The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks

ABSTRACT The objective of this study was to assess the L-lysine effect in silver catfish, Rhamdia voulezi female reproduction. Four hundred fish were used distributed in a random in 16 net cages (25 fish each x 4 replicates = 100 fish per treatment). The treatments consisted in four diets, isoprotei...

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Autores principales:	Bittencourt,Fábio, Damasceno,Danielle Zanerato, Diemer,Odair, Boscolo,Wilson Rogério, Feiden,Aldi, Romagosa,Elizabeth
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	catfish Rhamdia voulezi amino acid L-lysine oocytes reproduction nutrition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100176
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spelling	oai:scielo:S0718-560X20180001001762018-04-17The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocksBittencourt,FábioDamasceno,Danielle ZaneratoDiemer,OdairBoscolo,Wilson RogérioFeiden,AldiRomagosa,Elizabeth catfish Rhamdia voulezi amino acid L-lysine oocytes reproduction nutrition ABSTRACT The objective of this study was to assess the L-lysine effect in silver catfish, Rhamdia voulezi female reproduction. Four hundred fish were used distributed in a random in 16 net cages (25 fish each x 4 replicates = 100 fish per treatment). The treatments consisted in four diets, isoproteic and isoenergetic (30% crude protein and 3,500 kcal kg-1 digestible energy) with different L-lysine levels: T1: 1.30; T2: 1.40; T3: 1.60 and T4: 1.95%. After 185 days of experiment 18 females per treatment were weighed, measured, and submitted to hormonal induction (0.5 and 5.0 mg kg-1 Carp Pituitary Extract). The females were then sacrificed and had their ovaries, liver and fat removed and the respective organosomatic indices were estimated. With regard to the reproductive parameters, the released oocytes, absolute fecundity and remaining ovaries were influenced (P < 0.05) by the diet, and the highest mean values were observed in the treatment with 1.95% L-lysine. Among the organosomatic indices, only the visceral fat was influenced (P < 0.05). The estradiol levels and the composition of essential amino acid in oocytes were not affected (P > 0.05). We can conclude that L-lysine affects the reproductive parameters and accumulation of visceral fat in R. voulezi.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100176en10.3856/vol46-issue1-fulltext-17
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	catfish Rhamdia voulezi amino acid L-lysine oocytes reproduction nutrition
spellingShingle	catfish Rhamdia voulezi amino acid L-lysine oocytes reproduction nutrition Bittencourt,Fábio Damasceno,Danielle Zanerato Diemer,Odair Boscolo,Wilson Rogério Feiden,Aldi Romagosa,Elizabeth The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks
description	ABSTRACT The objective of this study was to assess the L-lysine effect in silver catfish, Rhamdia voulezi female reproduction. Four hundred fish were used distributed in a random in 16 net cages (25 fish each x 4 replicates = 100 fish per treatment). The treatments consisted in four diets, isoproteic and isoenergetic (30% crude protein and 3,500 kcal kg-1 digestible energy) with different L-lysine levels: T1: 1.30; T2: 1.40; T3: 1.60 and T4: 1.95%. After 185 days of experiment 18 females per treatment were weighed, measured, and submitted to hormonal induction (0.5 and 5.0 mg kg-1 Carp Pituitary Extract). The females were then sacrificed and had their ovaries, liver and fat removed and the respective organosomatic indices were estimated. With regard to the reproductive parameters, the released oocytes, absolute fecundity and remaining ovaries were influenced (P < 0.05) by the diet, and the highest mean values were observed in the treatment with 1.95% L-lysine. Among the organosomatic indices, only the visceral fat was influenced (P < 0.05). The estradiol levels and the composition of essential amino acid in oocytes were not affected (P > 0.05). We can conclude that L-lysine affects the reproductive parameters and accumulation of visceral fat in R. voulezi.
author	Bittencourt,Fábio Damasceno,Danielle Zanerato Diemer,Odair Boscolo,Wilson Rogério Feiden,Aldi Romagosa,Elizabeth
author_facet	Bittencourt,Fábio Damasceno,Danielle Zanerato Diemer,Odair Boscolo,Wilson Rogério Feiden,Aldi Romagosa,Elizabeth
author_sort	Bittencourt,Fábio
title	The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks
title_short	The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks
title_full	The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks
title_fullStr	The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks
title_full_unstemmed	The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks
title_sort	effects of l-lysine in the diet of silver catfish (rhamdia voulezi) female broodstocks
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100176
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The effects of L-lysine in the diet of silver catfish (Rhamdia voulezi) female broodstocks

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