Molecular Nutrition

Effects of Cinnamic Aldehyde on Purine Derivatives Excretion, Milk Performance and Nitrogen Excretion of Dairy Cows

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  • 1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
    2. Institute of Animal Husbandry and Veterinary Medicine of Qingdao, Qingdao 266100, China

Received date: 2016-11-22

  Online published: 2017-06-07

Abstract

This experiment was conducted to determine the effects of cinnamic aldehyde (CA) on purine derivatives excretion, milk performance and nitrogen excretion of dairy cows. Forty Holstein cows with similar age, body weight, parity, milk yield, milk composition and lactation stage[(90±15) days in milk] were divided into 4 groups with 10 cows per group. The supplement levels of CA in control group and test groups 1, 2 and 3 were 0, 12, 18 and 24 g/(d·head), respectively. The pretest lasted for 15 days, and the test lasted for 60 days. The results showed as follows:1) the urinary purine derivatives excretions in test groups were significantly higher than those in control group (P<0.01), which in test groups 1, 2 and 3 were increased by 14.22%, 17.62% and 10.49% compared with the control group, respectively. 2) The milk yields in test groups were significantly higher than those in control group (P<0.05 or P<0.01), which in test groups 1, 2 and 3 were increased by 10.80%, 12.15% and 6.48% compared with the control group, respectively. The milk fat percentages in test groups 1 and 2 were significantly higher than those in control group (P<0.01), the milk protein percentages in test groups were significantly higher than those in control group (P<0.01), the milk somatic cell count in test groups were significantly lower than those in control group (P<0.01). 3) Compared with control group, the nitrogen total excretions in test groups were significantly reduced (P<0.01), which were reduced by 9.76%, 14.13% and 7.39% in test groups 1, 2 and 3, respectively. Base on the data of purine derivatives excretion, milk yield, milk composition content and nitrogen total excretion indices, it can be concluded that the suitable supplement level of CA is 18 g/(d·head) in the diet of dairy cows under the condition in the present study.

Cite this article

ZHANG Chengxi, LIU Kaidong, SUN Guoqiang . Effects of Cinnamic Aldehyde on Purine Derivatives Excretion, Milk Performance and Nitrogen Excretion of Dairy Cows[J]. Chinese Journal of Animal Nutrition, 2017 , 29(6) : 2010 -2017 . DOI: 10.3969/j.issn.1006-267x.2017.06.022

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