Abstract :

The aim of the research is to examine the effect of adding additive products to feed on the physiological responses of broilers during 1 (one) rearing period including rectal temperature, shank temperature, comb temperature, respiratory frequency and heart rate frequency. The research was conducted from September 21 to October 26, 2024 in Mr. Soleh’s Farm. Kidal Village, Tumpang District, Malang Regency, East Java. The material used in this study was non-sexing DOC (Day Old Chick) strain Lohmann from PT Japfa Comfeed Tbk. A total of 300 broilers with a body weight diversity coefficient of less than 10% were reared for 35 days. This study used 6 treatment groups, each consisting of 5 replicates including T0 (Basal feed as control treatment), T1 (Basal feed + zinc bacitracin 0.1% as positive control treatment), T2 (Basal feed + 0.05% feed additive product), T3 (Basal feed + 0.10% feed additive product), T4 (Basal feed + 0.15% feed additive product) and T5 (Basal feed + 0.20% feed additive product). The data obtained were analyzed using analysis of variance (ANOVA) and continued with Duncan’s Multiple Range Test (DMRT) if there was a significant effect. The results showed that the addition of DPKFA-based feed additive products with high lauric acid content in the feed did not significantly affect the physiological response of broilers (P>0.05). The provision of additives with the highest concentration helps to optimize the physiological response of broilers so that this product can be recommended as a substitute for the role of AGP to support the performance of broiler production and health.

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Keywords :

broiler, feed additive, lauric acid, physiological responses

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