In vitro ruminal fermentation kinetics and energy utilization of three Mexican tree fodder species during the rainy and dry period

Abstract

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In vitro gas production of foliage from three browse tree species treated with different dose levels of exogenous fibrolytic enzymes

“…Compared with the values reported in this study, Camacho et al. () reported similar values of CP, NDF and ADF for P. dulce during wet and dry seasons in a region near to the present study site. The CP content of the three browse tree species used in our study indicated that they provide ruminal degradable N when used as supplements during the dry season in semi‐arid regions.…”

In Sacco and In Vitro Organic Matter Degradability (OMD) Of Selected Semi Arid Browse Forages

“…Also, the relatively high level of ADL in browse forages as shown in Table 1 explained in part the limited in vitro degradation and therefore the lower amount of gas produced. Similar observations were reported by Nordheim-Viken and Volden, [48,49]. McAllister et al [50] also observe that higher NDF and lignifications and/or higher ADF/NDF proportion and free-CT contents can reduce attachment of ruminal microbes to feed particles, as well as inhibit microbial growth and enzyme activity [44] or intestinal bacterial activity [46] by free-condensed tannins and hence lead to lower gas production.…”

Browse species from Ethiopia: role in methane reduction and nematode control in goats

“…On average, the effect of inoculum source on GP was more pronounced in browse species (114.8 ml/g OM), known for their phenolic/tannin composition, than for temperate feedstuffs (102.6 ml/g OM). The greater differences between cow and goat to ferment browse substrates were in line with results of Camacho et al (2010) who observed higher browse fermentation in vitro in goat inocula (128.4 ml/g DM) compared to cow inocula (104.7 ml/g DM) adapted to the same browse diet. Such peculiar characteristics may be related to the feeding habits or animal species specific adaptations.…”

“…The proportion of gas produced during the first phase (32.4 vs 28.9%) and third phase (21.3 vs 17.5%) was higher in goat inoculum compared to cows. Similarly, increased GP during the early hours of in vitro fermentation was also observed in goats compared to cow rumen inoculum (Camacho et al, 2010). Partitioning of gas production into different phases assists to understand fermentation characteristics of incubated feedstuff.…”

“…Utilization of tannin-rich forages by ruminants is enhanced in the presence of rumen microbes with the ability to tolerate tannins (McSweeney et al, 2001) and the tannin-binding activity of proline-rich proteins in the saliva (Jones et al, 2001). Previous reports have shown the superior ability of goats compared to other domestic ruminants in fermenting tannin-rich and fibrous forages in vitro (Camacho et al, 2010;Odenyo et al, 1999) and in vivo (Ferreira et al, 2016). Goats have specialized groups of microbes contributing to the capacity to utilize more fibrous-and tannin-rich diets, compared to cows and sheep (Ferreira et al, 2016).…”