Purbowati, Endang (2021) Correlation between chewing time (eating and ruminating) and rumen pH change on lambs. FPP UNDIP.

Text Ari Prima dkk (Hal. 133-135), Proceeding-of-SAADC-2017 Batu-Malang.pdf Download (1MB)

Abstract

This study aims to examine the relationship between length of eating and ruminating time to changes of rumen pH, and length of ruminating time with the intake of crude fiber. The materials were used 30 lambs aged 3-4 months old with body weight 13.75 ± 2.46 (CV 17.90%). Fed with a complete feed form of pellet contained 14-18% of crude protein and 70- 75% of total digestible nutrients. The length of eating and ruminating time was observed through direct observation of lambs every 5 minutes for 2 x 24 hours. Intake of rumen fluid was done at 0 hours (before eating) then 3 hours (after eating). The data were analyzed using correlation and regression analysis. The correlation of rumen pH change 3 h after feeding has strongly negative correlation (r = 0.81) with ruminating at moderate negative (r = 0.59) eating time, and has strongly negative correlation (r = 0.60) with total chewing (eat and rumination).
The relationship between the intake of crude fiber with ruminating time was strongly positive (r = 0.80). The ruminating time was very influential on the change of rumen pH. In order to maintain the rumen pH to be neutral pH then the time range required was 405-460 minutes. It can be achieved if the lambs consume crude fiber feed as much as 280-300 g.
Keywords: eating and ruminating behaviour, chewing time, lambs

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