Abstract
In total, 216 Hy-Line brown laying hens (40-week-old), were used in a 5-week experiment to evaluate the effects of ionized or chelated water-soluble mineral mixture supplementation on live performance, nutrient digestibility, blood characteristics, egg quality, and excreta microbiota. Layers were randomly assigned to one of three dietary treatments with 12 replicates of six adjacent cages each. The dietary treatments consisted of: 1) CON (basal diet + normal tap water), 2) T1 (CON+0.5% ionized mineral mixture in tap water, pH 3.0); and 3) T2 (CON+ 0.5% chelated mineral mixture in tap water, pH 3.0). Egg production tended to increase in week 1, week 3 and week 4 in the birds supplemented with T1 and T2 diet compared with CON. Moreover, the dietary supplementation of water-soluble mineral mixture improved (p=0.02) eggshell thickness in week 4 and tended to improve in week 5 of the experimental period in T2 hens compared with CON. The layers fed the T1 diet presented higher (p<0.05) Ca digestibility than CON hens, while the T2 diet promoted a numerical increase in Ca digestibility. Blood calcium concentration increased (p<0.05) with T1 and T2 treatments compared with CON. The laying hens fed the T1 and T2 diets tended to present lower Salmonella and E. coli counts isolated from excreta compared with CON. In conclusion, ionized and chelated mineral mixtures had a positive impact on production performance and eggshell quality, improved Ca digestibility and blood Ca level.
Highlights
The knowledge of the factors that affect the performance and quality of the eggshells produced by commercial layers is crucial for the production of high quality eggs
Egg production tended to increase in week 1, week 3 and week 4 in the birds supplemented with T1 and T2 diet compared with CON
The laying hens fed the T1 and T2 diets tended to present lower Salmonella and E. coli counts isolated from excreta compared with CON
Summary
The knowledge of the factors that affect the performance and quality of the eggshells produced by commercial layers is crucial for the production of high quality eggs. Effects of Supplementation of Ionized or Chelated Water-Soluble Mineral Mixture on the Live Performance, Nutrient Digestibility, Blood Profile, Egg Quality, and Excreta Microbiota of Laying Hens antagonists because the minerals are bound to organic ligands through covalent bonds, which improves their bioavailability (Ward et al, 1996). We hypothesized that ionized or chelated water-soluble mineral complex, a novel product obtained by mixing ionized minerals with organic acids and a natural extract produced from some plants, such as wild grapes and prickly pear, through Bacillus fermentation could improve the bioavailability of minerals to poultry and improve the production performance of layers. The objective of the present experiment was to determine the effects of ionized or chelated water-soluble mineral mixture on the performance, nutrient digestibility, blood profile, and isolation and enumeration of Salmonella and E. coli. The objective of the present experiment was to determine the effects of ionized or chelated water-soluble mineral mixture on the performance, nutrient digestibility, blood profile, and isolation and enumeration of Salmonella and E. coli. in the excreta of layers
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