1- Dept. Animal and Poultry Nutrition, Gorgan University of Agricultural Sciences and Natural Resoureces
Abstract: (100 Views)
Introduction and Objective: Milk contains relatively small amounts of iron, calves are prone to iron deficiency. In most dairy farms, iron supplements are added as an inorganic source to the diet, which can undergo oxidation and react with other substances, causing a decrease in solubility. In order to solve this problem, the desired elements should be added to the ration of livestock in the form of chelated supplements. So, this research was conducted to investigate the effect of chelated iron supplement containing organic acid and amino acid on performance, nutrient digestibility, feeding behaviors and blood parameters in suckling calves.
Materials and Methods: 36 newborn male calves (with an average weight of 35.1±2.7 kg) were randomly divided into 3 groups with 12 replications. Experimental treatments include: 1) control group (without iron supplementation), 2) 50 mg of chelated iron based on organic acids per calf per day and 3) feeding with 50 mg of chelated iron based on amino acids per calf per day. The length of the trial period was 63 days. Calves were weighed every 21 days. The amount of feed consumed and post-feed was recorded daily. For samples related to digestibility, firstly, feed, waste and feces samples collected from each animal on day 58 to 63 were collected for five days. To measure blood metabolites, a blood sample was taken from the vein of calves on the 60th day. Finally, during the 61st to 63rd days of the experimental period, nutritional behaviors were measured for a duration of 48 hours.
Results: The results showed that, calves receiving chelated iron supplements containing amino acid showed increase in final weight (P=0.0496), total period weight (P=0.0198), daily weight (P=0.0212) and a decrease in feed conversion ratio (P=0.0413) compared to the control group and the treatment receiving chelated iron supplements containing organic acid. Also, there was no significant difference in terms of dry matter and milk consumption among different treatments. Nutrient digestibility and feeding behaviors were not affected by experimental treatments. Consumption of iron supplements by calves in both chelated forms containing organic acids and amino acids increases the amount of iron (P=0.0379), ferritin (P=0.0011), unsaturated iron binding capacity (P=0.0428), transferrin (P=0.0331), red blood cell (P=0.0333), hemoglobin (P=0.0290) and hematocrit (P=0.0001) were blood. Also, receiving chelated iron supplements decreased total antioxidant index (P=0.0001) and total iron binding capacity (P=0.0001) compared to the control group.
Conclusion: In general, according to the results of this research, it is recommended to receive chelated iron containing amino acid due to the improvement in the performance of suckling calves.
Materials and Methods: 36 newborn male calves (with an average weight of 35.1±2.7 kg) were randomly divided into 3 groups with 12 replications. Experimental treatments include: 1) control group (without iron supplementation), 2) 50 mg of chelated iron based on organic acids per calf per day and 3) feeding with 50 mg of chelated iron based on amino acids per calf per day. The length of the trial period was 63 days. Calves were weighed every 21 days. The amount of feed consumed and post-feed was recorded daily. For samples related to digestibility, firstly, feed, waste and feces samples collected from each animal on day 58 to 63 were collected for five days. To measure blood metabolites, a blood sample was taken from the vein of calves on the 60th day. Finally, during the 61st to 63rd days of the experimental period, nutritional behaviors were measured for a duration of 48 hours.
Results: The results showed that, calves receiving chelated iron supplements containing amino acid showed increase in final weight (P=0.0496), total period weight (P=0.0198), daily weight (P=0.0212) and a decrease in feed conversion ratio (P=0.0413) compared to the control group and the treatment receiving chelated iron supplements containing organic acid. Also, there was no significant difference in terms of dry matter and milk consumption among different treatments. Nutrient digestibility and feeding behaviors were not affected by experimental treatments. Consumption of iron supplements by calves in both chelated forms containing organic acids and amino acids increases the amount of iron (P=0.0379), ferritin (P=0.0011), unsaturated iron binding capacity (P=0.0428), transferrin (P=0.0331), red blood cell (P=0.0333), hemoglobin (P=0.0290) and hematocrit (P=0.0001) were blood. Also, receiving chelated iron supplements decreased total antioxidant index (P=0.0001) and total iron binding capacity (P=0.0001) compared to the control group.
Conclusion: In general, according to the results of this research, it is recommended to receive chelated iron containing amino acid due to the improvement in the performance of suckling calves.
Send email to the article author
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
