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Rabbit breeding, although being a small sector of animal husbandry, is widespread in many areas of the world, as the rabbit is intended both for food (meat) and not food (fur) purposes. The rabbit production chain has to face various problems, mainly concerning animal health and product quality. To overcome these issues, studies using a multidisciplinary approach addressing aspects of the rabbit nutrition and feeding, with a direct impact on the rabbit farming, welfare, health, and meat quality are particularly appreciated and requested by the scientific community. This book is composed of four original papers and one review focused on different nutritional approaches. In particular a phyto-additive (thyme essential oil) and a rabbit-derived bacteriocin-producing strain (Enterococcus faecium CCM7420) with probiotic properties were investigated as new feed additives, while two types of insect fats were studied, in order to understand their effects as dietary replacements for soybean oil and their in vitro antimicrobial activities as alternative raw materials. Results collected in this book will be of particular interest for farmers and animal nutritionists working in the rabbit breeding sector

digestibility --- enzyme activity --- gut histology --- milk replacer --- rabbit --- Enterococcus faecium --- enterocin --- microbiota --- intestinal morphology --- phagocytic activity --- serum biochemistry --- meat quality --- weight gain --- thymol --- bioavailability --- antioxidant --- insect fat --- Hermetia illucens --- Tenebrio molitor --- gut microbiota --- antimicrobial effect --- rabbit feeding --- insoluble fibre --- soluble fibre --- feed efficiency --- whole body and carcass chemical composition --- energy nitrogen and mineral balance --- fibre digestibility --- mucosa morphology --- energy nitrogen and mineral retention efficiency

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This Brief discusses potential alternative sources for feeds in aquaculture fish diet, and explains that the future of aquaculture’s development is dependent on the costs of fishmeal and fish oil. Considering that the increasing costs of traditional feeds constrain this development, research is looking into alternatives, which can ensure adequate nutrition for animals’ growth. This work reviews the use of alternative plant, microbial and insect protein sources, evaluating in particular their impact on growth, nutrient digestibility, fillet quality traits and sensorial perception in the most important farmed marine and freshwater fish species. The Brief specifically summarizes the pros and cons of plant oils from oilseeds, which can on the one hand be a sustainable substitute for fish oil, but which are on the other hand less rich in omega-3 long-chain polyunsaturated fatty acids. The feeding might therefore result in an undesired reduced nutritional value of the flesh of farmed fish. The authors also explore the possible use of fishery discards as potential aquaculture feed source. Since the landing of by-catch will with the new Common Fisheries Policy (CFP) become obligatory (instead of simply returning it to the sea, often dead), suitable uses of what must not be used for human consumption can be investigated. The authors give an outlook whether this might become a sensible alternative to improve the management of discards and create more sustainable fisheries. The Brief also addresses the issues of additives to aquafeeds, such as vitamins, minerals, and antioxidants, but also immunostimulants and enzymes. The authors discuss which effects these additives may have on fish growth, welfare, reproduction and health status in aquacultures.

Aquaculture. --- Fishes --- Marine animals --- Feeding and feeds. --- Chemistry. --- Food --- Nutrition. --- Wildlife. --- Fish. --- Food Science. --- Fish & Wildlife Biology & Management. --- Biotechnology. --- Marine fauna --- Ocean animals --- Sea animals --- Aquatic animals --- Marine organisms --- Aquiculture --- Agriculture --- Food science. --- Wildlife management. --- Science --- Animal populations --- Game management --- Management, Game --- Management, Wildlife --- Plant populations --- Wildlife resources --- Natural resources --- Wildlife conservation --- Alimentation --- Nutrition --- Health --- Physiology --- Diet --- Dietetics --- Digestion --- Food habits --- Malnutrition --- Management --- Health aspects --- Nutrition   . --- Food—Biotechnology. --- Fish --- Pisces --- Vertebrates --- Fisheries --- Fishing --- Ichthyology