فهرست مطالب amirhossein khaltabadi

A total number of 176 one-day-old male broiler chicks (Ross 308) were used for 49-d period to investigate the effect of different form of Manganese Supplementation in the corn-soybean meal based diet on performance, carcass traits, hematology, blood biochemistry and intestine histology of Broilers Reared under Summer Temperature Conditions. This experiment was conducted in a completely randomized design with 4 treatment and 4 replicates (11 birds) in each treatment. Treatments consisted of control group and three form of manganese supplementation (mineral, Organic and mix of mineral (50%) and organic (50%) form). The results showed that the addition of 100 ppm organic Mn in compared to control or mineral Mn groups increased body weight at 42d and 49-d. Feed efficiency was improved with organic Mn supplementation in compared to control group. However, all carcass traits were not affected by dietary Mn supplementation. The effect of different form of Mn supplementation on number of erythrocyte and leukocyte were not significant (P>0.05). Moreover, the shank and leg traits especially shank ash and Mn was significantly increased when organic form of Mn supplemented to control diet during summer condition. According to the results of current study, the addition of 100 ppm organic form to basal level could improve performance traits such as FCR, BW and had beneficial effect on bone traits in male Broilers Reared under Summer Temperature Conditions.

The present study was evaluated the effects of acetic acid treating and autoclaving the bitter vetch (Vicia ervilia) on nutrients degradability, protozoa counts, some ruminal parameters, and metabolisable protein. Three Farahani permanent rumen-canulated sheep were used in a 3×3 Latin square design with 21-d periods. Three experimental treatments were; 1) raw bitter vetch, 2) chemical processed bitter vetch, and 3) physical processed bitter vetch. Treating bitter vetch with 8% acid acetic and its autoclaving (121 ˚C, 117 Kpa, 20 min) were considered as chemical, and physical processing, respectively. The incubation times for in situ experiment were 2, 4, 8, 16, 24 and 48 h. Metabolisable protein was estimated based on in situ data as well. The results cleared that both processing methods (i.e. chemical and physical) reduced the degradation of dry matter and protein in the rumen which physical treating was more effective in this reduction. However the processing methods did not change metabolisable protein content of treatments. The results of protein fractionation showed that autoclaving caused to reduce the A and B1 fractions and increased the slow degradable fractions (P<0.05). Ruminal ammonia nitrogen concentration was tended to be significant (P=0.06). The protozoa count increased in rumen fluid of sheep fed autoclaved bitter vetch. The results of the current study showed that both chemical (treating with acetic acid) and physical processing (autoclaving) transferred the protein degradation from the rumen into small intestine and the effect of physical treating (autoclave) was more relevant.

To determine the protein polymorphism of ovine transferrin association with carcass economic traits in Makoei, blood samples of 576 (male and female) lambs with two types of Venoject (EDTA anticoagulant containing and non-anticoagulant containing). plasma and serum were then separated and kept in the Central Laboratory of Animal Science Depaartment in Karaj at -20°C. The research was conducted in Maysam Slaughter House located in Robat Karim. Transferrin polymorphism was determined through horizontal electrophoresis gel polyacrylamid. In total 24 genotypes with 10 respective alleles of C, B, D, A, E, G, L, K, M, Q, frequency were determined. The C allele with 0.29 frequency was the frequent allele and the M one with the 0.004 frequency was the rare allele. Association of polymorphic variations of ovine transferrin with live weight, hot carcass weight, hot carcass weight with and fat-tail weight was significant (P<0.01), but the genotypes of different proteins of transferrin with abdominal fat were not recorded as significant (P>0.05).