Effects of Dietary Calcium Levels on Concentration and Solubility of Macro Minerals in the Digestive Tract of Sheep

Yano, Hideo; Matsui, Hirokazu; Kawashima, Ryoji

doi:10.2527/jas1979.484954x

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…Interactions between ruminal concentrations of Ca and Mg and subsequent absorption have been investigated in sheep, demonstrating decreased absorption of Mg as ruminal Ca concentrations increase (Behar, 1975;Care et al, 1984). Whereas the site of Ca absorption in ruminants is primarily thought to be postruminal (Yano et al, 1979;Greene et al, 1983c;Rahnema and Fontenot, 1983), evidence suggests that significant ruminal absorption of Ca can occur in some situations (Greene et al, 1983b;Khorasani et al, 1997) and this could contribute to the antagonistic relationship between absorption of these 2 divalent cations. In a trial conducted in transition dairy cows, Kronqvist et al (2011) fed 1 of 3 levels of Ca prepartum and found that as prepartum dietary Ca was increased, apparent Mg digestibility and postpartum plasma Mg concentrations were decreased.…”

Section: Mineral Statusmentioning

confidence: 99%

“…Baseline blood P concentration was lower in steers fed the dolomite in that study, so it is unclear if this is an effect of source. A possible antagonistic effect of Ca or Mg, depending on the amount and solubility of these minerals in different parts of the gastrointestinal tract, may have been responsible for altering solubility of P. This has been demonstrated in ruminant diets with increasing Ca concentrations (Yano et al, 1979) and potentially could lead to decreased absorption of P due to the formation of chelates.…”

Section: Mineral Statusmentioning

confidence: 99%

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The effect of source of supplemental dietary calcium and magnesium in the peripartum period, and level of dietary magnesium postpartum, on mineral status, performance, and energy metabolites in multiparous Holstein cows

Leno

LaCount

Ryan

et al. 2017

Journal of Dairy Science

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The objective of this study was to determine the effects of feeding different supplemental sources of Ca and Mg in the peripartum period, and different dietary levels of Mg postpartum, on plasma mineral status, performance, and aspects of energy metabolism in transition dairy cows. Multiparous Holstein cows (n = 41) were used in a completely randomized design with a 2 × 2 factorial arrangement of treatments starting at 28 d before expected parturition. Main effects were source assignments (CS = common sources of supplemental Ca and Mg, or MA = a blend of common and commercial mineral sources with supplemental minerals primarily from a commercial Ca-Mg dolomite source; MIN-AD, Papillon Agricultural Company Inc., Easton, MD) beginning at 21 d before due date; cows were further randomized within source treatments to 1 of 2 levels of Mg supplementation (LM = formulated postpartum diet Mg at 0.30% of dry matter (DM), or HM = formulated postpartum diet Mg at 0.45% of DM) beginning within 1 d after parturition. Final treatment groups included the following: common source, low Mg (CS-LM, n = 11); common source, high Mg (CS-HM, n = 11); MIN-AD, low Mg (MA-LM, n = 10); and MIN-AD, high Mg (MA-HM, n = 9). Treatment diets were fed and data collected through 42 d in milk. Postpartum plasma Mg concentrations tended to be higher for cows fed HM and cows fed CS, but no effects were observed on peripartum plasma Ca concentrations. Peripartum plasma P concentrations were higher for cows fed MA. Dry matter intake (DMI) in the prepartum period was higher for cows fed MA (CS = 15.9 vs. MA = 16.8 kg/d) and postpartum DMI was higher in some groups depending on week. Plasma nonesterified fatty acid concentrations were lower for cows fed MA during both the prepartum and postpartum periods. A source by level interaction was observed for postpartum plasma β-hydroxybutyrate (BHB) concentrations such that cows fed CS-LM had numerically higher BHB and cows fed MA-LM had numerically lower BHB (geometric means; CS-LM = 7.9, CS-HM = 6.9, MA-LM = 6.3, and MA-HM = 7.3 mg/dL) than cows fed the other 2 treatments. Higher milk fat yield, milk fat content, and fat- and energy-corrected yield during wk 1 for cows fed MA resulted in source by week interactions for these outcomes. This study demonstrated that varying supplemental Ca and Mg sources and feeding rates had minimal effect on plasma Ca status despite differences in plasma Mg and P concentrations. Effects on DMI and plasma energy metabolites suggest an opportunity for strategic use of mineral sources in the transition period to promote metabolic health.

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Section: Mineral Statusmentioning

confidence: 99%

Section: Mineral Statusmentioning

confidence: 99%

The effect of source of supplemental dietary calcium and magnesium in the peripartum period, and level of dietary magnesium postpartum, on mineral status, performance, and energy metabolites in multiparous Holstein cows

Leno

LaCount

Ryan

et al. 2017

Journal of Dairy Science

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show abstract

“…When elements condition a deficiency in others, they belong to the anti-quality components. Examples are Ca versus phosphorus (P) and zinc (Zn) (Yano, Matsui & Kawashima, 1979 Kreulen & Jager, 1984).…”

Section: Mineral Imbalancesmentioning

confidence: 99%

Lick use by large herbivores: a review of benefits and banes of soil consumption

Kreulen¹

1985

Mammal Review

158

124

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It has been suggested that soil ingestion in herbivores provides an extra source of essential minerals. The present paper is a follow‐up to this theory, intended to show that other soil properties, like buffering capacity and adsorption capacity, could also form major attractive reasons for soil consumption. Notably, lactic acidosis and disorders caused by forage anti‐quality components (secondary compounds etc.) might be prevented or alleviated by selective soil intake. Harmful effects of soil intake are also briefly reviewed.

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“…Although not directly related to saliva production, this ratio implies a potential osmotic imbalance that supplemental sources of inorganic material from licks could alleviate. Supplementing domestic sheep feed with calcium carbonate (CaCOg) has been shown to elevate urinary potassium excretion (Yano et al 1979), reducing the inhibitory effects on sodium. Zeolite and smectite clay minerals (with a strong affinity for potassium; Brady and Weil 1999) have been shown to alleviate potassium imbalances by stimulating potassium excretion .…”

Section: Discussionmentioning

confidence: 99%

Ecological importance of licks to four ungulate species in north-central British Columbia.

Ayotte¹

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Effects of Dietary Calcium Levels on Concentration and Solubility of Macro Minerals in the Digestive Tract of Sheep

Cited by 8 publications

References 20 publications

The effect of source of supplemental dietary calcium and magnesium in the peripartum period, and level of dietary magnesium postpartum, on mineral status, performance, and energy metabolites in multiparous Holstein cows

The effect of source of supplemental dietary calcium and magnesium in the peripartum period, and level of dietary magnesium postpartum, on mineral status, performance, and energy metabolites in multiparous Holstein cows

Lick use by large herbivores: a review of benefits and banes of soil consumption

Ecological importance of licks to four ungulate species in north-central British Columbia.

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