Banca de DEFESA: VICTORIA DE LIMA MARTINS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VICTORIA DE LIMA MARTINS
DATE: 16/02/2022
TIME: 08:30
LOCAL: Ambiente Virtual - Google Meet
TITLE:

CONSERVATION OF PALM OIL TRIDECANTER

KEY WORDS:

drying, absorbent additive, palm oil residue, linoleic acid, methane gas

PAGES: 74
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUBÁREA: Nutrição e Alimentação Animal
SPECIALTY: Conservação de Alimentos para Animais
SUMMARY:

Oil Palm Decanter Cake can be an alternative in ruminant feed, however, its shelf life is short due to its high moisture content. In this way, the objective was to study the chemical composition of the solid and two conservation methods, by the dehydration and silage method. The two conservation methods were carried out in a completely randomized design, with five dehydration protocols (lyophilization, natural drying, 55ºC, 80ºC and 120ºC), silage with four cornmeal concentrations (0%, 10%, 20% and 30 %, based on natural matter) and a pile exposed to the environment, both conservation methods were with four replications. The dehydration protocols did not influence the chemical composition (p<0.05), with the exception of dry matter which was higher in the dehydration at 120ºC, lyophilization reduced neutral detergent fiber, acid detergent fiber, insoluble nitrogen in neutral detergent and increased non-fibrous carbohydrate, there were no changes in the fatty acid profile, in vitro digestibility there was no difference (p>0.05) and gas production by lyophilization and natural drying showed parallelism and the curves were not identical (p<0 .05). The inclusion of cornmeal in Oil Palm Decanter Cake silage showed a significant increase (p<0.05) of dry matter, organic matter and total carbohydrates, reduced crude protein, ether extract, fiber content, and non-fibrous carbohydrates, for the corrected fiber content, a lower content was observed with 31.70% of cornmeal in the mixture and higher levels of non-fibrous carbohydrates with 43.02% of cornmeal, in relation to fatty acids there was a reduction of acids palmitic fatty acids, lower portion of stearic with 20.33% cornmeal and total saturated with 27.5% cornmeal in the mixture, and significantly increased linoleic fatty acid and total unsaturated with higher portion of unsaturated with 27 .6% cornmeal (p<0.05). There was no significant effect (p>0.05) for effluent production (kg/T) and losses (%) in silage, there was a significant increase for pH and ammoniacal nitrogen, the lowest appearance of lactic acid bacteria was with 15.87% of cornmeal and greater appearance of fungi with 14.49% of cornmeal in the mixture. The maximum time in stability (h) was with 6.62% of cornmeal, the lowest maximum temperature (ºC) with 7.97% of cornmeal in the silage and the lowest amplitude with 8.40% of cornmeal, the pH of the silage during stability was significant (p<0.05) for time, increasing pH on the third day. There was a significant effect (p<0.05) for in vitro digestibility, methane production and metabolizable energy, it increased the digestibility of dry matter, organic matter and for metabolizable energy it was higher with 39.15% of cornmeal, the lowest methane production was with 22.86% cornmeal. Regarding the production of gases, there was a significant effect (p<0.05), in which the increase in the proportion of cornmeal in the mixture increased the production of gases by incubation time and the curves showed parallelism and not identical. It was found that Oil Palm Decanter Cake can be preserved in dehydrated form regardless of temperature, and also as in silage, the use of cornmeal brought increases in chemical, fermentative and digestibility composition, however it is still possible to conserve without cornmeal as a moisture sequestering additive. The conservation of Oil Palm Decanter Cake through dehydration and silage are technically viable ways to avoid disposal in the environment and provide a sustainable destination for ruminant feeding.

BANKING MEMBERS:
Presidente - 035.432.296-64 - ANDRE GUIMARAES MACIEL E SILVA - UFPA
Interno - 1974294 - ANIBAL COUTINHO DO REGO
Externo à Instituição - EDENIO DETMANN - UFV
Externo à Instituição - JOAO MARIA DO AMARAL JUNIOR - UNIFAP
Externo à Instituição - LUCIANO FERNANDES SOUSA - UFT
Externo à Instituição - STEFANO JULIANO TAVARES DE ANDRADE - UFPA