Özet:

Hop (Humulus lupulus L.) contains significant amounts of polyphenols, crude protein, and crude ash, and highly digestible. It contributes to animal health, yield, and quality due to these due to the phenolic compounds. In addition, thanks to the phenolic compounds it contains, hops promote fermentation in silage and increase the palatability of the silage by giving it an aromatic taste. Hop is harvested between August-September. The cone of the harvested plant is used for brewing, while the rest is usually discarded. In this study, it was aimed to determine the silage yield and quality of hops. Five different age groups (3, 5, 10, 15, and 20) of two types of hops (Brewers Gold and Aroma) were examined in the study. The cone of the harvested plant is used for brewing, while the rest is usually discarded. Then, harvested plants were chopped to size 2 cm, and ensiled in 2 kg plastic jars. The samples were taken fermentation at 25±2 °C during the 45 days. In this study, silage yield, dry matter ratio, pH value, fleig score, organic acids (lactic acid, acetic, oxalic, succinic and citric acid), water soluble carbohydrates, crude protein ratio, acid detergent fiber, neutral detergent fiber, potassium, phosphorus, calcium, and magnesium contents of silages were determined. The highest silage yield was determined at 1.73 t da-1 with in the 5 age group of Aroma variety. The crude protein ratio ranged between 15.10-20.11%. The highest fleig score was determined in the age groups of 5 (96.64 and 92.27, respectively) and 20 (91.42 and 93.87, respectively) of both cultivars. The highest lactic acid content of 4.10% was determined in the 5 age group of the Brewers Gold variety. The nutritional content of the silages was sufficient in terms of animal nutrition. As a result, it has been determined that silages obtained from different varieties and ages of hops can be evaluated as silo material in terms of the investigated traits examined.

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