China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (1): 296-305.doi: 10.16431/j.cnki.1671-7236.2020.01.035

• Products Quality and Safety • Previous Articles     Next Articles

Study on the Contents of Trace Elements and the Influencing Factors in Buffalo Milk in Guangxi

YU Xiaonan1,2, LIU Hongyan2, GUO xiaoqing2, ZHAO Qingyu2, LI Fadi1, ZHANG Junmin2   

  1. 1. College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China;
    2. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
  • Received:2019-07-22 Online:2020-01-20 Published:2020-01-17

Abstract: Buffalo milk was an important milk source in the South of China.In order to study the contents of trace elements in buffalo milk in Guangxi and the influence of different factors such as region,breed,lactation,60 samples of buffalo milk with 2 breeds in 3 lactation periods were collected from 3 buffalo farms in Xingning and Yongning district in Nanning and Lingshan district in Qinzhou,Guangxi province.The samples were digested by microwave digestion method.12 trace elements (Cr,Mn,Co,Cu,As,Se,Cs,Ba,Mo,Pb,Cd and Ni) were analyzed by inductively coupled plasma mass spectrometry method (ICP-MS).Correlation among 12 trace element contents was analyzed using Pearson correlation analysis.Differences in trace element contents between buffalo milk in different regions,breeds and lactation stages were compared by one-way analysis of variance.Multivariate analysis of variance was used to analyze the effect of interaction on trace elemental contents.The results showed that the spiked recovery of 12 trace elements in buffalo milk was 84.94% to 120.91%.The contents of Mn,Se,Cs and Ni in buffalo milk were significantly different among different regions (P<0.05).The contents of Mn and Cs in Lingshan were higher than those in other regions.The contents of Se and Ni in Xingning were higher than those in other region.The contents of Se and Ni in buffalo milk were significantly different between different breeds (P<0.05).The contents of Se and Ni in Nile buffalo were higher than that in Mora buffalo.The contents of Mn,Co,Cu,Se and Mo were significantly different among different lactation periods (P<0.05).The contents of Co,Cu and Se in colostrum were the highest among three lactation periods.The content of Mn in mature milk was higher than that in other lactation periods.The content of Mo in late milk was the highest among three lactation periods.The interaction between region and breed had no significant effect on the contents of trace elements in buffalo milk.

Key words: buffalo milk; trace element; region; variety; lactation

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