Effects of forage particle size, hydraulic press pressure and pressure dwell time on durability and particles abscission of complete feed blocks

Ferasati, Syros; Moeini, Mohammad; Hozhabri, Fardeen; Fazaeli,

doi:10.22059/jap.2017.223461.623149

Document Type : Research Paper

Authors

https://doi.org/10.22059/jap.2017.223461.623149

Abstract

In order to determine the effects of hydraulic press pressure in the complete feed blocks (CFBs) machinery, with the pressure dwell time and forage particle size on durability, particles abscissionand storage of blocks using a completely randomized design (12 treatments and 10 replications)with factorial arrangement current experiment was conducted. The factors were: two levels of 200 and 220 bar hydraulic pressures in CFB machinery, three levels of 5, 17 and 30 sec dwell time along with two particle sizes (alfalfa hay and wheat straw) of short (average 10 mm) and long (average 30 mm) using forage to concentrate ratio of 45:55. Complete feed blocks with long or short particles with press pressure of 220 bar and dwell time of 30 sec had higher durability andCFBs with long or short particles with press pressure of 220 bar and dwell time of 17 sec had minimum and maximum of particles abscission, respectively (P<0.05). There was a linear relationship between the durability and density of CFBs (P=0.001, r=0.74). With increasing the hydraulic pressure, the evaporation percent of moisture in the blocks containing long particles increased (P<0.05), resulted in non-proliferation of mold colonies after 35 days of storage; but corresponding parameter in the blocks containing short particles decreased and hence the number of visible mold colonies increased (P<0.05).It can be concluded that, in term of durability percentage and storage capability of CFBs, blocks manufacturing with an average 10 and 30 mm under mentioned conditions of pressure and dwell time was not suitable and it seems blocks under conditions of an average forage particle size of more than 10 and less than 30 mm, but hydraulic pressure of 220 bar and dwell time of 5 seconds could be optimum.

Keywords

20.1001.1.20096776.1396.19.3.5.5

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Animal Production

Effects of forage particle size, hydraulic press pressure and pressure dwell time on durability and particles abscission of complete feed blocks

References

References

Volume 19, Issue 3
November 2017
Pages 569-584

Effects of forage particle size, hydraulic press pressure and pressure dwell time on durability and particles abscission of complete feed blocks

References

References

Volume 19, Issue 3November 2017Pages 569-584

Volume 19, Issue 3
November 2017
Pages 569-584