جستجوی مقالات مرتبط با کلیدواژه "خرگوش" در نشریات گروه "علوم دام"

The domestic rabbit Oryctolagus cuniculus from the Leporidae family is a herbivorous mammal and their usual diet is plant sources. Rabbits can tolerate temperatures between 4 and 27 degrees; Of course, the recommended average temperature for them is between 16 and 22 degrees. The average pregnancy period for rabbits is 28 to 31 days. Different forages in rabbit diets affect its optimal growth performance. Rabbits need energy, fiber and protein in their diet. It is recommended to use fodder plants as well as tropical plants to feed rabbits, currently dry fodder such as alfalfa constitutes 40 to 80% of the rabbit's diet. Corn, wheat, barley, and alfalfa are plants with high energy levels, and therefore, the consumption of these plants in diets is very high. Due to the high price of alfalfa and barley, the cost of preparing feed increases, as a result of which the economic efficiency decreases. Tropical plants have a significant amount of protein, fat, minerals and carbohydrates that can affect growth and production. Among the tropical plants are Conocarpus erectus and myrtle. Cenocarpus erectus is a common ornamental plant in tropical and semi-tropical regions, which usually has a height of 1.5 to 4 meters. This plant contains bioactive compounds such as alkaloids, saponin, tannin, phenolic compounds, resin, terpenes, glycosides and antibacterial activity. Myrtle plant is a small shrub with evergreen leaves. Among the effective substances found in the plant, we can mention phenolic acids such as gallic acid, vanillic acid and ferulic acid, tannins, catechin and quercetin. Therefore, the purpose of this experiment was the effect of the use of myrtle and conocarpus plants in the diet of first-generation rabbits on digestibility, antioxidant capacity, blood parameters and microbial population of the digestive tract.

In this project, 12 breeding rabbits of New Zealand breed (10 females and 2 males) were tested, for this purpose, after 28 days of rabbit pregnancy period and 30 days of lactation period of born rabbits, the considered treatments were applied to the born rabbits (each treatment consisted of five repetitions). The treatments include: 1 control treatment, 2 treatments receiving 25% of myrtle plant and 3 treatments receiving 25% of conocarpus plant in the form of completely randomized design. The experiment was conducted on born rabbits for 30 days, and the average weight of the tested rabbits was 250 grams. At the end of the experiment, the digestibility of dry matter, crude protein, insoluble fibers in neutral detergent, insoluble fibers in acidic and organic detergents, antioxidant activity of meat during storage in the refrigerator and in the freezer, microbial population of the digestive tract (population of Lactobacillus, E. coli and coliform bacteria) ) and blood parameters including cholesterol, triglyceride, low-density lipoprotein, high-density lipoprotein, glucose, aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase concentrations were measured.

The effect of the use of myrtle and conocarpus on the digestibility of tested rabbits, the test results showed that Myrtle and conocarpus plants result in decreasing of the digestibility of dry matter, crude protein, neutral detergent fiber and acid detergent fiber (P<0.05). he results of the treatments on the microbial population showed that the populations of Lactobacillus, E. coli and coliforms in the cecum of rabbits were placed on Mord and Cenocarpus treatments (p > 0.05). The effect of myrtle and conocarpus plant on the antioxidant level of meat during storage in the refrigerator showed that the meat of rabbits fed with myrtle plant had a lower concentration of malondialdehyde and more antioxidant properties than the meat of rabbits fed with conocarpus plant (p< 0.05). The results of the experiment on the effect of treatments on blood parameters showed that the concentration of cholesterol, triglyceride, low-density lipoprotein, high-density lipoprotein, and glucose in the treatment using myrtle leaves and the treatment using conocarpus plant were significantly higher than the control treatment. decreased (p<0.05), but regarding the effect of treatments on liver enzymes, the test results showed that there was no significant difference in the concentration of aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase between the treatments using myrtle and conocarpus compared to the control treatment (p> 0/05).

The results of the experiment showed that using myrtle plant and conocarpus plant as a substitute for part of alfalfa in the diet of newborn rabbits had an effect on digestibility, malondialdehyde concentration and blood parameters, and according to the positive effects of mord plant and conocarpus plant on the antioxidant concentration of rabbit meat. Whether during storage in the refrigerator or during the storage of rabbit meat in the freezer and blood biochemical parameters, and also considering the cheapness and availability of these plants in some areas, especially in Khuzestan, it can be concluded that the use of 25% of Sometimes myrtle and conocarpus have a positive effect as an effective antioxidant and a herbal supplement in the diet.

Bezoar is an intraluminal mass in the gastrointestinal tract that is formed by the accumulation of indigestible materials. Trichobezoar is the accumulation of hair and fur that passes through the esophagus and becomes a foreign body in the stomach or intestines. The pyloric region is a frequent site of obstruction which can block the gastric outlet. The notability of diet in rabbits is so high that poor nutrition with low fiber, protein, carbohydrates and high fat result in bloating and accumulation.

In the studied animal, clinical signs, graphs and blood analysis revealed an accumulation of gas in the stomach and intestines and an aggregation of foreign body. The Exploratory laparotomy technique was approved to correct the complication.

After induction of anesthesia and a ventral midline incision, the furry and greasy masses were removed and the incision area was sutured. The animal began to gain weight after 14 days by correcting the diet and kept on living.

It is recommended that to preparing starter feed due to a limited capacity for hydrolysis of several components at early ages, high amounts of digestible foods which are rich in fat and protein, with low fiber should be used to prevent disorders such as bloating and obstruction.

This study compares the effects of intraperitoneal use of honey and dexamethasone to prevent the formation of intra-abdominal adhesions after surgery in rabbits. A total of 24 New Zealand white rabbits underwent laparotomy. To create adhesions in the abdomen, the serous surface of the descending colon was rubbed 100 times with a dry tampon so that patchy spots appeared on its surface. Then, 10 parallel incisions with a length of 3 cm were made on the left wall of the abdomen. At this stage, the rabbits were divided into four equal groups of 6.In group 1 (control)an amount of 5 ml of normal saline - group 2 (dexamethasone)an amount of 5.4 ml of normal saline + 0.6 mg / kg dexamethasone (0.5 ml) - in group 3 (honey)an amount of 5 ml of honey and in group 4 (Honey - Dexamethasone) 4.5 ml of honey + 0.6 mg / kg dexamethasone (0.5 ml) was poured into the abdominal cavity.The rabbit's abdominal muscles and skin were then sewn normally and cared for 21 days. After 21 days, all rabbits were sacrificed painlessly by anesthesia injection and after necropsy the degree of intra-abdominal adhesions was determined macroscopically. Then, for histopathological examinations and determination of fibrosis, a tissue sample was taken from the abdominal wall and colon. The control group showed a high degree of adhesion between the abdominal wall and organs as well as large masses of adhesion. In the dexamethasone group, the adhesions were thick and narrow bands between the internal organs of the abdomen. In the honey and honey-dexamethasone groups, very little adhesions (up to two rabbits) were observed in the form of very thin and limited bands. The results of this study show that intraperitoneal use of honey and dexamethasone reduces intra-abdominal adhesions after surgery in rabbits. But honey is more effective than dexamethasone to prevent adhesions and reduce peritoneal inflammatory reactions as well as wound healing.

In this study, 30 male rabbits weighing 900 - 1000 g were randomly divided into 6 groups (positive control, negative control and test). After general anesthesia using a combination injection of ketamine 50 mg / kg and xylazine 5 mg / kg intraperitoneally to create ulcers in the rabbit skin a 10 mm circular punch was made. The wounds was measured with the aid of millimeter papers on the first, third, sixth, ninth, twelfth, fifteenth, eighteenth, and twenty-first days after surgery. This measurement is made at a specific time of day by a specific person. Complete recovery time was measured in negative, positive control and test samples. Then, on day 21, the wound was sampled. The specimens were subjected to histopathological studies after fixation of dewatering and staining.According to the results, there was no significant difference between control group and T1 group (P <0.05), but there was a significant difference between control group and T2, T3, T4, T5 group (P <0.05). The highest difference was between T5 and control group. It can be said that methanolic extract of cardamom at a dose of 400 mg / kg topical and feeding on cardamom powder pellets was more effective than all groups. Also, migration of epithelial tissue and reduction of wound openings in group T5 on days 15 to 21 were higher than other groups. Also, cardamom powder as the last plate of food significantly decreased glucose in diabetic groups (P <0.05). Cardamom lowers blood sugar by antioxidants such as flanoids. According to the results of this study, cardamom extract has a high ability to heal full-thickness wounds compared to chemical drugs.

IIn this study, the effect of different levels of Scrophularia striata extract on the parameters of laboratory gas production, the concentration of volatile fatty acids and the activity of hydrolytic enzymes on the contents of the cecum of adult male rabbits were investigated. For this purpose, 20 New Zealand rabbits weighing approximately 1.6 ± 0.2 kg (5 months and up) were used in a completely randomized design with four treatments and five replications. Treatments included 1) without receiving Scrophularia striata extract (control), and supplementing the control diet with levels of 2) 200, 3) 300 and 4) 400 mg of Scrophularia striata extract per kg of body weight. The control group received 2 ml of water instead of the extract. At the end of the experimental period and after slaughter of rabbits, the contents of their cecum were sampled and the parameters of gas production, concentration of volatile fatty acids and activity of hydrolytic enzymes of cecal sample were determined. The results showed that consumption of Scrophularia striata extract reduced the volume of gas produced (p<0.05) and the total amount of volatile fatty acids (p= 0.01). Consumption of Scrophularia striata extract increased the activity of alpha-amylase (p= 0.02) and microcrystalline cellulase (p= 0.01) linearly, but did not significant e ffect on carboxymethylcellulose and filter paper decomposition activity. In general, the extract of the Scrophularia striata was able to affect the microbial and enzymatic activities of the rabbit colon, so that the microbial activity decreased with the consumption of this plant and eventually led to less gas production and reduced production of volatile fatty acids.production and reduced production of volatile fatty acids.

The pancreas contains both exocrine and endocrine components that secrete digestive enzymes and peptide hormones respectively. These two components are very different structurally and functionally but are intermingled within the gland. In the present study، the pancreases of 15 adult healthy animals (5 per each species) were used. After dissecting them، the pancreas of animals fixed in 10% neutral buffered formalin and then subjected to routine tissue processing for light microscopy. Different structures of the stroma and parenchyma of pancreas in hamster، guinea pig and rabbit were histomorphometrically studied using micrometrical method. All of parameters between three animals were analyzed and compared using ANOVA test. Results showed that the pancreas in three species was lobulated and compound tubulo-acinar gland having exocrine and endocrine portions. In the present study، the secretory acini of pancreas were oval or irregularly round and composed of 5 to 7 pyramidal cells arranged around a small central lumen. The mean percent of the islets of langerhans to the total pancreatic tissue in guinea pig (29. 8 ± 16. 04) was more than rabbit (9. 55 ± 4. 60) and hamster (10. 8 ± 3. 71). In hamster، diameter of islet was more than other animals. There was significant difference in diameter of islet of langerhans between animals (P<0. 001). It was observed 191. 30 µm، 41. 56 µm and 54. 60 µm in hamster، rabbit and guinea pig respectively.

In ancient Iranian medical texts such as “QANUN of AVICENNA” different herbal compounds has suggested. In this study, the healing effects of Calendula are compared with Astragalus fasciculifolius Aqueous Resin Extract (AfARE), histopathologically. 15 adult rabbits (randomly divided into three groups) were selected and a round wound was created with almost 1cm diagonal in diameter on the skin of their backs. Total treatment period was specified as 3, 7, 14 and 28 days. The evaluation was on the basis of wound construction, granulation formation and secondary infection occurrence and grading of these factors was marked by I, II and III. First and second groups were respectively treated with (AfARE) and Calendula topical ointment and third group (control g.) received no treatment. In the first group, treatment process was satisfying from beginning to the end of the period and specially had better development at the beginning in comparison with other groups. In the second group, wound healing process was slow in first week, even in comparison with third group. But it was accelerated afterwards. So, it can be concluded that AfARE has very good healing effects from beginning to the end of the treatment period. But regarding to the previous studies of author on Calendula topical ointment, the best time of its use, is in fibroplasia stage of wound healing process. Finally, healing process compared between the first and the second groups had almost the same results, qualitatively and quantitatively.