Evaluation of physical quality and total volatile nitrogen in diets of rainbow trout farms | ||
| علوم و فنون دامپروری | ||
| Volume 10, Issue 41, March 2022, Pages 3-12 PDF (1.28 M) | ||
| DOI: 10.22092/aasrj.2021.354052.1228 | ||
| Authors | ||
| Reza Vakili* 1; Javad Iravani2 | ||
| 1Departement of animal science,Islamic Azad University,Kashmar Branch | ||
| 2Research and Development of Makian Phosphate | ||
| Abstract | ||
| One of the stages of controlling commercial diets in the stage of raising rainbow trout (50- 900 g) is quality assessment. Physical (soil, density and diameter of feed particles) and biochemical quality (total volatile nitrogen) of some feed diets consumed in rainbow trout farms (extruded and cold pellets) in Khorasan Razavi province were examined. And compared with the recommended values. For this purpose,11 samples of extruded feed and 2 samples of cold pellet feed were sampled and transferred to the laboratory under standard conditions.In general, the results showed that the soil content of most samples was somewhat in line with existing standards, but cold pellet samples had a significant amount (P <0.05) of more soil than extruded samples. . Also, the density of cold pellet samples corresponded to the recommended values for this type of diets, but their density was higher than extruded samples. Also, the density of most extruded samples was in accordance with the recommended standards. The particle diameter of most diets, except for samples (F2, F3, K2, K3), complied with existing standards, weight class, and quantities on bags. Total volatile nitrogen of the samples (By1 and By3) was somewhat in line with existing standards, but other samples showed higher levels of total volatile nitrogen. | ||
| Keywords | ||
| Rainbow trout; Extrusion; Cold pellets; Total volatile nitrogen | ||
| References | ||
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