期刊论文详细信息
Pesquisa Agropecuária Brasileira
Hematological profile of beef cattle with divergent residual feed intake, following feed deprivation
Rodrigo Da Costa Gomes2  Renata Farinelli De Siqueira2  Michael Alan Ballou1  Tiago Roberto Stella2  Paulo Roberto Leme2 
[1] ,Universidade de São Paulo Faculdade de Zootecnia e Engenharia de Alimentos Pirassununga SP ,Brazil
关键词: Bos indicus;    fasting;    feed efficiency;    leukocytes;    stress;    Bos indicus;    jejum;    eficiência alimentar;    leucócitos;    estresse;   
DOI  :  10.1590/S0100-204X2011000900019
来源: SciELO
PDF
【 摘 要 】

The objective of this work was to characterize the hematological profiles of steers and bulls, according to residual feed intake (RFI), after feed deprivation. Twenty‑month‑old Nellore steers and bulls were fed feedlot diets for 70 and 56 days, respectively. RFI was calculated as the difference between actual feed intake and expected feed intake. More and less efficient steers and bulls, according to RFI, were subjected to 24 hours of food deprivation. Blood was sampled prior to and following the withdrawal period. Hematological analyses included total and differential white blood cell count, red blood cell count and morphology, and plasma glucose concentration. Variation in RFI did not influence plasma glucose concentration or blood cell profiles. Glucose concentrations in bulls decreased from 114 to 97 mg dL‑1, but remained unchanged in steers, and the neutrophil:lymphocyte ratio increased from 0.39 to 0.57 following deprivation. Hematological profiles do not differ between more and less efficient steers and bulls, according to RFI.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

【 预 览 】
附件列表
Files Size Format View
RO202005130057853ZK.pdf 414KB PDF download
  文献评价指标  
  下载次数:9次 浏览次数:6次