نتایج جستجو برای: 49 samples of poultry diets
تعداد نتایج: 21186103 فیلتر نتایج به سال:
Twenty-one samples of water were collected from commercial egg production farms in Georgia with or without a history of fatty liver syndrome. These samples plus a sample of water from the University of Georgia Poultry Farm were analyzed for various mineral elements by atomic absorption, direct reading emission spectroscopy and by neutron activation. Water samples from farms with a history of fa...
From the last few years, the inclusion of microbial phytase in poultry diets has increased significantly, mainly in response to heightened concerns over phosphorus pollution of the environment as cheaper means to make phosphorus available to birds from phytate. Phytate is the major form of phosphorus, abundantly found in cereal grains, beans and oilseed meals used in poultry diet but the monoga...
previous results indicated that performance of chicks fed a high level (10%) of poultry by-product meal(pbm) was lower than performance of chicks fed a corn-soybean meal (sbm) diet. the latter difference was hypothesized to be due to variation in digestible amino acid (aa) levels among the diets. this study evaluated diets containing pbm formulated on equivalent total aa basis vs. an equivalent...
Both intrinsic and exogenous phytase in poultry feeds can alter phytate utilization and the solubility of P excreted. This experiment determined the effects of feeding diets varying in cereal grain, P concentration and phytase addition on phytate and P utilization and P characterization of ileal digesta and excreta. Twelve treatments, consisting of diets based on corn, wheat, barley, or high fa...
background: mycotoxins are a group of structurally diverse substances produced by a wide range of moulds. these fungal secondary metabolites, whose presence in feed is unavoidable, can impose hazards to human and animal health. continuous concern about potential effects of mycotoxins in the human diet has led to an increasing interest in researches about fungi and mycotoxin production. the aim ...
PURPOSE A virologic surveillance program for A(H7N9) virus was conducted from April 15, 2013 to February 14, 2014 in Guangzhou, aiming to clarify the geographical distribution of A(H7N9) viruses among live poultry markets (LPMs) and poultry farms in Guangzhou. Virological and serological surveys of poultry workers were also conducted to evaluate the risk of poultry-to-human transmission of the ...
It is well known that dietary protein affects the growth performance and carcass composition of poultry. Over the last several decades, numerous studies have been carried out to investigate to optimize the level of dietary protein since the protein is an important and expensive constituent in poultry feed. It is generally accepted that dietary protein should represent a balance of amino acids s...
the rise and stublishment of safavid dynasty was depend on triangle of tasavof, tashayo and royalty, kings legitimized their power upon these. therefore for the understanding the functions of that period we must explore the role of this elements. although application and emphsise upon dignities such as; complete mentor (morshede kamel), deputy of absent imam (nayebe imame ghayeb), and god’s sha...
s of papers 5 indicator viruses such as male specific coliphages can have signficant advantages since they can serve as conservative pathogen indicators. Also, the ability to detect pathogens originating from poultry wastes can be extremely important when assessing risks from poultry wastes. Eighteen poultry pine litter samples and conventional paper chick box trayliners obtained from a local g...
The use of probiotics in poultry production has increased rapidly, and this movement been promoted by global events, such as the prohibition or decline antibiotic growth promotants feeds. There a persistent search for alternative feed additives, have shown that they can restore composition gut microbiota, produce health benefits to host, including improvements performance. Probiotics potential ...
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