Abstract

CABRERA-NUNEZ, Amalia et al. Orange by-products use (Citrus sinensis var.valencia) in ruminants feed. Abanico vet [online]. 2020, vol.10, e6.  Epub June 30, 2020. ISSN 2448-6132.  https://doi.org/10.21929/abavet2020.6.

This study was aimed to elaborate a young bull fattening supplement with Valencia orange by-products (Citrus sinensis var. valencia) in the north of Veracruz state. It was performed in a Livestock Production Unit (UPP) from the Municipality of Álamo-Temapache, Veracruz. Geographically located at North latitude: 20° 55' 19", West latitude 97° 41' 44. This place is found at 40 meters height above sea level with an average annual temperature of 19-36 ° C. 40 Zebu x Swiss bulls, with 300 kg weight approximately, were housed and assigned under a completely randomized design in four treatments, and ten repetitions (n = 10). T1 (control) fresh forage; T2: formulated concentrate based on orange bagasse + fresh forage; T3: concentrate formulated with orange peel + fresh forage; T4: concentrate formulated with orange silage + fresh forage. Food was offered twice a day "ad libitum" considering 3.0 % (NRC) of the live weight during the 90 days of the experiment, with two weightings at the beginning and at the end. The average daily gain (P<0.05) was 2.97 kg/animal and the cold carcass yield was 55.3%, to the animals that received a by-product supplementation based on orange silo (T4) 13.3% PC it promoted higher performance in fattening cattle.

Keywords : orange valence; by-products; yield; cattle; silo.

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