وحید زاهدی

In order to study the effect of animal manure، biofertilizer and different level of phosphorus manure on yield and grain yield components of barley under dryland condition an experiment was conducted in field of Saleh-Abad region of Ilam Province in 2013-2014. The experiment design were carried out in split split plot based on a randomized complete block design (RCBD) with three replications، that animal manure include: use and non-use in main plots، Phosphorus chemical fertilizer at four levels including: non-use، use based on 33، 66 and 100 % of the plant need in sub-plots and Barvar-2 biofertilizer at two levels including: application and non- application were in sub sub-plots. In this study، grain yield، number of spike per m2، number of grain per spike and 1000-grain weight were tested and measured. Results of analysis of variance showed that all of traits affected by experimental factors. The results of the experiment، use a single bio-fertilizer Barvar-2 and animal manure had higher grain yield than non-use treatment of them. Experiment results also showed that the highest yield of barley with 3179/4 kg/ha related to treated of simultaneous use of biofertilizer، animal manure and phosphorus fertilizer 66 % of the plant need، and the lowest grain yield belonged to non-use biofertilizer، animal manure and chemical phosphorus fertilizer (control treatment) combination treatment.

This study was carried out to investigate the effect of fennel seeds on laying performance and some physical and quality properties of eggs in Japanese quails. One hundred and twelve 42-day old Japanese quails (Coturnix Coturnix japonica) were randomly assigned into 4 treatments with 4 replicates and 7 birds per each replication. A corn-soybean basal diet was supplemented with four levels of fennel seeds (0, 0.4, 0.8 and 1.2 %) to reach the dietary treatments. Eggs were collected daily, and the eggs laid during the last 2 d of every week were weighed. The eggs laid during the last 3 d of week 9 were collected and were used for physical and quality properties assays. Egg weight, egg production percentage, egg mass and feed conversion ratio were significantly affected by the levels of fennel seed (P<0.05). The egg weight, egg production percentage, egg mass and feed conversion ratio in the birds fed diet with the highest level of fennel seeds (1.2 %) were more than those of the control group. Also length, width, surface, volume, geometric mean diameter, Haugh unit (HU) and eggshell thickness significantly increased by increasing the dietary levels of the fennel seeds (P<0.05). The results of this experiment showed that using 1.2 percent of dietary fennel can positively affect laying performance and egg quality in Japanese quails.

The aim of this study was to evaluate the effect of estradiol (E2)، oxytocin (OT)، relaxin (relaximol) injection and prostaglandin E1 (misoprostol) suppository on the cervix dilation، time of cervical dilation persistency and pregnancy rate of Zandi ewes using artificial insemination. Eighty 3-4 years old and 55±2. 5 kg weight ewes were used for this study. In experiment 1، the ewes were assigned to four equally groups. The groups were received 100 µl E2، 100 IU of OT، 5 ml relaximol and 200 µg misoprostol، respectively. Then، cervical dilation and time of cervical dilation persistency were examined at four times. E2 had no effect on cervical dilation and time of cervical dilation persistency (P>0. 05). Using of OT، relaximol and misoprostol lead to cervical dilation (P<0. 05). In experiment 2، the estrous synchronization was accomplished using CIDR insertion for 12 days. At the time of CIDR removal، 500 IU of eCG injected in to the ewes and then assigned to four equally groups. The control group received no cervical dilator treatment. Other three groups received the same treatment as the first experiment. According to the best time of cervical dilation in experiment 1، ewes were inseminated transcervically in the times of 20 and 40 min and 5 hours after treating، respectively، at 54 hours after eCG injection. Fifty days after insemination، pregnancy rate were recognized via ultrasonography diagnosis. Pregnancy rate in OT group was higher (P<0. 05) than misoprostol and relaximol groups (60% vs 25 and 10%، respectively). However، there were no significant differences (P>0. 05) between oxytocin and control group (60% vs 50%) in pregnancy rate. In conclusion، injection of oxytocin dilate the cervical canal and improved pregnancy rate in Zandi ewes، therefore this could be used as an instrument for improving pregnancy rate during artificial insemination.