Effects of dietary fish oil replacement by poppy seed oil on growth performance and fillet quality of rainbow trout (Oncorhynchus mykiss)

Abstract

Rainbow trout (Oncorhynchus mykiss) were fed replacement of fish oil with diets including poppy seed oil (PSO; 0%, 50% and 100%). At the end of the 90‐day feeding period, the water holding capacity of the fillets decreased when the storage time increased. The colour and pH values were affected by both storage and diets. The hardness, springiness, gumminess and chewiness index of the fillet samples decreased as a consequence of increasing storage time, whereas the cohesiveness values of the fillets increased. The addition of PSO increased unsaturated fatty acids and reduced saturated fatty acids in the fatty acid composition of the fillets. These results demonstrated that the fatty acid (FA) composition of the rainbow trout fillets was reflecting the FA composition of dietary treatments and oils sources. The total mesophilic and psychrophilic bacteria count of the fish oil (FO), poppy seed oil/fish oil (PSO/FO) and poppy seed oil (PSO) samples was found within the legal limit on the third day of storage; however, it was found above the legal limits on the fifth day of storage. The sensory evaluation results showed that the fish fed with PSO diet were found to be non‐desirable. The results of the study suggested that the blend of 50% fish oil and 50% poppy seed oil could be used as a replacer of fish oil in diets for rainbow trout to obtained the best growth performance, fillet quality and storage conditions.

Effects of Replacement Cold Press Poppy Seed (Papaver somniferum) Oil to Fish Oil at Different Proportions on the Growth Performance, Blood Parameters, and Digestive Tracks Histopathology in Juvenile Common Carp (Cyprinus carpio)

“…Te quantity of linoleic acid in the diet raised signifcantly (P < 0.05) as the fraction of poppy seed oil in the feed increased (Table 1). Te combination of poppy seed oil with fsh oil in rainbow trout feeds increased growth performance, according to a study on the growth performance and fesh quality of trout [7]. Te current study yielded similar results; it was observed that increasing the quantity of poppy seed oil in the experimental diet formulation improved carp growth and feed utilization performance.…”

“…In recent years, the use of substitute options for fsh oil has become a very important topic because fsh oil is widely utilized as a human nutritional supplement and in the ration of many farm animal diets, particularly poultry [3]. For that reason, various research studies have focused on plant-origin oils as a possible replacement for fsh oil in aquafeeds [4][5][6][7][8]. Studies and industrial trends suggest that fsh oil inclusion rates in aquafeeds have decreased as a result.…”

“…One of the most important reasons for this is that fsh oil contains a high percentage of polyunsaturated fatty acids necessary for fsh [13]. Poppy seed oil's efects on trout growth and fllet quality have been researched since it is believed that it may be utilized as the primary source of oil in aquafeeds due to the unsaturated fatty acids it contains [7]. Te aim of this study was to clarify the potential of poppy seed oil to modify the fatty acid content in aquaculture feeds formulated for common carp and to determine the changes occurring in growth performance, health status, and digestive tract in common carp that were fed with these experimental feeds.…”

Tilapia can be a Beneficial n-3 LC-PUFA Source due to Its High Biosynthetic Capacity in the Liver and Intestine

“…In fish, feed compositions, such as dietary fatty acids, are the main factors for flesh quality . In the studies of Atlantic salmon (Salmo salar) and golden pompano (Trachinotus ovatus) rainbow trout (Oncorhynchus mykiss), the fish oil or moderate n -3 PUFA diet intake is beneficial to the improvement of fillet edible quality and texture. − In the present study, muscle texture measures, including tenderness, hardness, adhesiveness, chewiness, and gumminess, in fish fed diets D2 and D3 are significantly higher than the other dietary groups. The results demonstrated that diets D2 and D3 with LA/ALA ratios of 6 and 3, respectively, are also conducive to the muscle texture of farmed tilapia.…”

Modelling the impact of replacing fish oil with plant oils: A meta‐analysis to match the optimal plant oil for major cultured fish

“…Eventually, 328 articles were included in this research (Figure 1) and their detailed information is stored in Table S1. Among all the included articles, 73 were conducted on Oncorhynchus mykiss , 4,23,38–108 67 were about Salmo salar , 109–175 36 were for Oreochromis niloticus , 176–211 27 investigated Sparus aurata ,…”