The effect of copper and zinc supplementation on mineral content of mares' milk

Baucus, K. L.; Ralston, Sarah L.; Rich, Gregory A.; Squires, E.L.

doi:10.1016/s0737-0806(89)80053-x

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…The observed effects of dietary TE supplementation on donkey Zn, Fe and Cu milk and serum concentrations are similar to those previously observed in mares whose diet was supplemented with Zn, Fe or Cu at levels higher than recommended (Baucus et al, 1989;Grace et al, 1999;Kavazis et al, 2002). The lack of significant response to the dietary treatment may indicate that dietary concentrations of the investigated elements were sufficient to cover their nutrient requirements in lactating donkeys.…”

Section: Discussionsupporting

confidence: 82%

Essential trace elements in milk and blood serum of lactating donkeys as affected by lactation stage and dietary supplementation with trace elements

Fantuz

Ferraro

Todini

et al. 2013

Animal

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The aim of this trial was to study the concentration of zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), selenium (Se), cobalt (Co) and iodine (I) in milk and blood serum of lactating donkeys, taking into account the effects of lactation stage and dietary supplementation with trace elements. During a 3-month period, 16 clinically healthy lactating donkeys (Martina-Franca-derived population), randomly divided into two homogeneous groups (control (CTL) and trace elements (TE)), were used to provide milk and blood samples at 2-week intervals. Donkeys in both groups had continuous access to meadow hay and were fed 2.5 kg of mixed feed daily, divided into two meals. The mixed feed for the TE group had the same ingredients as the CTL, but was supplemented with a commercial premix providing 163 mg Zn, 185 mg Fe, 36 mg Cu, 216 mg Mn, 0.67 mg Se, 2.78 mg Co and 3.20 mg I/kg mixed feed. The concentrations of Zn, Fe, Cu, Mn, Se, Co and I were measured in feeds, milk and blood serum by inductively coupled plasma-MS. Data were processed by ANOVA for repeated measures. The milk concentrations of all the investigated elements were not significantly affected by the dietary supplementation with TE. Serum concentrations of Zn, Fe, Cu Mn and Se were not affected by dietary treatment, but TE-supplemented donkeys showed significantly higher concentrations of serum Co (1.34 v. 0.69 mg/l) and I (24.42 v. 21.43 mg/l) than unsupplemented donkeys. The effect of lactation stage was significant for all the investigated elements in milk and blood serum, except for serum manganese. A clear negative trend during lactation was observed for milk Cu and Se concentrations (238%), whereas that of Mn tended to increase. The serum Cu concentration was generally constant and that of Co tended to increase. If compared with data reported in the literature for human milk, donkey milk showed similarities for Zn, Mn, Co and I. Furthermore, this study indicated that, in the current experimental conditions, the mineral profile of donkey milk was not dependent on dietary TE supply.

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Section: Discussionsupporting

confidence: 82%

Essential trace elements in milk and blood serum of lactating donkeys as affected by lactation stage and dietary supplementation with trace elements

Fantuz

Ferraro

Todini

et al. 2013

Animal

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“…The concentrations of mineral element in mares' milk are similar to that of those in ewes and cows, 4,10,12,13 except that Zn concentrations are higher in ewes' milk (2.2 vs 6.9 mg/kg) and the Cu concentrations are lower in cows' milk (0.2 vs 0.1 mg/kg) than in mares' milk. During the synthesis of milk the transport of some mineral elements (Ca, P, Mg, K a Assumed daily milk production 20 kg/day.…”

Section: Discussionsupporting

confidence: 52%

Concentrations of macro‐ and micro‐elements in the milk of pasture‐fed Thoroughbred mares

Grace

Firth

et al. 1999

Aust Veterinary J

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Section: Nutrient Requirements Of Pre‐weaned Foalsmentioning

confidence: 99%

“…The effect of dietary micromineral intake on milk composition appears to be minimal. A number of studies have demonstrated that milk and foal blood copper concentrations are not influenced by mare dietary copper intake (Baucus et al 1987). Similarly to copper, dietary intake of zinc had no effect on mare's serum and milk or foal serum zinc concentrations (Breedveld et al 1987).…”

Section: Unique Nutritional Qualities Of Colostrum and Milkmentioning

confidence: 99%

Feeding the foal for immediate and long‐term health

Bečvářová

Buechner-Maxwell

2012

Equine Veterinary Journal

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SummaryThe nutrition and nutritional status of the mare, as well as foal's nutrient intake from colostrum, milk and creep feed, are critical factors that are known to influence the growth period of the foal. Long-term effects of mare and foal nutrition are not well recognised or understood in the horse but may have the greatest impact on the animal's health and use when mature. Both under-and overfeeding can negatively influence important characteristics such as bone development and neurological function. The risk of developing debilitating diseases such as metabolic syndrome may also be increased by mare, fetal and early foal feeding, supporting the importance of providing a balanced diet to mare and foal throughout gestation and beyond.

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The effect of copper and zinc supplementation on mineral content of mares' milk

Cited by 9 publications

References 5 publications

Essential trace elements in milk and blood serum of lactating donkeys as affected by lactation stage and dietary supplementation with trace elements

Essential trace elements in milk and blood serum of lactating donkeys as affected by lactation stage and dietary supplementation with trace elements

Concentrations of macro‐ and micro‐elements in the milk of pasture‐fed Thoroughbred mares

Feeding the foal for immediate and long‐term health

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