Distribution of Vitamin E in a Few Species of Fish

Sugii, Kisaburo; Kinumaki, Toyosuke

doi:10.2331/suisan.34.420

Cited by 8 publications

(5 citation statements)

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“…When the intake of such vitamins increases, a transfer to the eggs is observed (Sugii and Kinumaki 1968;Kinumaki et al 1972), but the effects on fecundity and egg quality have not been evaluated.…”

Section: Essential Fatty Acids and Related Liposoluble Substancesmentioning

confidence: 99%

“…In rainbow trout, dietary tocopherol appears very efficiently transferred to eggs (Sugii and Kinumaki 1968), but it seems that stores are sufficient to permit a normal reproduction without dietary supplementation over a period of eight months before spawning (King et al 1983). On the contrary, Takeuchi et al (1981) observed abnormalities in spawning success (number of broodstock which spawn), in survival rate up to the eyed stage, in hatchability and survival of hatched larvae in vitamin E -deprived ayu.…”

Section: Essential Fatty Acids and Related Liposoluble Substancesmentioning

confidence: 99%

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Interaction “nutrition-reproduction” in fish

Luquet

Watanabe

1986

Fish Physiol Biochem

108

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In wild fish, gonad maturation and spawning induce modifications in feeding behaviour and dynamics of body stores which are possibly responsible for metabolic disorders. Conversely, food manipulations can modify reproduction of captive female broodstock. A restricted diet during early stages of the life cycle delays the first maturation age, a quantitatively restricted food supply during the stages of oocyte differentiation reduces the egg number, while a reduction of food levels during the last phases of oogenesis has only a small effect on egg size, composition and hatchability. During the spawning period, salmonid female broodstock seem to be more able to utilize carbohydrates than immature fish, they valorize the energy brought in by fats and have low quantitative requirements for proteins (28%). On the other hand, Red Sea bream broodstock have higher needs for proteins (45%).The incorporation into diet of liposoluble vitamins and essential fatty acids is necessary for normal reproduction, but (n-6) fatty acids seem to play a more important role than in juveniles. Although the effects and physiological role of carotenoids are not yet well known in salmonids, they are necessary for normal development in Red Sea bream. Although little work has been done on the effects of mineral nutrition, special attention must be paid to trace elements, manganese in particular.The major part of this review concerns female broodstock, since very little interest has been devoted to males.

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Section: Essential Fatty Acids and Related Liposoluble Substancesmentioning

confidence: 99%

Section: Essential Fatty Acids and Related Liposoluble Substancesmentioning

confidence: 99%

Interaction “nutrition-reproduction” in fish

Luquet

Watanabe

1986

Fish Physiol Biochem

108

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“…According to Sugii and Kinumaki (1968) and King (1985) at spawning, transfer of dietary alpha-tocopherol during egg development from the liver to the ovary and from the yolk to the developing embryo possibly influenced the quality of eggs and vitality of the resulting offspring. This could be substantiated with the data of the present study.…”

Section: Discussionmentioning

confidence: 99%

“…Females that fed on diets provided with higher levels of a-TOH not only produced larger eggs but also had higher mean values of GS1 than those fed on diets with lower levels. This could be attributed to changes in the pattern of essential fatty acids due to transfer of a'-TOH to the ovary according to Sugii and Kinumaki (1968) on rainbow trout. This result is in agreement with Izquierdo el aL (2001) who staled that gonadal development and fecundity are affected by certain essential dietary nutrients such as Lipid and fatty acids that have been identified as major dietary factors that determine successful reproduction and survival of offspring.…”

Section: Discussionmentioning

confidence: 99%

“…In some other fishes alpha-tocopherol acetate proved to be a reproductive promoter. In rainbow trout, dietary tocopherol appeared very efficiently transferred to eggs (Sugii and Kinumaki, 1968). However body stores were sufficient to produce normal reproduction without dietary supplementation over a period of eight months before spawning (King et al y 1983).…”

Section: Introductionmentioning

confidence: 99%

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Effect of ^tocopherol Acetate on Fecundity and Reproductive Physiology of Oreochromis Niloticus and O. Aureus Broodstock.

2003

Egypt. J. of Aquatic Biolo. and Fish.

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A study was conducted to determine the effect of vitamin E, (a-tocopherol acetate a-TOH) supplementation on the fecundity and reproductive performance of Nile tilapia Oreochromis niloticus and O. aureus. R eproductive performance was assessed in the females, in the developing eggs and in the resultant offspring, in an attempt to determine the optimum nutrition for successful spawning of O. niloticus and O. aureus. The reproductive response of O. niloticus and O. aureus to alpha-tocopherol acetate was nearly the same regarding egg number and quality, hatchability, gonadosomatic index and quality of the resulting offspring, Results revealed that alpha-tocopherol acetate greatly improved not only egg and sperm quality but also seed production. None of the three levels of alpha-tocopherol acetate had any obvious effect on the mean relative fecundity of either O. niloticus or O. aureus. Females of both strains that fed on a diet supplemented with 50 mg «-tocopherol acetate/kg produced larger eggs than females of the control that fed on diet without supplemental alpha-314 Gamal A. Mohamed. et aL tocopherol, or on diets supplemented with lower levels of a -TOH, The highest mean hatching percentage and lowest mean percentage of deformed larvae were observed in eggs extruded from females fed 50 mg a-TOH/kg-supplemented diet in both strains. While lower mean values of hatching percentage and higher mean values of deformed larvae percentage were detectable in eggs of those females that were fed supplemental 25 and 5-mg a-TOH/kg diet. Fry of the third treatment attained the highest mean body weight. The smaller sizes of fry were obtainable from eggs produced by females fed the lower levels of a-TOH. Fry of females that fed tocopherol -free diet was the smallest. Females that fed on diets provided with higher levels of

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