We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The effects of dietary Zinc on growth, immunity and reproductive performance of female Macrobrachium nipponense prawn.
- Authors
Zhang, Meng; Huang, Youhui; Li, Yiming; Cai, Mingqi; Zhao, Yunlong
- Abstract
We accessed the effects of dietary Zn on growth, immunity and reproductive performance in female Macrobrachium nipponense. After feeding with a homemade diet containing 21, 50, 81, 136 and 203 mg kg−1 Zn for 60 days, prawns showed a significant increase in weight gain, improved survival, higher hepatosomatic and gonadosomatic indices (p < 0.05) in group 50 and 81 mg kg−1 Zn. Broken‐line analysis indicated that the optimal concentration of dietary zinc was 75.48 mg kg−1. Dietary Zn had drastically increased crude lipid content in body composition (p < 0.05), while moisture, ash and crude protein had no significant difference among groups (p > 0.05). Zn content in hepatopancreas linearly increased along with increases in dietary Zn, while Zn content in muscle and haemolymph had no difference in Zn supplemented groups (p > 0.05). The highest activities of Cu/Zn‐SOD, T‐SOD and CAT in hepatopancreas were in 81 mg kg−1 and 50 mg kg−1 Zn diet, respectively. MDA had the lowest content in 21 to 81 mg kg−1 Zn levels. The highest haemolymph AKP activity was in 81 mg kg−1 Zn diet group, while the highest PO activity was in 136 mg kg−1 Zn diet. Both levels of progesterone and estradiol and gene expression of VG and VGR were highest in 50 to 81 mg kg−1 Zn levels. These results provided evidence that dietary Zn ranging from 50 to 81 mg kg−1 has a positive impact on growth, immunity and reproductive performance of female prawn.
- Subjects
MACROBRACHIUM; SHRIMPS; BODY composition; ZINC; WEIGHT gain; ZINC supplements
- Publication
Aquaculture Research, 2021, Vol 52, Issue 4, p1585
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.15010