Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout
This study aims to determine the reproductive indices of three types of salmon fish: brown trout (Salmo trutta morfa fario Linnaeus (1758), rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and brook trout (Salvelinus fontinalis Mitchill, 1814) in aquaculture. For this purpose, 10 females and 10 mal...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv
2019-04-01
|
Series: | Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки |
Subjects: | |
Online Access: | https://nvlvet.com.ua/index.php/agriculture/article/view/3724 |
id |
doaj-543625fe733a4633bb432877e7894c41 |
---|---|
record_format |
Article |
spelling |
doaj-543625fe733a4633bb432877e7894c412020-11-25T03:13:18ZengStepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies LvivНауковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки2519-26982707-58342019-04-012190889210.32718/nvlvet-a90153724Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook troutYe. O. Barylo0Yu. V. Loboiko1B. S. Barylo2Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, UkraineStepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, UkraineStepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, UkraineThis study aims to determine the reproductive indices of three types of salmon fish: brown trout (Salmo trutta morfa fario Linnaeus (1758), rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and brook trout (Salvelinus fontinalis Mitchill, 1814) in aquaculture. For this purpose, 10 females and 10 males of each species were selected on an analogous basis and the main fishery-exteriors and reproductive characteristics were identified. The researching of relative fertility permit to establish that this indicator in brook trout females was 18.36% higher compared to rainbow trout, however, by 7.5% lower compared to the brown trout. It was found that brook trout eggs had less weight and size in comparison with other studied species. In particular, the weight and diameter of the eggs were 2.89 and 9.7% respectively lower than of rainbow trout, as well as 8.1 and 3.44% respectively lower compared to the brown trout. When studying the quantity of ejaculate, it was found that on average, brook trout males had 16.95% less of ejaculates compared to rainbow trout males, but 79.6% more than of brown trout males. When comparing the main indices of the brooders body of the studied species, it was found that the condition factor of the brook trout and rainbow trout females was quite high at 1.55–1.57, the brown trout one was 1.35, and the profile index respectively was 3.5, 3.52 and 4.0. The males' condition factor of brook trout, rainbow trout and brown trout was respectively 1.64, 1.52 and 1.35. Fishery-exteriors indicators met the requirements of brooders species and age specificity norms of the studied fish species.https://nvlvet.com.ua/index.php/agriculture/article/view/3724brook trout, rainbow trout, brown trout, exterior, fecundity, egg, sperm |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ye. O. Barylo Yu. V. Loboiko B. S. Barylo |
spellingShingle |
Ye. O. Barylo Yu. V. Loboiko B. S. Barylo Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки brook trout, rainbow trout, brown trout, exterior, fecundity, egg, sperm |
author_facet |
Ye. O. Barylo Yu. V. Loboiko B. S. Barylo |
author_sort |
Ye. O. Barylo |
title |
Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout |
title_short |
Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout |
title_full |
Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout |
title_fullStr |
Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout |
title_full_unstemmed |
Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout |
title_sort |
fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout |
publisher |
Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv |
series |
Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки |
issn |
2519-2698 2707-5834 |
publishDate |
2019-04-01 |
description |
This study aims to determine the reproductive indices of three types of salmon fish: brown trout (Salmo trutta morfa fario Linnaeus (1758), rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and brook trout (Salvelinus fontinalis Mitchill, 1814) in aquaculture. For this purpose, 10 females and 10 males of each species were selected on an analogous basis and the main fishery-exteriors and reproductive characteristics were identified. The researching of relative fertility permit to establish that this indicator in brook trout females was 18.36% higher compared to rainbow trout, however, by 7.5% lower compared to the brown trout. It was found that brook trout eggs had less weight and size in comparison with other studied species. In particular, the weight and diameter of the eggs were 2.89 and 9.7% respectively lower than of rainbow trout, as well as 8.1 and 3.44% respectively lower compared to the brown trout. When studying the quantity of ejaculate, it was found that on average, brook trout males had 16.95% less of ejaculates compared to rainbow trout males, but 79.6% more than of brown trout males. When comparing the main indices of the brooders body of the studied species, it was found that the condition factor of the brook trout and rainbow trout females was quite high at 1.55–1.57, the brown trout one was 1.35, and the profile index respectively was 3.5, 3.52 and 4.0. The males' condition factor of brook trout, rainbow trout and brown trout was respectively 1.64, 1.52 and 1.35. Fishery-exteriors indicators met the requirements of brooders species and age specificity norms of the studied fish species. |
topic |
brook trout, rainbow trout, brown trout, exterior, fecundity, egg, sperm |
url |
https://nvlvet.com.ua/index.php/agriculture/article/view/3724 |
work_keys_str_mv |
AT yeobarylo fisheryexteriorscharacteristicsofthebroodersofbrowntroutrainbowtroutandbrooktrout AT yuvloboiko fisheryexteriorscharacteristicsofthebroodersofbrowntroutrainbowtroutandbrooktrout AT bsbarylo fisheryexteriorscharacteristicsofthebroodersofbrowntroutrainbowtroutandbrooktrout |
_version_ |
1724647603873775616 |