Effect of subacute ruminal acidosis on in situ digestion of mixed hay in lactating dairy cows

2001 ◽  
Vol 81 (3) ◽  
pp. 421-423 ◽  
Author(s):  
J. C. Plaizier ◽  
J. E. Keunen ◽  
J-P. Walton ◽  
T. F. Duffield ◽  
B. W. McBride
Keyword(s):  
Dairy Cows ◽  
Key Words ◽  
Dry Matter ◽  
Subacute Ruminal Acidosis ◽  
Total Mixed Ration ◽  
Neutral Detergent Fibre ◽  
Ruminal Acidosis ◽  
Lactating Dairy Cows

Induction of subacute ruminal acidosis (SARA) by replacing 25% of the total mixed ration (TMR) intake [dry matter (DM) basis] with pellets consisting of 50% wheat and 50% barley, reduced the in situ DM and neutral detergent fibre (NDF) digestion of mixed hay. In situ 48 h NDF disappearance was reduced from 39.5 to 30.9% (P < 0.05). Key words: Sub-acute ruminal acidosis, fibre digestibilty, dairy cows

The in situ degradability of dry matter, neutral detergent fibre and starch in whole-crop wheat harvested at three stages of maturity

1998 ◽  
Vol 1998 ◽  
pp. 147-147
Author(s):  
T.C. Moos ◽  
J.D. Sutton
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Early Stage ◽  
Neutral Detergent Fibre ◽  
Lactating Dairy Cows ◽  
Aerobic Stability ◽  
Three Stages

The choice of optimal stage of maturity at harvest for whole-crop wheat remains controversial. Problems of aerobic stability with crops harvested and ensiled at an early stage led to increased interest in harvesting at a later stage and preserving the crop with urea. However recent studies have shown low starch and fibre digestibility with such crops when fed to lactating dairy cows (Sutton et al.,1991). The purpose of the present work was to determine the effect of harvesting wheat at three stages of maturity on the in situ degradability of dry matter (DM), neutral detergent fibre (NDF) and starch.

Effect of monensin on meal frequency during sub-acute ruminal acidosis in dairy cows

2005 ◽  
Vol 85 (2) ◽  
pp. 247-249 ◽  
Author(s):  
D. E. Lunn ◽  
T. Mutsvangwa ◽  
N. E. Odongo ◽  
T. F. Duffield ◽  
R. Bagg ◽  
...  
Keyword(s):  
Controlled Release ◽  
Dairy Cows ◽  
Key Words ◽  
Recovery Period ◽  
Meal Frequency ◽  
Total Mixed Ration ◽  
Ruminal Acidosis ◽  
Lactating Dairy Cows ◽  
Ad Libitum ◽  
Ad Libitum Intake

Two experiments were conducted to determine the effects of monensin (Rumensin® controlled-release capsule; exp. 1 and Rumensin® Premix; exp. 2) on meal frequency during grain-induced sub-acute ruminal acidosis (SARA) in Holstein dairy cows. SARA was induced by restricting total mixed ration intake to 85% of ad libitum intake and replacing the remaining 15% with a grain pellet consisting of 50% wheat and 50% barley. In both experiments, meal frequency during SARA was lower (P < 0.05) than meal frequency during the adaptation and recovery periods. In exp. 2, monensin increased meal frequency during SARA (6.0 vs. 7.2, P = 0.04) and meal frequency during the recovery period (7.5 vs. 9.0, P = 0.004). These results suggest monensin premix may increase meal frequency in lactating dairy cows under conditions of SARA. Key words: dairy cows, monensin, ruminal acidosis, meal frequency

The in situ degradability of dry matter, neutral detergent fibre and starch in whole-crop wheat harvested at three stages of maturity

1998 ◽  
Vol 1998 ◽  
pp. 147-147
Author(s):  
T.C. Moos ◽  
J.D. Sutton
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Early Stage ◽  
Neutral Detergent Fibre ◽  
Lactating Dairy Cows ◽  
Aerobic Stability ◽  
Three Stages

The choice of optimal stage of maturity at harvest for whole-crop wheat remains controversial. Problems of aerobic stability with crops harvested and ensiled at an early stage led to increased interest in harvesting at a later stage and preserving the crop with urea. However recent studies have shown low starch and fibre digestibility with such crops when fed to lactating dairy cows (Sutton et al.,1991). The purpose of the present work was to determine the effect of harvesting wheat at three stages of maturity on the in situ degradability of dry matter (DM), neutral detergent fibre (NDF) and starch.

scholarly journals Active dry Saccharomyces cerevisiae can alleviate the effect of subacute ruminal acidosis in lactating dairy cows

2014 ◽  
Vol 97 (12) ◽  
pp. 7751-7763 ◽  
Author(s):  
O. AlZahal ◽  
L. Dionissopoulos ◽  
A.H. Laarman ◽  
N. Walker ◽  
B.W. McBride
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Dairy Cows ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Acidosis ◽  
Lactating Dairy Cows

323 Effect of an Acidogenic Diet with Phytogenic Supplementation on in Situ Degradability of Corn and Wheat Grain, and Grass Silage in Dairy Cows

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 174-174
Author(s):  
Raul Rivera-Chacon ◽  
Sara Ricci ◽  
Nicole Reisinger ◽  
Qendrim Zebeli ◽  
Ezequias Castillo-Lopez
Keyword(s):  
Dairy Cows ◽  
Fixed Effects ◽  
Dry Matter ◽  
Production Systems ◽  
Random Effect ◽  
Feed Additive ◽  
Wheat Grain ◽  
Ruminal Acidosis ◽  
Grass Silage

Abstract Modern dairy production systems require larger inputs of energy in diets to increase milk yield. Therefore, dairy cows are at risk of experiencing subacute ruminal acidosis (SARA). The objective of this study was to evaluate grains and forage rumen degradability in cows fed different diets supplemented with a phytogenic (PHY) feed additive. The experiment was conducted with nine rumen-cannulated non-lactating Holstein cows blocked in two groups of four and five animals, and were part of a cross-over design. This study consisted in 2 runs separated by a 12-week washout period, in which cows grazed on pasture. Each experimental run had one week of forage (F) feeding, one week of transition to a high grain (HG) diet, and four weeks of HG (65:35 concentrate to forage ratio in dry matter basis). Cows were supplemented with PHY (a blend of menthol and thymol) or a control carrier (CON) from week F. Corn and wheat grain were ground through a 4 mm screen, while grass silage was ground through a 6 mm screen. Sampling for in situ degradability was performed in F and in week four of HG diet. Data were analyzed with SAS with week of feeding and supplementation as fixed effects and cow as random effect. Corn and wheat 24-h dry matter (DM) and organic matter (OM) degradability increased during HG diet compared with F (P &lt; 0.05), grass silage DM and OM 48-h degradability was reduced by HG diet compared to F (P &lt; 0.01). Additionally, wheat grain 24-h OM degradability was higher for PHY compared to CON under F and HG diet conditions (P = 0.05). Overall, diet composition and SARA conditions can influence grains and fiber degradability in the rumen.

Sign in / Sign up

Export Citation Format

Share Document