内蒙古呼伦贝尔草原短尾羊内脏Se含量检测评价

doi:10.12160/j.issn.1672-5190.2023.04.014

Abstract

Abstract:

[Objective] Hulun Buir grassland short-tailed sheep is an excellent breed of Mongolian sheep announced by the Ministry of Agriculture and Rural Affairs at the end of 2020. This paper performed systematic detection and evaluation of visceral selenium （Se） content in this sheep breed. [Method] A total of 170 visceral samples, including heart, lung, kidney, liver, small intestine, rumen, reticulum, and abomasum, were collected from 23 grassland short-tailed sheep reared in Ewenki grassland in Hulun Buir City, Inner Mongolia. The visceral Se content was determined by atomic fluorescence spectroscopy and the obtained data were subjected to statistical analysis. [Result] The highest visceral Se content （X±SD, μg/100 g） of the grassland short-tailed sheep was observed in kidney （47.26±19.18）, followed by lung（6.30±2.94）, small intestine （6.16±2.26）, heart （5.63±3.82）, liver （4.49±2.52）, reticulum （2.96±2.03）, rumen （2.84±1.40）, and abomasum （2.44±1.81）. The Se content of kidney was 7.5-19.4 times higher than that of the other visceral organs.The mean value of the Se content in substantive organs was extremely significantly （P<0.01） different from that in gastrointestinal tract. The visceral Se content exhibited a correlation with the age of the grassland short-tailed sheep. In general, higher visceral Se contents were found in 30- and 18-month-old sheep in comparison to 6- and 12-month-old sheep. The Se contents of kidney, lung, small intestine, heart, rumen, and abomasum were significantly （P<0.05） different among the four age groups. The most obvious age-related difference of visceral Se content was observed in kidney, and the Se content in kidney in 30-, 18-, 42-month-old sheep was 2.1-2.5 times higher than that in 6-month-old sheep. The visceral Se content was generally higher than that of muscle. [Conclusion] The viscera of Hulun Buir grassland short-tailed sheep have a significant effect of Se bioaccumulation. Kidney of this sheep breed is Se-rich food, and the other viscera are also Se-rich or Se-containing foods. Hulun Buir City is located in the Se shortage area in Northeast China. It is recommended to attach more importance to Se supplementation or Se-rich feeding of grassland short-tailed sheep in a scientific manner, which can make mutton and viscera more nutritious and healthy.

Key words: viscus, selenium content, grassland short-tailed sheep, Hulun Buir City

CLC Number:

ZHANG Limei,GUO Jun,YE Le,LIU Yujia,LIU Xiaoqi,GUO Lingzhi. Determination and Evaluation on Visceral Selenium Content in Hulun Buir Grassland Short-tailed Sheep in Inner Mongolia[J]. Animal Husbandry and Feed Science, 2023, 44(4): 101-108.

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Determination and Evaluation on Visceral Selenium Content in Hulun Buir Grassland Short-tailed Sheep in Inner Mongolia

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