homeira hemmati; saeed zeinoaldini; Ahmad Zare Shahneh; Amin Kazemizadeh; Alireza yousefi
Volume 21, Issue 2 , July 2019, , Pages 291-300
Abstract
Trend in body weight, thyroid hormones and some blood metabolites changes in broiler breeder hens after the peak egg production was studied. Blood samples from 20 Ross 308 broiler breeder hens, were investigated from 47 to 55 weeks of age. Plasma lipid profile including cholesterol, triglyceride, lipoprotein ...
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Trend in body weight, thyroid hormones and some blood metabolites changes in broiler breeder hens after the peak egg production was studied. Blood samples from 20 Ross 308 broiler breeder hens, were investigated from 47 to 55 weeks of age. Plasma lipid profile including cholesterol, triglyceride, lipoprotein LDL, lipoprotein HDL, and also glucose concentrations were measured every two weeks, and plasma concentrations of triiodothyronine (T3) and tetradothyronine (T4), aspartate aminotransferase (GOT) and alanine aminotransferase (GPT) were measured at the beginning and at the end of the experimental period. Results showed that body weight and plasma concentration of glucose, triglycerides, cholesterol, and LDL were increased, and concentrations of HDL were decreased (P<0.05) over the experimental period. Plasma T4 concentrations were decreased with age of the birds (P<0.05), while T3 concentrations were not affected. Plasma GOT and GPT enzymes activities were increased over the experiment period (P<0.05). In general, by increasing of age and subsequently body weight of breeder hens, several major changes have been occurred in blood metabolites and metabolic hormones which could reduce production and reproduction of broiler breeder flocks.
Amin Kazemizadeh; Ahmad Zare Shahneh; Ali Reza Yousefi; Hasan Mehrabani Yeganeh; Zarbakht Ansari Pirsaraei
Volume 20, Issue 3 , November 2018, , Pages 487-498
Abstract
The present study was conducted to investigate the effect of dietary Curcumin supplementation on histological parameters of testis in aged Ross 308 broiler breeder roosters. A total of twelve 48-week old broiler breeder roosters in a completely randomized design were randomly assigned to four treatments ...
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The present study was conducted to investigate the effect of dietary Curcumin supplementation on histological parameters of testis in aged Ross 308 broiler breeder roosters. A total of twelve 48-week old broiler breeder roosters in a completely randomized design were randomly assigned to four treatments and three replicates during a 13 weeks of experimental period. Treatments included no dietary Curcumin supplementation (control group), and daily supplementation of 10, 20, and 30 mg Curcumin/birds as mixed in the basal diet. At the end of the experimental period, all of the roosters were slaughtered, and testis tissue samples were collected. Testicular weight was higher in the roosters that daily received 30 mg Curcumin compared with the control group (P<0.05). Dietary supplementation of 20 and 30 mg Curcumin/day increased the diameter of seminiferous tubule compared to the control group (P<0.05). Seminiferous epithelium thickness was dose-dependently increased in Curcumin-supplemented birds compared to the control group (P<0.05). The number of spermatogonia cells was increased in all treatment groups compared to the control group (P<0.05). The number of Leydig cells was also increased in roosters received 20 and 20 mg Curcumin/day compared to the control birds (P<0.05). However, treatments did not affect the number of testis blood vessels (P>0.05). According to the results of the present study, dietary supplementation of 30 mg Curcumin/day/bird improves testis histological parameters in aged broiler breeder roosters.