Level of Aflatoxin in Some Fish Feeds from Fish Farming Processes, Feed Factories and Imported Feeds [Balik Üretim İçletmeleri, Yem Fabrikalari ve Yurtdişi Kaynakli Bazi Balik Yemlerinde Aflatoksin Düzeyleri]

Aflatoxins that are toxic metabolites for human and animals were determined in some fish feed. Eighty-five unit samples taken from "fish farming processes", "feed factories" and "imported feeds" in 1998, 1999 and 2000 were analyzed. In the analysis, thin layer chromatography (TLC) and enzyme linked immunosorbent assay (ELISA) technique were used. Consequently, aflatoxin levels above 20 ppb were detected in 20 samples and from 21.2 to 42.4 ppb in 85 samples. In 22 samples aflatoxin levels from 5.0 to 20.0 ppb were detected. Aflatoxin B1 analysis was performed on all samples with aflatoxin levels of more than 20 ppb. Most aflatoxin consists of Aflatoxin B1 (18.4-42.4 ppm). Aflatoxin was found below detection limits in 43 samples. The effect of feed types on aflatoxin distribution was not statistically significant. However, levels of aflatoxin were higher in samples that were taken from fish farming processes than from factory or imported feed samples

Level of aflatoxin in some fish feeds from fish farming processes, feed factories and imported feeds

WOS: 000189164100001Aflatoxins that are toxic metabolites for human and animals were determined in some fish feed. Eighty-five unit samples taken from "fish farming processes", "feed factories" and "imported feeds" in 1998, 1999 and 2000 were analyzed. In the analysis, thin layer chromatography (TLC) and enzyme linked immunosorbent assay (ELISA) technique were used. Consequently, aflatoxin levels above 20 ppb were detected in 20 samples and from 21.2 to 42.4 ppb in 85 samples. In 22 samples aflatoxin levels from 5.0 to 20.0 ppb were detected. Aflatoxin 131 analysis was performed on all samples with aflatoxin levels of more than 20 ppb. Most aflatoxin consists of Aflatoxin B1 (18.4-42.4 ppm). Aflatoxin was found below detection limits in 43 samples. The effect of feed types on aflatoxin distribution was not statistically significant. However, levels of aflatoxin were higher in samples that were taken from fish farming processes than from factory or imported feed samples

The Importance of ?-3 Series Fatty Acids in Marine Fish Larvae Nutrition and Recent Developments [Deniz Baliklari Larvalarinin Beslenmesinde ?-3 serisi Yag Asitlerinin Önemi ve Son Gelişmeler]

TIn general, marine fish larvae require ?-3 HUFA, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Larval growth, survival and larval activity are affected by dietary levels of essential fatty acids. Some pathological signs, such as abnormal pigmentation, hydrops etc. and low feed conversion efficiency, poor growth, mass mortality are related to ?-3 HUFA series fatty acids deficiency in larvae food. EPA/DHA ratio in live foods or microencapsuled diets is an important factor in larval development and survival

Level of aflatoxin in some fish feeds from fish farming processes, feed factories and imported feeds

Aflatoxins that are toxic metabolites for human and animals were determined in some fish feed. Eighty-five unit samples taken from "fish farming processes", "feed factories" and "imported feeds" in 1998, 1999 and 2000 were analyzed. In the analysis, thin layer chromatography (TLC) and enzyme linked immunosorbent assay (ELISA) technique were used. Consequently, aflatoxin levels above 20 ppb were detected in 20 samples and from 21.2 to 42.4 ppb in 85 samples. In 22 samples aflatoxin levels from 5.0 to 20.0 ppb were detected. Aflatoxin 131 analysis was performed on all samples with aflatoxin levels of more than 20 ppb. Most aflatoxin consists of Aflatoxin B1 (18.4-42.4 ppm). Aflatoxin was found below detection limits in 43 samples. The effect of feed types on aflatoxin distribution was not statistically significant. However, levels of aflatoxin were higher in samples that were taken from fish farming processes than from factory or imported feed samples

Effects of DL-alanine and betaine supplemented diets on the growth and body composition of fingerling rainbow trout (Oncorhynchus mykiss, W.1972)

WOS: 000168884600014In this study, the effects of feeds supplemented with DL-alanine and betaine on the growth and chemical composition of fingerling rainbow trout (Oncorhynchus mykiss) were investigated. Fish fed with DL-alanine (1.5% of diet) and betaine (1.5% of diet) supplemented diets had greater weight gains (35.36 +/-1.81 g and 38.47 +/-3.02 g respectively) than those fed a control diet (28.32 +/-0.31 g). It was found that the groups fed with attractant supplemented diets had better feed conversion and protein efficiency ratios than the control group. Whole body dry matter, fillet and whole body crude ash and crude protein ratios were similar in all the groups. The group fed a DL-alanine supplemented diet had a higher fillet dry matter ratio than the control group (p<0.05). The group fed a betaine supplemented diet had a lower whole body lipid ratio than control group (p<0.05) and all the groups were found to be similar in terms of fillet lipid ratios

The importance of omega-3 series fatty acids in marine fish larvae nutrition and recent developments

WOS: 000082411300014TIn general, marine fish larvae require omega-3 HUFA, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Larval growth, survival and larval activity are affected by dietary levels of essantial fatty acids. Some pathological signs, such as abnormal pigmentation, hydrops etc. and low feed conversion efficiency, poor growth, mass mortality are related to omega-3 HUFA series fatty acids deficiency in larvae food. EPA/DHA ratio in live foods or microencapsuled diets is an important factor in larval development and survival

Effects of DL-Alanine and Betaine Supplemented Diets on the Growth and Body Composition of Fingerling Rainbow Trout (Oncorhynchus mykiss, W.1972) [DL-Alanin ve Betain Katkili Yemlerin Gökkuşagi Alabaligi (Oncorhynchus mykiss, W. 1972) Fingerliklerinin Büyüme ve Vücut Besin Madde Bileşenlerine Etkileri]

In this study, the effects of feeds supplemented with DL-alanine and betaine on the growth and chemical composition of fingerling rainbow trout (Oncorhynchus mykiss) were investigated. Fish fed with DL-alanine (1.5% of diet) and betaine (1.5% of diet) supplemented diets had greater weight gains (35.36±1.81g and 38.47±3.02 g respectively) than those fed a control diet (28.32±0.31 g). It was found that the groups fed with attractant supplemented diets had better feed conversion and protein efficiency ratios than the control group. Whole body dry matter, fillet and whole body crude ash and crude protein ratios were similar in all the groups. The group fed a DL-alanine supplemented diet had a higher fillet dry matter ratio than the control group (p<0.05). The group fed a betaine supplemented diet had a lower whole body lipid ratio than control group (p<0.05) and all the groups were found to be similar in terms of fillet lipid ratios

Nutritional value of sea bass (Dicentrarchus labrax) fillets during frozen (-18°C) storage

Changes in proximate composition and amino acid content of frozen (-18°C) wild sea bass (Dicentrarchus labrax, L. 1758) fillets were investigated during 9 months of storage. Initial protein and lipid contents were 19.75% and 1.22%, respectively, and changed to 19.31% and 3.58% in the 9th month of storage. Amino acid analyses were performed at intervals in the initial, third, sixth and ninth months of storage. The initial ratio of essential/nonessential amino acid (g amino acid/16 g N) was 0.75. The reduction of the ratio was 0.01 in the 3rd month, 0.05 in the 6th month and 0.08 in the 9th month of frozen storage. The most abundant amino acids in sea bass fillets were aspartic acid, glutamic acid and lysine. Methionine, tyrosine and histidine were in lower concentrations than the other amino acids during the frozen storage. © TÜBİTAK

Nutritional value of sea bass (Dicentrarchus labrax) fillets during frozen (-18 degrees C) storage

WOS: 000230905400046Changes in proximate composition and amino acid content of frozen (-18 degrees C) wild sea bass (Dicentrarchus labrax, L. 1758) fillets were investigated during 9 months of storage. Initial protein and lipid contents were 19.75% and 1.22%, respectively, and changed to 19.31% and 3.58% in the 9th month of storage. Amino acid analyses were performed at intervals in the initial, third, sixth and ninth months of storage. The initial ratio of essential/nonessential amino acid (g amino acid/16 g N) was 0.75. The reduction of the ratio was 0.01 in the 3rd month, 0.05 in the 6th month and 0.08 in the 9th month of frozen storage. The most abundant amino acids in sea bass fillets were aspartic acid, glutamic acid and lysine. Methionine, tyrosine and histidine were in lower concentrations than the other amino acids during the frozen storage