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Назив: Effects of niacin supplementation on the insulin resistance in holstein cows during early lactation
Аутори: Hristovska T.
Cincovic M.
Belic B.
Stojanovic D.
Jezdimirović M.
Đoković, Radojica
Toholj B.
Часопис: Acta Veterinaria Brno
Датум издавања: 1-јан-2017
Сажетак: © 2017, University of Veterinary and Pharmaceutical Sciences. All rights reserved. Insulin resistance in early lactation includes low glucose concentration, low insulin release and responsiveness and high lipolysis. Niacin is important antilipolytic agent and leads to increase glucose and insulin concentration. The objectives of this study were to determine the influence of niacin on the insulin resistance in cows during early lactation using the difference of value and regression analysis between blood non-esterified fatty acid (NEFA), glucose and insulin concentrations, revised quantitative insulin sensitivity check index and glucose-to-insulin ratio. Niacin supplementation led to a decrease of NEFA concentration and an increase of glucose and insulin concentrations during the first three weeks after calving. Cows in the niacin group which were more resistant to insulin showed higher concentrations of non-esterified fatty acid in comparison with more sensitive cows from the same group, but still lower than the control. The regression analyses suggest the following characteristics of cows supplemented with niacin in comparison with the control group: the insulin response to glucose was more intense; the antilipolytic effect of insulin was lower; insulin efficiency expressed as glucose-to-insulin ratio increase with a decrease in NEFA. The metabolic changes due to niacin supplementation showed a dual influence on the insulin resistance in dairy cows during early lactation: decreased NEFA concentrations led to a decrease in the insulin resistance (due to an increase in insulin efficiency and insulin sensitivity index), but increased concentrations of insulin and glucose possibly caused an increase in the insulin resistance in dairy cows (due to lower insulin sensitivity index and possibly lower antilipolytic effects of insulin).
URI: https://scidar.kg.ac.rs/handle/123456789/8952
Тип: article
DOI: 10.2754/avb201786030231
ISSN: 00017213
SCOPUS: 85035231071
Налази се у колекцијама:Faculty of Agronomy, Čačak

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