Ruminal Acidosis

Millen, D. D.; Pacheco, R. D. L.; Cabral, Luciano da Silva; Cursino, L. L.; Watanabe, Daniel Hideki Mariano; Rigueiro, A. L.

doi:10.1007/978-3-319-30533-2_5

Cited by 31 publications

(45 citation statements)

References 56 publications

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“…The SFAEI of RFQ was greatest at 75:25 orchardgrass to alfalfa hay and silage mixtures. Increasing the proportion of alfalfa increased the SFAEI of IVOMD, GP 48 , c, and MCP by +5.14%, +5.52%, +16.1%, +13.4%, respectively, and decreased the SFAEI of NDFD (−1.79%) when compared with the calculated value. Positive MFAEI was observed in all mixtures, and the highest MFAEI (up +40%) was observed in 50:50 of orchardgrass to alfalfa hay and silage mixtures.…”

Section: Sfaei and Mfaei Of Hay And Silage Mixturesmentioning

confidence: 78%

“…The IVDMD increased linearly (Figure 2a, p < 0.001), whereas ADFD decreased linearly (Figure 2d, p < 0.001) with increasing proportions of alfalfa in hay and silage mixtures. Positive associative effects were observed on IVOMD (Figure 2b, p < 0.001), cumulative GP 48 (Table 3, p < 0.05), and asymptotic GP (A) ( Table 3, p < 0.05); furthermore, the greatest values of these measurements were observed in the 50:50 orchardgrass-alfalfa mixtures. Negative associative effects on NDFD (Figure 2c, p < 0.05) were observed when the proportion of alfalfa increased in hay and silage mixtures.…”

Section: Degradation Characteristics and Gas Production Kinetics Of Hmentioning

confidence: 93%

“…Negative associative effects on NDFD (Figure 2c, p < 0.05) were observed when the proportion of alfalfa increased in hay and silage mixtures. The IVDMD (Figure 2a, p < 0.001) and IVOMD (Figure 2b, p < 0.05) were greater in the silage mixtures than in the hay mixtures, but no effects of preservation method were observed for NDFD ( Figure 2c), ADFD (Figure 2d), GP 48 (Table 3) or other parameters of GP kinetics (Table 3). Positive associative effects were also observed for the fractional GP rate (c) and AGPR as the proportion of alfalfa increased in hay and silage mixtures (p < 0.05).…”

Section: Degradation Characteristics and Gas Production Kinetics Of Hmentioning

confidence: 94%

“…Similarly, these antagonistic effects were more evident when the proportion of alfalfa was greater than 25% in alfalfa-Caucasian bluestem hay mixtures [46]. The dominant fibrolytic bacteria, that are not proteolytic, require NH 3 and branched-chain VFAs that are usually derived from active proteolytic bacteria and amino acid fermentation bacteria that do not ferment carbohydrates [47,48]. The degradable and rapidly digested N from legumes compensated for the slow release of N from grasses and coincided with associations and shifts in the ruminal microbial community [15,49] to better degrade the fiber fractions in grass-legume mixtures [46,50].…”

Section: Associative Effects On the Degradation Characteristics And Gmentioning

confidence: 99%

“…GP48 , cumulative gas production at 48 h; A, asymptotic gas production; c, fractional rate of the gas production of 'A'; half-time, the time when 'A' reached its half-maximal value; AGPR, average gas production rate when half of 'A' occurred 2. SEM, standard error of the mean 3.…”

mentioning

confidence: 99%

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Combining Orchardgrass and Alfalfa: Effects of Forage Ratios on In Vitro Rumen Degradation and Fermentation Characteristics of Silage Compared with Hay

Xue

Wang

et al. 2019

Animals

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Simple Summary: Forages are an essential portion of ruminant rations to maintain rumen function. Exploring how orchardgrass and alfalfa interact in the rumen is necessary to better understand their feed use potential as both hay and silage. This study evaluated in vitro rumen degradation, fermentation characteristics, and methane production responses to different forage ratios of alfalfa and orchardgrass. The results indicate that dry matter and organic matter degradability and methane production were greater for mixed silages compared to mixed hays. A forage ratio of 50:50 for orchardgrass and alfalfa favor the growth of rumen microorganisms without compromising nutrient digestion and rumen fermentation.Abstract: This study aimed to investigate the effects of different forage ratios of orchardgrass (Dactylis glomerata) and alfalfa (Medicago sativa) on in vitro rumen degradation and fermentation characteristics. Orchardgrass and alfalfa were harvested separately and prepared as hay and silage mixtures at ratios of 100:0, 75:25, 50:50, 25:75, and 0:100 (w/w on a dry matter basis) and anaerobically incubated for 48 h with rumen fluid obtained from lactating dairy cows. Fermented residues and cultured fluids were used to determine nutrient degradability, fermentation parameters, and associative effect indices. Increasing the proportion of alfalfa in hay and silage mixtures quadratically increased in vitro organic matter disappearance (IVOMD, up +5.14%) and marginally decreased in vitro neutral detergent fiber disappearance (NDFD, down −1.79%). Meanwhile, increasing the proportion of alfalfa accelerated the rumen fermentation process (e.g., gas production) and remarkably enhanced the growth of rumen microbes as indicated by microbial protein production (MCP, 13.4% increase). Increments of rumen degradability and methane production were more pronounced in silage mixtures than hay mixtures. In combination, a forage ratio of 50:50 for orchardgrass and alfalfa is recommended for both hay and silage in order to improve the feed use potential in ruminants.

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Section: Sfaei and Mfaei Of Hay And Silage Mixturesmentioning

confidence: 78%

Section: Degradation Characteristics and Gas Production Kinetics Of Hmentioning

confidence: 93%

Section: Degradation Characteristics and Gas Production Kinetics Of Hmentioning

confidence: 94%