alexa Investigation on the Relationship of Insulin Resistance and Ketosis in Dairy Cows
ISSN: 2157-7579

Journal of Veterinary Science & Technology
Open Access

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Short Communication

Investigation on the Relationship of Insulin Resistance and Ketosis in Dairy Cows

Chuang Xu1, Shi Shu1, Cheng Xia1,2*, Bo Wang1, Hong-You Zhang1 and Bao Jun2

1Department of Clinical Veterinary Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, China

2Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agricultural University, China

*Corresponding Author:
Cheng Xia
Department of Clinical Veterinary Medicine
College of Animal Science and Veterinary Medicine
Heilongjiang Bayi Agricultural University, China
Tel: +86 459-6819207
Fax: +86 459-6819207
E-mail: [email protected]

Received date: January 25, 2013; Accepted date: March 04, 2014; Published date: March 06, 2014

Citation: Xu C, Shu S, Xia C, Wang B, Zhang HY, et al. (2014) Investigation on the Relationship of Insulin Resistance and Ketosis in Dairy Cows. J Veterinar Sci Technol 5: 162. doi:10.4172/2157-7579.1000162

Copyright: © 2014 Xu C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Ketosis is an important metabolic disease of dairy cows during the transition period, but it is fully unclear about its endocrine etiology. Our study is to clarify the relationship between oxidative stress, liver function, insulin resistance and ketosis in dairy cows. Sixteen ketotic Holstein cows (T) and twenty-four non-ketotic Holstein cows (C) were used as the experimental animals from an intensive dairy farm in Heilongjiang province, China. Blood samples from all experimental cows were collected at 14 days postpartum during morning fasting. Fifteen parameters for energy balance, liver function, oxidative stress, insulin sensitivity and glucose tolerance test between T and C were measured using commercial kits. Results showed that the concentration of plasma glucose (P<0.01) was lower in T compared with C cows, whereas there were marked increases in the concentration of plasma non-esterified fatty acids and beta-hydroxybutyric acid (P<0.01). The level of plasma AST (P<0.01), TBIL (P<0.05), and DBIL (P<0.01) increased significantly in T cows compared with C cows, but plasma CHE (P<0.01) and TP (P<0.05) decreased significantly, and no significant change in plasma ALT, IBIL, ALB, and GLO. Level of plasma malondialdehyde (MDA) and superoxide dismutase (SOD) was significantly higher in ketotic cows than that of non-ketotic cows (P<0.05), but value of plasma revised quantitative insulin sensitivity index (RQUICKI) was lower significantly in T cows than that of C cows (P<0.05). Concentration of plasma Glc increased significantly in T cows compared with C cows during glucose tolerance test (P<0.05). Therefore, the ketosic cows were in condition of negative energy balance, suffered to certain extent from liver function abnormality, and experienced oxidative stress and low insulin sensitivity. Therefore, a closed relationship between ketosis and insulin resistance should be related to liver function and oxidative stress that can cause insulin resistance.

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