scholarly journals Changes in rumen microbiota composition and in situ degradation kinetics during the dry period and early lactation as affected by rate of increase of concentrate allowance

2017 ◽  
Vol 100 (4) ◽  
pp. 2695-2710 ◽  
Author(s):  
K. Dieho ◽  
B. van den Bogert ◽  
G. Henderson ◽  
A. Bannink ◽  
J. Ramiro-Garcia ◽  
...  
Keyword(s):  
Degradation Kinetics ◽  
Early Lactation ◽  
Microbiota Composition ◽  
Dry Period ◽  
Rumen Microbiota ◽  
Rate Of Increase ◽  
In Situ Degradation

Chemical characteristics and in situ ruminal parameters of barley for cattle: Comparison of the malting cultivar AC Metcalfe and five feed cultivars

2008 ◽  
Vol 88 (4) ◽  
pp. 711-719 ◽  
Author(s):  
Kenton J Hart ◽  
Brian G Rossnagel ◽  
Peiqiang Yu
Keyword(s):  
Nutritive Value ◽  
Degradation Kinetics ◽  
Starch Degradation ◽  
Barley Cultivars ◽  
Degradation Rates ◽  
Key Words Barley ◽  
In Situ Degradation ◽  
The Mean ◽  
Pass Through

The objective of this study was to compare the most widely grown barley cultivar in Canada, AC Metcalfe, a malting type barley, with five feed cultivars. Barley cultivars were grown at one location during 3 consecutive years and barley samples were milled to pass through a 1-mm screen and analysed to determine nutritive value. Additional samples were passed through a roller mill with a gap set at 1.12 mm and incubated ruminally for 0, 2, 4, 8, 12, 24, and 48 h in 3 dry Holstein cows fitted with rumen cannulae. The rate and extent of rumen digestion were estimated. AC Metcalfe had a higher (P < 0.001) concentration of NDF, and lower (P < 0.05) concentrations of non structural carbohydrates, starch, ADF, total digestible nutrients, and fermentable cell wall carbohydrates compared with the mean of the feed cultivars. The malting cultivar had a higher (P < 0.001) soluble DM fraction, lower (P < 0.05) CP and starch degradation rates, and a lower (P < 0.001) ruminally degradable starch concentration compared with the mean of the five feed cultivars. The results demonstrate that there are only small differences in terms of chemical composition and in situ degradation kinetics between the malting cultivar AC Metcalfe and the five feed cultivars of barley reported here. Key words: Barley, energy, protein, ruminants

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 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 Rumen In Vitro Fermentation and In Situ Degradation Kinetics of Winter Forage Brassicas Crops

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 904 ◽  
Author(s):  
Daza ◽  
Benavides ◽  
Pulido ◽  
Balocchi ◽  
Bertrand ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Degradation Kinetics ◽  
Brassica Species ◽  
Gas Production ◽  
Neutral Detergent Fiber ◽  
In Vitro Fermentation ◽  
Fermentation Products ◽  
In Situ Degradation

The aim of the present study was to evaluate the nutritional value, the rumen in vitro fermentation, and the in situ degradation of Brassica oleracea (L.) ssp. acephala (kales) and Brassica napus (L.) ssp. napobrassica (swedes) for winter use. Five varieties of each brassica were used in three field replicates and were randomized in a complete block nested design. All forage varieties were harvested at 210 days post-sowing to analyze the chemical composition, in vitro gas production, volatile fatty acid (VFA) production and in situ dry matter (DM) and crude protein (CP) degradability. Kales presented higher DM and neutral detergent fiber (NDF) content (p < 0.01), whereas swedes showed higher CP, metabolizable energy (ME), glucose, fructose, total sugars, NFC, and nonstructural carbohydrate (NSC) content (p < 0.01). The kale and swede varieties differed in their CP and sugar concentrations, whereas the kale varieties differed in their DM and raffinose content. The rates of gas production were higher for swedes than for kales (p < 0.01). No differences between the brassica species (p > 0.05) were observed in the total VFA production, whereas kales had a higher proportion of acetate and swedes had higher proportions of butyrate (p < 0.05). Only the swede varieties showed differences in VFA production (p < 0.05). The soluble fraction “a”, potential and effective in situ DM degradability were higher in swedes (p < 0.01), but kales presented greater DM and CP degradation rates. Differences were observed between brassica species in the chemical composition, degradation kinetics, and ruminal fermentation products, whereas differences among varieties within species were less frequent but need to be considered.

In situ degradation kinetics of maize hybrid stalks

1997 ◽  
Vol 68 (1-2) ◽  
pp. 77-88 ◽  
Author(s):  
M.R. Tovar-Gómez ◽  
J.C. Emile ◽  
B. Michalet-Doreau ◽  
Y. Barrière
Keyword(s):  
Degradation Kinetics ◽  
Maize Hybrid ◽  
In Situ Degradation ◽  
Kinetics Of

Comparison of in situ degradation kinetics of lucerne germplasm by ANOVA of non-linear models

1995 ◽  
Vol 54 (1-4) ◽  
pp. 287-299 ◽  
Author(s):  
I. Andrighetto ◽  
G. Cozzi ◽  
G. Magni ◽  
B. Hartman ◽  
M. Hinds ◽  
...  
Keyword(s):  
Linear Models ◽  
Degradation Kinetics ◽  
Non Linear ◽  
In Situ Degradation ◽  
Kinetics Of

scholarly journals Morphological adaptation of rumen papillae during the dry period and early lactation as affected by rate of increase of concentrate allowance

2016 ◽  
Vol 99 (3) ◽  
pp. 2339-2352 ◽  
Author(s):  
K. Dieho ◽  
A. Bannink ◽  
I.A.L. Geurts ◽  
J.T. Schonewille ◽  
G. Gort ◽  
...  
Keyword(s):  
Early Lactation ◽  
Morphological Adaptation ◽  
Dry Period ◽  
Rate Of Increase
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