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conclusions

1. For brooding reception klarievyh catfishes in artificial conditions the method of artificial reproduction at which and samyokam and to males apply a double injection atsetonirovannogo a pituitary body is modified: preliminary - in quantity 0,3мг a pituitary body on 1кг masses of fish and razreyoshajushchuju - 2 mg on 1кг masses of fish.

It is noticed, that with mass augmentation sayomok their absolute fruitfulness increases.

2. At cultivation of commodity catfishes in UZV the best fish-breeding poyokazateli are received at higher density of alighting - the Daily average gain of fish reached 220, 260 pieces/m3 7-8г, that exceeds growth rate of such traditional objects of aquiculture, as a trout and sturgeon. NaiYObolshej individual mass (570г) and the greatest exit ryboprodukyotsii (130 kg/m3) catfishes have reached 260 pieces/m3 at density of alighting

3. At cultivation commodity klarievogo a catfish in UZV rise in temperature with 24°С to 30°С with 8 to 16 ch with the further fall to 24°С to 8 ch is optimum astatichnyj a daily temperature mode, pribliyozhennyj to natural, i.e. Its use allows

To lower expenses of forages for 11 %, to raise survival rate of fish to 98 %, to increase an exit ryboproduktsii by 8 % in comparison with indicators at the constant thermomode accepted in fish culture.

4. Use of various temperature modes in limens 27±3°С has not rendered essential influence on eksgererno-interernye pokayo

zateli klarievogo a catfish, except for augmentation gonadosomaticheskogo

Index of females (18,37 %). The tendency of augmentation of mass of the branchiate device, and decrease in the maintenance of intrinsic fat at the fishes who have been grown up at is noted

Optimum astatichnom a thermomode.

5. Klarievyj a catfish on a meat chemical compound (the protein maintenance - 17,5 % and fat - 4,9 %) the nanosecond concedes to many kinds of fishes cultivated in aquiculture that testifies to its high commodity qualities and does by perspective object for ryborazvedenija.

6. Grown up at different thermomodes in UZV commodity catfishes and soyoderzhavshiesja before reproduction polovozrelye fishes were healthy. Their indicators of blood corresponded to physiological norm, remaining the best at the commodity fishes containing at optimum astatichnom rubbed -

morezhime.

7. The sensibility klarievyh the catfishes containing at peremenyonom and constant thermomodes, to parasites of sort Dactylogyrus has appeared insignificant. In the presence of originators of diseases at fishes was vyjavyoleno decrease in the maintenance of haemoglobin on 12 % and increase of level SOE in 2 times. However these indicators remained within physiological noryomy - N - 7,9г / %, SOE-12,5 mm/ch, quantity of erythrocytes - 1620 thousand/mkl

8. Use astatichnogo a temperature mode, priblizhenyonogo to natural, at cultivation commodity klarievogo a catfish gives economic benefit, for the account of reduction of expenses of a forage, high vyzhiyovaemosti and augmentations of growth rate of fishes, at a rate of 4280 rbl. on 1 ton ryboproduktsii.

OFFERS to EFFECTING klarievogo are recommended to be applied a catfish To brooding reception

Method of artificial reproduction with a two-single injection atsetoniro - a bathing pituitary body to females and males: preliminary in number of 0,3 mg of a pituitary body on 1 kg of mass of fish and resolving - 2 mg on 1 kg of mass of fish.

At cultivation commodity klarievogo a catfish in UZV follows ispolzoyovat to density of alighting 220-260 sht/m3, to apply astagtichnyj temperaturyonyj a mode approached to natural conditions, with daily allowances kolebayonijami temperatures: rise in temperature of water to 30°С in the afternoon

And decrease to 24 °s in the night.

Considering biological features of catfishes it is necessary to grow up them in the fish-breeding capacities which design features of nanoseconds allow fishes to leave them, capacities with fish are necessary for shading.

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A source: Kovalyov Konstantin Viktorovich. Technological aspects of growing catfish (Clarias gariepinus) in a hatchery with closed-loop water supply (UZV). Thesis for the degree of candidate of agricultural sciences. Moscow - 2006.

More on topic conclusions:

  1. CONCLUSIONS ON CHAPTER 1
  2. Conclusions
  3. Conclusions
  4. Conclusions
  5. conclusions
  6. Conclusions
  7. Conclusions
  8. conclusions
  9. CONCLUSIONS
  10. conclusions
  11. Conclusions
  12. conclusions
  13. Conclusions
  14. Conclusions
  15. conclusions