Consulta: subjectFacets:"Individual rearing"
Registros recuperados: 3
Data/hora: 10/06/2024 18:19:51

Can individual feed conversion ratio at commercial size be predicted from juvenile performance in individually reared Nile tilapia Oreochromis niloticus?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Rodde, Charles; Chatain, Beatrice; Vandeputte, Marc; Quoc Trinh, Trong; Benzie, John A.h.; De Verdal, Hugues.
Feed conversion ratio (FCR), the ratio between feed intake and body weight gain, is of major interest for improving aquaculture sustainability through reduced feed costs and environmental impacts. Demonstrating whether FCR measured in juvenile fish is an accurate predictor of their performance during the whole rearing period is critical to developing genetic improvement programs for this trait. This is especially true for estimates obtained in individually reared fish, for which this has high implications regarding the size of the necessary rearing structures. We obtained individual FCR from 30 male Nile tilapia Oreochromis niloticus from the GIFT strain individually reared in a recirculating system, from 36 to 260 g mean weight. They were fed twice a day...
Tipo: Text
Palavras-chave: Feed efficiency; GIFT tilapia; Individual rearing; Selective breeding.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00630/74175/73757.pdf

The Effects of Feed Restriction and Isolated or Group Rearing on the Measurement of Individual Feed Intake and Estimation of Feed Conversion Ratio in Juvenile Nile Tilapia (Oreochromis niloticus) for Selective Breeding Purposes
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Rodde, Charles; Vandeputte, Marc; Quoc Trinh, Trong; Douchet, Vincent; Canonne, Marc; Benzie, John A. H.; De Verdal, Hugues.
Accurately measuring the phenotype at the individual level is critical to the success of selective breeding programs. Feed efficiency is a key sustainability trait and is typically approached through feed conversion ratio (FCR). This requires measurements of body weight gain (BWG) and feed intake (FI), the latter being technically challenging in fish. We assessed two of the principal methods for measuring feed intake in fish over consecutive days: (1) group rearing 10 fish per group and video recording the meals and (2) rearing fish individually on a restricted ration. Juvenile Nile tilapia (Oreochromis niloticus) from the Genetically Improved Farmed Tilapia (GIFT) strain and the Cirad strain were entered into the study (128 GIFT and 109 Cirad). The GIFT...
Tipo: Text
Palavras-chave: Feed efficiency; Individual rearing; Group rearing; Fish; Video analyses; Feed intake.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00677/78924/81292.pdf

Population, Temperature and Feeding Rate Effects on Individual Feed Efficiency in European Sea Bass (Dicentrarchus labrax)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Rodde, Charles; Vandeputte, Marc; Allal, Francois; Besson, Mathieu; Clota, Frederic; Vergnet, Alain; Benzie, John A. H.; De Verdal, Hugues.
Using breeding programs to improve feed efficiency, the ratio between fish body weight gain (BWG) and feed intake (FI), could increase aquaculture sustainability through reduced feed costs and environmental impact. To this end, individual phenotypic information is required. Individual FI can be measured by isolating each fish. Under these conditions, restricting the feeding rate has proved relevant to improve feed efficiency indirectly by selecting faster-growing animals. Moreover, a restricted feeding rate reduces the work load of collecting uneaten pellets after each meal. The approach assumes the most efficient fish at high and low feeding rates are the same, but this assumption remains untested. In European sea bass (Dicentrarchus labrax), feed...
Tipo: Text
Palavras-chave: Aquaculture; Individual rearing; Feed efficiency; Feeding rate; Fasting tolerance; Sea bass.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00654/76614/77767.pdf