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Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages

Yıl 2012, Cilt: 12 Sayı: 2, - , 01.04.2012

Öz

In this study, the effects of the long photoperiod regime (15L:9D) on both somatic growth and husbandry parameters were investigated in growing gilthead seabream (Sparus aurata). Experiments were conducted in high density polyethylene (HDPE) floating cages which have net depths of 14 m and diameters of 20 m. They contained approximately 180,000 gilthead seabream with average weights of 78.91 ± 8.54 g and 71.39 ± 4.06 g for experimental and control groups, respectively. Additionally, artificial illumination was applied to experimental cages for 13 months, while it was not performed on the control group. At the end of the experiments, fishes of experimental groups reached to 425.19 ± 5.06 g on average (total n=362,676), while this value was estimated as 305.42 ± 25.01 g (total n=345,829) on average in control groups (P<0.05). In addition, feed conversion ratio (FCR) was calculated as 2.04 and 2.37 for experimental and control groups, respectively, however significant differences were found between these groups (P<0.05). Moreover, gonadal weight of fish in the control group was significantly higher than the experimental group. Gonadosomatic index was recorded as 0.36 % in the control group and 0.15 % in the experimental group (P<0.05).

Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages

Yıl 2012, Cilt: 12 Sayı: 2, - , 01.04.2012

Öz

In this study, the effects of the long photoperiod regime (15L:9D) on both somatic growth and husbandry parameters were investigated in growing gilthead seabream (Sparus aurata). Experiments were conducted in high density polyethylene (HDPE) floating cages which have net depths of 14 m and diameters of 20 m. They contained approximately 180,000 gilthead seabream with average weights of 78.91 ± 8.54 g and 71.39 ± 4.06 g for experimental and control groups, respectively. Additionally, artificial illumination was applied to experimental cages for 13 months, while it was not performed on the control group. At the end of the experiments, fishes of experimental groups reached to 425.19 ± 5.06 g on average (total n=362,676), while this value was estimated as 305.42 ± 25.01 g (total n=345,829) on average in control groups (P<0.05). In addition, feed conversion ratio (FCR) was calculated as 2.04 and 2.37 for experimental and control groups, respectively, however significant differences were found between these groups (P<0.05). Moreover, gonadal weight of fish in the control group was significantly higher than the experimental group. Gonadosomatic index was recorded as 0.36 % in the control group and 0.15 % in the experimental group (P<0.05).

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Ayrıntılar

Birincil Dil Türkçe
Bölüm Makaleler
Yazarlar

Hatice Vardar Bu kişi benim

Şükrü Yıldırım Bu kişi benim

Yayımlanma Tarihi 1 Nisan 2012
Yayımlandığı Sayı Yıl 2012 Cilt: 12 Sayı: 2

Kaynak Göster

APA Vardar, H., & Yıldırım, Ş. (2012). Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages. Turkish Journal of Fisheries and Aquatic Sciences, 12(2).
AMA Vardar H, Yıldırım Ş. Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages. Turkish Journal of Fisheries and Aquatic Sciences. Nisan 2012;12(2).
Chicago Vardar, Hatice, ve Şükrü Yıldırım. “Effects of Long-Term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus Aurata, L.) in the Net Cages”. Turkish Journal of Fisheries and Aquatic Sciences 12, sy. 2 (Nisan 2012).
EndNote Vardar H, Yıldırım Ş (01 Nisan 2012) Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages. Turkish Journal of Fisheries and Aquatic Sciences 12 2
IEEE H. Vardar ve Ş. Yıldırım, “Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages”, Turkish Journal of Fisheries and Aquatic Sciences, c. 12, sy. 2, 2012.
ISNAD Vardar, Hatice - Yıldırım, Şükrü. “Effects of Long-Term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus Aurata, L.) in the Net Cages”. Turkish Journal of Fisheries and Aquatic Sciences 12/2 (Nisan 2012).
JAMA Vardar H, Yıldırım Ş. Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages. Turkish Journal of Fisheries and Aquatic Sciences. 2012;12.
MLA Vardar, Hatice ve Şükrü Yıldırım. “Effects of Long-Term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus Aurata, L.) in the Net Cages”. Turkish Journal of Fisheries and Aquatic Sciences, c. 12, sy. 2, 2012.
Vancouver Vardar H, Yıldırım Ş. Effects of Long-term Extended Photoperiod on Somatic Growth and Husbandry Parameters on Cultured Gilthead Seabream (Sparus aurata, L.) in the Net Cages. Turkish Journal of Fisheries and Aquatic Sciences. 2012;12(2).