Ruminal fermentation kinetics of Moringa oleifera leaf and seed as protein feeds in dairy cow diets: in sacco degradability and protein and fiber fractions assessed by the CNCPS method

ABSTRACT The objective of this study was to develop a specific equation for the conversion of pressure values (psi) to volume (ml) for the Laboratory of Bromatology of the Federal University of Western Pará. To this end, the ruminal fermentation kinetics of regional feedstuffs were evaluated using the semi-automatic technique of in-vitro gas production. To set up the targeted equation, samples of ground corn, soybean meal, rice bran, Mombasa grass, cupuassu pie, cassava residues, and banana leaves were incubated and the pressure and volumes of the gases produced during the fermentation process were measured at predetermined times and related. These data on the volume of produced gases were used to determine, by applying the bi-compartmental logistic model, the ruminal fermentation kinetics parameters. The equation found for the laboratory was V = 0.3757P2 + 1.5972P + 0.2189. Ground corn and cassava residue showed a higher degradation rate of non-fibrous carbohydrates (0.120 and 0.163 %/h respectively) and higher final gas volume (228.91 and 273.17 ml/g of DM, respectively). As for the degradation rate of fibrous carbohydrates, ground corn (0.023 %/h), rice bran (0.023 %/h), and cassava residue (0.021 %/h) presented the highest degradation rate. Thus, a specific equation to be used at the Laboratory of Bromatology of the Federal University of Western Pará was identified, according to the method applied and the altitude of the premises. Ruminal fermentation kinetics of cassava residue and rice bran showed the same parameters as corn, which may suggest the possibility of replacing corn in the diet of ruminant animals.

Download Full-text

Effects of organic acid salts on ruminal biogas production and fermentation kinetics of total mixed rations with different maize silage to concentrate ratios

Journal of Cleaner Production ◽

10.1016/j.jclepro.2017.01.078 ◽

2017 ◽

Vol 147 ◽

pp. 523-530 ◽

Cited By ~ 5

Author(s):

Mona M.Y. Elghandour ◽

Ahmed E. Kholif ◽

Agustín Hernández ◽

Abdelfattah Z.M. Salem ◽

Miguel Mellado ◽

...

Keyword(s):

Organic Acid ◽

Biogas Production ◽

Maize Silage ◽

Fermentation Kinetics ◽

Kinetics Of ◽

Organic Acid Salts ◽

Acid Salts

Download Full-text

The need to complement in vitro gas production measurements with residue determinations from in sacco degradabilities to improve the prediction of voluntary intake of hays

Animal Science ◽

10.1017/s1357729800015563 ◽

1997 ◽

Vol 64 (1) ◽

pp. 71-75 ◽

Cited By ~ 21

Author(s):

M. Blümmel ◽

P. Bullerdieck

Keyword(s):

Volume Ratio ◽

Gas Production ◽

Published Data ◽

Fatty Acid Production ◽

Residue Determination ◽

In Vitro Gas Production ◽

Gas Volume ◽

In Sacco Degradability ◽

In Sacco

AbstractThe need to complement in vitro gas production measurements with residue determination is demonstrated by the recalculation and reassessment of published data on in vitro gas production, in sacco degradabilities and voluntary dry matter intake (DMI). The in sacco degradability — gas volume ratio was determined at 24 and 48 h of incubation, termed partitioning factor (PF) and combined with rate and extent parameters of in sacco degradability and in vitro gas production to predict DMI. In vitro gas production and in sacco degradability characteristics (a + b) and c as described by the equation y = a + b(1−ect) explained 0·373 and 0·668 respectively of the variation in DMI of 19 legume and grass hays. The complementation of gas production parameters by the PF24 increased the R2 value to 0·744 with PF24 accounting for 0·407 of the variation in DMI, the rate of gas production (c) for 0·218 and the extent of gas production (a + b) for 0·119 of the variation in DMI. As a single parameter, PF48 showed the highest correlation (R2 = 0·597) with DMI but the combination of PF4S with rate and extent of in sacco or in vitro gas production measurements did not improve the correlation further, probably due to an intercorrelation between rates of fermentation and PF4S. Hays which were degraded at faster rates had higher PF values indicating proportionally higher microbial yield and lower short-chain fatty acid production per unit substrate degraded. Generally, hays with high in sacco degradabilities but proportionally low gas production i.e. hays with high PF values showed higher DMI.

Download Full-text

Comparison of four in vitro gas production methods to study rumen fermentation kinetics of starch rich feeds

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200596379 ◽

1997 ◽

Vol 1997 ◽

pp. 196-196

Author(s):

S. Fakhri ◽

A. R. Moss ◽

D.I. Givens ◽

E. Owen

Keyword(s):

Rumen Fermentation ◽

Gas Production ◽

Production Methods ◽

Fermentation Kinetics ◽

In Vitro Gas Production ◽

Production Techniques ◽

Kinetics Of

Recently, the automatic in vitro gas production techniques (e.g. Cone. 1994; Theodorou et al., 1994) have been developed to study rumen fermentation kinetics. Many approaches have been taken. This work investigates the suitability of different methods for estimating the rumen fermentation of two starch rich feedstuffs.

Download Full-text