The effect of fertility level and extender on the reproductive characteristics in the Iranian indigenous and Arian roosters

Kamali Sangani, Afrooz; Masoudi, Ali Akbar; Vaez-Torshizi, Rasoul; Sharifi Nia, Morteza; Eyvazi, Alireza; Farahi, Majid; Rajabi Marand, Behzad

doi:10.22059/jap.2016.56712

Document Type : Research Paper

Authors

¹ Ph.D. Student, Department of Animal Science, Faculty of Agricultural, Tarbiat Modares University, Tehran - Iran

² Assistant Professor, Department of Animal Science, Faculty of Agricultural, Tarbiat Modares University, Tehran – Iran

³ Associate Professor, Department of Animal Science, Faculty of Agricultural, Tarbiat Modares University, Tehran - Iran

⁴ M.Sc. Student, Department of Animal Science, Faculty of Agricultural, Tarbiat Modares University, Tehran - Iran

https://doi.org/10.22059/jap.2016.56712

Abstract

This study was conducted to rank the broiler farms based on buildings, installations and equipment and its effect on production factors. To determine the contribution of each factor in ranking of farms, a multi-criteriadecision analysis (SAW) was used. Data of 108 broilers were recorded in specific forms and the amount of investment per broiler was calculated for individual factors. To calculate the adjusted weights of parameters, 20 experts were consulted as was specified in forms. The results showed that ventilation (fans and air inlets), roof and wall insulation in a poultry houses have represented about 55 percent of technological factors. The breeding units holding rank 1 and 2 enjoyed high degree of mechanization. As the level of mechanization was improved, the density of chickens per unit area was also increased; These units used more tunnel ventilation and large fans, and their ceiling were insulated using fiberglass, polystyrene, corrugated plastic and thickness of walls were also 35 cm. Mostly external heaters have been installed. Feeding and drinker systems have exerted no important effect on production. Slaughter weight and survival percent were not affected by the degree of mechanization but feed intake and feed conversion ratio decreased and production index increased (p<0.01) in the breeding units holding rank 1 and 2. In general in poultry house, ventilation system and ceiling and wall insulation improved energy efficiency and increased the efficiency of the system.

Keywords

20.1001.1.20096776.1395.18.3.17.0

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Animal Production

The effect of fertility level and extender on the reproductive characteristics in the Iranian indigenous and Arian roosters

References

References

Volume 18, Issue 3
October 2016
Pages 583-591

The effect of fertility level and extender on the reproductive characteristics in the Iranian indigenous and Arian roosters

References

References

Volume 18, Issue 3October 2016Pages 583-591

Volume 18, Issue 3
October 2016
Pages 583-591