Effect of dietary essential fatty acids on level of oestradiol‐17β and vitellogenin, reproductive performance and larval quality of striped catfish (Pangasianodon hypophthalmus) in out‐of‐spawning season

2020 ◽  
Vol 51 (9) ◽  
pp. 3900-3909
Author(s):  
Wahyu Pamungkas ◽  
Dedi Jusadi ◽  
Muhammad Zairin ◽  
Mia Setiawati ◽  
Eddy Supriyono ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Reproductive Performance ◽  
Essential Fatty Acids ◽  
Spawning Season ◽  
Pangasianodon Hypophthalmus ◽  
Larval Quality ◽  
Striped Catfish

scholarly journals Lake restoration influences nutritional quality of algae and consequently Daphnia biomass

Hydrobiologia ◽  
2020 ◽  
Vol 847 (21) ◽  
pp. 4539-4557 ◽  
Author(s):  
S. J. Taipale ◽  
K. Kuoppamäki ◽  
U. Strandberg ◽  
E. Peltomaa ◽  
K. Vuorio
Keyword(s):  
Fatty Acids ◽  
Nutritional Quality ◽  
Positive Impact ◽  
Essential Fatty Acids ◽  
Keystone Species ◽  
Zooplankton Biomass ◽  
Epa And Dha ◽  
Phytoplankton Communities ◽  
Restoration Measures

AbstractFood quality is one of the key factors influencing zooplankton population dynamics. Eutrophication drives phytoplankton communities toward the dominance of cyanobacteria, which means a decrease in the availability of sterols and long-chain polyunsaturated fatty acids (EPA and DHA). The effects of different restoration measures on the nutritional quality of the phytoplankton community and subsequent impacts on zooplankton biomass have rarely been considered. We analyzed the nutritional quality of phytoplankton in the eutrophic Lake Vesijärvi in southern Finland over a 37-year period, and studied the impacts of two restoration measures, biomanipulation and hypolimnetic aeration, on the abundance of high-quality phytoplankton. We found that biomanipulation had a positive impact on the abundance of taxa synthesizing sterols, EPA, and DHA and, concurrently, on the biomass of the keystone species Daphnia. In contrast, hypolimnetic aeration did not result in such a beneficial outcome, manifested as a decrease in the abundance of Daphnia and frequent phytoplankton blooms dominated by cyanobacteria suggesting reduction in the nutritional quality of food for Daphnia. Our analysis shows that the determination of the nutritional value of algae and the contribution of essential fatty acids and sterols is an effective method to evaluate the success of various restoration measures.

scholarly journals Fattening rabbits in mobile arks: effect of housing system on in vivo oxidative status and meat quality

2016 ◽  
Vol 24 (4) ◽  
pp. 303 ◽  
Author(s):  
S. Mattioli ◽  
M. Martino ◽  
S. Ruggeri ◽  
V. Roscini ◽  
L. Moscati ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Meat Quality ◽  
Essential Fatty Acids ◽  
Quality Parameters ◽  
Oxidative Status ◽  
Housing System ◽  
Longissimus Lumborum

<p>The aim of this trial was to study the effect of an alternative housing system on the oxidative status and meat quality of fattening rabbits. From May to June 2014, 60 rabbits of 35 d of age were reared in Mobile Arks (MA) placed on alfalfa grass and frequently moved for 40 d. To assess the health status of animals, blood samples were collected at slaughter in MA and in conventional cages (C). Meat quality parameters were also evaluated. Concerning the <em>in vivo </em>oxidative status, ark-reared rabbits showed higher thiobarbituric reactive substances values than C ones, probably for the higher motor activity due to the larger living area. The lipid percentage of <em>Longissimus lumborum </em>muscle was lower (1.22 <em>vs. </em>1.48%) in the ark group. There were no significant differences in the muscle pH, colour, water holding capacity and cooking loss. Given the higher intake of grass, rich in vitamins, carotenes, polyphenols and polyunsaturated fatty acids, the antioxidant content of meat was higher in ark-reared rabbits (7.42 <em>vs. </em>6.82 µg/g of retinol, 719.2 <em>vs. </em>683.3 ng/g of α-tocopherol, respectively). Even the fatty acid profile of MA rabbits reflected the higher intake of essential fatty acids from grass and the n-3 long chain polyunsaturated fatty acids (arachidonic acid, eicosapentaenoic acid and docosahexaenoic acid) were almost doubled. Our study suggested that the fattening of rabbits in ark system could be a possible alternative system to improve the meat quality of rabbits.</p><p><strong><br /></strong></p>

scholarly journals Effect of Enriched Feed by Different n-6 Fatty Acids Levels at 0% of n-3 on Danio rerio Reproductive Performance

2007 ◽  
Vol 5 (1) ◽  
pp. 51
Author(s):  
N.B.P Utomo ◽  
A. Rosmawati ◽  
I. Mokoginta
Keyword(s):  
Fatty Acids ◽  
Fish Species ◽  
Danio Rerio ◽  
Reproductive Performance ◽  
Essential Fatty Acids ◽  
Fertilization Rate ◽  
The Body ◽  
Two Factors ◽  
The Stability ◽  
Somatic Index

<p>Lipid and fatty acids are two factors determining reproductive performance of fish and survival rate of hatched larvae. Lipid has important role as energy source and to maintain the stability of membrane permeability.  The requirement of fatty acids differs among fish species.  Freshwater fishes need more n-6 than n-3 fatty acids, or appropriate combination of them.  In several fish species, feeding HUFA increase their fecundity, fertilization rate and eggs quality.  In this study, zebra fish, <em>Danio rerio</em> were fed with diet containing 0% n-3 essential fatty acids and different n-6 level; 0, 1 and 2%.  The result showed that there were no significant differences in gonado somatic index and several reproductive performances observed.  However, 1% of n-6 fatty acids supplementation produced a higher protein and lipid content in the body by 16.85% and 55.10%, respectively.</p> <p>Keywords: fatty acid, n-3, n-6, <em>Danio rerio</em>, reproductive performance</p> <p> </p> <p>ABSTRAK</p> <p>Lemak dan asam lemak merupakan faktor yang sangat mempengaruhi performa reproduksi dan kelangsungan hidup larva yang menetas. Lemak berperan penting sebagai sumber energi dan menjaga kestabilan permeabilitas membran. Kebutuhan asam lemak berbeda untuk setiap jenis ikan.  Ikan air tawar biasanya lebih banyak membutuhkan asam lemak <em>n</em>-6 daripada asam lemak <em>n</em>-3 atau campuran asam lemak <em>n</em>-6 dan <em>n</em>-3. Pada beberapa ikan , pemberian HUFA melalui pakan induk dapat meningkatkan fekunditas, derajat pembuahan dan kualitas telur.  Pada penelitian ini ikan zebra diberi pakan mengandung asam lemak esensial dengan kadar <em>n</em>-3 tetap (0%) dan <em>n</em>-6 berbeda yaitu 0, 1 dan 2%. Hasil penelitian menunjukkan bahwa tidak ada perbedaan nyata terhadap nilai Gonado Somatik Indeks serta beberapa parameter penampilan reproduksi lainnya pada ikan zebra, <em>Danio rerio</em>. Namun kadar asam lemak <em>n</em>-3 sebesar 0% dan <em>n</em>-6 sebesar 1% menghasilkan kadar protein dan kadar lemak tubuh tertinggi yang masing-masing mencapai 16,85% dan 55,10%</p> <p>Kata kunci: asam lemak,  <em>n</em>-3, <em>n</em>-6, <em>Danio rerio</em>, performa reproduksi</p>

scholarly journals Utilization of Cinnamon Leaf and Shrimp Flour as an Enhancer of Catfish Meat Quality

2017 ◽  
Vol 20 (1) ◽  
pp. 1
Author(s):  
Mia Setiawati ◽  
Suclyadi Dairun ◽  
Muhammad Agus Suprayudi ◽  
Nur Bambang Priyo Utomo
Keyword(s):  
Meat Quality ◽  
Feeding Rate ◽  
Pangasianodon Hypophthalmus ◽  
Feed Formulation ◽  
Test Parameters ◽  
Shrimp Head ◽  
Striped Catfish ◽  
Average Body ◽  
Average Body Weight

Catfish (Pangasianodon hypophthalmus) is a freshwater fish that has been produced in the form of a filet. One of the problems in producing good catfish fillet is compactness and brightness of catfish farmed meat. This research aimed to get feed formulation as enhancer  meat quality of striped catfish with added Cinnamon leaves flour (Cinnamomum burmannii)  and used shrimp head meal. A Fish with a weight of  208.98±25.76 g reared in 12 floating nets cage (2x1x1.5 m3) with density of 15 fish/nets for 60 days. As treatment, fish were fed with feed contains 1% cinnamon leaves,  45% shrimp head meal, and combined of cinnamon leaves and shrimp head meal, and as control used feed were formulated without cinnamon leaves and shrimp head meal. Fish were fed 2 times a daily with feeding rate 3.5% of average body weight of<br />fish. The test parameters observed were physical, chemical and organoleptic test of catfish meat. The results showed feed with contains cinnamon leaves and shrimp head meal could decrease level of body fat 14.7% compared than control (p&lt;0.05). Feed with used cinnamon leaves and shrimp head meal gave a texture of<br />fillet fish more compact,  elastic and color of fillet fish white.

scholarly journals Effects of essential fatty acids and feeding regimes on egg and offspring quality of European eel: Comparing reproductive success of farm-raised and wild-caught broodstock

Aquaculture ◽  
2020 ◽  
Vol 529 ◽  
pp. 735581 ◽  
Author(s):  
Johanna S. Kottmann ◽  
Jonna Tomkiewicz ◽  
Ian A.E. Butts ◽  
Ivar Lund ◽  
Charlotte Jacobsen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Reproductive Success ◽  
Essential Fatty Acids ◽  
European Eel ◽  
Offspring Quality ◽  
Feeding Regimes

Effects of n−3 HUFA levels in broodstock diet on the reproductive performance and egg and larval quality of the Japanese flounder, Paralichthys olivaceus

Aquaculture ◽  
2000 ◽  
Vol 187 (3-4) ◽  
pp. 387-398 ◽  
Author(s):  
Hirofumi Furuita ◽  
Hideki Tanaka ◽  
Takeshi Yamamoto ◽  
Manabu Shiraishi ◽  
Toshio Takeuchi
Keyword(s):  
Reproductive Performance ◽  
Paralichthys Olivaceus ◽  
Japanese Flounder ◽  
Larval Quality ◽  
Broodstock Diet

scholarly journals Effects of arachidonic acid supplementation in maturation diet on female reproductive performance and larval quality of giant river prawn (Macrobrachium rosenbergii)

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2735 ◽  
Author(s):  
Chanpim Kangpanich ◽  
Jarunan Pratoomyot ◽  
Nisa Siranonthana ◽  
Wansuk Senanan
Keyword(s):  
Arachidonic Acid ◽  
Reproductive Performance ◽  
Gonadosomatic Index ◽  
Macrobrachium Rosenbergii ◽  
Hepatosomatic Index ◽  
Hatching Rate ◽  
Low Salinity ◽  
Larval Quality ◽  
Dietary Treatments

The giant river prawn (Macrobrachium rosenbergii) is one of the most farmed freshwater crustaceans in the world. Its global production has been stalling in the past decade due to the inconsistent quality of broodstock and hatchery-produced seeds. A better understanding of the role of nutrition in maturation diets will help overcome some of the production challenges. Arachidonic acid (20:4 n-6, ARA) is a fatty acid precursor of signaling molecules important for crustacean reproduction, prostaglandins E and F of the series II (PGE2 and PGF2α), and is often lacking in maturation diets of shrimp and prawns. We examined the effects of ARA in a combination of different fish oil (FO) and soybean oil (SO) blends on females’ reproductive performance and larval quality. Adult females (15.22 ± 0.13 g and 11.12 ± 0.09 cm) were fed six isonitrogenous and isolipidic diets containing one of two different base compositions (A or B), supplemented with one of three levels ofMortierella alpine-derived ARA (containing 40% active ARA): 0, 1 or 2% by ingredient weight. The two base diets differed in the percentages of (FO and SO with diet A containing 2% SO and 2% FO and diet B containing 2.5% SO and 1.5% FO, resulting in differences in proportional contents of dietary linoleic acid (18:2n-6, LOA) and docosahexaenoic acid (22:6n-3, DHA)). After the eight-week experiment, prawns fed diet B with 1 and 2% ARA supplement (B1 and B2) exhibited the highest gonadosomatic index (GSI), hepatosomatic index (HSI), egg clutch weight, fecundity, hatching rate, number of larvae, and reproductive effort compared to those fed other diets (p ≤ 0.05). Larvae from these two dietary treatments also had higher tolerance to low salinity (2 ppt). The maturation period was not significantly different among most treatments (p ≥ 0.05). ARA supplementation, regardless of the base diet, significantly improved GSI, HSI, egg clutch weight and fecundity. However, the diets with an enhanced ARA and LOA (B1 and B2) resulted in the best reproductive performance, egg hatchability and larval tolerance to low salinity. These dietary treatments also allow for effective accumulation of ARA and an n-3 lcPUFA, DHA in eggs and larvae.

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