EVALUASI PEMBERIAN WAFER SUPLEMEN PAKAN MENGANDUNG PRILL FAT TERHADAP PRODUKSI DAN KUALITAS SUSU SAPI DI PETERNAKAN BOYOLALI

Abstract

Prill fat is a hydrogenated vegetable oil containing more than 85% palmitic acid with a high melting point. Prill fat has long-chain saturated fatty acids with little effect on rumen microbial populations or commonly known as rumen bypass, the amount of palmitic acid released in the rumen is not much different from the amount consumed. Prill fat is in the form of granola from the size reduction process using the spray drying method. Feeding a pure C16:0 source feed will increase the percentage of milk fat by 2 times, but has no effect on milk production, feed quality can be seen from the physical state of the feed and the influence that occurs or performance on livestock. This research was carried out through 2 stages. The first stage is the manufacture of supplement wafers containing prill fat which is carried out in the Industrial and Feed Manufacturing Laboratory with formulations that are suitable for the needs of lactated livestock, the manufacture of supplement wafers containing prill fat using the mixing method with a mixer machine with a mixing sequence of micro materials for ± 5 minutes. Next, the macro ingredients are mixed for 15 minutes and finished with liquid ingredients for 10 minutes until homogeneous. The next process is to print feed supplement wafers using a wafer printing machine with a temperature of 50°C for 1.5 minutes. Then the wafer is cooled before packing. The second stage is the evaluation of the provision of feed supplement wafers containing prill fat in vivo (milk production, milk quality and income over feed cost). The design used was a randomized group design (RAK) consisting of 6 treatments, namely P0: control feed + 0 supplement wafers, P1: P0 + 100 g supplement wafers, P2: P0 + 200 g supplement wafers, P3: P0 + 300 g supplement wafers, P4: P0 + 400 g supplement wafers, P5: P0 + 500 g supplement wafers and 4 groups as replicates, where groups were differentiated based on milk production from low, medium, high and very high. The data obtained from this study was analyzed using Analysis of Variance (ANOVA) and if there were any differences, it was followed by a follow-up test using orthogonal polynomials. Data processing in the study used Microsoft Excel and SPSS 25 software. The results showed that the application of feed supplement wafers containing prill fat had a significant effect (P<0.05) on dairy cow milk production with the results of the polynomial test being the quadratic regression equation y = -1E-07x3 + 1E-04x2-0.0076x-0.3292 R² = 0.2455 (y is the milk production delta and x is the supplement wafer level). With an optimum point x = 333 g and a milk production delta y = 4.6 L. Treatment (P4) showed significant milk production compared to control livestock (P0), where milk production was controlled from 9.94 to 12.91 L in the wafer treatment supplement. The quality of dairy cow's milk can be seen from the content of chemical components such as lactose, fat, protein, solid non fat (SNF) and specific gravity. The results of the variegated fingerprint analysis showed that the supplemental wafer supplementation containing prill fat had no significant effect (P>0.05) on lactose, protein, SNF, and density. It had a real effect (P<0.05) on dairy cow milk fat. The results of the milk fat polynomial test also produced a cubic regression equation that can be used to predict the effect of the addition of supplement wafers on milk production. The regression equation of wafer supplement supplementation in milk fat is as follows, Milk fat prediction equation: y = 9E-08x3 - 7E-05x2 + 0.0132x + 3.5878 (y is milk fat and x the wafer supplement level) the optimal value of milk fat is 3.9 with wafer supplement supplementation of 259.25 g. Milk production greatly affects the income over feed cost (IOFC) obtained. Based on the milk production results obtained from this study, IOFC could be calculated to compare business income with the feed consumed. The results of the milk fat polynomial test also produced a cubic regression equation that can be used to predict the effect of the addition of supplement wafers on the percentage increase in IOFC. Optimal value of milk fat is 3.9 with the supplement's wafer supplementation of 259.25 g. Supplementation of wafer supplements containing prill fat at a level of 200 g is able to increase milk production, milk fat content and the best IOFC so that wafer supplements containing prill fat could be given to dairy farms with small to large-scale businesses.