Organic Zn and broiler chicken nutrition

It is believed that organically complexed trace minerals are better absorbed and utilized than their inorganic salts or oxides. However, the appropriate supplemental level of organic Zn has not been worked out. Therefore, an experiment was conducted to estimate the optimal levels of organic Zn supplementation for fast-growing broiler chickens by growth response and total tibia bone Zn content

Effect of Organically Complexed Copper, Iron, Manganese, and Zinc on Broiler Performance, Mineral Excretion, and Accumulation in Tissues

Supplementation of trace minerals with a large safety margin in broiler chickens has resulted in a high level of mineral excretion that ends up in the environment. Organically complexed trace minerals (organic minerals) may be able to replace the inorganic trace minerals, because the former appear to have a greater bioavailability. Therefore, a 29-d cage study that included diets with supplemental trace minerals from organic and inorganic sources based on a trace mineral deficient control diet was conducted to examine the possible response of broiler chickens to organic mineral supplements. The results showed that supplementation with 4 mg of Cu and 40 mg each of Fe, Mn, and Zn from organic sources may be sufficient for normal broiler growth to 29 d of age. It is possible to use these lower levels of organic trace minerals in broiler diets to avoid high levels of trace mineral excretion

Effect of organically - complexed Cu, Fe, Mn and Zn on broiler performance and excretion of minerals

Trace minerals are essential for broiler growth. Traditionally these trace minerals are supplemented in the form of inorganic salts such as sulphates, oxides and carbonates, to provide levels of minerals which prevent clinical deficiencies and/or allow the bird to reach its genetic potential for growth. However, these supplemental inorganic trace minerals result in a high level of mineral excretion. It is believed that organic chelates of minerals provide alternative pathways for absorption, thus leading to a reduction in the excretion of minerals. However, the requirements of organic trace minerals for poultry are not known and data on the difference between inorganic and organic mineral sources on mineral excretion are scarce. Most studies on organic minerals for broilers have used conventional diets, which makes it difficult to separate the effect of the supplemental minerals from that of the endogenous minerals in the ingredients. On the other hand, purified diets usually decrease feed intake of broilers and compromise the growth of the chick (Wedekind 1992)

Optimal dietary inclusion of organically complexed zinc for broiler chickens

1. The aim of the present study was to determine the optimal content of organically complexed zinc (Zn) for broiler chickens. 2. Five different Zn and manganese (Mn) dietary contents from organically complexed supplements including a control diet containing 15 mg Mn and 20 mg Zn/kg diet, were randomly fed to one-day-old Cobb broilers (each treatment had 6 replicates of 4 birds) for 35 d. Body weight and feed intake were recorded weekly. At the end of the experiment, two birds from each cage were killed and their right tibia were collected to measure bone size, strength and mineral contents. 3. Body weight gain and total tibia copper (Cu), iron (Fe), Mn and Zn contents increased linearly with supplemental Zn and Mn intake. The optimal Zn requirements for broilers at 1-14 and 14-35 d of age were 58 and 68 mg/kg diet, respectively. 4. Supplementation of Mn and Zn had no effect on tibia bone width and strength, but increased tibia length. 5. In commercial practice, organically complexed Zn may need to be supplemented during the entire period of production at a higher content than NRC recommendation but it is not necessary to exceed 70 mg/kg diet

The absorption of bioplex-trace minerals

An experiment was conducted to examine the effects of bioplex or inorganic Cu, Fe, Mn and Zn supplementation of a mineral-deficient broiler diet on bird performance on deep litter and on absorption site and digestibility. A deficiency of trace minerals severely depressed feed intake and growth rate, but did not adversely affect FCR. Supplemental organic (Bioplex) sources of trace minerals significantly (

Broiler chickens could benefit from organically-complexed copper, iron, mangenese and zinc

Trace minerals are essential for broiler growth but supplemental inorganic trace minerals usually result in a high level of mineral excretion. Organically-complexed Cu, Fe, Mn and Zn may be alternative supplements in broiler diets due to a low rate of excretion. However, the requirements of these organically-complexed trace minerals for broilers are not known. Therefore, the current experiment was conducted to examine the effect of three levels of Cu (2,4, 8 mg/kg), Fe (20, 40, 80 mg/kg), Mn (20, 40, 80 mg/kg) and Zn (20, 40, 80 mg/kg) fed as proteinates (Organic I, 2, 3) on broiler performance and tissue trace mineral contents in comparison to a negative control (low-mineral basal diet) and a positive control (supplemented with sulphates). Both inorganic and organic minerals improved (

The Digestibility of Organic Trace Minerals along the Small Intestine in Broiler Chickens

An experiment was conducted to evaluate the effects of low concentrations of organic and inorganic dietary trace minerals on broiler performance and trace mineral digestibility along the small intestine of 35-day-old broiler chickens reared under floor-pen conditions. Eight hundred male, day-old Cobb broiler chickens were randomly allocated to 4 dietary treatments (25 birds per pen with 8 replicates per treatment). Broilers fed diets supplemented with 4, 20, 40 and 30 mg/kg, respectively, of Cu, Fe, Mn and Zn from organic chelates and inorganic salts achieved the same body weight gain as those supplemented at the NRC levels (8 mg Cu, 40 mg Fe, 60 mg Mn and 40 mg Zn/kg, respectively) from inorganic salts. However, birds fed a control diet without any supplementation at dietary levels of 7.4-8.8, 60.1-69.2, 14.6-15.4 and 19.1-20.6 mg/kg of Cu, Fe, Mn and Zn, respectively, had decreased feed intake and growth rate. There was no significant difference in the digestibility of Cu in all regions of the small intestine. Throughout the small intestine the apparent absorption of Mn from both organic and inorganic sources was small, whereas the digestibility of Zn seemed to be more complex, exhibiting differences in the apparent absorption due to both mineral source and intestinal site. Therefore, the digestibility of organic Zn was improved (