The experiment was conducted to measure the effects of restricting dietary intake on LH release following a GnRH injection during the post-partum period in nursing cows. Eighteen multiparous Charolais cows were fed a low ration from 45 days pre-partum to 45 days post-partum, and received an intravenous injection of synthetic GnRH (55 micrograms) at 5, 15 and 30 days post-partum. Plasma LH conce...

wind is an important erosive force in deserts, where limited cover of vascular plant material offers little soil-surface protection. erosion and sediment from soil surfaces occurs when wind forces exceed soil threshold friction velocities. soils with physical or biological crusts usually resist wind erosion. this study was conducted by the aim of investigation the effect of trichoderma harzianu...

objective: this study was conducted to evaluate the effects of different proportions of marshmallow extract (althaea officinalis l.) on growth performance and carcass composition of common carp (cyprinus carpio). methods: common carp with an average weight of 37.65 ± 4.40 g were fed for two months with a diet supplemented with marshmallow (a. officinalis) extract 0.25%, 0.50 and 1%, and with no...

Background: Little is known about Giberellic acid, a plant growth regulator used in many countries, on sperm parameters; so this study was conducted to evaluate its effects on sperm parameters. Materials and Methods: A number of twenty seven adult rats were divided into three groups (n=9): control group (C), control-sham group (C-Sh) and treatment group (Tr). The C-Shgroupand the Tr group were ...

The freshwater fishes are an important source of animal protein to human population. They are adversely affected by aquatic pollutants such as pesticides used in agriculture, which are easily washed off into the water bodies. The effect may be direct when the pesticide is absorbed into the body through the skin, gill, intestine, wound, etc. It may be indirect when the pesticide alters the quali...

OBJECTIVES To evaluate the influence of secondhand cigarette smoke exposure on longitudinal growth of the tibia of growing rats and some parameters of bone quality. METHODS Forty female rats were randomly divided into four groups: control: rats were sham exposed; 30 days: rats were exposed to tobacco smoke for 30 days; 45 days: rats were exposed to tobacco smoke for 45 days; and 60 days: rats...

The improvement effects of enzymatic polypeptide Paeonia ostii seed meal (APHP) on model mice protein-energy malnutrition were evaluated by body weight changes, organ indices, levels SOD, CAT, MDA, total protein and albumin in serum, staining images major organs macrophages phagocytosis. results indicated the recovery was dose-dependent with APHP change fed high-dose (5.0 g/kg) normal diet show...

We studied morphology of gametophytes of the fern Platycerium bifurcation 20 to 45 days after spore sowing. In addition, we examined the effects of 0.01, 0.1, 1, 10 or 100 pM jasmonic acid (JA) on their growth and polypeptide composition. Gametophytes cultured for 20 days on modified Knop’s medium were oblong to round in outline. 3-5 rhizoids ap­ peared mainly on the basal cell and 2-3 unicellu...