Supplementation with 25-hydroxicolecalciferol increases the nutritional efficiency and carcass growth of grazing Nellore young bulls

We aimed to evaluate the effect of 25-OH Vit D3 (Hy-D, DSM, Brazil) supplementation on the performance, body measures, and carcass characteristics of growing and finishing grazing Nellore young bulls. Two experiments were conducted. In Experiment 1, 150 animals (body weight (BW) of 350 ± 23 kg) were...

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Bibliographic Details
Published in:	Animal feed science and technology Vol. 318; p. 116138
Main Authors:	Mudado, Fernanda S., Silveira, Melissa B., Fernandes, Henrique J., Perdigão, Alexandre, dos Santos, Diego M.M., da Silva, Thomas H.R., da Silva Júnior, Jarbas M., de Matos, Isabelle E., de Carvalho, Victor V., Acedo, Tiago S., da Silva, Aline G.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-12-2024
Subjects:	Monensin Protein supplement Protein-energetic supplement Vitamin D3 SFT LMA Vitamin D3 PS ADG Monensin 25-OH Vit D3 DM SBW PS+Mon BW PE CY Protein supplement PS+Mon+Vit D3 PE+Vit D3 PS+Vit D3 Protein-energetic supplement HCW
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Summary:	We aimed to evaluate the effect of 25-OH Vit D3 (Hy-D, DSM, Brazil) supplementation on the performance, body measures, and carcass characteristics of growing and finishing grazing Nellore young bulls. Two experiments were conducted. In Experiment 1, 150 animals (body weight (BW) of 350 ± 23 kg) were separated into 6 treatment groups: protein supplement (PS); protein supplement with monensin (PS+Mon); protein supplement with 25-OH Vit D3 (PS+Vit D3); protein supplement with monensin and 25-OH Vit D3 (PS+Mon+Vit D3); protein-energetic supplement (PE); protein-energetic supplement with 25-OH Vit D3 (PE+Vit D3). In Experiment 2, 240 animals with an initial BW of 390 ± 16 kg were separated into the same protein-energetic supplement treatment groups used in Experiment 1 with or without 25-OH Vit D3 (two treatments). Animals in the different treatments of Experiment 1 had similar ADG and final BW values (P > 0.05), except for those that received monensin in PS, which showed lower ADG (P < 0.05). The addition of monensin to the PS inhibited increases in the body measures (P < 0.05) except for the height at withers (P > 0.05). Animals that received PE+Vit D3 showed greater increases in rib width (P < 0.05). In Experiment 2, animals that received 25-OH Vit D3 were 8.0 kg heavier than the animals that did not receive this supplement (P < 0.05). The results show that supplementation with 25-OH Vit D3 is a promising and effective method of improving carcass weight and yield in finishing beef cattle during grazing. •Vitamin D3 plays a vital role in bone development and calcium homeostasis in mammals.•Vitamin D3 is also linked to the protein synthesis and muscle growth in beef cattle.•Supply of Vitamin D3 for grazing beef cattle increases daily gain and slaughter weight.•25-OH Vit D3 promotes heavier carcass and carcass yield in beef cattle.
ISSN:	0377-8401
DOI:	10.1016/j.anifeedsci.2024.116138