ABSTRAK. Saat ini sudah tersedia berbagai produk teknologi monitoring kesehatan ternak berdasarkan analisis tingkah laku ternak. Namun belum ada teknologi monitoring berdasarkan tingkah laku yang cocok untuk pemeliharaan intensif seperti di Indonesia. Penelitian ini bertujuan untuk mendapatkan dasar teknologi monitoring sapi berahi berdasarkan perubahan total durasi berbaring harian antara sapi berahi dengan non berahi. Sebanyak 18 ekor sapi betina Peranakan Ongole (PO) sehat reproduksi ditempatkan pada kandang individu yang terpantau kamera selama 24 jam. Pengambilan data foto posisi berbaring atau berdiri sapi dilakukan tiap 2 menit. Dilakukan penjumlahan durasi total berdiri dan berbaring harian selama satu siklus berahi. Penentuan kondisi berahi menggunakan metode visual dan menggunakan heat detector “Brunstmessgerat”. Uji T test berpasangan dilakukan untuk membandingkan rata-rata berbaring harian sapi non berahi dengan durasi harian sapi berahi. Hasil penelitian menunjukkan bahwa lama siklus berahi adalah sebesar 20,3 ± 1,5 hari yang mengindikasikan sapi sehat secara reproduksi dan mendapatkan ketercukupan nutrisi pakan. Data total durasi berbaring harian yang didapatkan dari hasil tangkapan foto kamera menunjukkan sebaran data yang terdistribusi normal dan terdapat perbedaan yang nyata antara total durasi berbaring harian sapi berahi 49,83% dengan rata-rata total durasi berbaring harian sapi non berahi 53,60%. Hasil ini membuka peluang untuk dikembangkan menjadi teknologi monitoring sapi berahi berdasarkan perbedaan tingkah laku berbaring sapi.  (Decreasing of the total daily lying behavior on oestrus cow, as an opportunity to become an automatic warning system for oestrus cows) ABSTRACT. Today, various livestock health monitoring technology products based on the analysis of livestock behavior are available. However, there is no behavior-based monitoring technology suitable for intensive maintenance such as in Indonesia. This study aims is to obtain the basic monitoring technology for heat cows based on changes of the total daily lying behavior duration between oestrus and non oestrus cows. A total of 18 healthy PO cows were placed in individual pan which were monitored by the camera in 24 hours a day. Collecting photo data from lying or standing position of the cow was done every 2 minutes. The total duration of daily standing and lying behavior for one oestrus cycle was done. The determination of the heat condition used a visual method and a heat detector manufactured by Brunstmessgerat. Paired T-test was conducted to compare the average daily lying behavior of oestrus and non oestrus cows. The results showed that the oestrus cycle length was 20,3 ± 1,5 days, which indicated that the cows were reproductively healthy and had adequate feed nutrition. The total daily lying behavior duration data obtained from the camera photo captures showed that the distribution of data is normally distributed and there is a significant difference between the total daily lying behavior duration of oestrus 49,83% and non oestrus 53,60%. This result opens the opportunity to be developed into a monitoring technology for oestrus cows based on differences in the lying behavior.

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Abstract. The study was conducted to determine the correlation between the body morphology size of PO steers and heifers which kept in the group housing of Litbangtan Models. The materials of this study used 24 PO steers and heifers (each cow was 15 to 18 months old). The data were analyzed using descriptive statistics and correlation analysis. Due to the significant value, it stated that the body length and chest circumference influenced positively to the gain of the weight body of PO steers and heifers . The value of determination analysis (R 2 ) both PO steers and heifers was 92.70% and 86.80%; It indicated that the gain of the body length size and chest circumference would increase the body weight. The result of calculation shown that the average of body weight of PO steers and heifers after having used two body morphological measurement (body length and chest circumference) was relativeely close to the real measurement. This phenomenon indicated that the body length and chest circumference had a close relationship with the body weight either in PO steers and heifers.Key words: PO steers and heifers, body morphological size, body weight Abstrak. Penelitian ini dilaksanakan untuk menentukan korelasi antara ukuran morfologi tubuh PO steers dan heifer yang dipelihara di kandang kelompok Litbangtan Model. Materi yang digunakan dalam penelitian ini adalah 24 PO steer dan heifer (masing-masing berumur 15 sampai 18 bulan). Data dianalisis menggunakan deskriptif statistik dan analisis korelasi. Berdasarkan nilai signifikan, dinyatakan bahwa panjang badan dan lingkar dada berpengaruh positif terhadap peningkatan bobot badan PO steer dan heifer. Nilai koefisien determinsasi (R 2 ) PO steer dan heifer adalah 92,70% dan 86,80%; mengindikasikan bahwa peningkatan ukuran panjang badan dan lingkar dada akan meningkatkan bobobt tubuh. Hasil perhitungan menunjukkan bahwa rataan bobot tubuh PO steer dan heifer setelah menggunakan dua ukuran morfologi tubuh (panjang badan dan lingkar dada) serupa dengan ukuran nyata. Fenomena ini menunjukkan bahwa panjang badan dan lingkar dada berkaitan erat dengan bobot tubuh pada PO steer maupun heifer.Kata kunci: PO steer dan heifer, ukuran morfologi tubuh, bobot tubuh

ABSTRACT. Tujuan penelitian untuk mengetahui status reproduksi hasil persilangan sapi peranakan ongole (PO) dan sapi bali (yang selanjutnya dinamakan sapi POBA) jantan dan betina melalui beberapa kegiatan lapang. Penelitian ini bersifat non eksperimental yang dilakukan secara eksploratif; menggunakan 20 ekor sapi berumur antara 32 sampai 36 bulan. Parameter yang diamati meliputi kualitas semen, kondisi organ reproduksi sapi betina dan angka kebuntingan. Hasil penelitian menunjukkan, kualitas semen sapi POBA rendah atau jelek berdasarkan hasil analisis secara mikroskopis maupun makroskopis; namun memiliki libido yang cukup tinggi yaitu rata-rata sekitar 4 menit 25 detik dari mulai mengendus atau didekatkan dengan ternak pemancing (teaser) sampai ejakulasi. Secara umum kondisi organ reproduksi sapi POBA betina normal, sehingga siap dijadikan indukan yang produktif. Sebanyak 66,67% menunjukkan perilaku estrus yang tampak terutama keluar lendir yang terlihat jelas menggantung di bibir vagina bahkan diantaranya mengejar dan/atau menaiki sapi-sapi lain. Namun hasil pemeriksaan kebuntingan (PKB) melalui palpasi rektal menunjukkan tidak ada sapi betina yang bunting. Dapat disimpulkan bahwa sapi POBA jantan infertil, yang diindikasikan melalui hasil pemeriksaan semen dan tidak adanya sapi betina yang berhasil bunting melalui perkawinan alam selama 3 (tiga) bulan. Sedangkan sapi betina POBA memiliki organ reproduksi normal serta menunjukkan ekspresi estrus yang baik.  (The evaluation of cattle reproduction status between crosses Ongole Crossbreed with Bali cows) ABSTRAK. The purpose of this research was to determine the reproductive status of the crossbred PO and Bali cattle (hereinafter referred to as POBA cattle) through several field activities. This research is non-experimental and carried out exploratory using 20 cattle aged 32 to 36 months. Parameters observed included semen quality, cows' reproductive organ condition, and pregnancy rate. The quality of POBA bulls semen was low or bad as indicated by the results of microscopic and macroscopic analysis; but had pretty high libido, which was an average of about 4 minutes and 25 seconds, starting to sniff or being brought near to teaser until ejaculation. In general, the reproductive organs of POBA cows were normal so that they were ready to become productive sires. As many as 66.67% showed estrus behavior, especially visible mucus that was hanging on the lips of the vagina, even among them chasing and/or riding other cattle. However, the results of pregnancy examination through rectal palpation showed that there were no pregnant cows. It can be concluded that POBA bulls are infertile, which was indicated by the results of semen examination and the absence of successfully conceived cows through natural mating for 3 (three) months. Meanwhile, POBA cows have normal reproductive organs and show good estrus expression.