Nowadays silver nanoparticles are being considered as an alternative to antibiotics. Silver is one of the most important elements in nanotechnology due to extensive antibacterial activity. The aim of present experiment was to evaluate the effect of silver nanoparticles coated on zeolite and organic acids on performance, intestinal morphology, gastrointestinal microbial population and carcass ch...

The purpose of this study was to determine the effects of supplementation of probiotic and peri-biotic supplements in dairy cows on quantitative and qualitative yield of milk, feed intake, digestibility of nutrients, and blood metabolites. Forty Holstein dairy cows with daily milk production of 37 ± 5 kg and initial weight of 700 ± 40 kg were divided into four groups in a completely randomized ...

In present study the effect of dietary inclusion of equal amounts of four traditional medicines; Matricaria chamomilla L, Zataria multiflora L, Mentha piperita L and Terminalia chebulo L on growth performance and digestive enzymes activity in Litopenaeus vannamei was investigated. Two diets, including a control basal diet and an experimental diet with 30 g kg-1 herbal mixture supplementation we...

Danio rerio is one of the most beautiful ornamental fish living in fresh water and tropical water having a lot of fans in our country. This study aimed at investigating the effect of flaked diet with spirulina microalga feeding on growth and survival rates of Danio rerio in Mahshahr, south of Iran in 2014.  Three hundred and sixty zebra fish have been purchased and were randomly distributed amo...

Gonadotropin-releasing hormone (GnRH) is a key regulatory molecule of the hypothalamus–pituitary gonadal axis which induces transcription of luteinizing hormone (LH) from the anterior pituitary. Research has shown that estrogen plays an important role in regulating GnRH. Also, recent experiments indicated that Vitex agnus-castus (VAC) has high levels of phytoestrogen. Hence, this research was p...