Nutrient intake and blood profile of Nellore calves supplemented with cellulolytic fungi from rumen

Autor: Eduardo Robson Duarte, Brenda Marques de Paula, Thiago Alves Xavier dos Santos, Luís Miguel Gonçalves Fernandes, Valdo Soares Martins Júnior, Ramon Stefano Souza Silva, Fernanda de Oliveira Vincenzi, Luis Felipe Gonçalves, Bruna Freitas Souza, Luciana Castro Geraseev, Neide Judith Faria de Oliveira, Amália Saturnino Chaves
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Journal of Applied Animal Research, Vol 51, Iss 1, Pp 524-529 (2023)
Druh dokumentu: article
ISSN: 09712119
0974-1844
0971-2119
DOI: 10.1080/09712119.2023.2232000
Popis: This study evaluates the effects of cellulolytic fungi from rumen on the nutrient intake and blood profile of Nellore calves. A diet was formulated with 56.79% lignified hay of Urochloa brizantha and 43.21% of concentrate. Sixteen Nellore calves were evaluated in completely randomized blocks using two calf groups: four males and four females. The first group was supplemented with a culture medium containing a mixture of Aspergillus terreus (VN 15 isolate) and Trichoderma longibrachiatum (VN 20 isolate). The second group received the sterile culture medium only. Ether extract ingestion was higher in the control calves; however, the supplemented calves showed a tendency to improve feed efficiency. No significant differences were detected in the blood profiles or serum biochemistry between the calf groups. Further research analyzing different dosages, adjusting the diet protein levels, and increasing the proportion of roughage could better elucidate the interference of these fungi on the performance and blood parameters of weaned Nellore calves.HighlightsNelore calves supplemented with cellulolytic fungi showed tendency of improved feed efficiencyNon-supplemented calves improved ether extract ingestion.The control group did not present differences for blood and serum biochemistry profile.
Databáze: Directory of Open Access Journals
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