Our primary objective was to improve on an existing model for the individual weekly egg production curve by modeling the curve as a sum of logistic functions: one for the increasing phase of production and a sum for the decreasing phases. To illustrate the model, we used four data sets from two pairs of individuals. For these data, the model consisted of an increasing phase and a single decreas...

The effects of moulting and age on egg geometry were evaluated during three age groups in four varities of Aseel chicken. For this purpose, a total of 168 eggs from four varieties of Aseel hens (Mushki, Lakha, Mianwali and Peshawari), each having 3 age groups (young, 50-67 weeks; medium, 80 -97 weeks and old, 115-132 weeks) were collected during pre and post-moult phases. The data on egg geomet...

Indigenous chickens (IC) are mainly raised by resource poor rural households in developing countries [1]. Although they are of low genetic potential compared to the commercial breeds, IC play a vital role in livelihoods of farmers and contribute significantly to food security and income [1]. IC dominates in most smallholder farms in Malawi and they are deemed less productive but appear to be ad...

colour is one of the most important quality factors that can influence and determine the shelf life of canned chicken kebab. colour change is considered as unsuitable distasteful to consumers, indicating the end of a product's shelf life. in this study quality aspects of samples were examined over one month intervals after being prepared and while being stored under accelerated (44 °c) con...

California legislation outlawed the use and sale of battery cages for egg-laying hens in 2015. While a number of ex ante studies projected the effects of the housing prohibitions, the ultimate ex post effects are unknown. Using a price series reported by the USDA, we study the movement of daily egg prices in California and the United States before and after the law’s implementation. Depending o...

Welfare issues surrounding intensive farming of layer hens have long been a point of contention for producers and consumers of chicken eggs. These concerns centre mainly on whether the production advantages of conventional cage-based systems can justify the lack of environmental enrichment provided to layer hens. These issues came to a head with the 1999 announcement that conventional cages wil...

An experiment was conducted to elucidate the effects of turmeric powder supplementation on egg production performance of old laying hens (80 weeks of age). There were 40 hens of Hysex Brown strain used in the study. They were caged individually, and randomly divided into 4 treatment groups of diet containing 0 (control), 1, 2 and 4 % oven dried turmeric powder for 3 periods of 4 weeks; Egg prod...

A study was conducted to test the inclusion rate of corn dried distillers grains with solubles (DDGS) in laying hen diets on egg production (EP) responses for a full production cycle. A total of 288 Bovan Single Comb White Leghorn laying hens were fed diets containing 0, 5, 10, 15, 20, or 25% DDGS from 24 to 46 wk (phase 1) and 47 to 76 wk (phase 2) of age. The diets were formulated to be isoca...

Development of village chicken production can be a sustainable way of helping to meet the welfare needs of rural populations and raise their living standards. There is a dearth of information on research conducted to characterize, understand and develop the village chicken production systems in Zimbabwe. This review focuses on constraints, opportunities and research needs for the improvement of...

viral infections are the cause of great economic losses in the poultry industry. development of appropriate reagents and serological diagnostic kits will help to control these infections. the aim of this study is to prepare a peroxidase labeled anti-chicken igg using a mab (5b8) against chicken igg, for detection of chicken antibodies in elisa. hybridoma cells producing the mab 5b8 were culture...