Survey of magnesium content of soils and pastures and incidence of grass tetany in three selected areas of Taranaki

Turner, Michael; Neall, Vincent E.; Wilson, G. F.

doi:10.1080/00288233.1978.10427454

Cited by 7 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liming increased soil calcium and magnesium levels (Table 5) but both were of sufficient concentration in the unlimed soil not to restrict plant growth. The increase in soil magnesium levels may reflect the reduced plant uptake (Fig, 2) caused by the antagonistic effect of high levels of calcium in the limed soil (Turner et al, 1978) and not the result of lime increasing the availablility of magnesium. A higher Troug phosphate level for the limed soils may not necessarily indicate an increase in plant available phosphate but may rather be an anomolous result caused by the Troug method (Grigg, 1965) and the lack of any difference in the Olsen test would suggest that in these soils the availability of phosphate was unaffected by liming.…”

Section: Discussionmentioning

confidence: 99%

Lime and Dairy Production

Na¹

1982

ProNZG

View full text Add to dashboard Cite

In a four year grazing trial with dairy cows the application of 5000 kg lime/ ha (applied in two applications of 2500 kg/ha in winter of the first two years) significantly increased annual pasture production in two of the four years and dairy production in one year. In three of the four years lime significantly increased pasture growth over summer/autumn with concurrent increases in milk production. In the last year of the trial lime had little effect on pasture growth but a relatively large increase in milkfat production resulted. A higher incidence of grass staggers was recorded on the limed farmlets in spring for each of the four years. In the second spring immediately following the second application of lime significant depressions in both pasture and plasma magnesium levels were recorded. By the third spring differences in plasma magnesium levels were negligible but small depressions in herbage magnesium resulting from lime continued to the end of the trial. Lime significantly raised soil pH, Ca and Mg levels but had no effect on either soil K or P. As pH levels of the unlimed paddocks were low (5.2-5.4) in each autumn and soil moisture levels were increased by liming, these factors may suggest possible causes for the seasonality of the pasture response to lime

show abstract

Section: Discussionmentioning

confidence: 99%

Lime and Dairy Production

Na¹

1982

ProNZG

View full text Add to dashboard Cite

show abstract

“…Dairy cows in herds with mean blood Mg concentrations of less than 0.6 mmol/l have shown increases in milk production when supplemented with Mg (Turner and Neall 1978). Low plasma Mg concentrations in cows lead to a reduction in the amounts of Ca able to be mobilised in response to hypocalcaemia (Sansom et al 1983), and may predispose milk fever in cows around parturition.…”

Section: Hypomagnesaemic Tetanymentioning

confidence: 99%

Nutrient Requirements of Domesticated Ruminants

Freer¹,

Dove²,

Nolan³

2007

View full text Add to dashboard Cite

Nutrient Requirements of Domesticated Ruminants draws on the most up-to-date research on the energy, protein, mineral, vitamin and water requirements of beef and dairy cattle, sheep and goats. It defines the responses of animals, in weight change, milk production and wool growth, to quantitative and qualitative changes in their feed supply. It has particular application to grazing animals. Factors affecting the intake of feed are taken into account and recommendations are given according to the production systems being used; for instance, the feed intake of a grazing animal is affected by a larger number of variables than a housed animal. Examples of the estimation of the energy and nutrients required for the different production systems are given, as well as the production expected from predicted feed intakes. The interactions between the grazing animal, the pasture and any supplementary feeds are complex, involving herbage availability, diet selection and substitution. To facilitate the application of these recommendations to particular grazing situations, readers are directed to decision support tools and spreadsheet programs. Nutrient Requirements of Domesticated Ruminants is based on the benchmark publication, Feeding Standards for Australian Livestock: Ruminants, published in 1990 by CSIRO Publishing on behalf of the Standing Committee on Agriculture. It provides comprehensive and useful information for graziers, livestock advisors, veterinarians, feed manufacturers and animal nutrition researchers. The recommendations described are equally applicable to animals in feedlots or drought yards.

show abstract

Central Nervous System Magnesium Deficiency

Langley

Mann²

1991

Arch Intern Med

View full text Add to dashboard Cite

Survey of magnesium content of soils and pastures and incidence of grass tetany in three selected areas of Taranaki

Cited by 7 publications

References 20 publications

Lime and Dairy Production

Lime and Dairy Production

Nutrient Requirements of Domesticated Ruminants

Central Nervous System Magnesium Deficiency

Contact Info

Product

Resources

About