کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2453880 1110356 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
INVITEd REVIEW: Mineral and vitamin nutrition in ruminants 1
ترجمه فارسی عنوان
بررسی مجدد: تغذیه مواد معدنی و ویتامین در یادآوران 1
کلمات کلیدی
گاو گوشت گاو، احشام لبنیاتی، مواد معدنی، ردیابی مواد معدنی، ویتامین
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
Requirements and factors that affect dietary requirements for several trace minerals and vitamins in ruminants are poorly defined. Most B vitamins and vitamin K are believed to be synthesized by bacteria in the rumen in adequate amounts to meet the requirement of the animal. Nonetheless, several studies indicate that supplementing high-producing dairy cows with approximately 20 mg/d of biotin can decrease hoof lesions and lameness and in many instances increase milk yield. In vivo synthesis of choline is also likely limiting milk production in early lactation. The vitamin E requirement for optimal immunity and health in receiving cattle and transition dairy cows continues to be an area of interest, with responses to supplementation varying. Requirements for vitamin D are being reevaluated in light of its potential effects on immunity. Studies clearly indicate that P requirements of cattle are less than those recommended 20 yr ago. Because of increased use of ethanol by-product feeds that are high in S, considerable research has been conducted to determine the effects of high dietary S (in feedstuffs and water) on performance and incidence of polioencephalomalacia. Requirements for certain microminerals are affected by antagonists. Sulfur and Mo are important Cu antagonists that can greatly affect dietary Cu bioavailability. High dietary Fe, when present in a bioavailable form, is a potent Cu and Mn antagonist. Recent research suggests that NRC recommendations for Co and Mn might underestimate requirements. An estimated requirement for Cr should be considered in the future based on responses to Cr supplementation in cattle.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Professional Animal Scientist - Volume 30, Issue 2, April 2014, Pages 180-191
نویسندگان
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