1- Islamic Azad University, Qaimshahr branch
Abstract: (29 Views)
Introduction and purpose: Waste management of hatchery institutions is considered as a serious issue for the advancement of the hatchery industry. These compounds include unfertilized and infertile eggs, dead chickens, eggshells, unhatched eggs, low grade chickens that have not been sold, and chickens of laying breeds. These wastes contain high crude protein and ether extract, low crude fiber, ash and suitable calcium. Few studies have been conducted on the use of hatchery waste in poultry nutrition. This study was conducted to evaluate the use of different levels of hatching waste in the diet on production performance, blood parameters and bone characteristics in broiler chickens.
Materials and methods: This experiment was conducted on 160 broiler chickens at the age of 50 weeks with an average weight of 3.750 ± 0.250 kg and 10 roosters with an average weight of 4.850 ± 0.275 in four treatments and four repetitions and 11 birds in each repetition. Ten pieces of mother hen along with one piece of rooster in each replication) were done in the form of a completely randomized design. The rations used in this experiment, respectively, include the control treatment (without additives) and the treatments containing hatchery waste powder (contents of dead chickens, eggshells, unhatched eggs, feather waste and unhealthy eggs) at the levels of 0, 2.5, 5 and 10% were in rations. The duration of the project was used in a 60-day period in the flock of laying hens. For a week before the start of the experiment, habituation to the ration was done. Measurement of functional traits, egg production rate, egg weight, weight of chicks were measured weekly and at the end of the test period, one bird was selected from each repetition and blood was taken from the vein under the wing, and blood parameters (calcium and phosphorus) were evaluated in the laboratory. Also, on the 42nd day of the experiment, one piece of bird was selected from each repetition and after killing, the tibia of the left leg was separated and transferred to the laboratory for analysis.
Result:
Performance results showed that there was no significant difference in egg production percentage among the treatments (P>0.05). In the first weeks, the highest weight of eggs produced and the weight of chicks for the treatment contained 5% hatching waste (P<0.05). Regarding the concentration of blood parameters (calcium and phosphorus), no significant difference was observed between different treatments (p>0.05).
Conclusion: The results showed that the use of hatchery waste can be considered as a suitable alternative for rarer and higher priced food items such as soybean meal and fish meal. These compounds increase the quality and efficiency of economic production in poultry units due to the absence of adverse effects on the growth and physiology indicators of the body.
Materials and methods: This experiment was conducted on 160 broiler chickens at the age of 50 weeks with an average weight of 3.750 ± 0.250 kg and 10 roosters with an average weight of 4.850 ± 0.275 in four treatments and four repetitions and 11 birds in each repetition. Ten pieces of mother hen along with one piece of rooster in each replication) were done in the form of a completely randomized design. The rations used in this experiment, respectively, include the control treatment (without additives) and the treatments containing hatchery waste powder (contents of dead chickens, eggshells, unhatched eggs, feather waste and unhealthy eggs) at the levels of 0, 2.5, 5 and 10% were in rations. The duration of the project was used in a 60-day period in the flock of laying hens. For a week before the start of the experiment, habituation to the ration was done. Measurement of functional traits, egg production rate, egg weight, weight of chicks were measured weekly and at the end of the test period, one bird was selected from each repetition and blood was taken from the vein under the wing, and blood parameters (calcium and phosphorus) were evaluated in the laboratory. Also, on the 42nd day of the experiment, one piece of bird was selected from each repetition and after killing, the tibia of the left leg was separated and transferred to the laboratory for analysis.
Result:
Performance results showed that there was no significant difference in egg production percentage among the treatments (P>0.05). In the first weeks, the highest weight of eggs produced and the weight of chicks for the treatment contained 5% hatching waste (P<0.05). Regarding the concentration of blood parameters (calcium and phosphorus), no significant difference was observed between different treatments (p>0.05).
Conclusion: The results showed that the use of hatchery waste can be considered as a suitable alternative for rarer and higher priced food items such as soybean meal and fish meal. These compounds increase the quality and efficiency of economic production in poultry units due to the absence of adverse effects on the growth and physiology indicators of the body.
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