Continuous and long term measurement of reticuloruminal pH in crossbreed dairy cows in Brazil by an indwelling and wireless data transmitting unit

Gasteiner, J.; Guggenberger, T.; Varga, L.; Ollhoff, Rüdiger Daniel

doi:10.1590/1678-7795

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…A test performed in Brazil to evaluate the ruminal temperature device employed in the study, for Holstein Friesian dairy cows producing from 30 to 48 L day -1 of milk, obtained ruminal temperatures between 38.8-39.1°C and drinking events from 6.4-9.5 times per day. The cow that displayed more drinking events was not healthy and exhibited left displacement of the abomasum (GASTEINER et al, 2015). In the present assessment, the frequency of drinking events was lower (3 and 3.3 times day -1 ) when compared with the results reported by Gasteiner et al (2015).…”

Section: Controlcontrasting

confidence: 80%

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Performance of Nellore females in tropical pastures during the rainy season when supplemented with molasses blocks

Lopes

Lima

Zilião

et al. 2019

SCA

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The objective of this study was to measure the effect of supplementation with molasses blocks compared with conventional mineral supplementation (with specific formulations for the rainy and dry season) in 92 7-month-old Nellore heifers (Experiment 1) and 40 primiparous 31-month-old Nellore cows (Experiment 2) in Marandu grazing areas. The following measurements were obtained: weight, supplement intake, blood urea and glucose in heifers (Experiment 1), supplement intake, cow weight, body score, calf weight and ruminal temperature and drinking events in primiparous females (Experiment 2). The average molasses block intake was 242 g day-1 per heifer, with an average weight gain of 0.290 kg day-1; the heifers who consumed the molasses blocks were heavier during the rainy season (P < 0.05; Experiment 1). In Experiment 2, molasses block intake varied from 77 to 821 g day-1 per primiparous female, and the average intake in the control group was between 100 and 370 g day-1. The primiparous females given molasses blocks displayed lower weight loss due to calving (P < 0.05) and retained higher body scores at 150 days postpartum (P < 0.05). Ruminal temperature (P < 0.05) and drinking events (P < 0.05) were higher in primiparous Nellore females given molasses blocks. Overall, molasses blocks effectively increased Nellore female performance during the rainy season in Marandu grass pastures.

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Section: Controlcontrasting

confidence: 80%

“…The cow that displayed more drinking events was not healthy and exhibited left displacement of the abomasum (GASTEINER et al, 2015). In the present assessment, the frequency of drinking events was lower (3 and 3.3 times day -1 ) when compared with the results reported by Gasteiner et al (2015).…”

Section: Controlcontrasting

confidence: 80%

Performance of Nellore females in tropical pastures during the rainy season when supplemented with molasses blocks

Lopes

Lima

Zilião

et al. 2019

SCA

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“…The ruminal pH pattern of a cow fed in the classic system (twice a day) shows a two-phase curve with a pH decrease after feeding. The pH reaches its lowest value 2 to 4 h after feeding and increases continuously until the next feeding (Gasteiner et al, 2015). The postfeeding pH drop is the consequence of the sudden abundance of nutrients, as the digestive activity of the microbiota produces acidity during fermentation and saliva is not produced in sufficient quantities (normally 200-250 l/day) to compensate for that acidity (Gasteiner et al, 2009).…”

Section: Effect Of Feeding On Daily Patterns Of Ruminal Phmentioning

confidence: 99%

“…Atypical meal patterns (Oetzel, 2007), problems with feed preparation (Leonardi and Armentano, 2003) or with the feeding time-schedule (Kleen et al, 2003) can increase the risk of SARA. Component feeding puts cows at a greater risk of developing SARA than TMR feeding, because animals are at risk of overconsuming concentrates and an increased diurnal variation in rumen pH (Stone, 2004;Gasteiner et al, 2015).…”

Section: Prevalence and Risk Factors Of Saramentioning

confidence: 99%

Subacute ruminal acidosis in dairy cows - physiological background, risk factors and diagnostic methods

et al. 2020

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According to the latest studies, the prevalence of subacute ruminal acidosis (SARA) is around 20% in early and mid- lactation dairy cows, generating annual losses in the United States of approximately USD 500 million to 1 billion. The diagnosis of SARA is still difficult due to lack of pathognomonic clues and the delayed appearance of certain clinical signs. Therefore, SARA remains neglected or even unrecognized in many dairy herds. SARA is characterized by daily episodes of low ruminal pH, when the pH remains in the range of 5.2 to 6 for a prolonged period due to the accumulation of short-chain fatty acids and insufficient rumen buffering. The causes of SARA are related to high-grain diets, such as feeding excessive amounts of non-structural carbohydrates and highly fermentable forages, and insufficient dietary coarse fibre. SARA is associated with the inflammation of several organs and tissues in dairy cows, and its main long-term health and economic consequences are the fluctuation of feed intake, reduced fibre digestion, depression of milk yield and milk fat content, gastrointestinal damage, diarrhoea, laminitis, liver abscesses, and lameness. The aim of this review is to summarize the information available on the physiological aspects, risk factors, prevalence and possible indicators of SARA in dairy cattle. Basedon the existing literature, rumenocentesis and the use of an oral stomach tube are reliable field techniques to detect SARA. Nowadays, improved field techniques allowing the continuous measurement of reticuloruminal pH are also available for better diagnosis of SARA. Wireless indwelling pH probes may become important tools for the continuous measurement of ruminal pH in the coming years.

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Compact rumen pH sensor: Aiming at the realization of livestock electronic management and fine forage strategy

Zhang

Nogami

et al. 2017

2017 International Conference on Electronics Packaging (ICEP)

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Continuous and long term measurement of reticuloruminal pH in crossbreed dairy cows in Brazil by an indwelling and wireless data transmitting unit

Abstract: Communication

Cited by 3 publications

References 7 publications

Performance of Nellore females in tropical pastures during the rainy season when supplemented with molasses blocks

Performance of Nellore females in tropical pastures during the rainy season when supplemented with molasses blocks

Subacute ruminal acidosis in dairy cows - physiological background, risk factors and diagnostic methods

Compact rumen pH sensor: Aiming at the realization of livestock electronic management and fine forage strategy

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