title: Effects of dietary supplementation of golden apple snail (Pomacea canaliculata) egg on survival, pigmentation and antioxidant activity of Blood parrot.
abstract: This study aims to evaluate the effects of supplementing golden apple snail (Pomacea canaliculata) eggs powder (EP) in the diet as a source of natural carotenoids on survival, pigmentation and antioxidant activity of Blood parrot. A total of 90 fish were divided into three treatment groups with three replicates per treatment. Blood parrot were fed with diets containing 0 (control), 5 % (EP 5 %), and 15 % (EP 15 %) dry powder of golden apple snail egg for 60 days, and nine fish per group were sampled at 20, 40, and 60 days. No differences in survival of the fish among treatments were found throughout the experiment. The body coloration of Blood parrot was enhanced in the skin and caudal fin with increasing content of golden apple snail egg powder in the diet. At the end of the experiment, the carotenoid content in the caudal fin and the number of scale chromatophores of the fish fed dietary with EP were higher (P < 0.05) than those of the control group. The EP 15 % treated fishes showed a significant higher (P < 0.05) in the activities of SOD after 60 days, but we could not observe significant changes (P > 0.05) in CAT activities. Results demonstrated that golden apple snail eggs can be used as a colorant to promote the pigmentation efficacy of Blood parrot.
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Song
authors.initials: S
authors.lastname: Yang
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Liu
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Liu-Lan
authors.initials: LL
authors.lastname: Zhao
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Shi-Yong
authors.initials: SY
authors.lastname: Yang
authors.affiliation: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130 Sichuan China.
authors.forename: Zong-Jun
authors.initials: ZJ
authors.lastname: Du
authors.affiliation: Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, 510642 Guangdong China.
authors.forename: Jia-En
authors.initials: JE
authors.lastname: Zhang
keywords: Antioxidant activity; Blood parrot; Carotenoid; Golden apple snail egg; Pigmentation