The digestive organs comprise the endodermal epithelium and mesenchyme derived from the splanchnic mesoderm. For morphogenesis and cytodifferentiation of these organs, epithelial-mesenchymal interactions are essential (Le Douarin, 1975; Wessels, 1977; Haffen et al., 1987; Yasugi and Mizuno, 1990; Yasugi, 1993). We have been studying the mechanisms of differentiation of the proventricular epithe...

Potter, K. N., Williams, J. R., Larney, F. J. and Bullock, M. S. 1998. Evaluation of EPIC’s wind erosion submodel using data from southern Alberta. Can. J. Soil Sci. 78: 485–492. Wind erosion models have been used to assess policy impacts on soil erosion, but validation of models has been difficult until recently. We evaluated the Environmental Policy Integrated Climate (EPIC) wind erosion subm...

To investigate the effect of bactocell and protexin probiotics on performance and carcass characteristics of broilers, an experiment was conducted with completely randomized design with 3 treatments in 4 replicates and 25 day old female cobb 500 broiler chickens for each replicate for fortytwo days. Treatments include: 1-Control diet (without probiotics), 2-Control diet containing bactocell pro...

A 42-days trial was conducted to study the influence of exogenous enzymes supplementation to sunflower-corn based diet on digestive and performance traits in broilers. There were three treatments (control, Hamecozyme and Rovabio supplemented diets) and three replicates (20 broiler chicks per replicate) per treatment. At the end of the trial, birds fed the enzymes supplemented diets ate more and...

Caldesmon phosphatase was identified in chicken gizzard smooth muscle by using as substrates caldesmon phosphorylated at different sites by protein kinase C, Ca2+/calmodulin-dependent protein kinase II and cdc2 kinase. Most (90 %) of the phosphatase activity was recovered in the cytosolic fraction. Gel filtration after (NH4)2SO4 fractionation of the cytosolic fraction revealed a single major pe...

The aim of the present experiment was to examine the effect of different levels of rapeseed meal (RSM) and sunflower meal (SFM) and enzyme combination (endoxylanase and β-glucanase) on the production performance, carcass quality, gizzard development and digesta viscosity of broiler chickens. The experimental design was a 3×2 factorial arrangement of treatments evaluating three diet types contai...

Dietary structural material has been reported to improve broiler live performance and gastrointestinal tract (GIT) function. In this 50 d cage study, the effects of coarsely ground corn (CC) inclusion on broiler live performance, GIT development, apparent ileal digestibility (AID) of energy and nitrogen (N), and digesta particle size distribution and retention time were investigated. This study...

An experiment was conducted to determine the influence of 2 levels of dietary Ca from limestone and 3 levels of phytase on broiler performance, bone ash, gastrointestinal pH, and apparent ileal digestibility (AID) of Ca, P, and amino acids. Cobb 500 broilers (n = 576) were allowed access to one of 6 corn-soy diets from 0 to 16 d. Experimental diets contained 1.03% or 0.64% Ca from limestone and...

The paper summarizes information on the identity of plant fragments from 14 moa gizzard contents samples and outlines some features of moa diet, feeding habits and habitat which may be inferred from the investigation of these samples. Most of the moa specimens (possibly all of them) were from the genus Dinornis. Twigs of shrubs and trees, which were sheared off, formed the predominant part of t...

– The Upland Sandpiper (Bartramia longicauda) is a migratory shorebird that inhabits grasslands at the breeding and non-breeding grounds. The trophic ecology of the species is poorly known, but it is thought to be insectivorous. In this study, we describe the diet of the Upland Sandpiper and its temporal variation in grasslands of northern Uruguay. From 2008 to 2012, we collected 67 feces at ni...