RMCP Vol. 11, Num. 1 (2020): January-March [english version]

Page 156

Rev Mex Cienc Pecu 2020;11(1):132-152

Figure 1: Disappearance of dry matter (DM) (figure A) and neutral detergent fiber (NDF) (figure B) of hay (expressed as a fraction of 0-1) in the rumen of sheep

A a

Hours 16, 24, 48 and 72: HAYa, CONTb, MONb, SALIb, FLAVb (P ≤ 0.05). Potential deg. HAY: 48 h (P ≤ 0.05). Potential deg. CONT, MON, SALI and FLAV: 72 h (P ≤ 0.05).

1

B

Hours 16, 24, 48 and 72: HAYa, CONTb, MONb, SALIb, FLAVb (P ≤ 0.05). Potential deg. HAY: 48 h (P ≤ 0.05). Potential deg. CONT, MON, SALI and FLAV: 72 h (P ≤ 0.05).

2 3 HAY (hay only), CONT (hay + concentrate), MON (hay + concentrate + monensin), SALI (hay + concentrate + salinomycin), FLAV (hay + concentrate + flavomycin). Vertical bars represent the standard deviation; Potential deg: represents the incubation time of hay needed to achieve potential degradation.

For the ruminal variables of hay DM degradation, the inclusion of concentrate in the diet reduced (P≤0.05) the fraction "b" and the ED calculated at 0.02 and 0.05 h-1 and did not change (P>0.05) the "c" fraction and the ED calculated at 0.08 h-1 (Table 4). The inclusion of concentrate reduced (P≤0.05) fraction “c” and the calculated ED (at 0.02, 0.05, and

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