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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.19.0388    [Accepted] Published online October 21, 2019.
Effects of Lonicera japonica extract on performance and blood biomarkers of inflammation and oxidative stress during perinatal period in dairy cow
Yiguang Zhao1  , Zhiwen Tang1  , Xuemei Nan1  , Fuyu Sun1  , Linshu Jiang2,*  , Benhai Xiong1,* 
1State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
2Beijing Key Laboratory for Dairy Cow Nutrition, Beijing University of Agriculture, Beijing, 102206, China
Correspondence:  Linshu Jiang, Tel: +86-10-80796368, Fax: +86-10-80798091, Email: jls@bac.edu.cn
Benhai Xiong, Tel: +86-10-80796368, Fax: +86-10-80798091, Email: jls@bac.edu.cn
Received: 9 May 2019   • Revised: 16 July 2019   • Accepted: 9 May 2019
Abstract
Objective
An experiment was conducted to evaluate the effects of Lonicera japonica extract (LJE) on milk production, rumen fermentation and blood biomarkers of energy metabolism, inflammation and oxidative stress during the perinatal period of Holstein dairy cows.
Methods
Eighteen Holstein dairy cows were used in a complete randomized design experiment with 3 dietary treatments and 6 cows per treatment. All cows received the same basal TMR including a prepartal diet (1.35 Mcal of NEL/kg of DM, 13.23% CP) from -60 d to calving and a postpartal diet (1.61 Mcal of NEL/kg of DM, 17.39% CP) from calving to 30 DIM. The 3 dietary treatments were TMR supplemented with LJE at 0 (control), 1 and 2g/kg DM, respectively. LJE was offered from 21 d before calving to 30 DIM. DMI and milk production were measured daily after calving. Milk and rumen fluid samples were collected on 29 and 30 d after calving. On -10, 4, 14 and 30 d relative to calving, blood samples were collected to analyze the biomarkers of energy metabolism, inflammation and oxidative stress.
Results
Compared with control diet, LJE supplementation at 1 and 2 g/kg DM increased DMI, milk yield and reduced milk SCC. LJE supplementation also decreased the concentrations of blood biomarkers of pro-inflammation (IL -1β, IL-6 and haptoglobin), energy metabolism (nonesterified fatty acid (NEFA) and β-hydroxybutyric acid (BHBA)) and oxidative stress (reactive oxygen metabolites (ROM)), meanwhile increased the total antioxidant capacity (T-AOC) and superoxide dismutase (SOD) concentrations in blood. No differences were observed in rumen pH, VFA and ammonia-N (NH3-N) concentrations between LJE supplemented diets and the control diet.
Conclusion
Supplementation with 1 and 2 g LJE /kg DM could increase DMI, improve lactation performance, and enhance anti-inflammatory and antioxidant capacities of dairy cows during perinatal period.
Keywords: Blood Biomarkers; Dairy Cows; Lactation; Lonicera Japonica; Perinatal Period


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