Determination of total phenolics, flavonoids, and testing of antioxidant and antibacterial activities of red ginger ( var. Rubrum).

Objective: The purpose of this study was to select the active fraction of red ginger for its antioxidant and antibacterial activities against (AMC 6934), (AMC 7923), (AMC 8973), and (AMC 5761).

Materials And Methods: A total of 2 kg of dry red ginger rhizome powder was macerated in stages with different levels of solvent polarity to extract the chemical composition within the red ginger powder sample. The extraction process begins with a non-polar solvent (n-hexane) by soaking the red ginger powder sample for 3 × 24 h.

Antioxidant and antibacterial activities of the rhizome extract of extracted using some organic solvents.

Objective: This research aims to identify the effect of various organic solvents such as n-hexane, ethyl acetate (EtOAc), and methanol (MeOH) on the antioxidant and antibacterial activities of extract, against three Gram-positive bacteria, namely and , and three Gram-negative bacteria, namely and .

Materials And Methods: As much as 1 kg of white turmeric rhizome () was extracted two times for 24 h using 3 l of MeOH before evaporating. The extract was then fractionated using n-hexane six times per 2 h, with each volume of 500 ml, and continued with the EtOAc fractionation.

The impact of various calcium sources offered to Arabic hens during their early-laying stage on calcium consumption and egg production.

Objective: The research was conducted to calculate feed, calcium (Ca) intake, Ca requirements, and egg production for Arabic hens during the early egg-laying period.

Materials And Methods: A total of 135 30-week-old Silver female Arabic pullets were randomly allocated to one of three treatments with five replicate cages with a semi-scavenging system of nine pullets per cage in a completely randomized design and allowed to choose Ca from limestone and oyster shells. As a control (T1), pullets were only given a complete feed with Ca and phosphorus percentages according to Hy-line International in 2018.

Dietary self-selection by broilers at normal and high temperature changes feed intake behavior, nutrient intake, and performance.

Self-selection assumes that at high ambient temperature, birds are able to select a diet from different sources to minimize the heat load associated with the ingested nutrient metabolism. The objective was to test the hypothesis that young chickens are able to compose an adequate ration by adjusting dietary nutrient intake from 3 different diets that vary in energy and in protein contents from a cafeteria system at high temperature (HT; 31-32°C) and at normal temperature (NT; 31-21°C). Night temperature was set at 25°C at HT and at 18°C at NT and 12 h dark:12 h light.