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Carp and pond fish culture : including Chinese herbivorous - download pdf or read online

By Laszlo Horvath;Gizella Tamas;Chris Seagrave

Through the 10 years considering that booklet of the 1st variation of this well-recieved publication, the carp and pond fish farming has persevered to develop progressively. totally revised and up to date, this accomplished re-creation presents an in depth and sensible advisor to the rules and practices of farming cyprinid fish, utilizing conventional and sleek pond tradition techniques.Although concentrating totally on carp tradition, this is often considered as a version for the construction of many species in ponds; the main primary approach to generating fish in the course of the global. particular details is usually incorporated for different species, comparable to Pike, Wels Catfish and Goldfish and now African Catfish and Sterlet. The authors, who among them have a long time' event farming fish in addition to studying and instructing the themes lined within the e-book, have produced a most precious and well timed moment version. The ebook can be of serious curiosity to fish farmers, researchers, lecturers and scholars within the zone of aquaculture and comparable matters, to all these concerned in particular within the carp farming and within the aquaculture of different pond-cultured species. Copies of the ebook might be on hand as a reference resource in libraries in educational and examine institutions the place aquaculture is studied an taught, and for useful reference on fish farms

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Read Online or Download Carp and pond fish culture : including Chinese herbivorous species, pike, tench, zander, wels catfish, goldfish African catfish and sterlet PDF

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Extra resources for Carp and pond fish culture : including Chinese herbivorous species, pike, tench, zander, wels catfish, goldfish African catfish and sterlet

Sample text

As stress at this stage will affect the time the eggs take to develop. Using synthetic hormones As an alternative to the hypophysation technique using pituitary extract, `synthetic' hormones can now be successfully used. The basis of this method (known as the Lin-Pe method after its inventors) is that the synthetic hormone stimulates the fish to release its own sex hormones which control reproduction. The artificial hormone is known as gonadotrophin releasing hormone (GnRH) and it is manufactured artificially in laboratories to work on a range of fish species.

8 Fry resulting from unwanted spawning would be harmful in broodstock ponds. 5±1 ha) where there is less disturbance from the large constant throughflow of fresh water and a natural food supply in the early spring. In the spring the appetite of the selected broodstock increases as the water temperature rises. Although conditions in the small crowded wintering ponds are not ideal, many years of experience have shown that the carp can be well prepared for propagation in them. This is because the eggs were developed during the previous growing season.

15 The female papillae are sewn tightly closed using two simple stitches. 5 mg/kg body weight. e. 1±2 ml of hormone solution (adding 10 per cent again for loss) for a 5±6 kg fish. The Technology of Seed Production 41 Males are treated once with 2 mg pituitary per kg body weight. The damaged (less valuable) glands are used for males. ) as stress at this stage will affect the time the eggs take to develop. Using synthetic hormones As an alternative to the hypophysation technique using pituitary extract, `synthetic' hormones can now be successfully used.

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