Molecular Nutrition

Effects of Starvation on Body Weight, Serum Hormone and Biochemical Indexes of Jiulong Yaks

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  • Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2016-12-01

  Online published: 2017-06-07

Abstract

This experiment was conducted to investigate the changes of body weight, serum hormone and biochemical indexes of Jiulong yaks under starvation stress during cold season. Eight 2-year-old Jiulong yaks, which were healthy, in good condition and consistent in body weight[(90.75±8.66) kg], were selected and randomly divided into control group and starvation group, each group had 4 replicates with 1 yak per replicate. Yaks in control group were normally fed, and those in starvation group were suffered from starvation. The experiment lasted for 7 d. On days 1, 3, 5 and 7, body weight was measure, and blood sample was collected through jugular vein. The results showed as follows:after 7 d starvation, body weight of yaks was significantly decreased (P<0.05), serum contents of glucose and insulin were significantly decreased (P<0.05), serum contents of non-esterified fatty acid, triglyceride, adiponectin and glucagon were significantly increased (P<0.05), serum contents of propionic acid and lactic acid as gluconeogenesis substances were significantly decreased (P<0.05), serum contents of glycerine and β-hydroxybutyric acid from body decompose were significantly increased (P<0.05), and serum activities of pyruvate carboxylase, fructose-1,6-bisphosphatase, phosphoenolpyruvate carboxykinase and glucose-6-phosphatase as key enzymes of gluconeogenesis were significantly increased (P<0.05). The results indicate that yaks use the energy stored in the body after starvation, evaluate gluconeogenesis to satisfy normal requirements, and maintain serum glucose content stability and vital activities.

Cite this article

REN Jianlin, WANG Zhisheng, PENG Quanhui, HU Rui, ZOU Huawei, JING Xiaoping, PU Qijian, ZENG Shaoyu . Effects of Starvation on Body Weight, Serum Hormone and Biochemical Indexes of Jiulong Yaks[J]. Chinese Journal of Animal Nutrition, 2017 , 29(6) : 2162 -2169 . DOI: 10.3969/j.issn.1006-267x.2017.06.039

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