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Deteermine the stages of sexual of the goldfish (carassius auratus) and indexs sexsual puberty
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Rana Haghparast *   , Babak Tizkar |
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Abstract: (2572 Views) |
| This research was conducted to investigate the production process of goldfish and sexual maturity of oocytes at the time handling of breed. In the mosquito breeding complex, Dr. Yusefpour was take. For this purpose, 250 nambber female mature with middhe weiths 23.74g . Monthly, 50 female breed from tank selected randomly and after weighingand measure the length, gonad and liver weith, liver and gonadotropic index were determined. Each month, three ovarian tissue samples were prepared and, after the dehydration and clarification stages, the coloring was crried out on samples. Of each sample ovary was prepared the three areas, front, center and behind. The resulths showed that in the early months of sexual (December), a percentage of oocytes stage One and Two in compared to the oocytes of Three and Four than (April). In all months in each Three area front, center and behind oocytes were seen in stages three and four. The frequency of oocytes in stagevfour increased with increasing of sexually stage (April), increased in the ovary front. |
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| Keywords: ", sexual", ", ovary", ", goldfish", ", reproduction" |
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Full-Text [PDF 546 kb]
(819 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2018/05/24 | Accepted: 2018/10/7 | Published: 2018/10/7
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