saeid zerehdaran

The experiment was conducted to evaluate the effect of different levels of germinated barley on performance and egg quality in laying hen. One hundred and twenty laying hens, 44-weeks old, Lohmann LSL hens were used in this experiment. Birds were assigned randomly to the groups, each of which consisted of 20 birds (4 replicate cages each containing 5 birds). The experiment was conducted as a randomized complete block design. Six experimental diets were used, diets that contained: corn-soybean meal, barley, barley plus enzyme supplementation (safizym: β-glucanases, Xylanases and Celluloses) and germinated barley replaced barley at 33, 66 and 100 percent. Experimental period was 10 weeks. The performance of laying hens measured weekly, but biweekly for egg quality. The results of experiments indicated, by increasing of germinated barley in diets of laying hens feed convention ratio egg production and egg mass production significantly improved as compared to barley treatment (P

The objective of this study was to investigate the effect of different levels of egg yolk on quality of Zel ram spermatozoa in pre and post freezing conditions. Semen samples were collected from 4 healthy and mature rams using an electro-ejaculator and suitable samples were mixed with Tris extender in a ratio of 1:4 semen and samples were assessed, after cooled to 5-0C. Then, 0.5 ml of straws were filled with diluted semen. At first, straws were frozen on liquid nitrogen vapor, then kept in liquid nitrogen and after 10 days straws were thawed to investigation of morphological characteristics, viability, motility and progressive motility of spermatozoa. This experiment was carried out on the basis of completely randomized design with 3 treatments include levels of egg yolk 10, 15 and 20% and 9 replications. Results showed that the effect of egg yolk on viability, motility, progressive motility, normal spermatozoa and recovery percentage of spermatozoa were not significant (P>0.05), but the higher quality of spermatozoa and supply of energy source given in 20% egg yolk for lifespan, despite the absence of significant, if price of egg yolk is economical, 20% egg yolk can be used in Tris extender for maintaining and long term storage of Zel ram spermatozoa.

Eighteen female, neonatal Brown Swiss calves (39.5±1.2Kg) were randomly divided into three treatment groups to investigate the effect of physical processing of diet on weaning age and some blood metabolites. Treatments were included: mash starter (M), pelleted starter (P) and heterogen of mixture moisturized, rolled barley and corn. (H). Diets were formulated to be isonitrogenous. There were no significant differences in weight gain, total intake of starter and feed efficiency. Weaning age and total intake of milk dry matter were higher in calves received treatment (M) than other treatments. Crud protein and organic matter digestibility were lower in treatment (M) than others, but there was no significant difference between treatment (P) and (H). Treatments had no effect on blood glucose content, but BUN concentrations was higher in treatment (M) than other treatments. Result of this experiment showed that feed pelleting and grain processing can reduce weaning age and milk intake in calves but, had no effect on feed intake and gain weight until end of weaning age.