Effects of dietary n‐6/n‐3 polyunsaturated fatty acid ratios on the mass, and histological and ultrastructures of liver, spleen and thymus of 70‐day‐old Yangzhou Goslings

Journal of Animal Physiology and Animal Nutrition - Tập 100 Số 2 - Trang 391-400 - 2016
M. Z. Wang1, Luoyang Ding1, Jian Gao1, J.F. Wang1, Gang Zhou1, Jinyu Zhang1,2
1College of Animal Science and Technology, Yangzhou University, Yangzhou, China
2Yang Da Kang Yuan Dairy Company Limited, Yangzhou, China

Tóm tắt

SummaryThe objective of this study was to determine the effects of dietary n‐6/n‐3 polyunsaturated fatty acid (PUFA) ratios on the organ indexes, and histological and ultrastructures of organs including liver, spleen and thymus in 70‐day‐old Yangzhou goslings. One‐hundred and sixty 21‐day‐old Yangzhou goslings were randomly divided into 4 groups and fed 4 diets varying in the n‐6/n‐3 PUFA ratio from 3:1 up to 12:1. After 1‐week acclimation, the feeding experiment lasted for 6 weeks. At the end of the experimental period, goslings were slaughtered and the liver, spleen and thymus were weighed, and their histological and ultrastructures were examined. The results showed that the organ indices in the 3:1 group were remarkably higher than in the other three groups, whereas the mitochondrial square did not differ among four groups. The histological and ultrastructures of the liver, spleen and thymus were not affected by the diets with the lower n‐6/n‐3 PUFA ratios (3:1 and 6:1). However, feeding diets with the higher n‐6/n‐3 PUFA ratios (9:1 and 12:1), the nuclear chromatin was concentrated and marginalized; the cell membrane was contracted inwardly and disrupted; the mitochondrial membrane was damaged to some degree. In conclusion, the diet containing higher content of n‐3 PUFA might improve immune capacity of goslings the animal by accelerating the growth and maintaining cellular structures of organs like liver, spleen and thymus.

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Thông tin xuất bản

Journal of Animal Physiology and Animal Nutrition

Tập 100 Số 2

391-400

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