بررسي روند تغييرات مورفومتريك ماهي قزل‌آلاي رنگين كمان (Oncorhynchus mykiss) با استفاده از روش پردازش تصوير (IPM)

Evaluation of Morphometric Changes of Rainbow Trout (Oncorhynchus mykiss) Using Image Processing Method (IPM)

ﭼﮑﯿﺪه در ﻣﺤﯿﻂﻫﺎي ﭘﺮورﺷﯽ ﺑﻪﻣﻨﻈﻮر آﮔﺎﻫﯽ از ﺳﺮﻧﻮﺷﺖ ﻏﺬاﯾﯽ ﮐﻪ ﺑﻪ ﻣﺎﻫﯽﻫﺎ داده ﻣﯽﺷﻮد، ﻫﻤﭽﻨﯿﻦ ﺑﺮرﺳﯽ ﻣﯿﺰان رﺷﺪ و ﺿﺮﯾﺐ ﺗﺒﺪﯾﻞ ﻏﺬاﯾﯽ ﺑﺎﯾﺪ در ﻃﻮل دورة ﭘﺮورش ﻧﺴﺒﺖ ﺑﻪ زﯾﺴﺖﺳﻨﺠﯽ و ﮐﻨﺘﺮل رﺷﺪ ﻣﺎﻫﯽﻫﺎ اﻗﺪام ﮐﺮد. ﺑﺮاي اﯾﻦ ﻣﻨﻈﻮر اﺑﺘﺪا ﺑﻪﺻﻮرت ﺗﺼﺎدﻓﯽ 20 ﻋﺪد ﻣﺎﻫﯽ ﻗﺰلآﻻي رﻧﮕﯿﻦﮐﻤﺎن ﺑﺎ وزن ﺗﻘﺮﯾﺒﯽ 3/81± 31/42 اﻧﺘﺨﺎب ﺷﺪه و ﺑﻪ دو ﮔﺮوه A و B ﺗﻘﺴﯿﻢ ﺷﺪﻧﺪ. ﻣﺎﻫﯿﺎن ﮔﺮوه A ﺑﺎ 1/5 درﺻﺪ وزن ﺑﺪن و ﻣﺎﻫﯿﺎن ﮔﺮوه B ﺑﺎ 2/4 درﺻﺪ وزن ﺑﺪن ﺗﻐﺬﯾﻪ ﺷﺪﻧﺪ. ﻃﻮل و وزن ﻫﺮﯾﮏ از ﻣﺎﻫﯽﻫﺎ اﻧﺪازهﮔﯿﺮي ﺷﺪ. از ﻧﻤﻮﻧﻪﻫﺎ در اﺗﺎﻗﮏ ﻋﮑﺲﺑﺮداري ﻋﮑﺲ ﮔﺮﻓﺘﻪ ﺷﺪ ﺗﺎ ﻣﺤﯿﻂ، ﻣﺴﺎﺣﺖ، ارﺗﻔﺎع و ﻗﻄﺮ ﻣﻌﺎدل ﻣﺎﻫﯽﻫﺎ در دورة زﯾﺴﺖﺳﻨﺠﯽ ﻣﺤﺎﺳﺒﻪ ﮔﺮدد. ﺑﺮ اﺳﺎس ﻧﺘﺎﯾﺞ ﺣﺎﺻﻞ از ﺗﺤﻘﯿﻖ ﺣﺎﺿﺮ در ﻓﺎﺻﻠﮥ ﺑﯿﻦ دو زﯾﺴﺖﺳﻨﺠﯽ وزن ﻧﻬﺎﯾﯽ، ﻃﻮل ﻣﺘﻮﺳﻂ ﻧﻬﺎﯾﯽ و ارﺗﻔﺎع ﻧﻬﺎﯾﯽ ﺑﻪ ﺗﺮﺗﯿﺐ در ﮔﺮوه B 4/91± 39/26 ﮔﺮم، 0/7± 15/05 ﺳﺎﻧﺘﯽﻣﺘﺮ و 0/45± 3/45 ﺳﺎﻧﺘﯽﻣﺘﺮ و در ﮔﺮوه A 2/59± 36/01 ﮔﺮم، 0/62± 77/ 14 ﺳﺎﻧﺘﯽﻣﺘﺮ و 0/26± 3/06 ﺳﺎﻧﺘﯽﻣﺘﺮ اﻧﺪازهﮔﯿﺮي ﺷﺪﻧﺪ ﮐﻪ اﯾﻦ ﻣﻘﺎدﯾﺮ ﺑﺎ اﻓﺰاﯾﺶ ﻣﯿﺰان ﻏﺬادﻫﯽ ﺑﻪﻃﻮر ﻣﻌﻨﯽداري اﻓﺰاﯾﺶ ﯾﺎﻓﺖ. ﻫﻤﭽﻨﯿﻦ ﻣﺴﺎﺣﺖ ﻧﻬﺎﯾﯽ، ﻣﺤﯿﻂ ﻧﻬﺎﯾﯽ و ﻗﻄﺮ ﻧﻬﺎﯾﯽ ﺑﺎ اﻓﺰاﯾﺶ درﺻﺪ ﻏﺬادﻫﯽ ﻧﺴﺒﺖ ﺑﻪ وزن ﺑﺪن اﻓﺰاﯾﺶ ﯾﺎﻓﺖ )0/05< P(. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ﺑﺎﯾﺪ ﺑﺮ اﺳﺎس رﺷﺪ روزاﻧﻪ، ﻏﺬاي ﻣﻮردﻧﯿﺎز ﺑﺮاي ﻫﻤﮥ اﻋﻤﺎل ﺣﯿﺎﺗﯽ و ﺗﺄﻣﯿﻦ رﺷﺪ ﻣﻨﺎﺳﺐ ﻣﺎﻫﯽ در اﺧﺘﯿﺎر آن ﻗﺮار ﮔﯿﺮد. ﻧﺘﺎﯾﺞ ﻫﻤﭽﻨﯿﻦ ﻧﺸﺎن داد اﺳﺘﻔﺎده از روش ﭘﺮدازش ﺗﺼﻮﯾﺮ ﺑﻪﻣﻨﻈﻮر ﺗﻌﯿﯿﻦ ﻃﻮل ﻣﺎﻫﯽ و ﺳﺎﯾﺮ ﭘﺎراﻣﺘﺮﻫﺎي رﺷﺪي داراي دﻗﺖ ﮐﺎﻓﯽ و ﺳﺮﻋﺖﺑﺎﻻ ﺑﻮده و ازﻧﻈﺮ اﻗﺘﺼﺎدي ﻧﯿﺰ ﻣﻘﺮونﺑﻪﺻﺮﻓﻪ اﺳﺖ.

In breeding environments, in order to know the fate of the fish given to the fish, the biomass and control of fish growth should also be monitored during the breeding period to determine the growth rate and feed conversion ratio (FCR). For this purpose, 20 rainbow trout (31.42±3.81) were randomly selected. They were then divided into groups A and B. Group A fish fed 1.5% body weight and group B fish fed 2.4% body weight. The length and weight of each fish were measured. Samples were taken in the photographic chamber to calculate the environment, area, height and diameter equivalent to fish in the bioassay. Based on the results of the present study, the interval between the two biometric of final weight, final average length and final height were 39.26 ± 4.91 g, 15.05±0.7 cm and 3.45±0.45 cm respectively and in group A 36.01 ±2.59 g, 14.77±0.62 cm and 3.06±0.26 cm, respectively, which had increased with increasing percentage of feeding. Also final area, final environment and final diameter increased with increasing percentage of nutrition relative to body weight (p