Statistical evaluation of early- and mid-lactation dairy cow responses to dietary sodium bicarbonate addition

Hu, W.; Murphy, Michael R.

doi:10.1016/j.anifeedsci.2004.12.005

Cited by 50 publications

(54 citation statements)

References 33 publications

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“…These findings are in accordance with previous studies that compared rations based on grass silages with and without buffer and found no advantage to adding buffer (Khorasani and Kennelly, 2001;Mooney and Allen, 2007;Doepel and Hayirli, 2011). Moreover, analyses of 27 experiments conducted from 1980 to 1999 showed that buffer addition to rations that contained several silages (excluding corn silage) had no positive effect on rumen pH, milk yield or milk composition (Hu and Murphy, 2005). This finding encourage performance studies with lactating cows to determine the need for buffer in commercial TMRs based on wheat silage.…”

supporting

confidence: 82%

“…This buffer often increased rumen pH in maize silage-based diets (Hu and Murphy, 2005). However, studies of buffer addition in TMRs based on other grasses (not including wheat) and legumes demonstrated a lack of effect on milk fat, milk yield, and rumen pH (Hu and Murphy, 2005). The need for sodium bicarbonate as a buffer for TMRs based on 30% wheat silage as the sole roughage source is unknown.…”

Section: Introductionmentioning

confidence: 99%

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Effect of wheat hay particle size and replacement of wheat hay with wheat silage on rumen pH, rumination and digestibility in ruminally cannulated non-lactating cows

Shaani

Nikbachat

Yosef

et al. 2017

Animal

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This study examined the effects on intake, diurnal rumen pH changes, rumination and digestibility of feeding ruminally cannulated non-lactating cows in a Latin square design (four cows × four periods) with four total mixed rations (TMRs) typical for lactating cows. TMRs were based on: long wheat hay or short wheat hay, wheat silage or wheat silage + 1.5% NaHCO 3 buffer, as the sole roughage source (30% of TMR dry matter (DM)). The level of physically effective NDF remaining above the 8 mm screen (peNDF) was similar in the long hay and silage-based TMRs (9.45% to 9.64% of DM) and lower in the short hay TMR (7.47% of DM). The four TMRs were offered individually at 95% of ad libitum intake to avoid orts within 24 h. Cows fed long hay consumed less DM than the short hay and silage groups (9.6 v. 10.5 and 10.8 kg/day, respectively) and sorted against large hay particles at 12 h post-feeding. Under the limitations of this study (non-lactating cows fed at restricted intake) short hay TMR prevented sorting within 12 h post-feeding, encouraged rumination per kg peNDF ingested, and had higher average rumen pH (6.24), whereas preventing sub acute ruminal acidosis (SARA, defined as pH < 5.8 for at least 5 h/day). In contrast, the long hay and silage-based groups were under SARA. In vitro methane production of rumen fluid was higher in the hay-fed cows than in their silage-fed counterparts, and in all treatments lower at 1 h pre-feeding than at 6 h post-feeding. In vivo DM and NDF digestibility were similar for the short hay and silage TMRs, and higher than those of the long hay TMR. Under the conditions of this study, addition of 1.5% buffer to the wheat silage TMR had no effect on intake, rumen pH, creation of SARA and digestibility.

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supporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Effect of wheat hay particle size and replacement of wheat hay with wheat silage on rumen pH, rumination and digestibility in ruminally cannulated non-lactating cows

Shaani

Nikbachat

Yosef

et al. 2017

Animal

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“…Moreover, in this study, changes were observed when comparing the different experimental groups, such as elevation of plasma bicarbonate and BE, which indicates more efficient buffer mechanisms with the use of sodium bicarbonate for the blood pH control and the restoration of the hemodynamic balance. Until now, studies with bicarbonate had not shown efficacy in the prevention of experimentally induced acidosis (Erdman 1988), being used in the treatment of acute (Aslan et al 1995, Kezar & Chuch 1979 or subacute illness (Hu & Murphy 2005). However, this study provides results indicating a beneficial effect of bicarbonate on acid-base imbalances caused by acidosis and by prolonged fasting.…”

Section: Discussioncontrasting

confidence: 47%

Sodium bicarbonate as prevention of metabolic acidosis in sheep submitted to experimental ruminal acidosis

et al. 2014

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Pesq. Vet. Bras. 34(9):822-826, setembro 2014 822 RESUMO.-[Bicarbonato de sódio como preventivo da acidose metabólica em ovinos submetidos à acidose ruminal experimental.] O objetivo deste estudo foi avaliar o efeito preventivo do bicarbonato de sódio sobre a acidose sistêmica em decorrência da acidose ruminal, a qual foi induzida pelo fornecimento de concentrado após jejum prolongado. Foram utilizados 14 ovinos, divididos em três grupos experimentais: grupo controle (Cg), contendo quatro ovinos, submetidos a jejum sem desenvolvimento de acidose ruminal; grupo não tratado (NTg), contendo cinco ovinos submetidos a acidose ruminal sem tratamento preventivo; e grupo tratado (Tg), contendo cinco ovinos, submetidos a acidose ruminal e tratados preventivamente com bicarbonato de sódio. Foram realizadas avaliações do pH ruminal e hemogasometria arterial, durante 48 horas após o fornecimento do concentrado. Houve redução do pH ruminal em todos os grupos, sendo que o Cg apresentou a redução apenas às 24 horas. Notou-se redução do pH arterial, bicarbonato e excesso de base em todos os grupos, indicando acidose metabólica sistêmica; no entanto, o NTg apresentou o quadro mais grave. Conclui-se que o bicarbonato de sódio possui efeito preventivo da acidose metabólica sistêmica, reduzindo a sua gravidade em ovinos submetidos à acidose ruminal. The aim of this study was to evaluate the preventive effect of sodium bicarbonate on systemic acidosis due to ruminal acidosis, which was induced by ingestion of concentrate after prolonged fasting. Fourteen sheep were divided into three experimental groups: control group (Cg), with four sheep, submitted to fasting without development of ruminal acidosis; no-treated group (NTg), with five sheep with rumen acidosis without preventive treatment; and treated group (Tg), with five sheep with rumen acidosis and preventively treated with sodium bicarbonate. Assessments of ruminal pH and arterial hemogasometry were performed for 48 hours after ingestion of the concentrate. There was a reduction in the ruminal pH in all groups, whereas the Cg showed a reduction only after 24 hours. A reduction in the arterial pH, bicarbonate and base excess in all groups was also noted, indicating systemic metabolic acidosis, but the NTg presented the greatest alteration. It is concluded that sodium bicarbonate prevents systemic metabolic acidosis, reducing its severity in sheep subjected to ruminal acidosis.INDEX TERMS: Sodium bicarbonate, lactic ruminal acidosis, systemic metabolic acidosis, buffering, hemogasometry, sheep.

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“…However, these positive effects seem minimal and tend to decline with time on feed (Aldai et al, 2010c). In addition, responses to buffers appear to depend on factors such as buffer source, dosage, acidity, feeding method, buffering capacity of diets, and the metabolic acid load of the animal (Cabrita, Vale, Bessa, Dewhurst, & Fonseca, 2009;Hu & Murphy, 2005).…”

Section: Addition Of Buffersmentioning

confidence: 90%

The trans-octadecenoic fatty acid profile of beef: Implications for global food and nutrition security

Mapiye

Vahmani

Mlambo

et al. 2015

Food Research International

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Statistical evaluation of early- and mid-lactation dairy cow responses to dietary sodium bicarbonate addition

Cited by 50 publications

References 33 publications

Effect of wheat hay particle size and replacement of wheat hay with wheat silage on rumen pH, rumination and digestibility in ruminally cannulated non-lactating cows

Effect of wheat hay particle size and replacement of wheat hay with wheat silage on rumen pH, rumination and digestibility in ruminally cannulated non-lactating cows

Sodium bicarbonate as prevention of metabolic acidosis in sheep submitted to experimental ruminal acidosis

The trans-octadecenoic fatty acid profile of beef: Implications for global food and nutrition security

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