Skip to main content

Advertisement

Table 3 Effects of supplementation with protein in different sites on total, ruminal, and intestinal digestibilities (g/g) in cattle fed tropical forage

From: Intake, digestibility and nitrogen utilization in cattle fed tropical forage and supplemented with protein in the rumen, abomasum, or both

  Supplementation site e   
Itemf Control R A R + A SEM P-value
  Total   
OM 0.468 0.495 0.485 0.502 0.017 0.142
CP 0.475b 0.656a 0.639a 0.664ª 0.023 <0.001
NDFap 0.531 0.519 0.523 0.532 0.019 0.898
  Ruminalg   
OM 0.300 0.324 0.277 0.284 0.031 0.265
CP −0.221b 0.123a −0.987c −0.284b 0.139 <0.001
NDFap 0.502c 0.512bc 0.549a 0.528ab 0.024 0.041
  Intestinalg   
CP 0.561d 0.607c 0.772a 0.718b 0.026 <0.001
  1. a, b, c, dwithin a row, means without a common superscript differ (P < 0.10)
  2. eControl = without supplementation; R = ruminal supplementation; A = abomasal supplementation
  3. fOM, organic matter; CP, crude protein; NDFap, neutral detergent fiber assayed with a heat-stable alpha-amylase and corrected for contaminant ash and protein
  4. gRuminal and intestinal digestibilities were calculated as the fraction of the mass that entered the digestion site