Effects of Corn Meal and Flaxseed Oil Dietary Supplements on Fat Content in Milk and Rumen Microbial Flora of Dairy Cows

GUO Cheng; JI Wu-long; LI Na; FU Zi-lin; ZHANG Li-li; XU Xiao-feng

doi:10.19303/j.issn.1008-0384.2019.08.011

Volume 34 Issue 8

Aug. 2019

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Article Navigation > Fujian Journal of Agricultural Sciences > 2019 > 34(8): 939-946

GUO Cheng, JI Wu-long, LI Na, FU Zi-lin, ZHANG Li-li, XU Xiao-feng. Effects of Corn Meal and Flaxseed Oil Dietary Supplements on Fat Content in Milk and Rumen Microbial Flora of Dairy Cows[J]. Fujian Journal of Agricultural Sciences, 2019, 34(8): 939-946. doi: 10.19303/j.issn.1008-0384.2019.08.011

Citation:

GUO Cheng, JI Wu-long, LI Na, FU Zi-lin, ZHANG Li-li, XU Xiao-feng. Effects of Corn Meal and Flaxseed Oil Dietary Supplements on Fat Content in Milk and Rumen Microbial Flora of Dairy Cows[J]. Fujian Journal of Agricultural Sciences, 2019, 34(8): 939-946. doi: 10.19303/j.issn.1008-0384.2019.08.011

Citation:

GUO Cheng, JI Wu-long, LI Na, FU Zi-lin, ZHANG Li-li, XU Xiao-feng. Effects of Corn Meal and Flaxseed Oil Dietary Supplements on Fat Content in Milk and Rumen Microbial Flora of Dairy Cows[J]. Fujian Journal of Agricultural Sciences, 2019, 34(8): 939-946. doi: 10.19303/j.issn.1008-0384.2019.08.011

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Effects of Corn Meal and Flaxseed Oil Dietary Supplements on Fat Content in Milk and Rumen Microbial Flora of Dairy Cows

doi: 10.19303/j.issn.1008-0384.2019.08.011

Agriculture College, Ningxia University, Yinchuan, Ningxia 750021, China

Received Date: 2019-06-07
Rev Recd Date: 2019-08-03
Publish Date: 2019-08-01

Abstract

Abstract

Objective Changes on the fat content of milk from and rumen microbial flora in dairy cows fed with corn meal and flaxseed oil supplemented forage were studied. Method In a self-control experimentation, 4 Chinese Holstein cows of similar physical conditions and normal lactation were fed on a daily diet added with 1.5 kg of corn meal and 150 mL per animal of flaxseed oil for 7 pre-trial days followed by 15 days for the test. Result In the feed containing approximately 27% starch, the dietary supplements significantly lowered the fat content (P < 0.01) with a significantly higher lactose content (P < 0.05) in the milk produced by the cows. There were 29 microbial phyla found in the rumen. The flora of Tenericutes significantly decreased (P < 0.05), Actinobacteria and Planctomycetes significantly increased (P < 0.01), and Spirochaetae significantly increased (P < 0.05) over control. Among the 389 genera of microbes in the rumen, 110 were significantly different (P < 0.05). Comparing to control, Lactobacillus increased significantly (P < 0.01), Enterococcus decreased significantly (P < 0.01), Christensenellaceae R-7-group decreased significantly (P < 0.05), Prevotellaceae-UCG-001 increased significantly (P < 0.05), Lachnospiraceae-UCG-006 decreased significantly (P < 0.01), Lachnospiraceae-NA increased significantly, Butyrivibrio-2 decreased significantly (P < 0.05), and Ruminococcus-1 increased significantly. Conclusion Under the experimental conditions, the dietary supplementation of corn meal and flaxseed oil significantly reduced the fat content in milk of the dairy cows. It did not significantly alter the diversity but significantly changed the structure and abundance of the microbial flora in the cow rumen. The acidogenic as well as starch-utilizing bacteria significantly increased.
- dairy cow,
- milk fat reduction,
- 16S rDNA,
- high-throughput sequencing,
- rumen microbes

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References(38)

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