Naslov
Influence of maize grain drilling on the water release rate and its nutritional value

Autori
Grubor, Mateja ; Zjalić, Slaven ; Matin, Ana ; Krička, Tajana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the 71st Annual Meeting of the European Federation of Animal Science / - : Wageningen Academic Publishers, 2020, 309-310

ISBN
978-90-8686-349-5

Skup
71st Annual Meeting of the European Federation of Animal Science

Mjesto i datum
Online, 01.12.2020. - 04.12.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
maize kernel, drilled maize kernel, convection drying, kernel fracture, nutritional value

Sažetak
The most important energy feed is maize grain, and as a consequence of a large number of hybrids, the largest variations in the chemical composition are present. Maize grain must be preserved from one harvest to another. One way of maize kernels conservation is convection drying. The major resistance to the water passage through the kernel during drying is provided by the pericarp. Based on the above, kernel drilling is introduced as a process which breaks down the structure of the pericarp and enables the faster release of water. Since different grain hybrids with different initial humidity, morphological structure and the size of the grain are dried simultaneously in the drying process, different grain behavior occurs in the drying process. The release of surplus water to the equilibrium humidity (14%) is different for each hybrid, therefore the aim of the paper is to determine the water release rate from the whole and drilled kernels of 3 different FAO maize groups 200, 300 and 400 through exponential equations. Kernel drilling was performed by laboratory „hedgehog “, in which the kernels are drilled halfway through by needles. The investigated kernels were dried in a convection dryer at a temperature of about 130 °C and an airflow rate of 2 m/s. Also, the grain fracture after drying by laboratory centrifuge, which represents the simulation of the grain fall in the silage cell, as well as the nutritional value of investigated maize hybrids after the drying process will be determined. From the results, it can be concluded that the drilled kernel dried faster than the whole kernel. Regarding the investigated hybrids, FAO group 200 released the water fastest while FAO group 400 released the water slowest. In the drilled kernel, regardless of the hybrid, a higher percentage of kernel fracture was observed. At the investigated hybrids, FAO group 200 showed more resistance to kernel fracture while kernel fracture values of FAO group 300 and 400 were similar. Hybrids had similar nutritional values, whether it is the whole or drilled kernel.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA