Continuous and Long-Term Measurement of Reticuloruminal pH in Grazing Dairy Cows by an Indwelling and Wireless Data Transmitting Unit

Gasteiner, J.; Guggenberger, T.; Häusler, J.; Steinwidder, Andreas

doi:10.1155/2012/236956

Cited by 29 publications

(30 citation statements)

References 26 publications

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“…These units (3.5 cm i.d., 12 cm long, and weighing 210 g) were manually inserted into the reticulorumen via the esophagus (Gasteiner et al, 2012) in all cows on d 17 postpartum. Prior to this, the units were calibrated by a 2-point calibration using a buffer of pH 4.0 and one of pH 7.0 following the company's instruction protocol.…”

Section: Reticuloruminal Ph and Temperaturementioning

confidence: 99%

Long-term reticuloruminal pH dynamics and markers of liver health in early-lactating cows of various parities fed diets differing in grain processing

Humer¹,

Khol-Parisini²,

Grüber

et al. 2015

Journal of Dairy Science

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The present study aimed to investigate the long-term effect of feeding barley grain steeped in lactic acid (La) with or without thermal treatment on reticuloruminal pH dynamics and metabolic activity of the liver in 12 primiparous and 18 multiparous early-lactating dairy cows. All cows were included on d 21 postpartum and sampled until d 90 postpartum. Cows were fed a diet based on differently processed ground barley grain: untreated grain (control diet, CON), or grain treated with 1% La alone for 24 h before feeding (La), or with an additional oven-heating at 55°C for 12 h (LaH). The reticuloruminal pH and temperature were measured via indwelling sensors that allowed for continuous (every 10min) and long-term measurement from d 21 to 80 postpartum. Blood samples were taken on d 21, 40, and 90 of lactation and analyzed for liver enzymes aspartate aminotransferase (AST), gamma-glutamyltransferase, and glutamate dehydrogenase, as well as bilirubin, bile acids, and serum amyloid A. Dry matter intake was higher in multiparous cows (20.7±0.27 kg/d) compared with primiparous cows (18.2±0.33 kg/d), but was not affected by dietary treatment. Overall, the relatively short duration (51±5min/d) of reticuloruminal pH <5.8 suggests low risk of subacute ruminal acidosis throughout the experiment. Results indicated that La treatment of barley, with or without heat, lowered the time duration of pH <5.8 compared with CON, but only in primiparous cows (from 118±13 to 46±11 and 25±11min/d for CON, La, and LaH, respectively). In multiparous cows, the opposite effect of feeding the La-treated barley on time duration of pH <5.8 (11±8 vs. 46±9 vs. 57±9min/d for CON, La, and LaH, respectively) was observed. Multiparous cows generally showed higher pH readings and shorter periods in which the ruminal pH dropped below the threshold of pH 5.8. The reticuloruminal temperature was not affected by dietary treatment, whereas parity affected the time duration of reticuloruminal temperature >39.5°C, being 60±19min/d shorter in primiparous cows. The measured activities of the liver enzymes AST, gamma-glutamyltransferase, and glutamate dehydrogenase, as well as bilirubin, bile acids, and the acute phase protein serum amyloid A, were not affected by grain feeding. Additionally, only one small effect of parity on investigated serum variables was noticed, showing slightly but significantly higher values of AST in multiparous (80.5±1.4 U/L) compared with primiparous cows (76.0±1.7 U/L). In conclusion, our results indicate greater risk for primiparous cows to develop subacute ruminal acidosis-like conditions during early lactation than multiparous cows. The study also suggests limited benefits of feeding processed barley grain with La with or without thermal treatment to modulate ruminal tolerance of grain feeding, whereby differing effects in primiparous cows were observed compared with multiparous cows.

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Section: Reticuloruminal Ph and Temperaturementioning

confidence: 99%

Long-term reticuloruminal pH dynamics and markers of liver health in early-lactating cows of various parities fed diets differing in grain processing

Humer¹,

Khol-Parisini²,

Grüber

et al. 2015

Journal of Dairy Science

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“…It can be concluded that SARA might occur under practical conditions in dairy cows during a period of feed changeover and when pasture feeding is combined with the supplemental feeding of grain-based concentrates. The indwelling pH measuring device is a very helpful tool and can also be used for practical purposes (Gasteiner et al 2012). In a previous study, Enemark et al (2003) used devices which were initially developed for marine animals and observed a slightly positive electrode drift after ten days of continuous application in the reticulorumen of cows.…”

Section: Introductionmentioning

confidence: 99%

Usefulness of Acidity and Temperature of the Rumen and Abomasum in Diagnosing SARA in Dairy Cows after Calving

Antanaitis¹,

Žilaitis²,

Juozaitienė³

et al. 2016

Polish Journal of Veterinary Sciences

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The aim of the research was to determine the relationship between the acidity and temperature of the contents of the reticulorumen and abomasum in the first 10 days after calving and to evaluate these factors as predictive traits for the diagnosis of subclinical acidosis.The acidity and temperature of the contents of the reticulorumen and abomasum were measured using specific smaXtec boluses manufactured for animal care. According to the directions of the manufacturer, the boluses were inserted into the reticulorumen of the cows researched with the help of a specific tool. The boluses were inserted into the abomasa by way of surgery, laparotomy and abomasotomy through the right flank. The readings of 7 cows were taken on a total of 10 days, twice a day (at 9 a.m. and at 9 p.m.). In total, 140 measurements were taken.The acidity of the reticulorumen is associated with the acidity of the abomasum. The acidity of the rumen increases, if the acidity of the reticulorumen increases also. A negative correlation was observed between the pH of the contents of the abomasum and this temperature. The increase in the acidity (decrease of pH) of the contents of the reticulorumen increases its temperature and also increases the temperature of the contents of the abomasum. There is a positive statistically significant dependence between the reticulorumen content temperature and the rectal temperature.Through measurement of the ruminoreticular temperature, it is possible to predict the health status of a cow's stomach in regard to acidosis.

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“…Although the rumen pH has traditionally been used to diagnose SARA, (4) foreign objects in the rumen tend to eventually get transferred to the reticulum because of the rumen movements and then remain there indefinitely. (5) It has been shown that, although the pHs in the rumen and reticulum correlate well, they differ with that in the reticulum exhibiting a smaller pH drop in relation to SARA. (6) However, the reticulum is smaller than the rumen and there is evidence suggesting that this leads to a more stable pH, (7) so the smaller pH drop might be manageable.…”

Section: Introductionmentioning

confidence: 99%

Orally Administrable Wireless Activity and pH Probe for Cattle Reticulum

Andersson¹,

Arai²,

Okada³

2018

Sensors and Materials

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High-energy diets can have a negative impact on the function of the digestive system of cattle. Nevertheless, in modern farming, there are many reasons why reinforced diets are desirable, and it is therefore of interest to be able to continuously monitor their impact. Here, an orally administrable indwelling wireless probe that can track pH and movement is presented. It is designed to maintain its position in the reticulum and to provide measurements for several years without maintenance. An in situ test of the probe reveals that daily variations in pH, as well as changes induced by the diet, can be detected by the probe. It is also shown that the probe can detect reticulum contractions and that probe data can be used to verify that the probe is in its proper location.

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Continuous and Long-Term Measurement of Reticuloruminal pH in Grazing Dairy Cows by an Indwelling and Wireless Data Transmitting Unit

Cited by 29 publications

References 26 publications

Long-term reticuloruminal pH dynamics and markers of liver health in early-lactating cows of various parities fed diets differing in grain processing

Long-term reticuloruminal pH dynamics and markers of liver health in early-lactating cows of various parities fed diets differing in grain processing

Usefulness of Acidity and Temperature of the Rumen and Abomasum in Diagnosing SARA in Dairy Cows after Calving

Orally Administrable Wireless Activity and pH Probe for Cattle Reticulum

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