The use of an enzymatic technique to predict digestibility, metabolizable and net energy of compound feedstuffs for ruminants

Boever, J.L. De; Cottyn, B. G.; Buysse, F.; Wainman, F. W.; Vanacker, J.M.

doi:10.1016/0377-8401(86)90093-3

Cited by 118 publications

(73 citation statements)

References 9 publications

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“…The pepsin-cellulase technique was used to estimate the OM digestibility (enzymatic OMD) of fungal incubated rape straw, as well as non-incubated rape straw, according to De Boever et al (1986). Determination was in triplicate for each sample.…”

Section: Pepsin-cellulase Studymentioning

confidence: 99%

Effect of Fungal Treatments of Rape Straw on Chemical Composition and in vitro Rumen Fermentation Characteristics

Zhao¹,

Gong²,

Zhou³

et al. 2014

BioResources

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The use of rape straw in ruminant production is limited by its high lignin content and low ruminal degradability. White rot fungi are the most efficient known degraders of lignin. Four white rot fungi were investigated for their potential to degrade lignin and improve rumen fermentation of rape straw. Solid state fermentation of the straw was carried out for 0 to 30 days to determine changes in chemical composition and in vitro rumen fermentation. Results showed that Phanerochaete chrysosporium and Lentinula edodes degraded about 45% of lignin and enhanced the in vitro organic matter digestibility (IVOMD) and volatile fatty acid production; however, about 55% of the cellulose was lost after 30 days of incubation. Ceriporiopsis subvermispora and Phlebia acerina degraded a fraction (< 30%) of lignin and cellulose, but inhibited ruminal fermentation. Fungal incubation increased the chitin content of rape straw. Regression analysis showed that the IVOMD increase depended on the combined action of neutral detergent fiber loss and chitin content increase in rape straw. This study indicates that considerations of the conversion of rape straw into ruminant feed with white-rot fungi should take into account the degradation of lignin, fiber loss, and the chitin produced along with the growth of fungi.

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Section: Pepsin-cellulase Studymentioning

confidence: 99%

Effect of Fungal Treatments of Rape Straw on Chemical Composition and in vitro Rumen Fermentation Characteristics

Zhao¹,

Gong²,

Zhou³

et al. 2014

BioResources

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“…The most conventional procedure is the determination of in vivo digestibility, but it is both laborious and expensive. Therefore, techniques have been developed, such as a method based on chemical composition (Clancy and Wilson, 1966), the gas production method (Menke et al, 1979), the nylon bag technique (Mehrez and Ørskov, 1977), the rumen fl uid in vitro procedure (Tilley and Terry, 1963) and an enzymatic in vitro technique (De Boever et al, 1986). Amongst them, the twostage technique of Tilley and Terry (1963) is popular for its good prediction.…”

Section: Introductionmentioning

confidence: 99%

Prediction of silage digestibility by near infrared reflectance spectroscopy

Liu¹,

Han²,

Yang³

et al. 2008

J. Anim. Feed Sci.

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A total of 142 silage samples were used to evaluate the ability of near infrared refl ectance spectroscopy (NIRS) to predict dry matter (DM) and neutral detergent fi bre (NDF) digestibility. Three techniques, Partial Least Square (PLS), Principal Component Regression (PCR) and Multivariate Linear Regression (MLR), and a series of mathematical treatments were applied to establish the NIRS calibrations. The F-test and T-test of correlativity between reference and NIRS values of silage samples in validation set were carried out to verify the models. Results showed the PLS technique gave the best prediction and calibrations, and that the calibrations developed from the combination of smooth and fi rst-order derivative treatment were largely acceptable. The prediction of DM digestibility of dried samples was good with the determination coeffi cient of validation (r²) being greater than 0.80. The prediction of dried samples was better than that of fresh samples. The relative standard deviation (RSD) values of DM digestibility for dried and fresh samples were 8.25 and 11.26%, respectively. As for NDF digestibility, the RSD values were higher, being of 22.87 and 23.50% for dried and fresh samples, respectively.

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“…Ammonia was determined according to the Kjeldahl principle. Net energy value for fattening (NEF;van Es, 1978) of the feeds was determined as described by De Boever et al (1999), based on the content of fat and ash, and cellulase organic matter digestibility (De Boever et al, 1986). Protein values (DVE: true protein digested in the small intestine, and OEB: rumen degradable protein balance) of the feeds were calculated according to Tamminga et al (1994), based on chemical analyses, ingredient composition of the concentrates and tabular data for ruminal degradation and intestinal absorption of the protein.…”

Section: Methodsmentioning

confidence: 99%

Effect of cull potatoes in the diet for finishing Belgian Blue double-muscled cows

Fiems¹,

Boever²,

Vanacker³

et al. 2013

Animal

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The use of culled potatoes was investigated in Belgian Blue double-muscled finishing cows, confined in tie stalls. The control diet (Treatment 1) consisted of concentrate and maize silage (50/50 on a dry matter (DM) basis). Potatoes either replaced 60% maize silage (Treatment 2) or 60% concentrate (Treatment 3). Diets were formulated to be isocaloric and isonitrogenous. They were fed ad libitum. Approximately 18 kg potatoes were fed daily in Treatments 2 and 3. Daily gain was not significantly altered; it decreased from 1.09 kg (Treatment 1) to 1.04 kg (Treatment 2) or increased to 1.20 kg (Treatment 3), although potatoes stimulated DM intake by 5% to 8% ( P , 0.05). Feed conversion was unaffected in comparison with the control diet, when expressed in terms of DM, but energy efficiency (MJ/kg live weight gain) was substantially lower for Treatment 2 compared with Treatment 1 (89.9 v. 79.0; P 5 0.046). Carcass weight, grading and composition were not affected by treatments, but potatoes increased dressing percentage ( P 5 0.009). Treatment had no significant effect on meat quality parameters. However, potatoes (Treatments 2 and 3) tended to decrease moisture content ( P 5 0.090) and tended to increase drip loss ( P 5 0.059) compared with Treatment 1. Because of a better animal performance and a lower feed cost, it is most appropriate to use potatoes as a replacement for concentrate. Feeding large amounts of potatoes besides concentrate may have an adverse effect on the fibrousness of the diet, resulting in a tendency (25%) for a reduced daily gain and a lower energy efficiency ( P , 0.05).

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The use of an enzymatic technique to predict digestibility, metabolizable and net energy of compound feedstuffs for ruminants

Cited by 118 publications

References 9 publications

Effect of Fungal Treatments of Rape Straw on Chemical Composition and in vitro Rumen Fermentation Characteristics

Effect of Fungal Treatments of Rape Straw on Chemical Composition and in vitro Rumen Fermentation Characteristics

Prediction of silage digestibility by near infrared reflectance spectroscopy

Effect of cull potatoes in the diet for finishing Belgian Blue double-muscled cows

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