نتایج جستجو برای: growth and survival
تعداد نتایج: 16967108 فیلتر نتایج به سال:
Populus euphratica tree is a species naturally growing in riparian zones of rivers in arid and semiarid region where seasonal flooding and soil waterloging provides the conditions for this species. The aim of current study was to assess survival, growth characteristics and biomass allocation of Populus euphratica seedlings exposed to combined flooding- salinity stress at four levels including c...
Water shortage is one of the most important environmental stresses in Mediterranean regions. Poor seedling quality may account for the failure of oak regeneration. To determine the best seed origin of Quercus brantii, we investigated on seedlings collected from 20 mother trees in the Zagros Mountain forests 700 to 2200 m altitudes above sea level. Seedlings from different altitudes were irrig...
objective: cryopreservation of ovarian tissue or follicles has been proposed as an alternative method for fertility preservation. although successful vitrification of follicles has been reported in several mammalian species, the survival rate is generally low. the aim of this study was to investigate the effects of fibroblast growth factor (fgf) and epidermal growth factor (egf) on in vitro pre...
the purpose of this study was to elucidate some factors affecting the growth of salmonella typhimurium. these factors included carum copticum essential oil (0%, 0.015%, 0.03% and 0.06%), temperature (25 ˚c and 35 ˚c), ph (5, 6 and 7) and inoculum size (103 and 105 cfu ml-1). brain heart infusion broth was used as the growth medium. there were 48 treatment combinations and the experiment was ca...
Immunostimulants are one of the important ways to prevent diseases. The vaccination and immune system stimulator and their combination can increase the ability of vaccines in prevention of diseases and improved indexes of growth and survival rates in shrimps. In this research, the separate and simultaneous effects of Ergosan and Vibromax vaccine on the growth factors such as total length and in...
Immunostimulants are one of the important ways to prevent diseases. The vaccination and immune system stimulator and their combination can increase the ability of vaccines in prevention of diseases and improved indexes of growth and survival rates in shrimps. In this research, the separate and simultaneous effects of Ergosan and Vibromax vaccine on the growth factors such as total length and in...
Shape and size of the body, color's beauty and its healthy condition are among the main factors for selling of ornamental fish in the market. Researchers have tended to use herbal additives as growth promoter and immune stimulator agents. The aim of this study is to evaluate the effects of turmeric powder (Curcuma longa) as a dietary supplement for the ornamental fish Green Terror (Andinocara r...
The aim of this study was to investigate the effect of different dietary protein levels on growth, survival and body composition of Hediste diversicolor. Three isocaloric diets with three different protein levels containing high protein (50%), medium protein (35%) and low protein (20%) were designed in three replicates in completely randomized design. Hediste worm larvae weighing 0.02±0.005g we...
background it is estimated that survival of children with perinatally transmitted acquired immunodeficiency syndrome (aids) in brazil is around 60 months, and an upward trend has been shown over recent years. the reduction in mortality rates in brazilian children is mainly attributed to the effectiveness of antiretroviral therapy. objectives the aim of this study was to characterize the epidemi...
The Acehnese mahseer, locally known as keureling, Tor tambra is one of the highest economically valued freshwater fishes found in Aceh waters. The culture of T. tambra was initiated in Aceh Province, Indonesia more than five years ago. However, the growth rate in captivity has been low, probably due to feeding problems. Hence, the objective of the present study was to evaluate the optimum level...
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