The present study was conducted to evaluate the efficacy of organic acid blends as dietary antibiotic replacer in marine fish olive flounder, Paralichthys olivaceus. Fish averaging 3.5 ± 0.05 g (mean SD) were fed one four experimental diets: (1) without or (Control/CON); (2) with antibiotic—50 mg oxytetracycline per kg body weight day (OTC); (3) blend A—4 g/kg diet (OAA); and (4) B—4 (OAB), for 10 weeks. At end experiment, total intestinal bacterial counts fish-fed OAA, OAB OTC significantly...

The present experiment was conducted to evaluate the effects of trace mineral (Cu, Zn, Mn and Fe) premixes from inorganic chelated (chelated 2-hydroxy-4-methylthiobutanoic acid or hydroxy analog methionine; Mintrex™, Novus International Inc., St. Charles, MO, USA) sources, in rockfish, (Sebastes schlegeli). fed diets containing inhibitor phytic acid. Seven isonitrogenous (46% crude protein/CP) isocaloric (16.63 KJ available energy per g diet) semi-purified comprising a Basal control...

Abstract Juvenile hybrid striped bass ( Morone chrysops × M. saxatilis ) were fed one of eight diets to evaluate meat and bone meal as a source crude protein essential amino acids. Diets contained either 0, 15, 20, 25, 30, 35, 40 or 45% substituted for an isonitrogenous amount soybean fish meal. All 7 wk, followed by 2‐wk digestibility trial. Mean consumption, weight gain, feed conversion ratio not significantly affected addition into diets. Intraperitoneal liver lipid concentrations Fillet...

This work evaluated the performance of Litopenaeus vannamei to low fish meal diets supplemented with 2-hydroxy-4-(methylthio)butanoic acid (HMTBa). A basal diet 150.0 g kg−1 anchovy was designed. Two positive control were formulated reduce at 50% and 100% 1.0 2.0 MERA™ MetCa (calcium salt 84% HMTBa activity), respectively. nearly equivalent acted as negative controls, without supplementation. total 50 clear-water tanks 500 L stocked 2.22 ± 0.19 shrimp under 70 animals m−2. Shrimp survival...

A growth trial was conducted to evaluate the effects of chelated (Mintrex™ Mn, Mn-M) or inorganic (MnSO4·H2O, Mn-S) manganese (Mn) on growth, feed utilization, tissue Mn deposition and liver superoxide dismutase (SOD) activity in turbot Scophthalmus maximus. semi-purified basal diet formulated be deficient (3.7 mg kg−1) contained tricalcium phosphate sodium phytate at levels 20 5 g kg−1, respectively. Ten other diets were made by adding five (5, 10, 20, 35 55 mg kg−1 diet) either Mn-M Mn-S...

Rapid expansion of aquacultural production is placing increasing demand on fish oil supplies and intensified the search for alternative lipid sources. Many potential sources contain low concentrations long chain n-3 fatty acids conversion dietary linolenic acid to longer highly unsaturated a relatively inefficient process in some species. A 6-week study was conducted compare tissue (FA) hybrid striped bass fed either 18:3n-3 (alpha-linolenic acid; ALA) or 18:4n-3 (stearidonic SDA). Hybrid...

This study was conducted to estimate the association of age at first calving (AFC) with lactation traits as well lifetime performance in Murrah buffaloes.Data on and life time buffaloes (n = 679), maintained Indian Council Agricultural Research-Central Institute for Research Buffaloes, Hisar, India during period 1983 through 2017, were deduced calculate heritability estimates, genetic phenotypic correlation different traits. The univariate animal model fitted variance components separately...

An 8-week trial was conducted to compare the efficacy of a chelated copper (Cu) with inorganic Cu (CuSO4), in diet Japanese sea bass (Lateolabrax japonicus). Six diets were prepared based on two basal (semi-purified or practical) at inclusion levels (0 and 4 mg kg−1 from chelated-Cu), accordingly named as S0, SI4, SM4, P0, PI4 PM4 respectively. Each fed quadruplicate groups (initial weight: 65.0 ± 0.03 g) during trial. Fish practical had higher feed intake, specific growth rate, protein...

The present study was conducted to determine the safe and toxic levels of dietary copper in juvenile olive flounder, Paralichthys olivaceus, fed Mintrex ® copper, a chelated source. Fish averaging 3.8 ± 0.13 g (mean SD) were 1 10 diets ( n = 3) containing 7 (Cu 0 ), 10.4 (CuM 5 15.8 24.9 20 43.4 40 82.1 80 158 160 308 320 658 640 1267 1280 ) mg Cu/kg diet. At end 12 wk feeding trial, weight gain (WG), specific growth rate, protein efficiency ratio fish CuM significantly higher than those , P...

Plant protein-based diets are widely used for common carp (Cyprinus carpio var. Jian). The plant source antagonist, such as phytate, negatively affects the bioavailability of trace minerals, but this aspect was not considered in previous studies on species. A 10-week growth trial conducted to investigate effects inorganic Zinc (ZnSO4·7H2O, Zn-S) and organic Zn (2-hydroxy-4-(methylthio) butanoic Zinc, Zn-M) performance, retention antioxidant responses (initial weight 10.0 ± 0.03 g). Eleven...

A study was conducted to evaluate the response of Pacific white shrimp Litopenaeus vannamei inorganic or chelated sources dietary zinc.Two sets diets, one supplemented with zinc from sulfate (55, 80, 116, 168, 243 and 363 ppm zinc) other a source (methionine hydroxy analog chelate; 39, 52, 65, 78 104 were fed replicate groups juvenile (N = 8; 0.4 g initial weight) for 6 wk.All experimental diets contained 1.38% phytic acid reflecting levels in typical commercial feeds.Final weight, growth...

Abstract Culture of walleye Sfizostedion vitreum is one the largest components public sector aquaculture in eastern U.S. and there increasing interest private culture. However, nutritional requirements are unknown experimental diets for use quantifying have not been identified. We formulated four practical fed those to triplicate groups with an initial weight 13 g per fish. The contained either casein (CAS), + gelatin (CG), arginine (CA), or crystalline amino acids (CGAA) as sources acids....

Abstract Lake sturgeon Acipenser fulvescens are imperiled throughout their native range, and hatchery-reared fish often stocked to facilitate population restoration. However, the rearing of hatchery requires knowledge nitrogenous excretion rates for efficient culture system design maintenance. Total ammonia nitrogen (TAN) urea (UN) were quantified in age-0 lake that either fasted or fed brine shrimp Artemia spp. In first experiment, three different size-classes (small [10–20 g], medium...