The effects of different fishmeal level diets with or without phytase supplementation on growth performance, body composition, digestibility, immunological and biochemical parameters of juvenile hybrid sturgeon ( Acipenser baeri Brandt ♀ ×  A. schrenckii Brandt ♂)

Abstract

A 12‐week growth trial was conducted to evaluate the effect of low fishmeal and phytase replacing inorganic phosphorus on juvenile hybrid sturgeon (Acipenser baeri Brandt ♀ × A. schrenckii Brandt ♂). Four experimental diets were designed as FM100p, FM100, FM250p and FM250, which represented 10% and 25% fishmeal with or without phytase, respectively. The results showed that although growth parameters had no significant difference in all treatments, low fishmeal obviously decreased the culture cost of hybrid sturgeon. Lipid content of body composition was obviously increased in low fishmeal treatments (p < .05). The interaction of low fishmeal and phytase significantly enhanced apparent digestibility coefficients of crude protein (p < .05). Two‐way ANOVA analysis showed that input and output of phosphorus were significantly affected by fishmeal level, phytase and interaction of both factors (p < .05). For the immunological and hepatic function parameters, fishmeal level and phytase had significant effects on the activities of lysozyme, myeloperoxidase, malondialdehyde, alanine aminotransferase, lactate dehydrogenase and alkaline phosphatase (p < .05). The present study potentially justifies that a diet containing 10% fishmeal can be used for hybrid sturgeon. Moreover, replacement of monocalcium phosphate by phytase not only has no adverse effect on the growth of hybrid sturgeon, but also reduces phosphorus emission and protects aquaculture environment.

The Effect of Phytase Enzyme Supplementation to Hazelnut Meal Based Diets on Growth Performance and Nutrient Digestibility of Siberian sturgeon (Acipenser baerii)

“…In the present study, the inclusion of phytase enzyme in fish feed has improved the rate of utilization of hazelnut meal additive. This study is similar to those studies of Lin et al (2007), Ghomi et al (2012), Ávila et al (2015), Maas et al (2018), Chen et al (2019), andXu et al (2020) the group FM 100p in terms of WG and SGR and FM 250p in terms of FI and FCR in which the enzyme supplement had a positive effect on the growth parameters. However, the current study is different from the studies of Wang et al (2009) who have reported that SGR, FCR, and PER are not statistically different.…”

“…At the end of the study, they reported that the FCR and PER were improved and the SGR did not change to this was not statistically significant. Xu et al (2020) conducted a study on juvenile hybrid sturgeon (Acipenser baerii ♀ × Acipenser schrenckii ♂) for 12 weeks. In their study, they created four feed groups (FM 100, FM 100p, FM 250, and FM 250p), which contains 10% and 25% fishmeal and the other protein source (soybean meal, wheat flour, cottonseed protein), with the same proportions phytase supplemented or without.…”

Evaluation of Chlorogenic Acid Supplementation in Koi (Cyprinus carpio) Diet: Growth Performance, Body Color, Antioxidant Activity, Serum Biochemical Parameters, and Immune Response

“…Chemical Analyses. All experimental diets were analyzed according to their chemical compositions [30,31]. Samples were dried to a constant weight at 105 °C and then used to Besides, the total carotenoid in the scales, epidermis, and muscles of koi was, respectively, measured according to the method of Wang, Xiong, Zhang, Ren, & Zhang [33].…”

Dietary laminarin administration to enhance the immune responses, promote growing and strengthen physique in Ictalurus punctatus

“…In recently, China has banned the use of large amounts of antibiotics to reduce the infectivity of aquatic animal's disease and improve survival and growth (Xu et al, 2018; Zhang et al, 2019). Recently, the use of marine‐derived polysaccharides (MDPs) to replace antibiotics in aquatic animal feed in aquaculture animals has attracted widespread attention (Mohan et al, 2019).…”