干旱区生态环境知识资源中心(Arid): Stable isotopes of C and N as dietary indicators of Nile tilapia (Oreochromis niloticus) cultivated in net cages in a tropical reservoir

Arid

DOI	10.1016/j.aqrep.2020.100458
	Stable isotopes of C and N as dietary indicators of Nile tilapia (Oreochromis niloticus) cultivated in net cages in a tropical reservoir
	Ferreira de Moraes, Cyntia Rafaela; de Attayde, Jose Luiz; Henry-Silva, Gustavo Gonzaga
通讯作者	de Moraes, CR (corresponding author), Univ Fed Ceara UFC, Inst Ciencias Mar LABOMAR, Programa Posgrad Ciencias Marinhas Trop PPGCMT, Av Abolicao 3207, BR-60165081 Fortaleza, Ceara, Brazil.
来源期刊	AQUACULTURE REPORTS
ISSN	2352-5134
出版年	2020
卷号	18
英文摘要	The relative contribution of natural feed sources and commercial diets to the nutrition of Nile tilapia (Oreochromis nilloticus) was evaluated in a net cage production carried out in a reservoir in the semi-arid northeast region of Brazil. The present study tested the hypothesis that tilapia uses natural sources of feed for growth, even when confined in cages and artificial feed resources are available. The fish and various feed sources (commercial feed, seston and periphyton) were sampled and the water quality was monitored during the cultivation, which was carried out for 120 days. The fish were fed three times daily with two commercial feeds of 40 and 32 % crude protein, both of which used fish meal as a protein source. Stable isotopes analyses were carried out by measuring the C-13 and N-15 of fish muscle tissue and the feed items using the MixSIAR mixing model to determine the relative contribution of the nutrient sources to fish growth. The tilapia showed adequate weight gains with the total contributions of the feed items: periphyton (14.4 %), seston (51.2 %) and commercial feed (34.4 %) throughout the 120 days of culture. It can be concluded that the natural feed sources of seston and periphyton contributed more to the growth of the Nile tilapia than the commercial feed when cultivated in net cages, changing the notion that the commercial feed contributes predominantly to the intensive farming of this species in cages. The results of the present study suggest a more sustainable feed management in the farming of Nile tilapia in net cages.
英文关键词	Tilapia culture Nutrition Environmental sustainability Carbon Nitrogen
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000603388900013
WOS关键词	SMALL-SCALE AQUACULTURE ; SILVER CARP ; TROPHIC ECOLOGY ; FISH ; CULTURE ; FOOD ; NITROGEN ; SUSTAINABILITY ; MANAGEMENT ; DELTA-C-13
WOS类目	Fisheries
WOS研究方向	Fisheries
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369163
作者单位	[Ferreira de Moraes, Cyntia Rafaela] Univ Fed Ceara UFC, Inst Ciencias Mar LABOMAR, Programa Posgrad Ciencias Marinhas Trop PPGCMT, Av Abolicao 3207, BR-60165081 Fortaleza, Ceara, Brazil; [de Attayde, Jose Luiz] Univ Fed Rio Grande Norte UFRN, Dept Ecol, Ctr Biociencias, Av Senador Salgado Filho 3000, BR-59064741 Natal, RN, Brazil; [Henry-Silva, Gustavo Gonzaga] Univ Fed Rural Semiarido UFERSA, Ctr Ciencias Biol & Saude, Dept Biociencias, Av Francisco Mota 572, BR-59625900 Mossoro, RN, Brazil
推荐引用方式 GB/T 7714	Ferreira de Moraes, Cyntia Rafaela,de Attayde, Jose Luiz,Henry-Silva, Gustavo Gonzaga. Stable isotopes of C and N as dietary indicators of Nile tilapia (Oreochromis niloticus) cultivated in net cages in a tropical reservoir[J],2020,18.
APA	Ferreira de Moraes, Cyntia Rafaela,de Attayde, Jose Luiz,&Henry-Silva, Gustavo Gonzaga.(2020).Stable isotopes of C and N as dietary indicators of Nile tilapia (Oreochromis niloticus) cultivated in net cages in a tropical reservoir.AQUACULTURE REPORTS,18.
MLA	Ferreira de Moraes, Cyntia Rafaela,et al."Stable isotopes of C and N as dietary indicators of Nile tilapia (Oreochromis niloticus) cultivated in net cages in a tropical reservoir".AQUACULTURE REPORTS 18(2020).