Effect of mineral premix addition to feed on performance of SAN laying hens
Abstract. Specific Antibody Negative (SAN) laying hens are chickens that have been raised from eggs with a history of negative Avian Influenza (AI) antibody results and negative antigen tests. This research aims to determine the effect of adding organic mineral premix to feed on the SAN performance of laying hens. This study used 72 laying hens aged 43 weeks which were divided into three treatment groups. Each treatment was repeated three times, each consisting of eight chickens, and kept for 35 days. The treatments given consisted of commercial feed without the addition of mineral premix as a control, commercial feed with the addition of 0.25% mineral premix, and commercial feed with the addition of 0.50% mineral premix. The parameters observed were egg production, feed consumption, feed conversion ratio and AI subtype H5 antibody titer results. The data analysis used was a one-way completely randomized design. The results of the study showed that giving mineral premix feed up to 0.50% did not affect the performance of SAN laying hens, so that the addition of mineral premix in feed up to 0.50% has not been able to increase the egg production of SAN hens, but is still able to produce eggs that are suitable as a medium viral AI H5N1.