EFFECT OF DIFFERENT DOSES OF A CHICKEN AND QUAIL MANURE MIXTURE ON THE POPULATION GROWTH OF Daphnia sp.

Abstract

This study aimed to analyze the effect of different fertilizer doses using a combination of 25% chicken manure and 75% quail manure on the population growth of Daphnia sp., as well as to determine the optimal dose of the combined fertilizer for Daphnia sp. population growth. The study was conducted for 16 days using a Completely Randomized Design (CRD) consisting of five treatments with three replications, namely P1 (0 g/L), P2 (2 g/L), P3 (4 g/L), P4 (6 g/L), and P5 (8 g/L). The observed parameters included life cycle, population growth, population density, body length growth, and water quality. The results showed that the application of different doses of combined chicken manure and quail manure significantly affected the population density of Daphnia sp. (p < 0.05), but did not significantly affect the body length growth of Daphnia sp. (p > 0.05). The highest population density was obtained in the P5 treatment (8 g/L) with a value of 1,337 ind/L. The population growth of Daphnia sp. showed adaptation, exponential, stationary, and death phases, while its life cycle consisted of egg, incubation, neonate, juvenile, and adult phases. All water quality parameters were within the optimal ranged. Based on the results of the study, a dose of 8 g/L was the best dose for increasing the population density of Daphnia sp. in a culture medium with a combination of 25% chicken manure and 75% quail manure.