Effects of different carbohydrate levels in puffed feed on digestive tract morphological function and liver tissue structure of snakeheads (Channa argus)

Abstract

The snakeheads are delicate and tender, and it is a high-quality healthcare product with comprehensive nutrition and delicious meat. The snakeheads meat contains up to 16.94% protein; the fat content is only 0.22%, and the protein composition is obviously superior to the vegetable protein, and it is rich in mineral nutrients such as calcium, phosphorus, iron and zinc which are necessary for the human body (Conceição, Dersjant-Li, & Verreth, 1998). Its nourishing medicinal value is also favoured by the majority of people (War, 2011). However, global

A High Starch Diet Alters the Composition of the Intestinal Microbiota of Largemouth Bass Micropterus salmoides, Which May Be Associated With the Development of Enteritis

“…The activities of intestinal antioxidant enzymes, the length of the intestinal villi, and the thickness of the intestinal wrinkled were significantly reduced in Oreochromis niloticus fed a high carbohydrate diet ( Xu, 2017 ). Ding et al (2020) reported that intestinal villi of snakehead ( Channa argus ) became sparse and short as the carbohydrate content of the diet was increased (13–19%), and the intestinal villi were injured and shed at 19% carbohydrate content. In the present study, the intestines of largemouth bass developed moderate to severe necrotizing enteritis with an increase in the number of goblet cells and mucus secretion accompanied by shedding of necrotic epithelial cells and infiltration by inflammatory cells.…”

High-Starch Diet Consumption Impaired Intestinal Barriers of Juvenile Largemouth Bass (Micropterus Salmoides)

“…Studies reported that dietary energy source (corn starch and lipid) and additives (brewer's yeast and sanguinarine) levels had considerable effects on intestinal microbial relative abundance in phylum level. (Arias-Jayo et al, 2018;Ding et al, 2020;Zhang et al, 2019;Zhou et al, 2018). So, we speculated that the relative abundance of intestinal microbe was considerably affected by the dietary starch level in phylum level.…”

“…As is known, starch is one of the most important energy sources of carbohydrate and binder in commercial aquafeed. A moderate amount of dietary carbohydrates could reduce production costs in sh, via increase protein deposition, growth, feed e ciency in sh, such as pompano (Trachinotus ovatus), snakehead (Channa argus) and rainbow trout (Oncorhynchus mykiss) (Castro et al, 2015;Ding et al, 2020;KROGDAHL et al, 2005). As a carnivorous sh, the largemouth bass has limited capacity to utilize starch.…”

“…The intestine is not only the main organ for digestion/absorption, but also executes physical, physiological and microbial barriers function in sh (Arias-Jayo et al, 2018;Wang et al, 2019). After long-time excess carbohydrates intaking, the intestinal mucosal structure of become impaired (Ding et al, 2020). High-starch diet decreased the antioxidant capacity and immunity of the gut, while caused intestinal in ammation in Nile tilapia (Oreochromis niloticus) and turbot (Scophthalmus maximus) (Bai et al, 2019;.…”

Effects of Dietary Multienzyme Complex Supplementation on Growth Performance, Digestive Capacity, Histomorphology, Blood Metabolites and Hepatic Glycometabolism in Snakehead (Channa argus)

“…Meanwhile, exogenous digestive enzymes can also help aquatic animals to decompose some anti-nutrients, improve the digestibility and utilization of feed, and promote animal growth [7,8]. Our previous studies have shown that snakeheads fed a combination with conventional feeds may have damaged and deficient villi due to incomplete feed absorption [9]. However, the supplementation of amylase to snakehead feed was thought to promote starch utilization and alleviate barriers to carbohydrate consumption [10].…”