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Titolo:
Replacement of fish meal by a mixture of animal by-products in juvenile rainbow trout diets
Autore:
Lee, KJ; Dabrowski, K; Blom, JH;
Indirizzi:
Ohio State Univ, Sch Nat Resources, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 t Resources, Columbus, OH 43210 USA Pukyong Natl Univ, Dept Aquaculture, Pusan 608737, South Korea Pukyong Natl Univ Pusan South Korea 608737 re, Pusan 608737, South Korea
Titolo Testata:
NORTH AMERICAN JOURNAL OF AQUACULTURE
fascicolo: 2, volume: 63, anno: 2001,
pagine: 109 - 117
SICI:
1522-2055(200104)63:2<109:ROFMBA>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALTERNATIVE PROTEIN-SOURCES; ONCORHYNCHUS-MYKISS; DIGESTIBILITY; APPARENT; SALMON; GROWTH; AVAILABILITIES; NUTRITION; RATIOS; ENERGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Dabrowski, K Ohio State Univ, Piketon Res & Extent Ctr, Piketon, OH 45661 USA Ohio State Univ Piketon OH USA 45661 , Piketon, OH 45661 USA
Citazione:
K.J. Lee et al., "Replacement of fish meal by a mixture of animal by-products in juvenile rainbow trout diets", N AM J AQUA, 63(2), 2001, pp. 109-117

Abstract

A mixture of animal by-products (MAB) was tested to replace fish meal (FM)in dirts for juvenile rainbow trout Oncorhynchus mykiss. Fish averaging(+/- SD) 0.96 +/- 0.07 g were divided into 15 groups, and 3 groups were fed one of five isonitrogenous diets replacing 0, 20, 40. 60, or 100% of FM protein with similar percentages of MAB (control, MAB20. MAB40. MAB60, or MAB100, respectively). The MAB consisted of 25% meat and bone meal, 24.5% leathermeal. 20% squid liver powder, 15% feather meal, 7.5% blood meal (spray-dried). 7.5% poultry by product meal, and 0.25% each methionine and lysine. After 16 weeks of feeding, fish fed diets MAB40, MAB60, and MAB100 exhibited significantly lower growth performance than the fish fed the control and MAB20 diets. Apparent digestibility estimates of protein with different collection times (every 40 min and after 12 and 48 h) did not show, in a feces collection system, protein leaching into the watts for up to 48 h. The MAB substitution of up to 60% of FM protein in diets did not show differences inapparent protein digestibility (85.8 +/- 1.05% for MAB20, 83.1 +/- 0.45% for MAB40 and 82.7 +/- 2.67% for MAB60) compared with the control (85.0 +/- 1.88%). whereas in the MAB100 group digestibility (77.7 +/- 4.42%) was significantly lower than in the other groups. The apparent phosphorus absorption of test diet groups was significantly higher (36.9 +/- 11.12% for MAB20, 24.0 +/- 6.20% for MAB40, 57.1 +/- 5.22% for MAB60, and 57.4 +/- 5.34% for MAB100) than that of the control (8.3 +/- 0.15%). Concentrations of proteinand ash in the whole body increased as MAB substitution in dirts increased. The findings suggest that MAB could replace up to 28% of FM protein in diets for juvenile rainbow trout for 16 weeks without adverse growth effects.

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Documento generato il 10/07/20 alle ore 08:41:16