Optimizing the Growth, Health, Reproductive Performance, and Gonadal Histology of Broodstock Fantail Goldfish (Carassius auratus, L.) by Dietary Cacao Bean Meal
| Autor: | Eman M Zaki, Shimaa A. Amer, Dina M.M. AlSadek, Doaa A. El-Araby, Hanan Al-Khalaifah, Alshimaa A. Khalil |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Randomized block design
Broodstock Feed conversion ratio fantail goldfish Article 03 medical and health sciences chemistry.chemical_compound Animal science lcsh:Zoology Fantail lcsh:QL1-991 Testosterone Theobroma cacao L 030304 developmental biology 0303 health sciences Meal growth performance lcsh:Veterinary medicine General Veterinary biology Triglyceride 04 agricultural and veterinary sciences biology.organism_classification chemistry reproductive physiology 040102 fisheries lcsh:SF600-1100 0401 agriculture forestry and fisheries Animal Science and Zoology Sex ratio |
| Zdroj: | Animals Volume 10 Issue 10 Animals, Vol 10, Iss 1808, p 1808 (2020) Animals : an Open Access Journal from MDPI |
| ISSN: | 2076-2615 |
| DOI: | 10.3390/ani10101808 |
| Popis: | The potential effects of cacao bean meal, Theobroma cacao L., (CBM) on the growth, health status, blood biochemical parameters, antioxidant, immune status, physiological parameters, female reproductive performance, and gonadal histological features of fantail goldfish (Carassius auratus, L.) were evaluated using a complete randomized block design with sex as a block. The trial lasted for 60 days. A total of 54 healthy fantail goldfish (36 broodstock females and 18 broodstock males) were randomly allocated into three treatments with supplementation of three levels of cocoa powder 0, 5, and 10 g kg&minus 1 diet, CBM0, CBM5, and CBM10, respectively, with the sex ratio being four females:two males per replicate. The body weight gain and feed conversion ratio of males were increased in the CBM10 treatment (p < 0.05). The CBM10 diet improved relative feed costs (p < 0.05). Females fed on the CBM10 diet had an increase in the serum level of total protein (p = 0.001). Females fed on a diet supplemented with CBM5 showed a decrease in the serum level of triglyceride compared to females fed on CBM0 and CBM10 diets (p = 0.03). CBM10 diet increased the serum superoxide dismutase (SOD) activity of fish compared to CBM0 and CBM5 diets (p = 0.004). Serum levels of testosterone and estradiol were significantly increased in males fed on the CBM10 diet. The female reproductive performance was improved by CBM supplementation (p < 0.05). Ovarian histology exhibited increased granulation and follicle numbers after dietary CBM supplementation compared to the control treatment. Therefore, cacao bean meal can be used as a feed supplement in the diets of fantail goldfish for improving the growth, health status, and female reproductive performance, economic efficiency, and gonadal histological structure. |
| Databáze: | OpenAIRE |
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