scholarly journals In situ ruminal degradation kinetics of forages and feed byproducts in male Nili-Ravi buffalo calves

1996 ◽  
Vol 9 (5) ◽  
pp. 533-538 ◽  
Author(s):  
M. Sarwar ◽  
S. Mahmood ◽  
W. Abbas ◽  
C. S. Ali
Keyword(s):  
Degradation Kinetics ◽  
Buffalo Calves ◽  
Ruminal Degradation ◽  
Kinetics Of

Effects of Drying and Ensiling on In situ Cell Wall Degradation Kinetics of Tomato Pomace in Ruminant

2012 ◽  
Vol 6 (4) ◽  
pp. 196-202 ◽  
Author(s):  
Naser Maheri-Sis ◽  
Mohammad Chamani ◽  
Ali Asghar Sadeghi ◽  
Ali Mirzaaghaz ◽  
Kambiz Nazeradl ◽  
...  
Keyword(s):  
Cell Wall ◽  
Degradation Kinetics ◽  
Cell Wall Degradation ◽  
Tomato Pomace ◽  
Kinetics Of

scholarly journals SYNCHRONIZATION OF CARBOHYDRATE AND PROTEIN SUPPLY IN THE SUGARCANE BAGASSE BASED RATION ON IN SITU NUTRIENT DEGRADABILITY

2016 ◽  
Vol 41 (1) ◽  
pp. 28-36 ◽  
Author(s):  
F. F. Sani ◽  
L. K. Nuswantara ◽  
E. Pangestu ◽  
F. Wahyono ◽  
J. Achmadi
Keyword(s):  
Sugarcane Bagasse ◽  
Crude Protein ◽  
Degradation Kinetics ◽  
Nitrogen Supply ◽  
Neutral Detergent Fiber ◽  
Synchronization Index ◽  
In Situ Degradation ◽  
Protein Supply ◽  
Kinetics Of

Two adult male sheeps fitted with rumen cannula were used in two experiments to study the effects of synchronization of carbohydrate and nitrogen supply in sugarcane bagasse based total mixed ration (TMR) on in situ nutrient degradation. The first experiment was aimed to create three TMR with different synchronization index. Ingredient feedstuffs of TMR were evaluated for its in situ organic matter (OM) and nitrogen (N) degradation kinetics. On the basis of the OM and N degradation kinetics of feedstuffs, three sugarcane bagasse based TMR were formulated with synchronization indexes of 0.37; 0.50; and 0.63; respectively. The TMR had similar levels of crude protein (CP), total digestible nutrients, and neutral detergent fiber (NDF). In the second experiment, the three TMR with different synchronization index were evaluated for in situ degradability characteristics of OM, CP, NDF, and sulfur. The in situ degradation of OM in TMR were decreased (P<0.05) with the increasing of synchronization index. The higher synchronization index in TMR increased (P<0.05) CP degradation of CP. The NDF degradation decreased slightly by the alteration of synchronization index in TMR. The higher synchronization index in TMR reduced (P<0.05) in situ sulfur degradation, and this may not support to effects of synchronization of carbohydrate and nitrogen supply.  

scholarly journals In situ degradability of dry matter and fibrous fraction of sorghum silage

2016 ◽  
Vol 38 (2) ◽  
pp. 171 ◽  
Author(s):  
Renê Ferreira Costa ◽  
Daniel Ananias de Assis Pires ◽  
Marielly Maria Almeida Moura ◽  
José Avelino Santos Rodrigues ◽  
Vicente Ribeiro Rocha Júnior ◽  
...  
Keyword(s):  
Experimental Design ◽  
Dry Matter ◽  
Degradation Rate ◽  
Degradation Kinetics ◽  
Grain Sorghum ◽  
Dual Purpose ◽  
Ruminal Degradability ◽  
Sorghum Silage ◽  
Kinetics Of

This study aimed to evaluate in situ degradability and degradation kinetics of DM, NDF and ADF of silage, with or without tannin in the grains. Two isogenic lines of grain sorghum (CMS-XS 114 with tannin and CMS-XS 165 without tannin) and two sorghum hybrids (BR-700 dual purpose with tannin and BR-601 forage without tannin) were ensiled; dried and ground silage samples were placed in nylon bags and introduced through the fistulas. After incubation for 6, 12, 24, 48, 72 and 96 hours, bags were taken for subsequent analysis of fibrous fractions. The experimental design was completely randomized with 4 replicates and 4 treatments and means compared by Tukey’s test at 5% probability. As for the DM degradation rate, silage of CMSXS165without tannin was superior. Silages of genotypes BR700 and CMSXS 114 with tannin showed the highest values of indigestible ADF (59.54 and 43.09%). Regarding the NDF, the potential degradation of silage of CMSXS165 line without tannin was superior. Tannin can reduce ruminal degradability of the dry matter and fibrous fractions. 

scholarly journals Interactive Curve-Linear Relationship Between Alteration of Carbohydrate Macromolecular Structure Traits in Hulless Barley (Hordeum vulgare L.) Grain and Nutrient Utilization, Biodegradation and Bioavailability

2019 ◽  
Vol 20 (6) ◽  
pp. 1366 ◽  
Author(s):  
Baoli Sun ◽  
Luciana L. Prates ◽  
Peiqiang Yu
Keyword(s):  
Linear Relationship ◽  
Crude Protein ◽  
Degradation Kinetics ◽  
Nutrient Utilization ◽  
Macromolecular Structure ◽  
Hulless Barley ◽  
Quadratic Effect ◽  
Nutrient Profiles ◽  
Kinetics Of

The aim of this study was to reveal an interactive curve-linear relationship between altered carbohydrate macromolecular structure traits of hulless barley cultivars and nutrient utilization, biodegradation, as well as bioavailability. The cultivars had different carbohydrate macromolecular traits, including amylose (A), amylopectin (AP), and β-glucan contents, as well as their ratios (A:AP). The parameters assessed included: (1) chemical and nutrient profiles; (2) protein and carbohydrate sub-fractions partitioned by the Cornell Net Carbohydrate and Protein System (CNCPS); (3) total digestible nutrients (TDN) and energy values; and (4) in situ rumen degradation kinetics of nutrients and truly absorbed nutrient supply. The hulless barley samples were analyzed for starch (ST), crude protein (CP), total soluble crude protein (SCP), etc. The in situ incubation technique was performed to evaluate the degradation kinetics of the nutrients, as well as the effective degradability (ED) and bypass nutrient (B). Results showed that the carbohydrates (g/kg DM) had a cubic relationship (p < 0.05), with the A:AP ratio and β-glucan level; while the starch level presented a quadratic relationship (p < 0.05), with the A:AP ratio and cubic relationship (p < 0.05), with β-glucan level. The CP and SCP contents had a cubic relationship (p < 0.05) with the A:AP ratio and β-glucan level. The altered carbohydrate macromolecular traits were observed to have strongly curve-linear correlations with protein and carbohydrate fractions partitioned by CNCPS. For the in situ protein degradation kinetics, there was a quadratic effect of A:AP ratio on the rumen undegraded protein (RUP, g/kg DM) and a linear effect of β-glucan on the bypass protein (BCP, g/kg DM). The A:AP ratio and β-glucan levels had quadratic effects (p < 0.05) on BCP and EDCP. For ST degradation kinetics, the ST degradation rate (Kd), BST and EDST showed cubic effects (p < 0.05) with A:AP ratio. The β-glucan level showed a cubic effect on EDST (g/kg DM) and a quadratic effect on BST (g/kg ST or g/kg DM) and EDST (g/kg DM). In conclusion, alteration of carbohydrate macromolecular traits in hulless barley significantly impacted nutrient utilization, metabolic characteristics, biodegradation, and bioavailability. Altered carbohydrate macromolecular traits curve-linearly affected the nutrient profiles, protein and carbohydrate fractions, total digestible nutrient, energy values, and in situ degradation kinetics.

Evaluation of mathematical models to describe protein fraction degradation kinetics of various oilseed meals

2009 ◽  
Vol 2009 ◽  
pp. 171-171
Author(s):  
M Danesh Mesgaran ◽  
T Tashakkori ◽  
A Heravi Moussavi ◽  
S Danesh Mesgaran ◽  
A Vakili ◽  
...  
Keyword(s):  
Mathematical Models ◽  
Goodness Of Fit ◽  
Degradation Kinetics ◽  
Direct Method ◽  
Rapeseed Meal ◽  
Insoluble Protein ◽  
Degradation Kinetic ◽  
Negative Exponential ◽  
Kinetics Of

In situ procedure is a direct method of measuring the rumen degradation kinetic of a feed nutrient. Data obtained by this technique are generally analysed using an exponential curve (Ørskov and McDonald, 1979). However, very low attention has been paid to choice of mathematical model to fit the curves and goodness-of-fit of the model. Lopez et al. (1999) pointed out that the disappearance of some feed components, particularly structural carbohydrates, exhibits a larger variety of forms than for crude protein (CP). In the present study, two different mathematical models of a straight line or a negative exponential (France et al., 1990; and Ørskov and McDonald, 1979) were selected to evaluate in situ degradation kinetics of protein fractions including true protein (TP), neutral-detergent insoluble protein (NDIP) and acid-detergent insoluble protein (ADIP) of various oilseed meals (cottonseed meal (CSM), soyabean meal (SM) and rapeseed meal (RM)).

scholarly journals Nitrogen degradation of the limestone-urea mixtures in the rumen of goats

2018 ◽  
Vol 43 (3) ◽  
pp. 282
Author(s):  
M. A. Harahap ◽  
L. K. Nuswantara ◽  
E. Pangestu ◽  
F. Wahyono ◽  
J. Achmadi
Keyword(s):  
Dietary Supplement ◽  
Dry Matter ◽  
Degradation Rate ◽  
Slow Release ◽  
Soluble Fraction ◽  
Degradation Kinetics ◽  
Central Java ◽  
Ruminal Degradation ◽  
Kinetics Of ◽  
Central Java Province

This experiment was aimed to study the degradation kinetics of limestone-urea mixtures in the goats rumen using the nylon bag technique. Samples of limestone were obtained from two limestone mountains, Pamotan Subdistrict of Central Java Province and Wonosari Subdistrict of Yogyakarta Province. The mixtures were created by combining urea at levels 25, 50, 75and 100%; respectively with two limestones on the basis of their Ca contents: L0U100, LP25U75, LP50U50; LP75U25, LW25U75; LW50U50; and LW75U25. The soluble fraction, potentially degradable fraction, the degradation rate of potentially degradable fraction, and effective degradation of respective dry matter (DM) and nitrogen (N) ruminal degradation kinetics were measured in each mixture. The mixture of LP75U25 had lowest effective and degradation rate of potentially degradable fraction (P<0.05) respectively for DM and N compared with those of other mixtures. In conclusion, the limestone-urea mixture of LP75U25 could be suggested as a dietary supplement of ruminal N slow release.

scholarly journals In situ degradation kinetics of 6 roughages and the intestinal digestibility of the rumen undegradable protein1

2018 ◽  
Vol 96 (11) ◽  
pp. 4835-4844 ◽  
Author(s):  
Qiujin Li ◽  
Bai Xue ◽  
Yumei Zhao ◽  
Tianqi Wu ◽  
Haichao Liu ◽  
...  
Keyword(s):  
Degradation Kinetics ◽  
In Situ Degradation ◽  
Kinetics Of ◽  
Intestinal Digestibility

scholarly journals Evaluation of Models to Describe Ruminal Degradation Kinetics from In Situ Ruminal Incubation of Whole Soybeans

2006 ◽  
Vol 89 (8) ◽  
pp. 3087-3095 ◽  
Author(s):  
M.H. Fathi Nasri ◽  
M. Danesh Mesgaran ◽  
J. France ◽  
J.P. Cant ◽  
E. Kebreab
Keyword(s):  
Degradation Kinetics ◽  
Ruminal Degradation

scholarly journals Chemical composition and ruminal degradation kinetics of crude protein and amino acids, and intestinal digestibility of amino acids from tropical forages

2012 ◽  
Vol 41 (3) ◽  
pp. 717-725 ◽  
Author(s):  
Lidia Ferreira Miranda ◽  
Norberto Mario Rodriguez ◽  
Elzânia Sales Pereira ◽  
Augusto César de Queiroz ◽  
Roberto Daniel Sainz ◽  
...  
Keyword(s):  
Amino Acids ◽  
Chemical Composition ◽  
Crude Protein ◽  
Degradation Kinetics ◽  
Ruminal Degradation ◽  
Tropical Forages ◽  
Kinetics Of ◽  
Intestinal Digestibility

Degradation kinetics of ultrathin HfO2 layers on Si(100) during vacuum annealing monitored with in situ XPS/LEIS and ex situ AFM

2007 ◽  
Vol 47 (4-5) ◽  
pp. 657-659 ◽  
Author(s):  
A. Zenkevich ◽  
Yu. Lebedinskii ◽  
G. Scarel ◽  
M. Fanciulli ◽  
A. Baturin ◽  
...  
Keyword(s):  
Vacuum Annealing ◽  
Degradation Kinetics ◽  
Ex Situ ◽  
In Situ Xps ◽  
Kinetics Of
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