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reception of reproductive products.

S gariepinus does not throw caviar a natural mean in a captivity, therefore reproduction should be invoked is artificial. For this purpose in eksperiyomente the procedure of hormonal stimulation of processes soyozrevanija calfs at sires of a carp (42а) has been used.

The mean applied by us otyolichalsja from the standard procedure that karpovogo a pituitary body in quantities of a pituitary body of 0,3 mg on 1кг masses of fish (preliminary inekyotsija) and 2 mg on 1кг masses of fish (a resolving injection) introduced suspension both to females and males. These data have been received on the basis of results previous isyosledovany.

Considering complexity of reception of mature reproductive products from males, researches on an establishment of an optimum dose and kratnoyosti pituitary injections have been carried out. In experience 3 variants (tab. 6) have been used.

Table 6.

Reception of mature reproductive products of males and their quality in zavisimoyosti from a dose of pituitary injections.

Indicators Variants
The preliminary

-0 mg/kg.

razreshajushaja -

2м g/kg

predvaritel -

naja-0,1 Mg/kg.

razreshajushaja -

2м g/kg

Preliminary -

0,3 mg/kg.

razreshajushaja -

2mg/kg.

Volume ejakuljayota, ml/kg.zh.m. No 2,4±0,1 3,0±0,2*
Activity

spermiev, a point.

4 5
OplodotvorjaeYOmost caviar, % 67,7

* The difference is authentic at R

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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.

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