The CO2 production rates from various animal species were measured as well as the ventilation rates (VR) in environmental rooms at Michigan State University over the course of 15 studies that considered dietary strategies to alter air emissions, including two dairy cow studies, four steer studies, two swine studies, one turkey study, four laying hen studies, and two broiler chicken studies. The...

Different stocking densities (SDs) or space allocations are being practiced in commercial laying-hen operations as an attempt to improve hen welfare. Information concerning the impact of SD on accumulated manure properties (e.g., moisture content) and thus ammonia (NH3) emissions is limited in the literature. Bird SD affects the amount of manure per unit of accumulated manure surface area, whic...

Microbial food safety of eggs has not been thoroughly investigated in Egypt. Pseudomonas species are among the most ubiquitous bacteria in the environment that may also contaminate eggs. To investigate the microbial burden of Pseudomonas species in eggs, one hundred composite samples (6 eggs in each) of table hen and duck eggs were prepares after they were collected from different shops and sup...

s of papers 55 230 Role of estrogen in avian osteoporosis. M. M. Beck*1 and K. K. Hansen2, 1University of Nebraska-Lincoln, Lincoln, NE, 2University of Nebraska Medical Center, Omaha, NE. One of the difficulties associated with commercial layer production is the development of osteoporosis in hens late in the production cycle. In light of this fact and because of the hen’s unique requirement fo...

AIM The present study was conducted to evaluate the performance of gray, brown, and white varieties of Japanese quail (Coturnix coturnix japonica) with respect to body weight, egg production, and egg quality traits in the coastal climatic condition of Odisha. MATERIALS AND METHODS A total of 500-day-old straight run Japanese quail chicks of three varieties, viz., gray, brown, and white were r...

Kurzfassung In diesem Artikel werden zwei Simulationen für Fußgängerverkehr vorgestellt. Beide beru-hen auf einem Zellularautomaten–Modell. Das erste Modell beschreibt die grundsätzliche Bewegung von Fußgängern zwei entgegengesetzter Laufrichtung in einem langen Gang. Das zweite Modell stellt eine Evakuierungssimulation dar, die für verschiedene Problem-stellungen angewandt wird.