Effects of Bamboo Leaf Flavonoids and Artemisia annua Extract on Milk Performance, Milk Somatic Cell Count and Serum Immune and Antioxidant Related Indexes of Dairy Cows with Subclinical Mastitis

  • HOU Kun ,
  • TONG Jinjin ,
  • CHU Kangkang ,
  • XIONG Benhai ,
  • JIANG Linshu
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  • 1. Beijing Institute of Animal Science and Technology, Beijing Key Laboratory of Cow Nutrition, Beijing 102206, China;
    2. Beijing Dairy Cattle Center, Beijing Capital Agribusiness Group, Beijing 100192, China;
    3. Beijing Institute of Animal Husbandry and Veterinary Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2019-04-16

  Online published: 2019-09-17

Abstract

This experiment was conducted to investigate the effects of bamboo leaf extract and Artemisia annua extract on milk performance, milk somatic cell count (SCC)and serum immune and antioxidant related indexes of dairy cows with subclinical mastitis. Eighteen Chinese Holstein cows with subclinical mastitis[SCC was (41.31+0.49)×104 cell/mL] with similar days in milk, similar milk yield, body weight of (590±15) kg, 2 to 4 parities were selected and randomly divided into 3 groups with 6 cows per group for feeding experiment. Cows in control group were a total mixed ration (TMR), while cows in bamboo leaf flavones group and Artemisia annua extract group were also fed TMR, and supplementary fed with bamboo leaf flavones (30 g/d) and Artemisia annua extract (60 g/d), respectively. The feeding experiment was conducted for 35 days, including pre-test period of 7 days, feeding period of 14 days and post feeding period of 14 days. Blood and milk samples were collected on day 1, 14, 28 to measure milk SCC, milk composition and serum immune-related factor contents and antioxidant indexes, and the milk yield was recorded. The results showed as follows:1) compared with the control group, the milk yield in bamboo leaf flavones group and Artemisia annua extract group was increased by 8.95% and 13.24% (P>0.05), respectively, the 4% fat corrected milk (FCM) yield and milk protein percentage on day 14 were significantly increased (P<0.05), and the milk SCC on day 14 was significantly decreased (P<0.05). 2) The contents of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in serum on day 14 in bamboo leaf flavones group and Artemisia annua extract group were significantly lower than those in control group (P<0.05); otherwise, the serum interleukin-2 (IL-2) content in serum in Artemisia annua extract group was significantly higher than that in control group (P<0.05). 3) Compared with the control group, the serum malondialdehyde (MDA) content on day 14 was decreased significantly (P<0.05), and serum superoxide dismutase (SOD) activity on day 14 tended to be increased both in bamboo leaf flavones group and Artemisia annua extract group (P=0.06). In conclusion, both bamboo leaf flavonoids and Artemisia annua extract can improve the mill performance, enhance the immune function and antioxidant capacity of dairy cows, and decrease the milk SCC of dairy cows with subclinical mastitis.

Cite this article

HOU Kun , TONG Jinjin , CHU Kangkang , XIONG Benhai , JIANG Linshu . Effects of Bamboo Leaf Flavonoids and Artemisia annua Extract on Milk Performance, Milk Somatic Cell Count and Serum Immune and Antioxidant Related Indexes of Dairy Cows with Subclinical Mastitis[J]. Chinese Journal of Animal Nutrition, 2019 , 31(9) : 4286 -4295 . DOI: 10.3969/j.issn.1006-267x.2019.09.043

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