Table 5.
Effect of animal species on short-chain fatty acids (SCFA) production evaluated during in vitro rumen fermentation.
| Variables | Animal Species (1) | SEM (2) | p-Value (3) | ||||
|---|---|---|---|---|---|---|---|
| Goats | Sheep | Buffalo | Taurine Cattle | Zebu Cattle | |||
| SCFA production (mmol/g OMD) | |||||||
| acetic acid | 3.37 c | 3.92 bc | 5.44 ab | 5.70 a | 5.06 ab | 0.41 | *** |
| propionic acid | 1.30 b | 1.45 b | 2.25 a | 2.28 a | 2.11 a | 0.14 | *** |
| iso-butyric acid | 0.09 a | 0.06 abc | 0.07 ab | 0.02 c | 0.04 bc | 0.01 | *** |
| butyric acid | 0.53 c | 0.61 bc | 0.90 a | 0.88 a | 0.82 ab | 0.07 | *** |
| iso-valeric acid | 0.10 | 0.10 | 0.10 | 0.12 | 0.10 | 0.01 | ns |
| valeric acid | 0.12 bc | 0.10c | 0.15 abc | 0.19 a | 0.17 ab | 0.02 | *** |
| total SCFA | 5.41 c | 6.21 bc | 8.89 a | 9.17 a | 8.30 ab | 0.61 | *** |
(1) breeds—goats: Saanen; sheep: Santa Inês; buffalo: Mediterranean; taurine cattle: Holstein; zebu cattle: Nelore. (2) SEM: standard error of means. (3) ns: not significant (p > 0.05); *: p ≤ 0.05; **: p ≤ 0.01; ***: p ≤ 0.001. a,b,c means followed by distinct superscripts, within rows, are different (Tukey test at p ≤ 0.05).