KAJIAN DAMPAK ALEL A1/A2 GEN CSN2, MASA DAN PERIODE LAKTASI SAPI PERAH PADA KUALITAS SUSU
Abstract
Penelitian ini bertujuan untuk mengetahui dampak keragaman gen CSN2, masa dan periode laktasi pada kadar protein, lemak dan padatan total sapi perah. Susu sebanyak 30 sampel diperoleh sapi PFH berbeda (A1A1 10; A1A2 10; A2A2 10) di Expfarm Fapet Unsoed dan beberapa peternakan rakyat diukur kadar protein, lemak dan padatan total menggunakan Lactoscan. Setiap parameter dilakukan uji beda F berdasarkan genotipe dan dianalisis secara bersama antara genotipe, masa dan periode laktasi menggunakan regresi linier. Hasil yang diperoleh menunjukkan tidak adanya perbedaan nyata (p>0,05) genotipe A1A1;A1A2;A2A2 antara kadar protein (3,28±0,26; 3,26±0,22; 3,29±0,08%), lemak (3,75±0,29; 3,75±0,28; 3,54±0,36%) dan padatan total (12,30±0,89; 12,30±0,67; 11,96±0,66%). Hasil regresi linier menunjukkan hanya faktor periode laktasi yang berpengaruh (p<0,05) pada kadar lemak. Simpulan yang diperoleh yakni keragaman gen CSN2 alel A1/A2 dan masa tidak berpengaruh terhadap kualitas susu serta periode laktasi hanya mempengaruhi kadar lemak susu.
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