this experiment was carried out to study the effect of manganese in four levels (30, 60, 90 and 120 mg/kg) and zinc in four levels (50, 100, 150 and 200 mg/kg) on shells with translucent areas, haugh unit, mortality, percentage of ash in eggshell and composition of eggshell in laying hens, in a completely randomized design and in a 4×4 (16 treatment) factorial arrangement, three hundred and twe...

Microbial communities present on eggshell surfaces of wild birds are weakly studied, especially their influence on embryo infection and, thus, egg viability. Bacterial density of wild bird eggshells is very low, and most DNA extraction protocols are frequently unsuccessful. We have efficiently adapted a chelex-based DNA isolation method for 16S ribosomal gene amplification from the total commun...

Calcium, an important mineral in bones, is widely available the form of calcium carbonate (CaCO₃) eggshells. However, tonnes eggshells have been wasted every year all around globe. The current work was aimed at valorizing eggshell waste and incorporating it as alternative Ca source for deficient people. Soup mixes (named 1-5) were formulated by varying ratio starch (4-12 g) vegetables (2-10 alo...

This paper presents algorithms based on image processing for detecting internal blood spots and eggshell dirt by processing acquired images from eggs under different illuminations. The algorithm can also detect the severity of dirt on eggshell. In order to carry out image processing and extract useful features of captured images of eggs by machine vision we developed an algorithm in HSI color s...

This research aimed to investigate the social skills in School of Children's Special Prison Institution Class II Bandung, Indonesia. study included six prison students high school between ages 15 and 18. In two meetings, a case was conducted using biology learning activities on issue eggshell waste. Field notes semi-structured interviews are used for collecting data. The collected data will be ...