Skip to main content

Table 5 Estimates of fecal output (FO, g/d) and dry matter digestibility (DMD, g/kg) using different internal markers compared with values derived from total collection (TC) (n = 6)

From: Comparison of acid-detergent lignin, alkaline-peroxide lignin, and acid-detergent insoluble ash as internal markers for predicting fecal output and digestibility by cattle offered bermudagrass hays of varying nutrient composition

Item2 Treatments1    P-value4
  L ML MH H Average SEM3 D M D × M
Fecal output  
TC 3,760 4,080 4,720 4,280 4,210a 122.0 0.01 0.01 0.50
ADL 3,370 3,470 3,740 4,040 3,660b     
APL 3,510 4,090 4,590 4,050 4,060a     
ADIA 3,710 4,290 4,660 3,810 4,170a     
Average 3,588e 3,983d 4,428c 4,045d      
Dry matter digestibility
TC 504 550 538 564 539b 11.1 0.01 0.01 0.22
ADL 547 613 635 592 597a     
APL 543 539 552 590 556b     
ADIA 507 520 543 617 547b     
Average 525e 555de 567cd 591c      
  1. 1L, low CP hay (CP = 79 g/kg DM); ML, medium low CP hay (CP = 111 g/kg DM); MH, medium high CP hay (CP = 131 g/kg DM); and H, high CP hay (CP = 164 g/kg DM).
  2. 2ADL, acid-detergent lignin; APL, alkaline-peroxide lignin; ADIA, acid-detergent insoluble ash.
  3. 3SEM, standard error of the mean.
  4. 4D, diet effect; M, marker effect; D × M, diet by marker interaction.
  5. abMeans within a column without a common superscript letter differ at P < 0.05.
  6. cdeMeans within a row without a common superscript letter differ at P < 0.05.