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Available for millions of years but discovered through the last decade:Insects as a source of nutrients and energy in animal diets

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Animal Nutrition 2022年第4期11卷 60-79页

作者： Bartosz Kieronczyk Mateusz Rawski Zuzanna Mikołajczak Natalia Homska Jan Jankowski Katarzyna Ognik Agata jozefiak Jan Mazurkiewicz damian jozefiak Department of Animal Nutrition Poznan University of Life SciencesPoznanPoland Laboratory of Inland Fisheries and Aquaculture Department of ZoologyPoznan University of Life SciencesPoznanPoland Department of Poultry Science University of Warmia and MazuryOlsztynPoland Department of Biochemistry and Toxicology Faculty of Animal Sciences and BioeconomyUniversity of Life Sciences in LublinLublinPoland Department of Preclinical Sciences and Infectious Diseases Poznan University of Life SciencesPoznanPoland

The aim of this review is to present and discuss the most recent literature about the processing of insect biomass and its impact on nutritive value,further implementation of meals and fats derived from invertebrates to livestock(poultry and swine),aquaculture(salmonids),and companion animal diets and their impact on growth performance,metabolic response,and gastrointestinal microbiota ***,the most important barriers to obtaining unified products in terms of their nutritive value are considered,i.e.,to define insects'nutrient requirements,including various technological groups and further biomass processing(slaughtering,drying,and storage).Due to the current limitation in the insect production process consisting of the lack of infrastructure,there is stress on the relatively small amount of insect products added to the animal diets as a functional feed ***,only in the case of pet nutrition may insects be considered a full replacement for commonly used environmentally harmful and allergenic ***,the least information has been published on this ***,more scientific data are needed,particularly when the pet food branch and insect-based diets are rapidly growing.

关键词： Insect protein Poultry Pig Fish Pet Nutritive value

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GLP1 and GIP are involved in the action of synbiotics in broiler chickens

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Journal of Animal Science and Biotechnology 2018年第2期9卷 451-459页

作者： Pawel Antoni Kolodziejski Maciej Sassek Daniela Chalupka Natalia Leciejewska Leszek Nogowski Pawel Mackowiak damian jozefiak Katarzyna Stadnicka Maria Siwek Marek Bednarczyk Tomasz Szwaczkowski Ewa Pruszynska-Oszmalek Department of Animal Physiology and Biochemistry Poznan University of Life Sciences Department of Animal Nutrition and Feed Management Poznan University of Life Sciences Department of Animal Biochemistry and Biotechnology UTP University of Science and Technology Department of Genetics and Animal Breeding Poznan University of Life Sciences

Background: In order to discover new strategies to replace antibiotics in the post-antibiotic era in meat-type chicken production, two new synbiotics were tested:(Lactobacillus salivarius IBB3154 plus galactooligosaccharide(Syn1) and Lactobacillus plantarum IBB3036 plus raffinose family oligosaccharides(Syn2).Methods: The synbiotics were administered via syringe, using a special automatic system, into the egg air chamber of Cobb 500 broiler chicks on the 12 thday of egg incubation(2 mg of prebiotics + 105 cfu bacteria per egg).Hatched roosters(total 2,400) were reared on an experimental farm, kept in pens(75 animals per pen), with free access to feed and water. After 42 d animals were slaughtered. Blood serum, pancreas, duodenum and duodenum content were ***: Syn2 increased trypsin activity by 2.5-fold in the pancreas and 1.5-fold in the duodenal content. In the duodenum content, Syn2 resulted in ca 30% elevation in lipase activity and 70% reduction in amylase ***1 and Syn2 strongly decreased expression of m RNA for GLP-1 and GIP in the duodenum and for GLP-1 receptors in the pancreas. Simultaneously, concentrations of the incretins significantly diminished in the blood serum(P < 0.05). The decreased expression of incretins coincides with changed activity of digestive enzymes in the pancreas and in the duodenal content. The results indicate that incretins are involved in the action of Syn1 and Syn2 or that they may even be their target. No changes were observed in key hormones regulating metabolism(insulin, glucagon, corticosterone, thyroid hormones, and leptin) or in metabolic indices(glucose,NEFA, triglycerides, cholesterol). Additionally, synbiotics did not cause significant changes in the activities of alanine and aspartate aminotransferases in broiler chickens. Simultaneously, the activity of alkaline phosphatase and gamma glutamyl transferase diminished after Syn2 and Syn1, ***: The selected synbiotics may be used as

关键词： GIP GLP-1 Incretins In ovo Synbiotics

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