Effect of a copper, cobalt and selenium soluble glass bolus given to grazing sheep

Kendall, N.R.; Mackenzie, A.M.; Telfer, S.B.

doi:10.1016/s0301-6226(00)00210-4

Cited by 24 publications

(15 citation statements)

References 10 publications

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“…Telfer et al (1984) and Kendall et al (2001b) reported that this type of bolus gave excellent results in fi eld trails and has been previously shown to supply copper, cobalt and selenium in extensively grazed cattle and sheep for up to 345-days.…”

Section: Discussionmentioning

confidence: 96%

The effect of a copper, selenium and cobalt soluble glass bolus on the trace element status of Bactrian camels

Lin¹,

Xiong²

2007

J. Anim. Feed Sci.

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The trial was carred out to evaluate the performance of a soluble glass copper, cobalt and selenium bolus for maintaining adequate levels of the three trace elements in Bactrian camels. The sixty Bactrian camels, 30 females and 30 castrated males, selected for the study were 2-13 years of age in Alashanyouqi County of Inner Mongolia and were allocated to two groups by restricted randomization. One group each had two 100 g soluble glass boluses (manufactured by Pilkington Controlles Release Systems Ltd., UK) administered with the other group not receiving a bolus to act as a control. Blood samples were taken by jugular venipuncture at days 0 (prior to bolus administration) and at days 30, 60 and 90. The samples were analysed for copper status (serum caeruloplasmin activity and copper concentration), cobalt status (serum vitamin B 12 concentration and cobalt concentration), selenium status (erythrocyte glutathione peroxidase activity and selenium concentration) and serum zinc concentration. The erythrocyte glutathione peroxidase activities, ceruloplasmin activities and vitamin B 12 concentrations in serum were signifi cantly increased for the bolused Bactrian camels (P<0.01) on all sampling days. The bolused camels had a signifi cantly higher selenium and copper status in serum than the control Bactrian camels throughout the trial (P<0.01). The selenium and copper status of all the Bactrian camels was in the normal range. The selenium and copper status indicators indicate an adequate selenium and copper concentrations. There were no signifi cant differences in zinc and cobalt concentrations between the bolused camels and the controls.

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Section: Discussionmentioning

confidence: 96%

The effect of a copper, selenium and cobalt soluble glass bolus on the trace element status of Bactrian camels

Lin¹,

Xiong²

2007

J. Anim. Feed Sci.

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“…Trace element biology relates to a number of various chemical elements that occur naturally in very small amounts in organisms and are essential for many physiological and biochemical processes [6]. In addition to the active research in the areas of pharmaceutics and medical devices, there are examples of the application of phosphate glasses in the agriculture and veterinary fields [7]. The trace elements such as copper, cobalt or selenium have been added to PBG to obtain a soluble glass bolus for the veterinary application.…”

Section: Phosphate-based Glassesmentioning

confidence: 99%

Phosphate glass fibres with therapeutic ions release capability – a review

Łapa

Cresswell

Jackson

et al. 2019

Advances in Applied Ceramics

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Phosphate-based glasses (PBG) have low melting temperatures and can be obtained by meltquenching and sol-gel methods. The most significant characteristic of PBG is their ability to dissolve completely in aqueous solution within different timeframes. This solubility can reduce the need for revision surgeries and makes PBG well-suited for soft tissue regeneration. Phosphate glass fibres (PGF) due to their geometry and volume-surface area ratio are the subject of a growing number of studies on resorbable composites. Medical applications include bone fixation devices, nerve tissue scaffolds and wound healing. PBG can be doped with various ions to enhance their biological, chemical and structural properties allowing the preparation of fibres with designed properties and with the ability to release biologically active ions upon degradation. The aim of this review is to look in detail at the influence of different dopants on PGF behaviour, both at a structural and biological level.

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“…Ewes may be supplemented with 10 g at 3-4 weeks prior to mating, while cows should receive 2 × 30 g during early gestation [32]. Soluble glass boluses containing I [36] and other elements [37, 38] have been developed in the United Kingdom, but are not available for use in New Zealand.…”

Section: Supplements Providing Long-term Efficacymentioning

confidence: 99%

Trace Element Supplementation of Livestock in New Zealand: Meeting the Challenges of Free-Range Grazing Systems

Grace

Knowles

2012

Veterinary Medicine International

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Managing the mineral nutrition of free-range grazing livestock can be challenging. On farms where grazing animals are infrequently yarded, there are limited opportunities to administer trace element supplements via feeds and concentrates. In New Zealand, where the majority of sheep, cattle, and deer graze pasture year round, inadequate intake of cobalt, copper, iodine and selenium is prevalent. Scientists and farmers have developed efficient strategies to monitor and treat these dietary deficiencies. Supplementation methods suited to grazing livestock include long-acting injections, slow-release intraruminal boluses, trace element-amended fertilisers, and reticulated water supplies on dairy farms.

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Effect of a copper, cobalt and selenium soluble glass bolus given to grazing sheep

Cited by 24 publications

References 10 publications

The effect of a copper, selenium and cobalt soluble glass bolus on the trace element status of Bactrian camels

The effect of a copper, selenium and cobalt soluble glass bolus on the trace element status of Bactrian camels

Phosphate glass fibres with therapeutic ions release capability – a review

Trace Element Supplementation of Livestock in New Zealand: Meeting the Challenges of Free-Range Grazing Systems

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