Magnesium Deficiency in the Laying Hen

Cox, Allan C.; Sell, J. L.

doi:10.3382/ps.0460675

Cited by 11 publications

(5 citation statements)

References 10 publications

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“…or less Mg confirming previous findings of Cox and Sell (1967) and Sell et al (1967). or less Mg confirming previous findings of Cox and Sell (1967) and Sell et al (1967).…”

Section: Resultssupporting

confidence: 90%

Magnesium Nutriture of the Hen: Influence on Retention of Magnesium, Calcium, and Nitrogen, and on Ration Metabolizable Energy Value

Sell

1969

Poultry Science

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1437 dead sperm ratios were not reflected in the fertility experiment. SUMMARY Eosin nigrosin was estimated to be a more satisfactory stain than bromphenol blue-nigrosin or Congo red-nigrosin for differentiating between the degrees of viability of sperm on the basis of trials with chicken semen, using a total of 72 counts each comprised of 100 sperm.The proportion of stained turkey sperm, using eosin nigrosin on 144 counts each comprised of 100 sperm, was increased during four hours of storage. A collection temperature of 30° C. produced a lower proportion of stained sperm than 15°C. while fewer stained sperm were encountered with a holding temperature of 15°C. as opposed to 30°C. during four hours of storage. However, the use of the same collection and storage temperatures in a fertility experiment with 84 turkey females revealed a significant drop in fertility only in the comparison of semen, stored for five hours at 15°C. and 30°C,

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“…or less Mg confirming previous findings of Cox and Sell (1967) and Sell et al (1967). or less Mg confirming previous findings of Cox and Sell (1967) and Sell et al (1967).…”

Section: Resultssupporting

confidence: 90%

Magnesium Nutriture of the Hen: Influence on Retention of Magnesium, Calcium, and Nitrogen, and on Ration Metabolizable Energy Value

Sell

1969

Poultry Science

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“…It is the fourth most abundant cation in living organisms (Wolf and Cittadini, 2003), second to potassium in abundance in the soft tissues (Suttle, 2010) and to calcium (Ca) in bone tissues (Morii, 2007a). Mg deficiency may lead to serious biochemical and symptomatic changes (Coudray et al, 2005) and symptoms of deficiency have been described in growing chicks by Almquist (1942), Bird (1949), and Gardiner et al (1960); in growing ducks by Van Reen and Pearson (1953) and in laying hens by Cox and Sell (1967). Clinically, as observed by these authors, Mg deficiency in growing poultry is characterised by poor growth and feathering, decreased muscle tone, incoordination, squatting, fine palpable tremors, convulsive attacks, coma, and death; in laying hens, symptoms include reduced egg production, hypomagnesemia, decreased feed consumption, nervous tremors, and seizures.…”

Section: Introductionmentioning

confidence: 99%

A review of the role of magnesium in poultry nutrition

Shastak

Rodehutscord

2015

World's Poultry Science Journal

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Magnesium has essential functions in cellular metabolism and bone development. Its actions are closely linked to calcium and phosphorus, making the achievement of the right proportion of these elements in diets an important issue in poultry nutrition. The magnesium requirement of poultry has rarely been studied and most studies conducted are more than 35 years old. Despite the fact that magnesium is adequately present in most plant-based diets, supplemental magnesium may positively affect poultry meat quality and body weight at certain developmental stages. However, excessive dietary magnesium could influence calcium and phosphorus availability and metabolism through different mechanisms. Understanding the effects of supplemental magnesium on the availability and metabolism of other dietary constituents and vice versa is important for formulating balanced diets and achieving maximal performance in poultry. Here we review this complex, insufficiently explored issue.

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“…In laying hens, a normocalcemic diet deficient in Mg led to hypocalcemia and hypomagnesemia. Only supplementation of both electrolytes led to normalization (Cox and Sell, 1967). In Chinese softshell turtles (Pelodiscus sinensis), animals fed with a Mg richer diet developed a stronger carapace (Chen et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

The effects of sex, season, and natural sunlight on plasma vitamin D3 levels in two chelonian species (Testudo hermanni, Trachemys scripta) and their interaction with calcium, phosphate, and magnesium as associated plasma compounds

Geisler,

Leineweber,

Pees

et al. 2023

Front. Amphib. Reptile Sci.

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Species specific physiology, seasonal changes, sex, and husbandry factors all influence the blood chemistry of chelonians, including vitamin D3, calcium, phosphate and magnesium levels. Problems in the supply of many of these are commonly seen in captive reptiles. The goal of this study was to measure vitamin D3, calcium, phosphate and magnesium in plasma from captive, healthy, adult Hermann’s tortoises (Testudo hermanni) and pond sliders (Trachemys scripta). Samples were categorized and compared based on species, sex, season, and access to sunlight as a central husbandry element. Blood samples of 522 Hermann’s tortoises and 188 pond sliders, taken from March to September 2022, were included in the study. New reference intervals for vitamin D3, calcium, phosphate and magnesium were established, with specific reference intervals calculated for each species, sex, and season in those cases in which significant differences were found based on these factors. For the calculation of reference intervals for vitamin D3 the factors species, season and access to sunlight were considered. Vitamin D3 levels differed by access to sunlight in some seasons depending on the species and were generally higher in Hermann’s tortoises. Plasma vitamin D3 levels did not correlate with calcium, phosphorus or magnesium levels on a larger scale in either species. Calcium, phosphate, and magnesium were higher in females than in males of both species, and magnesium was higher in Hermann’s tortoises than in pond sliders. Our results can be helpful in a more specific interpretation of blood results and support previous findings that direct sunlight is an important factor in chelonian health. More studies are needed to better understand the role of other hormonal influence on the vitamin D3, calcium, phosphate and magnesium metabolism in chelonians.

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Magnesium Deficiency in the Laying Hen

Cited by 11 publications

References 10 publications

Magnesium Nutriture of the Hen: Influence on Retention of Magnesium, Calcium, and Nitrogen, and on Ration Metabolizable Energy Value

Magnesium Nutriture of the Hen: Influence on Retention of Magnesium, Calcium, and Nitrogen, and on Ration Metabolizable Energy Value

A review of the role of magnesium in poultry nutrition

The effects of sex, season, and natural sunlight on plasma vitamin D3 levels in two chelonian species (Testudo hermanni, Trachemys scripta) and their interaction with calcium, phosphate, and magnesium as associated plasma compounds

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