Browsing by Author "Mohiuddin, MD."

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    A STUDY ON PREVALENCE OF SUB CLINICAL MASTITIS IN DAIRY COWS IN SOME SELECTED DAIRY FARMS UNDER CHITTAGONG DISTRICT
    (Chattogram Veterinary and Animal Sciences University Khulshi, Chattogram-4225, Bangladesh, 2009-04) Mohiuddin, MD.
    This study investigated the current status of sub clinical mastitis in 12 dairy farms in 306 dairy bovine udders at Chittagong metropolitan area over a one-month period. The prevalence of sub clinical mastitis was assessed by the results of physical examinations of the mammary gland and by California Mastitis Test (CMT) from a total of 1224 quarters. The samples were randomly collected from udders apparently normal and those affected by sub clinical mastitis. The cow-based prevalence of sub clinical mastitis defined by a cow having at least one CMT positive quarter was 70% of them affected with sub-clinical mastitis .The prevalence of sub clinical mastitis was higher in sahiwal x Friesian cows (90%) than other breeds and the lowest prevalence of sub clinical mastitis found in ( local x Friesian ) x Friesian cows. The prevalence of sub clinical mastitis was higher in large dairy farm (73%) than small (68%) and medium farm (72%) size. The dairy cows of 5-6 years aged were most susceptible to sub clinical mastitis than other age and old aged cows were less susceptible to sub clinical mastitis. Frequency of mastitis was found to be increased steadily with advancing age.The prevalence of sub clinical mastitis was higher in early lactation (83%) and in mid lactation (80%) than late lactation (74%). Prevalence of sub clinical mastitis among cows of first parity (78%) were higher than others (1-6, 7 & above 7 parity).The frequency of mastitis in front quarter was higher than hind quarter (1.045 times) and the rate of quarter infection was 45%. Prevalence sub clinical of mastitis in pregnant animals (88.61%) were higher as compared with fresh (61.45%). Higher prevalence of sub clinical mastitis (90%) was found in cows producing 5 to 10 liters milk in the morning. Higher prevalence of sub clinical mastitis was found in dirty barn (38%) and dirty teat and udder (40.42%) 0f cows.
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    PRODUCTION OF ORGANIC SELENIUM AND METHIONINE FOR LIVESTOCK’S AND POULTRY
    (Chattogram Veterinary and Animal Sciences University Khulshi, Chattogram-4225, Bangladesh, 2009-04) Mohiuddin, MD.
    Selenium Yeast, Produced by growing select strains of Saccharomyces cerevisiac in Selenium-rich media, is a recognized source of organic. food-form Se, but the determination of its exact composition with respect to the Se species present produced confilicting results. Improved methods of analysis have since reveled it to contain 90+ % of its Se in the form of selenomethionine, the principal organic nutritional form of Se for higher animals and humans. Yeast (Saccharomyces cerevisiae ) also excellent sources of methionine . so yeast media also widely used as a protein source. This study is conducted to know the amont of organic selenium and methionine produced by the yeast ( Saccharomyces cerevisiae ).Amount of those organic selenium and methionine from yeast media estimated by chemical test.It was found that yeast media contain 3.5% methionine and 2 mg per gm of inorganic selenium. The safety record of Se yeast is excellent: During the three decades of its world-wide use as a souree of supplemental Se, no cases of Se poisoning have occurred due to dosage or formulation errors.