نتایج جستجو برای: 28 and 42 days of age
تعداد نتایج: 24116291 فیلتر نتایج به سال:
1 Penn Centre for Brain Injury and Repair and Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA 2 Division of Clinical Neurosciences, University of Glasgow, Glasgow G51 4TF, UK 3 Department of Laboratory Medicine, Southern General Hospital, Glasgow G51 4TF, UK 4 Centre for Neurodegenerative Disease Research, Institute on Ageing and ...
Two hundred and fifty day-old broiler chickens were housed in a high altitude farm and divided in two experimental groups (cold-exposed and control). At the age of 3 and 4 d, the cold-exposed chickens were exposed to 15?C for 3 h, while the control birds were reared under normal condition. During the period between 14 and 28 days, both groups of chickens were exposed to a low environmental temp...
the objective of this experiment was to determine the effect of long-term low-dose administration of lead (pb) on thyroid function in sheep. in this experiment 10 healthy iranian male sheep, aged about oneyear- old were randomly allocated into two equal groups of control (n = 5) and experiment (n = 5). both groups were kept under the same conditions of food and environment. the treatment group ...
BACKGROUND: Increasing of oxygen consumption in fast-growing broiler chickens is associated with the more pronounced occurrence of right ventricular hypertrophy and ascites. While, rearing of susceptible chickens in dark condition could reduce the metabolic rate of birds and hence the incidence of ascites. OBJECTIVES: The present study was designed to investigate a comparative study on the inf...
AIM To determine an efficient vaccination schedule on the basis of the humoral immune response of cell culture adapted live classical swine fever virus (CSFV) vaccinated pigs and maternally derived antibody (MDA) in piglets of vaccinated sows. MATERIALS AND METHODS A cell culture adapted live CSFV vaccine was subjected to different vaccination schedule in the present study. Serum samples were...
abstractof two mcall programs introducing 100 vocabulary items through two im the researcher of the present study was intrigued to compare the effects age modalities (pictures and streaming video) with those of a conventional method (teacher instruction) in an efl context. she set out to investigate whether such multimedia environments could provide a more effective environment for vocabulary...
this research was conducted to evaluate the effects of adding five levels of ferula assa foetida powder (0, 0.25, 0.50, 0.75 and 1 percent of diet) on performance, humoral and cellular immune status and cecal microbial population. a total of 200 one-day-old mixed sex ross 308 broiler chicks were randomly assigned to 5 experimental groups with each four replicates and 10 birds in each replicate,...
testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...
building on previous studies on intellectual features and learners’ grammar learning, the present study aimed at investigating whether intelligence criterion had any impact on efl learners’ english grammar learning across two intelligence levels. in the current study, the participants were divided into two experimental and control groups by administration of raven i.q. test. this led to the for...
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