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Abstrak (Bhs. Indonesia)

Penelitian yang dilaksanakan dari tanggal 07 Maret hingga 03 April 2016 di BBPTU-HPT Baturraden, Banyumas, Jawa Tengah, ini bertujuan untuk mengetahui hubungan antara umur induk saat beranak pertama dengan bobot lahir dan bobot badan pedet sapi Friesian Holstein (FH) umur tiga bulan. Materi penelitian yang digunakan adalah recording sapi perah FH sebanyak 100 ekor beserta pedetnya pada rentang waktu Januari 2014 – Desember 2015. Penelitian ini menggunakan metode survei dengan perhitungan Analisis Regresi Linier Sederhana, sebagai variabel bebas adalah umur induk saat beranak pertama, sedangkan variabel terikat adalah bobot lahir dan bobot badan pedet umur tiga bulan. Hasil penelitian menunjukkan bahwa rataan umur induk saat beranak pertama di BBPTU-HPT Baturraden sebesar 850,53±75,40 hari (28,33 bulan), rataan bobot lahir sebesar 39,6±3,92 kg dan bobot badan pedet umur tiga bulan sebesar 90,71±7,34 kg. Tidak terdapat hubungan antara umur induk saat beranak pertama dengan bobot lahir pedet sapi perah Friesian Holstein. Persamaan regresi yang didapat adalah Y= 40,33 – 0,0015X dengan nilai koefisien korelasinya (r) sebesar -0,029 dan nilai koefisien determinasinya (r2) sebesar 0,00085. Tidak terdapat hubungan antara umur induk saat beranak pertama dengan bobot pedet umur tiga bulan sapi perah Friesian Holstein. Persamaan regresi yang didapat adalah Y= 92,11 – 0,0016X dengan nilai koefisien korelasinya (r) sebesar -0,017 dan nilai koefisien determinasinya (r2) sebesar 0,00028. Terdapat hubungan antara bobot lahir dengan bobot badan pedet umur tiga bulan. Persamaan regresi yang didapat adalah Y= 44,60 + 1,18X dengan nilai koefisien korelasinya (r) sebesar 0,63 dan nilai koefisien determinasinya (r2) sebesar 0,40. Kesimpulan penelitian ini adalah 1). Umur induk saat beranak pertama tidak berpengaruh terhadap bobot lahir dan bobot badan pedet umur 3 bulan dan 2). Bobot lahir pedet berpengaruh sangat nyata terhadap bobot badan pedet umur 3 bulan sapi perah Friesian Holstein.

Abtrak (Bhs. Inggris)

The research which had been conducted from March 7th to April 3rd 2016 at BBPTU-HPT Baturraden, Banyumas, Central Java, aimed at determining the relationship between the age of Holstein-Friesian (FH) parents when giving their first birth, the birth weight and the calves’ weight after three months. The research material was the record of 100 the cattle along with their calves in January 2014 - December 2015 period. It used a survey method with the calculation Simple Linear Regression Analysis where the independent variable was the age of the cattle in their first birth, while the dependent variable was the birth weight and body weight of the calves aged three months. The results showed that the average age of the cattle in their first birth period at BBPTU-HPT Baturraden was 850.53±7.40 days (28.33 months), while the average weight of their calves was 39.6±3.92 kg when they were born and 90.71±7.34 kg after three months. There was no correlation between the age of the cattle at their first parturition with the birth weight of their calves. The obtained regression equation was Y= 40.33 – 0.0015X with a correlation coefficient (r) -0.029 and the coefficient of determination (r2) 0.00085. There was also no correlation between the age of the cattle at their first parturition weight and the three month old calves’ weight. The obtained regression equation was Y= 92.11 - 0.0016X with the value of the correlation coefficient (r) -0.017 and the coefficient of determination (r2) 0.00028. There is a correlation between the birth-weight and the three-month old calves’ weight which the regression equation was Y= 44.60 + 1.18X. The value of the correlation coefficient (r) is 0.63 while that of the coefficient of determination (r2) is 0.40. The conclusion of this research is that 1) the age of the parent at their first parturition has no effect on the birth weight and body weight of their calves aged 3 months and 2) the calves’ birth weight very significantly affects their body weight after 3 months old.

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