Diets containing crude glycerin modify the ovary histology, cause reproductive harm on Nile tilapia females and impair the offspring quality
| Autor: | Alexandre Henrique Buzzi, Fábio Meurer, Taís Voelkl Chagas, Ahiana Cássia de Oliveira Pedreira, Robie Allan Bombardelli, Mirna Adriane Syperreck, Anna Cristina Strieder Dalmaso, Juliana Kasper Mewes, Rogério José Chiella |
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| Rok vydání: | 2021 |
| Předmět: |
0303 health sciences
food.ingredient Reproductive success Offspring Fish farming media_common.quotation_subject Tilapia 04 agricultural and veterinary sciences Broodstock Aquatic Science Biology biology.organism_classification 03 medical and health sciences Nile tilapia food Animal science 040102 fisheries 0401 agriculture forestry and fisheries Vitellogenesis Reproduction 030304 developmental biology media_common |
| Zdroj: | Aquaculture. 533:736098 |
| ISSN: | 0044-8486 |
| Popis: | The production of quality tilapia fingerlings is becoming a bottleneck in the production chain. To solve this problem, broodsotck nutrition has been evaluated in studies focused on the effects of new foods and potential diets. Crude glycerin, a biodiesel co-product, has great feed potential owing to its global supply prospects and high nutritional value. This study evaluated the effects of feeding Nile tilapia broodstock with rations containing different levels of crude glycerin. The subsequent growth; reproduction; plasma levels of calcium, glucose, and triglycerides; liver and ovary histology; the centesimal composition of different female organs/tissues; and offspring quality were evaluated. A total of 400 females and 200 males were fed for ten months with pelleted rations containing 320 g of digestible protein/kg, 13.40 MJ of digestible energy/kg, and 0, 40, 80, 120, and 160 g of crude glycerin/kg. The tilapia underwent reproductive management in hapas for egg collection and incubation, and the offspring were raised for 30 days. Fish rations containing crude glycerin caused reproductive harm in females, decreasing the percentage of spawning females, amount of spawning, offspring survival to incubation, and protein content in the ovaries (p 0.05). Fish rations containing glycerin changed the metabolism of lipids and proteins in the females and also possibly changed the rhythm or regulation of vitellogenesis. These changes directly impacted oocyte maturation and ovulation and affected reproductive success and offspring quality. Nile tilapia female fed with rations containing crude glycerin does not interfere with the growth and health of females or fingerlings but causes reproductive harm by decreasing egg production and hatching rates. |
| Databáze: | OpenAIRE |
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