Effect of supplementation with different sources of copper, zinc and manganese on performance, carcass yield and skin resistance of broilers

• Grant number: 20/03918-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2020
• End date: July 31, 2021
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Principal Investigator: José Roberto Sartori
• Grantee: Laís Garcia Cordeiro
• Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

Inorganic sources, like sulfates and oxides, are the forms usually used for mineral supplementation in broiler diets. However, this sources have low bioavailability because they show quickly dissociation in the gastrointestinal tract, allowing the interaction between minerals and antagonists. In this way, traditionally, the mineral supplementation occurs with values above the recommended, in order to ensure compliance the requirement. Thus, it is evident the increases in the cost of feed and environmental pollution, because of the increase of excretion of these micronutrients. In addition, inorganic sources are non-renewable natural resources that have become increasingly scarce, requiring the study of new sources like possible substitutes. An alternative source are hydroxychlorides known for their strong bonding force between minerals, sufficient to prevent antagonistic interactions in the gastrointestinal tract and weak enough to allow their absorption by organisms, increasing the stability of the components of the feed and the mineral bioavailability of the same. Therefore, this research aims to analyze the supplementation of hydroxychloride sources of copper, zinc and manganese, in relation to their sources in the sulfate form, in broilers diet and their effects on performance characteristics, carcass yield and skin resistance. 2160 one-day-old male chicks will be housed and distributed in a completely randomized design (CRD) with 8 treatments and 9 replicates, amounting 72 parts with 30 broilers each. The treatments will be: T1: 15 ppm Cu sulfate, 80 ppm Mn sulfate, 80 ppm Zn sulfate and AGP (avilamycin); T2: 15 ppm Cu sulfate, 80 ppm Mn sulfate and 80 ppm Zn sulfate; T3: 125 ppm Cu sulfate, 80 ppm Mn sulfate and 80 ppm Zn sulfate; T4: 15 ppm Cu hydroxychloride, 40 ppm Mn hydroxychloride and 40 ppm of Zn hydroxychloride; T5: 15 ppm Cu hydroxychloride, 80 ppm Mn hydroxychloride and 80 ppm Zn hydroxychloride; T6: 125 ppm Cu hydroxychloride, 40 ppm Mn hydroxychloride and 40 ppm Zn hydroxychloride; T7: 125 ppm Cu hydroxychloride, 80 ppm Mn hydroxychloride and 80 ppm Zn hydroxychloride; T8: 250 ppm Cu hydroxychloride, 40 ppm Mn hydroxychloride and 40 ppm Zn hydroxychloride. Subsequently, performance, carcass yield and skin resistance of broilers will be evaluated. (AU)