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Poultry require the presence of at least 36 nutrients in their diet in appropriate concentrations and balance. Hypervitaminosis A Baker et al. (20) reported that the administration of 200 mg retinyl acetate per kg of body weight per day to growing chickens adversely affects skeletal development. Chicks have lighter and shortened tibiae exhibiting widened epiphyseal growth plates with irregular tunneling by blood vessels. Widening results from Increased numbers of hyper plastic chondrocytes. Bones exhibit reduced osteoblastic activity and increased bone and blood alkaline phosphatase activity. Ventricular dilation and brain swelling are also observed. Vitamin D Deficiency Clinical Signs and Signalment. In confined laying hens, signs of deficiency begin to occur as soon as 2 weeks after they are deprived of vitamin D. The first sign is a marked increase in the number of thin-shelled and soft-shelled eggs, followed soon after by marked decrease in egg production. Biochemical indicators include a rapid decrease in the concentrations of 25-hydroxycholecalciferol and 1, 25-dihydroxycholecalciferol in the blood, followed soon thereafter by a decrease in blood calcium concentration (176, 197, 199). Egg production and eggshell strength may vary in a cyclic manner. Several cycles of decreased egg production and shell strength may each be followed by periods of relatively normal production and shell strength. OMICS Group Group is an open access journal publisher started with an aim of making the information of Science and technology ‘Open Access’. OMICS Group Journals encourages original and well researched articles for publication. OMICS Group Group has been instrumental in taking the knowledge of Science & technology to the doorsteps of ordinary people, Research Scholars, Students, Libraries, Educational Institutions, Research centers. OMICS Group Committed to make genuine and reliable responsible contributions to the Scientific body. OMICS Group host over 400 leading edge peer Open Access journals and has organized over 300 scientific conferences all over the globe. OMICS Publishing Group journals have over 3 million readers and the fame and Editorial board which contain over 30,000 eminent personalities and the rapid, quality and quick review processing. OMICS Group Conferences make the perfect platform for a most exciting and memorable scientific event filled much enlighting interactive sessions, world class exhibitions and poster presentations.
Poultry Conferences in 2015: 1. Northern poultry congress 2015 2. International processing & production expo (IPPE) 2015 3. 3r International poultry meat congress 4. VIV Turkey 2015 5. 20th European Symposium on Poultry Nutrition Lists of Societies related to Poultry: 1. APPPA - American Pastured Poultry Producers Association 2. U.S. Poultry & Egg Association 3. IRISH SOCIETY of POULTRY 4. Poultry Club of Great Britain 5. Poultry Federation of India 6. IPEMA: Indian Poultry Equipment Manufacturer Association Poultry related Companies: 1. SKM Animal feeds and food India 2. Anmol Group India 3. Amrit Group of Companies India 4. Canadian Feed Additives Inc. (Canavit) Canada 5. Omnipro Pet Care Llc USA
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