Mohammad amir Karimi torshizi Articles List

List of Articles Mohammad amir Karimi torshizi

Open Access Article
- Abstract Page
- Full-Text
1 - Comparative histomorphometric study of small intestine in broiler chicken using the closed-Clarke, opened-formalin and closed-formalin fixation methods
Aref Mahmoodtabar Mohammad Amir karimi Torshizi

Tissue fixation is a vital step in preparation of samples for histological studies and mistakes at this stage could lead to irreversible damage. The aim of this study was to compare the effect of three sample preparation-fixation methods on histomorphometic indices of s More

Tissue fixation is a vital step in preparation of samples for histological studies and mistakes at this stage could lead to irreversible damage. The aim of this study was to compare the effect of three sample preparation-fixation methods on histomorphometic indices of small intestine of broilers. Thirty 10 day old broilers of Ross 308 strain were used in the study. Segments of small intestine were washed and prepared as opened or closed sections. The closed sections were fixed in 10% saline-formalin. The opened samples were cut at the mesenteric line and were fixed by 10% saline-formalin. In Clarke’s fixation the ends of samples were sealed by string and Clarke’s solution was injected into the lumen. Fixed samples were subjected to paraffin embedding and 5 µm sections were cut using rotary microtome and sections were stained by Eosin-Hematoxylin and Alcian blue. In each section the villus height, villus thickness, crypt depth and goblets’ density were measured under light microscope and the villus surface index was also calculated. Data were subjected to ANOVA in a completely randomized design with three treatments and 30 observations. The results indicated that method of preparation-fixation had a significant effect on morphometric indices (p<0.01). The closed-formalin’s samples had the greatest villus height and crypt depth values in all three intestinal segments, while the lowest values were observed in closed-Clarke’s method (p<0.01). Closed-Clarke’s samples had the thickest villus in all three parts of small intestine followed by closed-formalin’s and opened-formalin’s samples (p<0.01). Villus surface area was highest in closed-formalin fixed samples (p<0.01). Considering simplicity of the method, low cost,  better mucosal protection and lack of severe tissue changes observed in closed-formalin’s method, this method was considered as a method of choice in histomorphometric studies of poultry small intestinal mucosa. Manuscript profile
Open Access Article
- Abstract Page
- Full-Text
2 - Study on the effect of Savory)Saturejakhuzestanica(essential oil and Polysorb toxin-binder against experimental aflatoxicosis in Japanese quail
homa arak mohammadamir karimitorshizi shaban rahimi

Anti-aflatoxicosis potential of dietary supplementation of savory essential oil and a commercial mycotoxin binder (Polysorb) was investigated by study of some internal organ weights, lipid oxidation of meat and liver lesions. A total of 144 male 21 days old Japanese qua More

Anti-aflatoxicosis potential of dietary supplementation of savory essential oil and a commercial mycotoxin binder (Polysorb) was investigated by study of some internal organ weights, lipid oxidation of meat and liver lesions. A total of 144 male 21 days old Japanese quails were divided into six treatments and 4 replicates (6 birds in each replication)and treated for 10 wks as follows: A-Negative control, B-Positive control-fed diet contaminated with aflatoxin B1 (2.5 PPM), C- Contaminated feed+300 PPM savory essential oil,D-Contaminated feed+ 600 PPM savory essential oil, E- Contaminated feed+ 900 PPM savory essential oil, F- Contaminated feed+ 2.5 g/kg Polysorb. At the end of the fourth and tenth weeks of experiment, two birds from each cage were randomly euthanized and relative weights of liver, spleen and bursa offabricius were determined and tissue samples of the liver were taken. The lipid oxidation in fresh and refrigerator meat samples were determined at the end of experiment. Use of 600 PPM of savory essential oil reduced the effects of aflatoxin on weights of bursa of fabricius and spleen. Highly intense fatty changes, large and small foci of hepatocellular degeneration and portal fibrosis caused by aflatoxin were observed in non-treated aflatoxicosis induced birds (group B). It seems that dietary supplementation of 600 PPM of savory essential oil and Polysorb can effectively reduce the toxic effects of aflatoxin B1 in Japanese quails. Manuscript profile

Open Access Article

Abstract Page

Full-Text

3 - Study on the effect of consumption period of fish oil on serum concentration of cholesterol and triglyceride and antibody response in broiler chicks
حسین Iravani M.A Karimi Torshizi بابک Khierkhah

The aim of the present study was to determine the optimal time of fish oil inclusion in broiler feed formulation on antibody response and concentration of serum cholesterol and triglyceride. A 49 day study was conducted on 600 one-day old chicks from a commercial hybrid More

The aim of the present study was to determine the optimal time of fish oil inclusion in broiler feed formulation on antibody response and concentration of serum cholesterol and triglyceride. A 49 day study was conducted on 600 one-day old chicks from a commercial hybrid (Ross) which were randomly allocated to 6 groups. The control group was fed a diet containing 5 % corn oil and in experimental groups the fish oil was substituted for corn oil from 2,3,4,5 and 6 weeks. Serum concentration of cholesterol and triglyceride were determined on days 37 and 44. Titer of antibody against sheep red blood cells (SRBC) were determined 7 days after immunization on days 30 and 37. Supplementation of diet by fish oil did not affect concentration of serum cholesterol. However, concentration of serum triglyceride decreased significantly (p<0.01). Titer of IgG against SRBC was affected in first injection (p<0.01) and the maximum antibody response was seen in control group and chickens feeding fish oil for 2 weeks, and antibody response decreased with increase of consumption length of fish oil. Titer of IgM in the second injection (p<0.05) were affected by dietary treatments. Chickens which were fed fish oil for 2, 3 and 4 weeks had higher antibody response than other treatments.   Manuscript profile

Current Issue

Published Issues

Menu

Browse

List of Articles Mohammad amir Karimi torshizi