جستجوی مقالات مرتبط با کلیدواژه « blood » در نشریات گروه « دامپزشکی »

Selenium is an essential element in dairy cattle, particulrarly for reproduction. The present study was conducted in order to determine the amount of selenium in the blood of different groups of cattle in Isfahan province industrial cattle farms and also the effect of season (summer and winter) on its concentration in the form of a randomized complete block design. The present study was investigated the blood selenium level in dairy cattle in Isfahan province. Also, the effect of season (summer and winter) on selenium values was studied. This experiment was carried out in a complete block randomized design for 553 cows in 17 farms from different regions of the Isfahan province. Acordingly, 553 cows were selected from 17 industrial cattle breeding units in different geographical parts of the province. The population of cows in each cattle farm wasere divided into five groups which included high producing cows (n=154), fresh cows (n=118), dry and pregnant heifers (n=121), non-pregnant heifers (n=81) and calves. Blood selenium concentration was indirectly assessed determined through the measurement of glutathione peroxidase activity by Alpha Classic Auto Analyzer. According to the results, the mean whole blood selenium concentration mean for high producing cows, fresh cows, dry and pregnant heifers, non-pregnant heifers and calves were measured at 0.21, 0.18, 0.24, 0.24, 0.21 mg/L, respectively. Dry and pregnant heifers and non-pregnant heifers with higher selenium concentration showed significant differences compared to other groups (P<0.05). The lowest selenium concentration was significantly observed for fresh cows (P<0.05). No significant differences were found among different groups of dairy cows in terms of peroxidase enzyme activity for glutathione peroxidase activity. The mean blood selenium concentrations in summer and winter with no significant differences were at 0.21± 0.08  (n=129) and 0.20±0.06  (n=174) mg/L, respectively which showed no significant effect of season on blood selenium level. Also, the comparison of the same group in different farms showed significant difference in terms of blood selenium levels s between them (P<0.05).Therefore, it is recommended to check the blood selenium level of dairy cattle and then ,use a selenium supplement under supervision of animal nutritionists.

This study was conducted to investigate some blood factors of Liza abu in two winter and summer seasons in Musa creek at Petrochemi, Ghanam, Zangi, Douragh, Patil and Sajafi as a control station. After catching fish by trawling, ?? pieces of fish were removed almost equally. In each turn, fish samples were anesthetized with ?ml of clove extract per liter of water and blood samples were taken immediately from the caudal vein using a heparined syringe. Then, the parameters were measured by conventional and usual laboratory methods and the mean of them was determined in two seasons at each station and analyzed statistically. Results showed that the number of white and red blood cells, hematocrit percentage, hemoglobin amount, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) in more pollution stations such as Petrochemi and Ghannam were significantly reduced compared to the control station (P

Balance in the amount of minerals in the aquatic animal’s diet is very important. Phosphorus is one of the most important minerals in fish and aquatic animal’s nutrition. Phosphorus is important not only for the proper growth and fish health, but also for excessive phosphorus excretion that may cause water pollution and algal bloom.

In this study the effects of adding monoammonium phosphate in the diet of fish (Cyprinus carpio Koi) and its comparison with monocalcium phosphate were investigated.

650 koi fish weighing 17 g were distributed in 15 tanks (5 treatments - each in three replicates) and mono-ammonium phosphate-fed diets at three levels (0.75, 1.5 and 3% of the diet), monocalcium phosphate in one level (3% of the diet) and a control group (no phosphorus supplementation) were fed for 8 weeks.

Growth indices and feed conversion ratio in fish fed 3% monoammonium phosphate showed the best results. The control group showed the lowest weight gain and the highest feed conversion ratio. Blood phosphorus was also significantly correlated with increasing monoammonium phosphate. The highest level of calcium in the blood was observed in the group fed monocalcium phosphate (3%).

Considering the improvement of growth and nutrition indices, adding 1.5 to 3% monoammonium phosphate in the diet of koi fish was suggested.

The aim of this experiment was to investigate the effect of processing date palm leaves with urea and enzyme on digestibility, rumination and some blood and rumen parameters of Arabian sheep. In this research, 16 Arabian sheep with an average age of 8 months and weight 28 ± 1.5 kg were used. The ratio of concentrate/forage in the treatments was 50:50. Treatments were including 1) diet contains wheat straw (control), 2) diet contains crude date palm leaves, 3) diet contains crude date palm leaves+ 3 g/kg Natuzyme enzyme and 4) diet contains date palm leaves processed with 4 % urea. In this experiment it is considered 21 days for adaptation and 14 days for sampling. At the end of the experiment, nutrient digestibility, feeding behavior and blood and rumen parameters were determined and the obtained data were analyzed in completely randomized design. Results showed feed intake, digestibility of dry matter and organic matter and blood cholesterol level were not influenced by experimental diets (P>0.05). However, digestibility of NDF and ADF, blood glucose and urea and ruminal ammonia concentration significantly increased in sheep fed with date palm leaves processed with urea (P