Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/41143
Title: Effects of neutral detergent fiber concentration of sugarcane-based diets on the performance of Holstein heifers
Other Titles: Efeito do nível dietético de FDN de cana-de-açúcar sobre o desempenho de novilhas Holandesas
Keywords: Cana-de-açúcar - Fibra detergente neutro
Bovinos - Crescimento
Bovinos - Nutrição
Bovinos - Digestibilidade
Sugarcane - FDN
Bovines - Growth
Bovines - Nutrition
Bovines - Digestibility
Issue Date: 2019
Publisher: Universidade Estadual de Londrina
Citation: GALLO, P. C. da S. et al. Effects of neutral detergent fiber concentration of sugarcane-based diets on the performance of Holstein heifers. Semina: Ciências Agrárias, Londrina, v. 40, n. 2, p. 947-956, mar./abr. 2019.
Abstract: This study aimed to evaluate the effects of increasing the neutral detergent fibers (NDF) concentration of sugarcane-based diets on the growth and development of Holstein heifers. Twenty-seven Holstein heifers with a mean body weight of 265.5 ± 36.4 kg were housed in a sand bedded tie stall and fed individually. The experimental diet consisted of fresh sugarcane and concentrate. Three concentrations of sugarcane NDF were compared: 33% (SC33), 38% (SC38), and 42% (SC42). Crude protein content of experimental diets was 16%. The following parameters were evaluated: dry matter intake, weight gain and morphometric measures, digestibility, feeding behavior, and ruminal pH. The experimental design was a randomized block and all analyses were performed using the MIXED procedure in SAS. Intake of DM decreased as NDF concentration increased (p=0.07), but weight gain and growth were not significantly affected (p=0.74). As dietary NDF increased, chewing activity per unit DM intake increased (p=0.001), but rumen pH was not significantly affected (p=0.91). Diets formulated with 330?420 g of sugarcane NDF/kg of dry matter were sufficient to support the growth of Holstein heifers.
URI: http://repositorio.ufla.br/jspui/handle/1/41143
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