengamatan dilakukan terhadap 36 ekor sapi PO dara dari bulan Oktober 2012 sampai Oktober 2013. Data yang dicatat adalah umur, berat dan ukuran tubuh sapi saat pertama kali menunjukan tanda birahi. Saat pubertas dicapai dilakukan penimbangan dan pengukuran tubuh sapi, kemudian sapi dikelompokkan berdasarkan atas pencapaian umur pubertas yang diprediksi berdasarkan pada pergantian gigi seri sapi (Id, I1, dan I2). Data umur sapi saat mencapai pubertas dihitung persentasenya, sedangkan data berat dan ukuran tubuh dianalisis dengan uji one-way anova. Hasil penelitian diperoleh bahwa umur pubertas sapi PO dicapai pada tiga tingkatan umur yang berbeda yaitu Id (1,5 tahun), I1 (2 tahun) dan I2 (3 tahun) dengan persentase 41,67%, 33,33% dan 25%. Berat tubuh saat pubertas pada umur pubertas Id, I1, dan I2 yaitu 212,23±35,18 kg, 232,46±34,99 kg, dan 202,72±20,27 kg. Rata-rata tertingi panjang badan, tinggi gumba, tinggi pinggul, lebar dada, lingkar dada dan lebar kepala berturut-turut adalah 106,13±5,52 cm, 123,37±3,44 cm, 131,80±2,79 cm, 37,60±3,58 cm, 154,96±6,63 cm, dan 21,20±1,32 cm pada umur pubertas I1. Rata-rata tertingi dalam dada dan panjang kepala adalah 59,00±3,12 cm dan 49,95±1,98 cm pada umur pubertas Id. Rata-rata tertinggi lebar pinggul adalah 37,55±2,40 cm pada umur pubertas I2. Hasil analisis statistik rata-rata berat dan ukuran tubuh sapi pada masing-masing kelompok umur menunjukan perbedaan yang tidak nyata. Disimpulkan bahwa berat dan ukuran tubuh berpengaruh terhadap pencapaian umur pubertas.

The study was designed to identify the influence of weight and body size on the achievement of puberty age of Ongole crossbred heifers in Triandhini Rejo cattle group, Tegalrejo, Yogyakarta. The observation had been done on 36 heads of heifer from October 2012 until October 2013. When heifers showed first signs of estrous, the data of age, weight and body size ware collected. The heifers were weighed and measured then be grouped based on its puberty age, which predicted according to the turn of cattles incisors (Id, I1, and I2). The data of puberty age were calculated and analyzed descriptively, while the body weight and the body size of the heifers were analyzed by using one-way ANOVA test. Result of this study showed that the age of Ongole crossbred heifers puberty achieved on the three different age levels, which ware Id (1.5 years), I1 (2 years) and I2 (3 years), with the percentages were 41.67%, 33.33% and 25%. The average of body weights during onset of puberty on the puberty age of Id, I1, and I2 were 212.23±35.18 kg, 232.46±34.99 kg, and 202.72±20.27 kg. The highest average of body length, witheres height, hip height, chest width, girth of chest and head width were; 106.13±5.52 cm, 123.37±3.44 cm, 131.80±2.79 cm, 37.60±3.58 cm, 154.96±6.63 cm, and 21.20±1.32 cm, which ware obtained on the age of I1. Meanwhile, the highest average of chest depth and head length were obtained were on the age of Id (59.00±3.12 cm and 49.95±1.98 cm). Whereas, the highest average of hip width was 37.55±2.40 cm on the puberty age of I2. The average weight and the body size of the heifers at each of groups showed non significant differences. It can be concluded that weight and body size had an effect on the achievement of puberty age.

Kata Kunci : Sapi Peranakan Ongole, Pubertas, Berat tubuh, Ukuran tubuh