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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.
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891