فهرست مطالب habib cheraghi

The present study aimed to investigate the effects of N-carbamylglutamate administration on carcass and liver weights in adult male rats exposed to nicotine.

Forty adult male rats were randomly divided into four groups of ten rats each. The treatment groups were as follows: 1- Control group, 2- Nicotine group (2 mg/kg/day), 3- N-carbamylglutamate group (500 mg/kg/day administered orally), and 4- Nicotine and N-carbamylglutamate group (2 mg/kg/day nicotine and 500 mg/kg/day N-carbamylglutamate). On the day of euthanasia, the animals were anesthetized with a combination of ketamine and xylazine, and their carcasses were dissected. Internal organs and liver tissue were weighed after separation. Data were analyzed using the GLM procedure of SAS statistical software (version 1/9) in a completely randomized design.

The results demonstrated that N-carbamylglutamate administration increased the body weight of the rats at slaughter. Moreover, co-administration of nicotine and N-carbamylglutamate significantly impacted liver and kidney weights, leading to a decrease in liver weight. Additionally, the weights of both right and left kidneys were reduced in the nicotine and N-carbamylglutamate group compared to the control group.

Long-term nicotine consumption can induce structural alterations in the liver and kidneys. Also, administration of N-carbamylglutamate appears to mitigate the structural and functional changes in liver tissue caused by nicotine exposure in adult rats.

The presence of parasites in the digestive system causes various lesions that vary in severity depending on the type and number of parasites. These disorders include diarrhea, anorexia, weakness, weight loss, decrease in animal production, decrease in absorption of food, and in acute and super acute forms cause death. Considering the importance of the infection of sheep with various gastrointestinal parasites, the purpose of this research was to investigate the effect of raw garlic on the intestinal parasites of sheep.

This experiment was conducted for 2 months from the first of November to the end of December. For this project, 40 sheep with an average weight of 58.5 kg (Averaged) were used. Animals were divided into the control group, the positive control group (drug recipient), the group receiving 10 grams of garlic (per head), and the group receiving 20 grams of garlic (per head). For this research, in addition to counting the number of parasite eggs by flotation method, the Famacha test and hematocrit test were performed and for data analysis, CRD completely random design was used.

The results showed that the Famacha test of sheep receiving garlic decreased (P<0.05) However, the results of the hematocrit test of sheep were not significantly different from the control (P>0.05). Also, the addition of garlic to the diet of adult sheep decreased the number of Strongell, Marshalalgia, Nematodirus, Trichius, and the total number of parasite eggs per gram of feces (EPG), which was significant (P<0.05). In general, it can be said that adding 20 grams of garlic to the diet reduced the number of parasite eggs.

The results of the present research show that the amount of consumption of English eggs in sheep that are used with anti-parasitic drugs is very high. For this purpose, anti-parasitic drugs or medicinal plants that have anti-parasitic effects should be used. As found in this research, the use of high levels of raw garlic in the diet reduces digestive parasites and also increases blood mass.

The purpose of this project is to investigate the genetic resistance of Ghezel and Ghezel-Romanov lamb to gastrointestinal parasites in East Azerbaijan province. For this study, were used 10 male and female Ghezel lambs and 10 male and female Ghezel-Romanov lambs. The anti parasitic drug was administered on day of the test and then 2 weeks later. The studied traits included: Famacha test, hematocrit test, fecal score and number of nematode eggs per gram of feces. Data were analyzed using SAS software in a completely randomized design. The results showed that the Famacha test was significant in male and female Ghezel and Ghezel-Romanov mixed breeds (p<0.05). number of nematode eggs in male and female Ghezel-Romanov lambs had a significant decrease compared to Ghezel lambs (p<0.05). number of parasite eggs in Ghezel-Romanov lambs was lower than Ghezel breed, in which male Ghezel-Romanov lambs had the lowest number of parasite eggs (16.2) (p<0.05). Crossbreeding of Ghezel and Romanov increases the relative resistance to gastrointestinal nematodes in terms of traits measured in this study.

This study was performed to compare the effect of using 3 different estrus synchronization methods (Ovsynch, Co-Synch and Prostaglandin) on the conception rate of subfertile dairy cows. Fifty one subfertile Holstein dairy cows with parity ranging from 1 to 7 were enrolled in this study. Cows were allocated to three groups Ovsynch (n=10), Co-Synch (n=27) and Prostaglandin (n=14). Cows in the Ovsynch group underwent a standard Ovsynch protocol (GnRH analogue on Day 0, PGF2α analogue on Day 7 and GnRH analogue on Day 9), then they were artificially inseminated approximately 16 hours after the second GnRH treatment. The same procedure was done for cows in Co-Synch group, but artificial insemination took place immediately after the last injection. Cows in prostaglandin group underwent a PG protocol (PGF2α, on Day 0 and 12), and artificial insemination was done about 72 hours after the second PGF2α injection. Pregnancy diagnosis was performed 60 days after insemination via rectal examination. By using logistic procedure of SAS 9.1 software, the effects of treatment, season, parity, animal, age and open days were analyzed. The analysis of variables related to animal and the measured effects on pregnancy proved that none of the evaluated parameters were significant. Hence, we cannot declare which of the estrus synchronization methods is suitable to increase pregnancy rate. Further studies with more replicates are required to choose the best method.

Two hundred and forty one-day-old male broilers (Ross-308) in 6 treatments with 4 replicates and 10 birds in each replicate were used in this experiment. Dietary treatments consisted of: 1)diet with 5% vegetable oil (T1), 2) diet with 5% vegetable oil 300mg/kg L-carnitine (T2), 3)diet with 5% animal fat (T3), 4)­­diet with 5% animal fat 300mg/kg L-carnitine (T4), 4)­diet whit mixed vegetable and animal fat (equal to 2.5%) (T5), 5)­ diet whit mixed vegetable and animal fat (equal to 2.5%) 300mg/kg L-carnitine (T6). The diets with L-carnitine showed a significant effect on body weight in grower and whole growth period (p0.05). Also adding L-carnitine had a significant effect on HI Newcastle titer on the 32nd day (p0.05).