Effects of Feeding Methionine Hydroxyl Analogue Chelated Zinc, Copper, and Manganese on Growth Performance, Nutrient Digestibility, Mineral Excretion and Welfare Conditions of Broiler Chickens: Part 1: Performance Aspects.

This floor pen study explored the effects of feeding mineral methionine hydroxyl analogue chelates (MMHACs) zinc (Zn), copper (Cu), and manganese (Mn) on growth performance, carcass processing weight and quality, nutrient digestibility, gizzard erosion score, and bone parameters of broilers. One-day-old Ross 308 male chicks ( = 384) were randomly allocated to four dietary treatments with eight replicate pens per treatment and 12 birds per pen. The treatments were as follows: (1) inorganic trace mineral ZnSO 110 ppm, CuSO 16 ppm, MnO 120 ppm (ITM); (2) MMHAC Zn 40 ppm, Cu 10 ppm, Mn 40 ppm (M10); (3) Inorganic trace mineral ZnSO 110 ppm, tribasic copper chloride 125 ppm, MnO 120 ppm (T125); (4) MMHAC Zn 40 ppm, Cu 30 ppm, Mn 40 ppm (M30).

Effects of Feeding Methionine Hydroxyl Analogue Chelated Zinc, Copper, and Manganese on Growth Performance, Nutrient Digestibility, Mineral Excretion, and Welfare Conditions of Broiler Chickens: Part 2: Sustainability and Welfare Aspects.

This study investigated the effects of the dietary supplementation of mineral methionine hydroxyl analogue chelates (MMHACs) zinc (Zn), copper (Cu), and manganese (Mn) on excreta nitrogen and mineral levels, housing conditions, and the welfare status of broilers. Three-hundred eighty-four day-old Ross 308 male chicks were randomly distributed to four dietary treatments, each consisting of eight replicate pens of twelve birds per pen. The treatments were (1) inorganic trace mineral ZnSO (110 ppm), CuSO (16 ppm), and MnO (120 ppm) (ITM); (2) MMHAC Zn (40 ppm), Cu (10 ppm), and Mn (40 ppm) (M10); (3) inorganic trace mineral ZnSO (110 ppm), tribasic copper chloride (125 ppm), and MnO (120 ppm) (T125); and (4) MMHAC Zn (40 ppm), Cu (30 ppm), and Mn (40 ppm) (M30).