Penelitian ini bertujuan untuk mengetahui korelasi antara parameter biokimia darah dan kinerja reproduksi pada sapi Peranakan Friesian Holstein. Penelitian ini menggunakan sampel darah dari 11 ekor sapi PFH laktasi berumur 2,5 sampai 5 tahun. Ternak dipelihara dikelompok ternak Sedyo Mulyo, Dusun Boyong, Desa Hargobinangun, Pakem. Sampel darah diambil melalui vena caudalis pada sore hari sebelum pemberian pakan, pengambilan darah dilakukan tiap dua minggu sekali. Sampel darah dianalisis kadar glukosa, kolesterol, dan albumin. Data parameter biokimia darah dianalisis untuk mengetahui korelasi dengan kinerja reproduksi yaitu, post partum estrus dan service per conception. Data kinerja reproduksi didapatkan dari hasil recording. Data yang diperoleh dianalisis menggunakan model korelasi. Hasil penelitian menunjukkan bahwa koefisien korelasi glukosa, kolesterol dan albumin terhadap post partum estrus berturut-turut yaitu 0,238, -0,384 dan 0,042. Nilai signifikansi post partum estrus terhadap glukosa, kolesterol dan albumin berturut-turut yaitu 0,181, 0,027, dan 0,817. Koefisien korelasi glukosa, kolesterol dan albumin terhadap service per conception berturut-turut yaitu -0,396, -0,001 dan 0,286. Nilai signifikansi service per conception terhadap glukosa, kolesterol dan albumin berturut-turut yaitu 0,022, 0,995, dan 0,107. Berdasarkan hasil penelitian dapat disimpulkan bahwa terdapat korelasi negatif antara kolesterol dengan post partum estrus, dan glukosa dengan service per conception pada sapi PFH.

This study was aim to determine the correlation between blood biochemistry and reproductive performance in Friesian Holstein Crossbreed (FHC) cows. Study used blood samples from 11 PFH lactation cows with range of age between 2,5 to 5 years. The cows were being raised by Sedyo Mulyo farmer in Boyong, Hargobinangun, Pakem. Blood samples were collected from the caudalis vein at the afternoon before the feeding time every two weeks. The blood chemistry such as the other variabel glucose, cholesterol, and albumin. The blood chemistry parameters were correlated with reproduction performance, which were post partum estrus and service per conception. Reproduction performance data were measured from the recording and being analyzed using correlation model. The result showed that the correlation coefficient of glucose, cholesterol, and albumin to post partum estrus were 0,238, -0,384 and 0,042, respectively. The significance value of post partum estrus to glucose, cholesterol, and albumin were 0,181, 0,027, and 0,817, respectively. The correlation coefficient of glucose, cholesterol, and albumin to service per conception were -0,396, -0,001 and 0,286, respectively. The significance value of service per conception to glucose, cholesterol, and albumin were 0,022, 0,995, and 0,107, respectively. Based on the results of research it can be concluded that there was negative correlation between cholesterol level and post partum estrus, and the glucose level and service per conception in FHC cows. (Keywords: FHC cows, blood biochemistry parameters, reproduction performance)

Kata Kunci : Sapi PFH, parameter biokimia darah, kinerja reproduksi