جستجوی مقالات مرتبط با کلیدواژه « In ovo injection » در نشریات گروه « دامپزشکی »

The objective of the present study was to investigate the effects of in ovo injection of nanocurcumin on intestinal histomorphology and some serum components of the hatched chicks. The chicken eggs were injected with 1, 10, 100, 1000, and 10000 ppm of nanocurcumin, and the other two groups were used as control and injected control (saline). At the end of the experiment, blood and tissue samples were collected for biochemical and histological examination. For histological examination, small intestine was sampled and routine histological methods containing fixation, dehydration, clearing and paraffin embedding were used. Sections were stained with hematoxylin & eosin for light microscopy evaluation. Blood biochemical parameters were analyzed by an automatic analyzer. Results indicated that in ovo injection of saline significantly reduced albumin, globulin, total protein and AST (aspartat aminotransferase) compared to the control group, so that injection of nanocurcumin corrected the reduction of these factors. Uric acid was increased by injection of 1, 10 and 100 ppm nanocurcumin compared to the other groups. Blood glucose levels decreased slightly with increasing the dose of nanocurcumin, and in the 1000 ppm nanocurcumin group, the levels were significantly lower than those of the control. In ovo injection of 1000 ppm nanocurcumin significantly increased the villi height and villus height/crypt depth ratio compared to the saline and 1 ppm nanocurcumin groups. Although the primary purpose of this study was to evaluate the effects of in ovo administration of nanocurcumin, it was demonstrated that the use of saline in the in ovo injection was inappropriate. In conclusion, in ovo injection of nanocurcumin corrected saline-altered serum factors, lowered blood sugar, and increased the intestinal absorption surface.

In ovo injection of nutrients as an early feeding method in birds directly supplies the nu- trients to the developing embryo.

This study was designed to evaluate the effects of in ovo injection of nicotonic acid, panto- thenic acid and folic acid on the performance and immune system of broilers.

450 Ross 308 fertile eggs were divided into 5 groups and placed in a hatchery machine. Five experimental groups included in ovo injection of 0.121 mg of nicotonic acid, 0.052 mg of pantothenic acid, 0.007 mg of folic acid on the 14th day of incubation period, positive control or injection control (physiological serum injection) and negative control (non injecting control).

At the age of 18 days of the rearing period, injection of pantothenic acid and nicotinic acid in- creased the antibody titre against Newcastle Virus and folic acid and pantothenic acid reduced the SRBC titer. At 35 days of age, nicotinic acid and folic acid had lower SRBC titer than the negative control group. The highest lymphocyte to heterophilia ratio was observed in the pantothenic acid group and the lowest levels were seen in the folic acid group. In ovo injection of nicotinic acid and pantothenic acid caused weight loss in chicks during the first and second weeks of rearing period compared to positive and negative controls groups.

The results of this study indicated a positive effect of in ovo injection of pantothenic acid and nichotinic acid on some immune parameters of broiler chicks. In despite of the negative effect of in ovo injection of nicotinic acid and pantothenic acid on growth rate of chicks during the first and second week of age, there was a compensatory growth for the nicotinic acid group such that this treatment positively influenced the final weight of the broilers.