نتایج جستجو برای: old birds results three days post vaccination
تعداد نتایج: 4945156 فیلتر نتایج به سال:
this study was carried out to evaluate the impacts of organic (sel-plex® selenium yeast) and inorganic (sodium selenite) selenium and vitamin e (d1-α-tocopheryl acetate) on performance and carcass characteristics in broiler chickens. the effect of two types of house temperature and six treatments of feed additives were investigated in a 2×6 factorial experiment at 56 days period with 960 commer...
Objective: In this research, the effect of intranasal and subcutaneous BCG vaccination was compared on nitric oxide production by peritoneal macrophages and the load of parasite burden in liver and spleen of infected BALB/c mice. Materials & Methods: Twenty male 6-8 weeks old BALB/c mice were vaccinated with appropriate dose of BCG through intranasal and subcutaneous routs. They received au...
As infants lose maternally derived antibody, they experience a period when antibody levels are insufficient to protect against measles yet may interfere with immunization. In Kangaba Mali, sera were collected from 89 2-8-month-old infants and 32 9-10-month-old infants without a history of measles or vaccination; post-vaccination sera were collected from 24 of the 9-10-month-old infants 3-5 week...
background & aim: the fruit of citrullus colocynthis has a bitter taste and antibacterial properties against pathogen factors.the aim of current research was to study the effects of different dietary level of bitter cucumber fruit powderwith and without protexin probiotic supplementation on growth performance, carcass traits and intestinal morphology of broiler chicks. experimental: two hundred...
This study conducted to evaluate the effect of prebiotics (Fermacto) and isoleucine and their combination on performance and some blood parameters of broiler chickens during finisher period. At the first of experiment 300 one-day-old mixed Ross broiler chicks reared in same condition according to Ross manual guide up to 21 days old. Chicks at 21 day old were randomly allocated to 20 groups of 1...
the present study was done to study the effects of water hypericum perforatum extract (whpe) on performance, abdominal fat, carcass characteristics, and blood biochemical parameters of broilers with 160 day-old ross 308. broilers were randomly distributed among the16 experimental units of four treatments with four replications (10 birds in each replicate) for 42 days. the treatments were includ...
A phase II clinical study was conducted in African toddlers (aged 12 to 23 months), with subjects receiving either investigational meningococcal group A conjugate (PsA-TT), meningococcal ACWY polysaccharide (PsACWY), or Haemophilus influenzae type b (Hib-TT) vaccine. Ten months following vaccination, the 3 study groups were further randomized to receive a dose of PsA-TT, a 1/5 dose of PsACWY, o...
A probiotic containing Bacillus mesentericus, Clostridium butyricum, and Streptococcus faecalis [AVITEAM] was evaluated in damage control and synergism with vaccination against coccidial infection in broilers, using morphometric measurements and histopathological observations. It was mixed in feeds and vaccination was done by inoculating birds with an attenuated live vaccine containing Eimeria ...
It is important to rapidly differentiate infectious bronchitis virus (IBV) from disease agents like highly pathogenic avian influenza virus and exotic Newcastle disease virus, which can be extremely similar in the early stages of their pathogenesis. In this study, we report the development and testing of a real-time RT-PCR assay using a Taqman-labeled probe for early and rapid detection of IBV....
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...
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