Effects of Nutritional Factors and Feed Characteristics on Feed Intake

Higuera, Manuel de la

doi:10.1002/9780470999516.ch11

Cited by 73 publications

(57 citation statements)

References 89 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result was unexpected since there is evidence to suggest that fish control feed intake primarily to meet metabolic energy demands, and that cont rol is closer rela ted t o th e di gest ible a nd metabolisable energy content of the diet (MORALES et al, 1994;MÉDALE, 1994). Although there are reports in the literature regarding the effects of nutrients on food intake of fish, a multitude of factors could affect the control of food intake in fish (DE LA HIGUERA, 2001), for example, the great variability on ingredients composition of experimental diets may have affected the palatability in some treatments. The high inclusion of fats and animal proteins could have increased the feed intake in high energy diets while the presence of high carbohydrate and vegetable proteins content in low energy diets may have not be sufficient to decrease the palatability of the diets.…”

Section: Resultsmentioning

confidence: 99%

Protein to energy ratios in goldfish (Carassius auratus) diets

et al. 2013

View full text Add to dashboard Cite

The optimal dietary digestible protein to energy ratio is critical for the success of fish farming. Considering that it provides the proper development of the animals, this study was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for goldfish fingerlings. Diets were formulated to contain 28.0, 35.0, 42.0 and 49.0% DP and 3,600 and 3,200 kcal/ kg. The growth parameters evaluated were daily weight gain (DWG), feed intake (FI), feed conversion ratio (FCR), protein efficiency ratio (PER), protein productive value (PPV) and energy retention ratio (ERR) and specific growth rate (SGR). Regardless FI, all the parameters were affected by protein and energy levels and interaction between both factors was observed. The second-order polynomial equation best fitted to the DWG, SGR, FCR, PER and ERR with estimated requirement values of 38.81, 38.85, 41.05, 41.80 and 39.39% DP, respectively, at the 3,200 kcal/kg. A second-order polynomial model was significant only for the ERR data at the 3,600 kcal/kg with an estimated requirement value of 36.45% DP. Generally, fish fed diets containing 3,200 kcal/kg had better growth performance than fish fed 3,600 kcal/kg (P<0.01), indicating a higher feed efficiency. A 3,200 kcal/kg diet seems to be the proper DE level for meeting goldfish requirement for highest weight gain. Based on this experimental condition, we recommend the use of DP levels between 38.0-40.0% in diets for goldfish with 3,200 kcal/kg or a dietary protein to energy ratio between 119-125 mg/ kcal DE.Index terms: Energy requirement, feed intake, growth protein requirement, ornamental fish. RESUMOA ótima relação energia/proteína é importante para o sucesso da piscicultura. Considerando que a mesma fornece o adequado desenvolvimento dos animais, este estudo foi realizado para avaliar a relação energia/proteína digestível ótima para alevinos de kinguio. Dietas foram formuladas para conter 28,0; 35,0; 42,0 e 49,0% PD e 3600 e 3200 kcal/kg. Foram avaliados: ganho de peso diário (GPD), consumo de ração aparente (CRA), conversão alimentar aparente (CAA), taxa de eficiência protéica (TEP), valor produtivo protéico (VPP), taxa de retenção de energia (TRE) e taxa de crescimento especifico (TCE). Com exceção do CRA, todos os parâmetros foram afetados pelos níveis de proteína e energia e interação entre os dois fatores foram observados. O modelo que melhor se ajustou aos parâmetros GPD, TCE, CAA, TEP e TRE foi o polinomial de segunda ordem com valores de exigência de 38,81; 38,85; 41,05; 41,80 e 39,39% DP, respectivamente, para o nível de 3200 kcal ED/kg. O modelo polinomial de segunda ordem foi significativo apenas para os dados de TRE no nível de 3600 kcal ED/kg, com valor de exigência 36,45% PD. Os peixes alimentados com dietas contendo 3200 kcal/kg apresentaram melhor desempenho de crescimento do que os alimentados com 3600 kcal/kg (P<0,01), indicando uma maior eficiência alimentar. 3200 kcal/kg ED parece ser o nível adequado encontrado para kinguio para maior ganho d...

show abstract

Section: Resultsmentioning

confidence: 99%

Protein to energy ratios in goldfish (Carassius auratus) diets

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Although there are basis which supports the hypothesis that fish are able to control feed intake to meet energy requirements, many studies which observed this effect was diluted by indigestible bulk, such as cellulose or carboxi methyl cellulose. According to De La Higuera (2001), it is important to know whether fish regulate their feed intake primarily on the basis of energy concentration or whether there is a separate regulation of individual nutrients or nutrient groups, i.e. macronutrients (proteins, lipids and carbohydrates) and micronutrients (vitamins and minerals).…”

Section: Resultsmentioning

confidence: 99%

Effects of digestible protein to energy ratios on growth and carcass chemical composition of siamese fighting fish (Betta splendens)

et al. 2014

View full text Add to dashboard Cite

The expansion in the market of ornamental fish depends on the intensification of production systems and the generation of appropriate technologies. Therefore, it is necessary to know the nutritional requirements of each species for the formulation of nutritionally balanced diets. A 30-day feeding trial was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for Betta splendens fingerlings. Fifty-six all-male B. splendens with 1.03 ± 0.11 g average weight were randomly stocked into 56 1L-aquaria in a completely randomized design with a 2 x 4 factorial arrangement, comprising eight treatments and seven replication. Each fish was considered an experimental unit. Diets were formulated to contain 28.0, 35.0, 42.0 and 49.0% DP and 3,600 and 3,200 kcal/kg DE. The growth parameters evaluated in this trial were weight gain (WG), feed intake (FI), feed conversion ratio (FCR), protein efficiency ratio (PER) and specific growth rate (SGR). No difference (P > 0.05) was observed for WG, FCR and SGR. However, a higher FI was observed for fish fed diets containing 42.0% DP (P < 0.05). A positive effect of DP and DE on PER was observed in this study. Generally, according to the increase of DE levels, a reduction on PER was observed. Based on this experimental condition, we recommend the use of 28.0% DP and 3,200 kcal/kg DE in diets for B. splendens. Index terms:Protein requirement, ornamental fish, carcass composition, energy requirement, growth. RESUMOA expansão no setor produtivo de peixes ornamentais depende da intensificação dos sistemas de produção e da geração de tecnologias adequadas. Por isso, é necessário o conhecimento das exigências nutricionais de cada espécie para a formulação de rações nutricionalmente adequadas. Neste estudo, objetivou-se avaliar as diferentes relações energia:proteína digestível em dietas para alevinos de Betta splendens. O experimento teve a duração de 30 dias, sendo utilizados 56 alevinos machos de B. splendens com peso médio inicial de 1,03 ± 0,11 g. O delineamento experimental utilizado foi o inteiramente casualisado em arranjo fatorial, sendo composto por oito tratamentos e sete repetições, considerando-se um peixe como uma unidade experimental. Foram formuladas dietas práticas, cujos níveis de proteína digestível foram 28,0; 35,0; 42,0 e 49% e os níveis de energia digestível de 3.200 e 3.600 kcal/kg. Os parâmetros de desempenho produtivo avaliados foram: ganho em peso (GP), consumo de ração aparente (CRA), conversão alimentar aparente (CAA), taxa de eficiência protéica (TEP) e taxa de crescimento especifico (TCE). Não houve diferença significativa entre os tratamentos para GP, CAA, TCE, entretanto foi observado maior CRA para o nível de PD de 42% (P<0,05). A TEP apresentou diferença significativa, de maneira que quanto maior o nível de energia digestível menor a taxa de eficiência protéica. Com base nas condições experimentais deste estudo e na taxa de eficiência protéica, o melhor nível de PD e ED para melhor taxa de eficiência protéi...

show abstract

“…Feed acceptance depends upon other important aspects such as appearance, particle size and organoleptic properties related to smell, taste and texture (Jobling et al 2001), and these characteristics can be influenced by the choice of feed ingredients and processing conditions. According to Higuera (2001), the feeding stimulants that cause the greatest behavioral responses in fishes are those composed of free amino acids, nucleotides, nucleosides, and quaternary ammonium bases. Stimulant products should have low molecular weight and be nitrogencontaining, nonvolatile, amphoteric, water-soluble, stable to heat treatments, and have broad biologic distribution.…”

Section: Discussionmentioning

confidence: 99%

Use of shrimp protein hydrolysate in Nile tilapia (Oreochromis niloticus, L.) feeds

et al. 2009

View full text Add to dashboard Cite

A 45-day feeding trial was carried out to evaluate the use of shrimp protein hydrolysate (SPH) in diets for Oreochromis niloticus, L. SPH was included in isonitrogenous diets replacing fish meal protein by 0, 5, 10, and 20% and offered to Nile tilapia juveniles (1.7 ± 0.4 g) stocked in 40-L glass aquaria. The inclusion of SPH produced no significant differences (P C 0.05) in final weight, survival, weight gain, average daily gain, specific growth rate, feed conversion ratio, protein efficiency ratio, or apparent net protein utilization. The inclusion of SPH Nile tilapia diets significantly affected (P \ 0.05) the final fish body composition. Protein and ash contents decreased and fat content increased slightly with the increase in SPH. This study has demonstrated that SPH is a promising protein feedstuff and could account for as much as 6% of Nile tilapia diets with no adverse effects on growth and nutrient utilization.

show abstract

Effects of Nutritional Factors and Feed Characteristics on Feed Intake

Cited by 73 publications

References 89 publications

Protein to energy ratios in goldfish (Carassius auratus) diets

Protein to energy ratios in goldfish (Carassius auratus) diets

Effects of digestible protein to energy ratios on growth and carcass chemical composition of siamese fighting fish (Betta splendens)

Use of shrimp protein hydrolysate in Nile tilapia (Oreochromis niloticus, L.) feeds

Contact Info

Product

Resources

About