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Articles by H. Lotfollahian
Total Records ( 3 ) for H. Lotfollahian
  Sh. Golzar Adabi , A. Haji Babaei , h. Moghaddam , A. Taghizadeh , T. Farahvash , H. Lotfollahian and F. Moslemi Pour
  To investigative the effect of dietary L-carnitine on ostrich sperm quality, a research was conducted in a completely randomized design consisting of 3 treatments and 4 replicates. The total numbers of birds used in this trail was 12 African black neck male ostrich. The experimental rations were prepared using the different levels (0, 250 and 500 ppm). The metabolizable energy, protein and the nutrient of these rations were similar. In order to study semen volume, sperm motility, live sperm percent, sperm count and abnormal sperm percent, after one month adaptation, semen collected at the beginning of every three month. The results of statistical analysis of data obtained indicated that there were significant effect of L-carnitine on semen volume (p<0.01), sperm motility, live sperm percent, sperm count (p<0.05) but L-carnitine had no significant effect on abnormal sperm percent.
  J. Mirabdollbaghi , S.A. Hosseini , H. Lotfollahian , Mahdavi Ali and Kalanie Mehdi
  An experiment was conducted to study the effects of different water source, saline water (Tap water +2 g L-1 Na) and tape water with a diet that supplemented by three level of Ascorbic Acid (0, 1.5 and 3 g kg-1 of diet) on laying hen’s performance and egg shell quality. This trail was carried out on 108 commercial laying hens (Hy-Line) 32 weeks old for 12 weeks. All of the data were subjected to Two- way analysis of variance test. The result showed that egg production (%), egg weight (g), egg mass (g/h/day), feed conversion ratio, feed consumptions didn’t effected by saline water but using saline water increased the percentage of eggs with damaged shells (p<0.01). Also the effect of different level of Ascorbic acid on egg production (%), egg weight (g), egg mass (g/h/day), feed conversion ratio were not significant, but feed consumption reduced by using ascorbic acid (p<0.05). Egg shell thickness (mm), egg shell weight (%), egg shell weight (mg/cm2), egg specific gravity, egg shell calcium (%) and egg shell phosphorous (%) didn’t affected by saline water and different level of Ascorbic acid.
  S.A. Hosseini , H. Lotfollahian , A. Kamyab and A. Mahdavi
  A trail was conducted to investigate the effect of yeast (Saccharomyces cerevisiae SC47) utilization on the commercial layer hen’s performance. The experiment consisted of 5 diets (0, 0.25, 0.5, 0.75 and 1 g Yeast per kg diet) with five replicates each containing 15 laying hen’s hy-Line W36 from 25 to 78 week of age. The randomized complete design was used for this experiment. During the experiment egg weight, egg production (%), Egg Mass, feed conversion and egg quality were measured daily and every month, respectively. The data analyzed in five periods (25-32, 33-44, 45-58, 59-78 and 25-78 week). The result showed that using Yeast had no positive effect on feed intake in all of the periods (p<0.05). Duncan test showed that feed intake in 59-78 weeks for group of 3 (0.5 g kg-1 Yeast) was higher (102.06 g) than other groups. Egg production and average egg weight didn’t affected by using Yeast, but in 25-78 weeks, egg production in 4 and 5 treatments was 2.43 and 2.06% higher then control groups, respectively. In all of the periods egg mass in groups of 4 and 5 was higher than control but only in 59-78 weeks this difference was significant. In this period egg mass in 4 and 5 treatments was 6.98 and 8.42% higher than control. Yeast had no positive effect on feed conversion, but the group of 5 (1 g kg-1 Yeast) had a best feed conversion. Addition of Yeast in Commercial Layer hen diet was no effective on egg specific gravity, eggshell thickness, haugh unit, egg breaking strength and eggshell quality (p<0.05). Egg special gravity in group 2 was higher than group 3 (p<0.05). Haugh unit in group 5 was higher than other groups in all of the periods but this difference in 25-32 and 59-78 weeks was significant (p<0.05). The food intake cost in 25-78 weeks was 21, 11.9 and 17.65 Rials less for each kg egg in groups 3, 4 and 5, respectively.
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