Passion fruit by-product as a substitute for Tifton 85 hay in diets for dairy heifers

• Autor(a) principal: Figueiredo, Mércia Regina Pereira de
• Data de Publicação: 2019
• Outros Autores: Saliba, Eloisa de Oliveira Simões, Barbosa, Geraldo Sérgio Senra Carneiro, Silva, Filipe Aguiar e, Silva, Cecília Ribeiro da Mota e, Nunes, Andressa Nathalie, Moreira, Guilherme Rocha, Martins, Tássia Ludmila Teles
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34697
• topic: Feeding behavior; Intake; Digestibility; Passion fruit.; Comportamento ingestivo; Consumo; Digestibilidade; Passion fruit.

This study was undertaken to examine the intake, nutrient digestibility, protein and energy balance and feeding behavior of dairy heifers fed diets in which Tifton 85 bermuda grass (Cynodon sp) hay was substituted by a passion fruit (Passiflora edulis) by-product. Sixteen Holstein × Zebu crossbred heifers with an average weight of 363.00 ± 27.7 kg were assigned to four treatments represented by diets in which levels of a passion fruit by-product (0, 12, 24 and 36%; dry matter basis) were added as a substitute for Tifton 85 bermuda grass. The intakes of crude protein and ether extract (P > 0.05) rose as the by-product was added to the diets. Nitrogen intake, absorbed nitrogen and urinary nitrogen also increased with the inclusion of the by-product. Passion fruit by-product can be included in diets for dairy heifers up to the level of 36%.