Korelasi periode laktasi terhadap produksi susu sapi peranakan Friesian Holstein di UPT PT dan HMT Batu

Abstract

The objective of this study is to determine the effect of different lactation periods on the milk production of FH crossbred cows. The research was conducted at the UPT PT and HMT Batu, located at Jl. Raya Tlekung, Desa Beji, Kecamatan Junrejo, Kota Batu, East Java. This study utilized primary data with research parameters including different lactation periods and milk production. The cows used were lactating cows in periods 1 to 4, totaling 16 cows, with 4 cows in each lactation period. Milk production data were collected twice daily, in the morning (05:00) and afternoon (13:00) over a period of one month. The obtained data were analyzed using the IBM SPSS Statistic 24 application, employing the methods of Correlation Coefficient and Determination Coefficient tests. The statistical analysis results indicated that the lactation period has a weak correlation (0.379) with milk production. The regression analysis showed a determination coefficient (R2) value of 14.3%. This weak correlation is suspected to be due to a decrease in the average milk production from the third to the fourth lactation period.