Diagnosis and Management of Subacute Ruminal Acidosis in Dairy Herds

2017 ◽  
Vol 33 (3) ◽  
pp. 463-480 ◽  
Author(s):  
Garrett R. Oetzel
Keyword(s):  
Dairy Herds ◽  
Subacute Ruminal Acidosis ◽  
Diagnosis And Management ◽  
Ruminal Acidosis

Prevalence and consequence of subacute ruminal acidosis in Polish dairy herds

2016 ◽  
Vol 101 (4) ◽  
pp. 694-702 ◽  
Author(s):  
B. Stefańska ◽  
W. Nowak ◽  
J. Komisarek ◽  
M. Taciak ◽  
M. Barszcz ◽  
...  
Keyword(s):  
Dairy Herds ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Acidosis

scholarly journals Subacute Ruminal Acidosis and Evaluation of Blood Gas Analysis in Dairy Cow

2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Matteo Gianesella ◽  
Massimo Morgante ◽  
Chiara Cannizzo ◽  
Annalisa Stefani ◽  
Paolo Dalvit ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Dairy Herds ◽  
Blood Gas ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Ph ◽  
Ruminal Acidosis ◽  
Rumen Ph ◽  
Fermentable Carbohydrates

Subacute Ruminal Acidosis (SARA) corresponds to an imbalance between lactate-producing bacteria and lactate-using bacteria, which results in a change in ruminal pH associated with a prevalent consumption of rapidly fermentable carbohydrates. In our study, 216 primiparus and multiparus dairy cows were selected from 20 Italian intensive dairy herds and were divided into three groups based on the risk of SARA. All the dairy cows had high average milk production. After blood sampling, a complete blood gas analysis was performed. One-way ANOVA was performed to compare the three groups. Cont, PC, blood pH, Hb, urinary pH, and rumen pH were significantly lower in cows with rumen . These results indicate that blood gas analysis is a valuable tool to diagnose acidosis in dairy cows because it provides good assessment of acidosis while being less invasive than rumen pH analysis.

Subacute ruminal acidosis in Dutch dairy herds

2009 ◽  
Vol 164 (22) ◽  
pp. 681-684 ◽  
Author(s):  
J. L. Kleen ◽  
G. A. Hooijer ◽  
J. Rehage ◽  
J. P. T. M. Noordhuizen
Keyword(s):  
Dairy Herds ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Acidosis

scholarly journals Evaluation of the ruminal function of Belgian dairy cows suspected of subacute ruminal acidosis

2017 ◽  
Vol 86 (1) ◽  
pp. 16-23
Author(s):  
F. Lessire ◽  
E. Knapp ◽  
L. Theron ◽  
J. L. Hornick ◽  
I. Dufrasne ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Dairy Cows ◽  
Dairy Herds ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Fluid ◽  
Ruminal Ph ◽  
Ruminal Acidosis ◽  
Ph Values ◽  
Microscopic Evaluation ◽  
Methylene Blue Reduction

Subacute ruminal acidosis (SARA) has been considered a major pathology in high producing dairy herds for years. These findings were corroborated by several studies in Europe. However, different feeding practices and herds’ production levels are found in Southern Belgium. This study aimed to ascertain whether dairy cows of several herds from the south of Belgium (Wallonia) with a suspicion of SARA really did present too low ruminal pH values. Twenty-four herds were visited and 172 cows were sampled using an oropharyngeal device to collect ruminal fluid, i.e. Geishauser probe. On the samples, three tests were performed: pH measurement, methylene blue reduction test and microscopic evaluation of protozoa vitality. Based on these analyses, no cows demonstrated pH values lower than 5.5 and, only ten cows could be considered at risk for SARA. By contrast, in eightteen cows, pH values higher than 7.0 were measured and ruminal inactivity was suspected. In this study, ruminal alkalosis appeared to be more frequently observed than SARA.

scholarly journals Noninvasive indicators associated with subacute ruminal acidosis in dairy cows

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Barbara Stefańska ◽  
Jolanta Komisarek ◽  
Włodzimierz Nowak
Keyword(s):  
Ammonia Nitrogen ◽  
Dairy Herds ◽  
Subacute Ruminal Acidosis ◽  
Urea Nitrogen ◽  
Ruminal Fluid ◽  
Assigned Value ◽  
Ruminal Acidosis ◽  
Rumen Ph ◽  
Milk Urea ◽  
Milk Urea Nitrogen

AbstractThe aim of the study was to characterize the interrelationship between decreased ruminal fluid pH during subacute ruminal acidosis (SARA) and concentrations of principal constituents of milk and biochemical indices associated with nitrogen utilizations such as rumen ammonia nitrogen (RAN), blood urea nitrogen (BUN) and milk urea nitrogen (MUN). Ruminal fluid samples were obtained by rumenocentesis from 305 cows representing 13 dairy herds. The cows were divided according to ruminal fluid pH into three groups: low, moderate, and high rumen pH cows. The herds were divided into three groups on the basis of the percentages of cows with an assigned value of ruminal fluid pH: SARA-positive, SARA-risk and SARA-negative. SARA-positive herds were characterized by higher concentrations of RAN (12.6 vs. 6.9 mg/dL), BUN (16.2 vs. 10.1 mg/dL) and MUN (12.4 vs. 9.1 mg/dL) compared to SARA-negative herds. Similarly, low-rumen pH cows had greater concentrations of RAN, BUN and MUN than high-rumen pH cows (11.9 vs. 5.8 mg/dL, 19.9 vs. 14.1 mg/dL, and 12.3 vs. 9.5 mg/dL, respectively). Moreover, SARA-positive herds and low-rumen pH cows had the highest lactose and the lowest fat concentrations in milk. The study demonstrated that the concentration of milk urea nitrogen could be considered one of the indirect and non-invasive indicators of the occurrence of subacute ruminal acidosis in dairy herds.

scholarly journals Metagenomic Insight: Dietary Thiamine Supplementation Promoted the Growth of Carbohydrate-Associated Microorganisms and Enzymes in the Rumen of Saanen Goats Fed High-Concentrate Diets

2021 ◽  
Vol 9 (3) ◽  
pp. 632
Author(s):  
Ying Zhang ◽  
Chao Wang ◽  
Along Peng ◽  
Hao Zhang ◽  
Hongrong Wang
Keyword(s):  
Control Diet ◽  
Starch Degradation ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Acidosis ◽  
Fiber Degradation ◽  
Rumen Ph ◽  
Carbohydrate Degradation ◽  
Ruminal Microbiota ◽  
New Perspective ◽  
The Relationship

Subacute ruminal acidosis (SARA) is often caused by feeding a high-concentrate diet in intensive ruminant production. Although previous studies have shown that dietary thiamine supplementation can effectively increase rumen pH and modify rumen fermentation, the effect of thiamine supplementation on rumen carbohydrate-related microorganisms and enzymes in goats under SARA conditions remain unclear. Therefore, the objective of the present study was to investigate the effects of dietary thiamine supplementation on carbohydrate-associated microorganisms and enzymes in the rumen of Saanen goats fed high-concentrate diets. Nine healthy mid-lactating Saanen goats in parity 1 or 2 were randomly assigned into three treatments: A control diet (CON; concentrate:forage (30:70)), a high-concentrate diet (HC; concentrate:forage (70:30)), and a high-concentrate diet with 200 mg of thiamine/kg of DMI (HCT; concentrate:forage (70:30)). Compared with the HC group, dietary thiamine supplementation improved ruminal microbes associated with fiber, including Prevotella, Fibrobacter, Neocallimastix, and Piromyces (p < 0.05). In addition, an increase in the relative abundance of enzymes involved in both fiber degradation and starch degradation, such as CBM16, GH3, and GH97, was observed in the HCT treatment. (p < 0.05). Thus, thiamine supplementation can improve carbohydrate metabolism by increasing the abundance of the microorganisms and enzymes involved in carbohydrate degradation. In conclusion, this study revealed the relationship between ruminal microbiota and enzymes, and these findings contributed to solving the problems arising from the high-concentrate feeding in ruminant production and to providing a new perspective on ruminant health.

scholarly journals Subacute Ruminal Acidosis in Zebu Cattle: Clinical and Behavioral Aspects

Animals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 21
Author(s):  
Natalia Sato Minami ◽  
Rejane Santos Sousa ◽  
Francisco Leonardo Costa Oliveira ◽  
Mailson Rennan Borges Dias ◽  
Débora Aparecida Cassiano ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Dry Matter ◽  
Short Chain Fatty Acids ◽  
Clinical Aspects ◽  
Zebu Cattle ◽  
Subacute Ruminal Acidosis ◽  
Ruminal Ph ◽  
Ruminal Acidosis ◽  
Citrus Pulp ◽  
Lactic Acids

We evaluated the clinical aspects and feeding behavior of cattle with subacute ruminal acidosis (SARA) caused by short-chain fatty acids (SCFAs). Ten healthy Nelore heifers were subjected to an adjusted SARA induction protocol using citrus pulp (CP). Clinical examinations were performed at baseline and at 3, 6, 9, 12, 15, 18, and 24 h intervals after induction, with ruminal fluid, blood, and feces sampling. The animals’ feeding behavior was evaluated on, before, and for 3 days after SARA by observing the animals every 5 min for 24 h. The dry matter intake (DMI) was recorded daily. The ruminal pH during SARA was always lower than baseline, with an acidotic duration of 547 ± 215 min, a minimum pH of 5.38 ± 0.16, and an average pH of 5.62 ± 0.1. SARA was mainly caused by SCFAs (maximum 118.4 ± 9.3 mmol/L), with the production of l-lactic acids (7.17 mmol/L) and d-lactic acids (0.56 mmol/L) 6 h after the experiment began. The DMI was reduced by 66% and 48% on days 1 and 2, respectively, and returned to normal levels on day 3. SARA caused a reduction in feed intake and rumination time, as well as an increase in the time spent in decubitus on days 1 and 2. These results were influenced by the ruminal pH, ruminal movement, and osmolarity. Furthermore, SARA caused different degrees of depression, which became more pronounced with higher ruminal lactic acid concentrations.

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