Effects of diet form and particle size on performance, digestive tract development and intestinal mast cell numbers in young broiler chicks

2016 ◽  
Author(s):  
S.M. Hosseini ◽  
M. Bashtani ◽  
H. Nazarizadeh ◽  
M. Manafi
Keyword(s):  
Particle Size ◽  
Mast Cell ◽  
Digestive Tract ◽  
Broiler Chicks ◽  
Cell Numbers

Multinucleate cell angiohistiocytoma: a fibrohistiocytic proliferation with increased mast cell numbers and vascular hyperplasia

2002 ◽  
Vol 29 (4) ◽  
pp. 232-237 ◽  
Author(s):  
◽  
María-Teresa Fernández-Figueras ◽  
Isabel Bielsa ◽  
Betlem Lloveras ◽  
Keyword(s):  
Mast Cell ◽  
Multinucleate Cell ◽  
Cell Numbers

Influence of particle size and microbial phytase supplementation on the performance, nutrient utilisation and digestive tract parameters of broiler starters

2009 ◽  
Vol 49 (8) ◽  
pp. 704 ◽  
Author(s):  
A. M. Amerah ◽  
V. Ravindran
Keyword(s):  
Particle Size ◽  
Weight Gain ◽  
Digestive Tract ◽  
Feed Intake ◽  
Coarse Particle ◽  
Hammer Mill ◽  
Particle Sizes ◽  
Broiler Performance ◽  
Nutrient Utilisation ◽  
Microbial Phytase

The aim of the present experiment was to examine the interaction between particle size and microbial phytase supplementation on the performance, nutrient utilisation and digestive tract development of broiler starters fed maize-based diets. The experimental design was a 2 × 2 factorial arrangement of treatments evaluating two maize particle sizes (medium and coarse) and two levels of phytase supplementation (without or with 500 phytase units/kg diet). The two particle sizes were achieved by grinding the whole maize in a hammer mill to pass through 3- and 7-mm screens, respectively. Broiler starter diets, based on maize and soybean meal, were formulated to meet recommended requirements for major nutrients, except phosphorus. Each of the four diets was fed ad libitum to six pens of eight male broilers each, from day 1 to day 21 post-hatching. Phytase supplementation increased (P < 0.001) the feed intake and weight gain, and lowered (P < 0.05) feed per gain in both medium and coarse particle size diets. Coarse grinding improved (P < 0.05) weight gain, but had no effect (P > 0.05) on feed intake and feed per gain. No interactions (P > 0.05) between phytase supplementation and particle size were observed for any of the performance parameters. Phytase supplementation increased (P < 0.001) ileal phosphorus digestibility and toe ash content of birds fed the medium particle size diet, but had no effect in those fed the coarse particle size diet. Apparent metabolisable energy and ileal digestibility of calcium and nitrogen were not influenced by particle size or phytase supplementation. The present findings suggest that the effectiveness of supplemental phytase on broiler performance is not influenced by the particle size of maize.

Increased Mast Cell Numbers in the Sclerotic Skin of Porphyria cutanea tarda

Dermatology ◽  
1989 ◽  
Vol 178 (2) ◽  
pp. 75-78 ◽  
Author(s):  
Wakio Torinuki ◽  
Kazuhiro Kudoh ◽  
Hachiro Tagami
Keyword(s):  
Mast Cell ◽  
Porphyria Cutanea Tarda ◽  
Cell Numbers

Testicular serotonin is related to mast cells but not to Leydig cells in the rat

1995 ◽  
Vol 146 (1) ◽  
pp. 15-21 ◽  
Author(s):  
R Aguilar ◽  
F Antón ◽  
C Bellido ◽  
E Aguilar ◽  
F Gaytan
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Leydig Cell ◽  
Leydig Cells ◽  
Interstitial Fluid ◽  
Ventral Prostate ◽  
Adult Rats ◽  
Cell Numbers ◽  
Oestradiol Benzoate ◽  
Testicular Capsule

Abstract Testicular serotonin (5HT) concentrations were determined by HPLC in the testes of rats treated neonatally with oestradiol benzoate (EB) and in adult rats treated with the Leydig cell cytotoxic ethylene dimethane sulphonate (EDS). 5HT concentrations were related to mast cell numbers. EB-treated rats showed an accumulation of mast cells in the testes at 35 and 70 days of age and increased 5HT concentrations in both the interstitial fluid and the testicular capsule, whereas no increases in 5HT concentrations or in the number of mast cells were found for the ventral prostate of these animals. On the contrary, 5HT concentrations were not related to the number of Leydig cells. In EB-treated rats, in which Leydig cells were nearly absent at 35 days of age, 5HT concentrations were significantly increased. Furthermore, EDS-treated rats did not show significant changes in 5HT concentrations, in spite of the elimination of Leydig cells. These data suggest that mast cells are a major source of serotonin in the rat testis. Journal of Endocrinology (1995) 146, 15–21

Rapid increase in mast cell numbers in canine central and peripheral airways

1988 ◽  
Vol 65 (1) ◽  
pp. 445-451 ◽  
Author(s):  
C. R. Turner ◽  
J. Kolbe ◽  
E. W. Spannhake
Keyword(s):  
Mast Cell ◽  
Airway Epithelium ◽  
Time Course ◽  
Isotonic Saline ◽  
Cell Movement ◽  
Cell Number ◽  
Small Airways ◽  
Cell Numbers ◽  
Peripheral Airways ◽  
Cell Counts

In preliminary studies of antigen-induced airway inflammation, we noted an apparent increase in peribronchiolar mast cell number. Experiments were thus undertaken to investigate the nature of this migration of mast cells into the central and peripheral airway epithelium and to determine its time course. The tracheae and small airways of 10 anesthetized mongrel dogs were exposed via a bronchoscope to Ascaris suum antigen (Ag), fMet-Leu-Phe (fMLP), ovalbumin (OVA), and isotonic saline (SAL). In the central airways, all stimuli provoked a significant increase (P less than 0.05) in mast cell numbers at the base of the airway epithelium within 3 h. In the peripheral airways, only Ag aerosol stimulated a significant mast cell increase compared with unexposed tissue. In a second series of experiments, the trachea of seven dogs were exposed to 0.026, 0.26, and 2.6 micrograms of Ag. The tissue was collected at 1, 3, 6, and 10 h after exposure. In these experiments, there was a significant mast cell increase seen within 1 h but it was not dose dependent. By 6-10 h after exposure, mast cell counts were not significantly different from the unexposed condition, which is consistent with the idea that some of the cells either degranulated or migrated into the airway lumen. We conclude that mast cell migration is an acute response that can be demonstrated within 1 h of stimulation with Ag. The observation that nonimmunological stimuli may, in some cases, also stimulate mast cell movement affords the possibility that this process represents a generalized response to airway irritation.

Mast cell numbers in the esophagus are increased in association with specialized intestinal metaplasia

1995 ◽  
Vol 108 (4) ◽  
pp. A159 ◽  
Author(s):  
F. Marinelli ◽  
R. Odze ◽  
G.T. Furuta ◽  
S. Spechler ◽  
B.K. Wershil
Keyword(s):  
Mast Cell ◽  
Intestinal Metaplasia ◽  
Cell Numbers ◽  
Specialized Intestinal Metaplasia

Mast cell numbers in incisional wounds in rat skin as a function of distance, time and treatment

1983 ◽  
Vol 108 (2) ◽  
pp. 179-187 ◽  
Author(s):  
M.A. PERSINGER ◽  
PATRICIA LEPAGE ◽  
J.-P. SIMARD ◽  
G.H. PARKER
Keyword(s):  
Mast Cell ◽  
Rat Skin ◽  
Cell Numbers

Seasonal allergic conjunctivitis is accompanied by increased mast cell numbers in the absence of leucocyte infiltration

1997 ◽  
Vol 27 (9) ◽  
pp. 1060-1066 ◽  
Author(s):  
D. F. ANDERSON ◽  
J. D. A. MACLEOD ◽  
S. M. BADDELEY ◽  
A. S. BACON ◽  
J. I. McGILL ◽  
...  
Keyword(s):  
Mast Cell ◽  
Allergic Conjunctivitis ◽  
Cell Numbers ◽  
Seasonal Allergic Conjunctivitis ◽  
Leucocyte Infiltration
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