Animal performance and reproductive aspects of femaleRhamdia quelenfed on different levels of digestible energy

Tessaro, Lucélia; Toledo, César Pereira Rebechi de; Neumann, Giovano; Krause, Ricardo Andrei; Meurer, Fábio; Natali, Maria Raquel Marçal; Bombardelli, Robie Allan

doi:10.1111/are.12087

Cited by 17 publications

(16 citation statements)

References 33 publications

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“…According to Signor et al (2013), the capacity of egg production of R. voulezi is directly related to the class of body weight, in other words, larger broodfish produce larger number of oocytes. In addition, the absence of effect on the average of spawning females observed in this study was also described by Tessaro et al (2012) for R. quelen females, but the values were slightly higher, ranging between 76.72 and 89.63% with diets supplemented by different energy levels.…”

Section: Discussionsupporting

confidence: 78%

“…According to Reidel et al (2010), diets with 3,250 kcal kg -1 digestible energy and 35% crude protein for catfish kept in net cages caused faster gonad development and an extension of the spawning period. Therefore, it is evident that an appropriate nutrition enables the enrichment of the ovarian and testicular tissues, and consequently benefits reproduction (Coldebella et al, 2011;Tessaro et al, 2012).…”

Section: ____________________mentioning

confidence: 99%

“…Nevertheless, we have observed significant progress in the development of priority investigations in order to understand the relationship between nutrition and reproduction mainly because it is a species of native fish (Coldebella et al, 2011;Tessaro et al, 2012). Parra et al (2010) observed changes in the morphometry of the eggs and larvae survival as a result…”

Section: Introductionmentioning

confidence: 99%

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

Bittencourt¹,

Damasceno²,

Diemer³

et al. 2018

lajar

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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 × 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.

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Section: Discussionsupporting

confidence: 78%

Section: ____________________mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Bittencourt¹,

Damasceno²,

Diemer³

et al. 2018

lajar

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“…The gonadosomatic index suffers little influence from dietary components like lipids (Coldebella et al, 2013) or energy content (Tessaro et al, 2014). In silver catfish, the gonadosomatic index is strongly influenced by seasonality and, in both sexes, the gonadosomatic peak coincides with testosterone peak (Barcellos et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Supplementation with microencapsulated lemongrass essential oil improves protein deposition and carcass yield in silver catfish (Rhamdia quelen)

Rampelotto

Lima

Pinheiro

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. The aim of this study was to investigate the effect of dietary supplementation with Cymbopogon flexuosus essential oil (EO) on productive performance, metabolic parameters and body and fillet composition of adult silver catfish, Rhamdia quelen. Total length, condition factor, weight gain, specific growth rate, hepatosomatic index, visceral fat content and fillet composition were not affected by EO supplementation. Plasma total protein, globulin and triglycerides were reduced by EO supplementation. Supplementation with 1 mL EO kg -1 diet increased carcass yield and protein deposition in the carcass, while reducing gonadosomatic index and fat deposition in the carcass when compared to control group. In addition, 1 mL EO kg -1 diet also improved feed intake when compared to 3 mL EO kg -1 diet. Our results suggest that EO up to 1 mL kg -1 diet can be used in fish feed to improve protein deposition and carcass yield of silver catfish.Keywords: Cymbopogon flexuosus, citral, growth performance, gonads, body composition.A suplementação com óleo essencial de capim-limão microencapsulado melhora a deposição de proteína e o rendimento de carcaça de jundiás (Rhamdia quelen) RESUMO. O objetivo deste estudo foi investigar o efeito da suplementação na dieta com óleo essencial de Cymbopogon flexuosus (EO) sobre o desempenho produtivo, os parâmetros metabólicos e a composição corporal e de filés de jundiás (Rhamdia quelen) adultos. O comprimento total, o fator de condição, o ganho de peso, a taxa de crescimento específico, o índice hepatossomático, o teor de gordura visceral e a composição dos filés não foram afetados pela suplementação com EO. Os níveis plasmáticos de proteína total, globulina e triglicérides foram reduzidos pela suplementação com EO. A suplementação com 1 mL de EO kg -1 de dieta aumentou o rendimento de carcaça e a deposição de proteína na carcaça, mas reduziu o índice gonadossomático e a deposição de gordura em comparação ao grupo controle. Além disso, 1 mL de EO kg -1 de dieta também melhorou o consumo de ração em comparação com 3 mL de EO kg -1 de dieta. Os resultados sugerem que se pode utilizar até 1 mL de EO kg -1 de dieta na alimentação de peixes para melhorar a deposição de proteína e a produtividade de carcaça de jundiás em fase de engorda. Palavras-chave:Cymbopogon flexuosus, citral, desempenho produtivo, gônadas, composição corporal.

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“…Higher energy levels do not improve the fish or their reproductive performance. In addition, lipid supplements to diets to increase energy levels (soybean oil) induce cytoplasmic vacuoles in the hepatocytes of these fish (Tessaro et al 2014).…”

Section: Nutritional Jundi a Requirementsmentioning

confidence: 99%

Nutrition and Feeding Aspects for Jundiá (Rhamdia quelen) Rhamdia quelen Nutrition and Feeding

Santos

Meurer

2018

Reviews in Aquaculture

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The jundiá or silver catfish (Rhamdia quelen Quoy & Gaimard, 1824) is species native to the Americas, omnivorous, with a tendency towards carnivorous feeding habits. The species presents commercial potential, and therefore, knowledge on its nutritional requirements, as well as basic feed ingredients, is essential. Its tendency towards carnivorous feeding habits leads to some concerns regarding plant ingredient digestion abilities, although rice, soybean, flax, sorghum, ground corn or oat bran can be used as feed ingredients for this species, since they present good digestibility coefficients. In order to guarantee adequate performance of metabolic, immunological and reproductive functions, jundiá feed can be supplemented with micronutrients that minimize the effects of antinutritional factors present in plant ingredients. Plant ingredients present several economic advantages such as suitable quality, competitive prices and the fact that they are widely available in South Brazil.

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Animal performance and reproductive aspects of femaleRhamdia quelenfed on different levels of digestible energy

Cited by 17 publications

References 33 publications

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

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

<b>Supplementation with microencapsulated lemongrass essential oil improves protein deposition and carcass yield in silver catfish (<i>Rhamdia quelen</i>)

Nutrition and Feeding Aspects for Jundiá (Rhamdia quelen) Rhamdia quelen Nutrition and Feeding

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