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Articles by Y.J. Ahangari
Total Records ( 3 ) for Y.J. Ahangari
  B. Parizadian , Y.J. Ahangari , M. Shams Shargh and A. Sardarzadeh
  The objective of present study was to investigate the effects of various levels of L-carnitine on performance, egg quality and blood parameters of laying Japanese quail. This experiment was carried out using 128 quail in a completely randomized design with four levels of L-carnitine (0, 125, 250 and 500 mg/kg). Four replicates with 8 quails were allocated to each experimental treatment and birds were reared from 35-70 days. The results showed that there were no significant differences in feed intake and egg production among experimental treatments (p>0.05). The effect of L-carnitine on feed conversion ratio was significant (p<0.05). The quails were fed with rations containing L-carnitine had lower feed conversion ratio (p<0.05). Adding of L-carnitine supplementation (125 and 250 mg/kg) significantly reduced egg yolk cholesterol and triglyceride (p<0.05). Dietary L-carnitine supplementation had no significant effect on other egg quality parameters (p>0.05). The quails were fed with ration containing L-carnitine supplementation (125 mg/kg) had lower blood triglyceride (p<0.05). Furthermore, L-carnitine at levels of 125 and 500 mg/kg significantly reduced blood cholesterol in comparison with control group (p<0.05). Based on current results, it can be concluded that supplementing diet with L-carnitine will reduce blood triglyceride, cholesterol and improve egg quality in laying Japanese quail.
  A. Toghdory , T. Ghoorchi , A. Naserian , Y.J. Ahangari and S. Hassani
  Eight multiparous Holstein cows with an average milk production of 34.6±2.8 kg day-1 and body weight of 676±79 kg were used to evaluate the effect of rumen protected and unprotected choline on energy-related biochemical metabolites of lactating dairy cows. The experimental design was a balanced change over design with 4 treatments and 4 periods of 21 days. Experimental treatments were: No Choline (NC), Unprotected Choline (UC) fed at 50 g day-1, Rumen Protected Choline (RPC 25) fed at 25 g day-1 and Rumen Protected Choline (RPC 50) fed at 50 g day-1. Rumen protected choline was blended with 0.25 kg of ground corn and fed once per day as a top dress. Blood samples from coccygeal vessels were collected on last day of each period and analyzed for glucose, triglyceride, cholesterol, blood urea nitrogen, very low density lipoprotein, low density lipoprotein and high density lipoprotein. The result shows that blood metabolites such as glucose, triglyceride, cholesterol, blood urea nitrogen, very low density lipoprotein and low density lipoprotein not affected by treatments (p>0.05). Blood glucose concentration tendency increased by rumen protected and unprotected choline, but wasn’t statistically significant. Unprotected choline decreased concentration of high density lipoprotein than control group (p<0.05). Rumen protected choline had no significant effect on high density lipoprotein levels. High density lipoprotein decreased by using unprotected choline, but other blood metabolites not changed by treatments.
  B. Parizadian , Y.J. Ahangari and M. Zamani
  The objective of present study was to investigate the effects of various levels of dietary L carnitine supplementation (0, 125, 250 and 500 mg kg‾1) on rooster semen characteristics during liquid storage. Semen were collected from 16 rooster using abdominal massage and suitable samples were mixed together and sperm characteristics including percentage of motile, viable, abnormal, semen pH, volume and concentration were assessed. This experiment was carried out on the basis of completely randomized design. Results showed that during liquid storage, the effect of L carnitine on motility and viability percentage of sperm in beltsville extender were significant (p<0.05). Mean comparison on the basis of duncan test showed that the highest motility and viability of spermatozoa were obtained from roosters that were fed with rations included 250 mg kg‾1 L-carnitine supplementation. Semen characteristics such as volume, pH and abnormal percentage of sperm did not differ significantly (p>0.05). Furthermore, semen concentration of birds fed dietary carnitine significantly differ from controls during experiment (p<0.05). The highest concentration of semen were obtained in level 250 mg kg‾1 L-carnitine. Therefore, use of L-carnitine supplementation (250 mg kg‾1) in broiler breeder male feeding is recommended to improve quality of rooster semen.
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