KUALITAS KOLOSTRUM SAPI PERAH FRIESIEN HOLSTEIN (FH) DENGAN UMUR KOLOSTRUM YANG BERBEDA DITINJAU DARI KADAR LEMAK
Authors: Surjowardojo Puguh , Muarifah Hanum , Rifa’i Rifa’i , Handayani Ike Mawarni 
Published: December 2022

Abstrak
Penelitian ini dilakukan dengan tujuan mengetahui kadar lemak kolostrum sapi FH pada umur kolostrum yang berbeda yang dipelihara secara intensif di Peternakan Rakyat Koperasi Peternakan Sapi Perah (KPSP) yang berlokasi di Kecamatan Tutur, Nongkojajar, Kabupaten Pasuruan, Provinsi Jawa Timur, Indonesia. Materi yang digunakana dalam penelitian ini adalah kolostrum dari induk 37 sapi perah FH yang laktasi, sampel yang diambil meliputi hari pemerahan ke 1, ke 2, ke 3 dan ke 4 dengan waktu pemerahan pagi dan sore. Data penelitian dianalisis menggunakan regresi linier sederhana. Hasil dari penelitian menunjukkan rata-rata kadar lemak kolostrum sapi perah FH pada periode laktasi 1,2,3 dan 4 hasil pemerahan pagi berkisar antara 6,49 - 8,56%, sedangkan rataan kadar lemak hasil pemerahann sore berkisar antara 6,43 – 9,35%. Hubungan antara hari pemerahan dengan kadar lemak kolostrum pagi sapi perah dari persamaan regresi Y= 9,217 + (-0,719)X dan persamaan regresi Y= 10,287 + (-0,822)X pada sore hari yang artinya setiap peningkatan 1 hari pemerahan, maka nilai kadar lemak menurun sebesar 0,719 pada pagi hari dan nilai kadar lemak menurun sebesar 0,822 pada sore hari. Sedangkan nilai koefisien relasi (r) pagi diperoleh 0,267 dan nilai koefisien relasi (r) sore diperoleh 0.325, menunjukan adanya hubungan positif yang rendah antara hari pemerahan dengan kadar lemak kolostrum pada pagi dan sore hari. Nilai koefisien determinasi (R2) pada pagi hari sebesar 7,1% dan 10,6% pada sore hari, artinya hari pemerahan berpengaruh hanya 7,1% (pagi) dan 10,6% (sore) terhadap kadar lemak kolostrum serta 92,9% (pagi) dan 89,4 % (sore) ditentukan oleh faktor lain.

Abstract
This study was conducted with the aim of knowing the colostrum fat content of FH cows at different ages of colostrum that were intensively reared at the Dairy Cattle Farming Cooperative People's Farm (KPSP) located in Tutur District, Nongkojajar, Pasuruan Regency, East Java Province, Indonesia. The material used in this study was colostrum from 37 lactating FH dairy cows. The samples taken included the 1st, 2nd, 3rd, and 4th day of milking with morning and afternoon milking. The research data was analyzed using simple linear regression. The results of the study showed that the average fat content of colostrum of FH dairy cows in the lactation period of 1, 2, 3, and 4 in the morning milking ranged from 6.49–8.56%, while the average fat content in the afternoon milking ranged from 6.43–9.35%. The relationship between the day of milking and the fat content of colostrum in the morning of dairy cows from the regression equation Y = 9,217 + (-0,719)X and the regression equation Y = 10,287 + (-0,822)X in the afternoon, which means that for every 1 day increase in milking, the fat content value decreased by 0.719 in the morning and the value of fat content decreased by 0.822 in the afternoon. The value of the correlation coefficient (r) in the morning was 0.267 and the value of the relation coefficient (r) in the afternoon was 0.325, indicating a low positive relationship between milking days and colostrum fat levels in the morning and evening. The value of the coefficient of determination (R2) in the morning is 7.1% and 10.6% in the afternoon, meaning that the day of milking only affects 7.1% (morning) and 10.6% (evening) of colostrum fat content and 92.9% (morning) and 89.4% (afternoon) were determined by other factors.