Dental Lesions in Cattle and Sheep Due to Industrial Pollution Caused by Coal Combustion

Riet-Correa, Franklin; Méndez, María; Schild, Ana Lúcia; Oliveira, João Arthur dos Santos de; Zenebon, Odair

doi:10.1016/s0166-1116(08)71835-1

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…Fluoride has been a component of complex mixtures of environmental contamination, and few researchers have identified fluorosis as the cause of dental lesions when cattle and sheep were exposed to industrial pollutants such as effluents from fossil fuel plants or industrial coal pollution (9,28,45). This is the first report of fluorosis in wild rodents.…”

Section: The Microscopic Lesionsmentioning

confidence: 96%

Fluorosis in a Wild Cotton Rat (Sigmodon hispidus) Population Inhabiting a Petrochemical Waste Site

Paranjpe

Chandra

Qualls³

et al. 1994

Toxicol Pathol

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We have developed an in situ mammalian model for evaluating environmental contamination using wild cotton rats. In a series of experiments, 200 male cotton rats were captured during 4 collection periods (spring 1991 = 35; fall 1991 = 60; spring 1992 = 53; fall 1992 = 52). A total of 103 of these cotton rats were captured from control sites, and the remaining 97 were captured from an abandoned oil refinery. All sites were located in the vicinity of Cyril, Oklahoma. There were alterations in the incisors of cotton rats captured from the refinery site. Normal color of cotton rat incisors is deep yellow-orange, which is imparted by a pigment normally produced by ameloblasts. Grossly, the upper incisors of 37 of 97 rats and lower incisors of 54 of 97 rats were affected. The affected incisors were white, chalky, and thin with striations and erosions of the enamel. Microscopic examination revealed that there were dysplastic and necrotic changes in the ameloblasts. The bone fluoride levels were significantly higher in rats captured from the refinery as compared to the rats captured from the control sites.

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Section: The Microscopic Lesionsmentioning

confidence: 96%

Fluorosis in a Wild Cotton Rat (Sigmodon hispidus) Population Inhabiting a Petrochemical Waste Site

Paranjpe

Chandra

Qualls³

et al. 1994

Toxicol Pathol

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“…Several studies have examined how silica affects herbivores, most notably its effect on digestion (Van Soest 1982), tooth wear (Riet-Correa et al 1986), and as a cause of urinary calculi (Emerick 1987(Emerick , 1988. Silica is an indigestible structural component of most grasses (Van Soest and Jones 1968).…”

Section: Silicamentioning

confidence: 99%

Structural anti-quality characteristics of range and pasture plants

Laca¹,

Shipley²,

Reid³

2001

REM

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Structural anti-quality characteristics are physical plant traits that reduce the performance and productivity of herbivores and quality of their agricultural products. Most structural anti-quality characteristics of plants affect the rate at which herbivores gather and ingest forages, reducing the total amount of food obtained or increasing the time necessary to obtain food. Structural anti-quality can substantially influence searching time (e.g., plant crypticity, distribution), cropping time (e.g., plant fibrousness, tensile and shear strength), and bite size (e.g., plant canopy structure, spinescence). Plant structural characteristics can also reduce digestion (e.g., silica), cause injury (e.g., spines, awns, burrs, calluses), or reduce the quality of animal products, such as wool (e.g., propagules). The effects of structural antiquality characteristics depend on the morphology of the herbivore, especially its size, the morphology of the focal plant, and their context within the habitat. Integrated grazing management plans should consider options to reduce the negative effects of structural anti-quality. Carefully selecting appropriate livestock species with previous experience, and the appropriate season of grazing can minimize anti-quality on rangelands. Because structural anti-quality may actually promote sustainability of grazing systems by preventing severe defoliation, or by providing refuges for highly desirable forages, it may not be desirable to completely counteract their effects.

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“…High silica content of plant tissues can also be detrimental to herbivores by promoting rapid tooth wear (Baker et al 1959, Riet-Correa et al 1986). The productive life span of cattle, particularly reproductive beef and dairy cows, can extend beyond 7-8 years.…”

Section: Silicamentioning

confidence: 99%

Structural Anti-Quality Characteristics of Range and Pasture Plants

Laca¹,

Shipley²,

Reid³

2001

Journal of Range Management

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Structural anti-quality characteristics are physical plant traits that reduce the performance and productivity of herbivores and quality of their agricultural products. Most structural anti-quality characteristics of plants affect the rate at which herbivores gather and ingest forages, reducing the total amount of food obtained or increasing the time necessary to obtain food. Structural anti-quality can substantially influence searching time (e.g., plant crypticity, distribution), cropping time (e.g., plant fibrousness, tensile and shear strength ), and bite size (e.g., plant canopy structure, spinescence). Plant structural characteristics can also reduce digestion (e.g., silica), cause injury (e.g., spines, awns, burrs, calluses), or reduce the quality of animal products, such as wool (e.g., propagules). The effects of structural antiquality characteristics depend on the morphology of the herbivore, especially its size, the morphology of the focal plant, and their context within the habitat. Integrated grazing management plans should consider options to reduce the negative effects of structural anti-quality. Carefully selecting appropriate livestock species with previous experience, and the appropriate season of grazing can minimize anti-quality on rangelands. Because structural anti-quality may actually promote sustainability of grazing systems by preventing severe defoliation, or by providing refuges for highly desirable forages, it may not be desirable to completely counteract their effects.

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Dental Lesions in Cattle and Sheep Due to Industrial Pollution Caused by Coal Combustion

Cited by 5 publications

References 3 publications

Fluorosis in a Wild Cotton Rat (Sigmodon hispidus) Population Inhabiting a Petrochemical Waste Site

Fluorosis in a Wild Cotton Rat (Sigmodon hispidus) Population Inhabiting a Petrochemical Waste Site

Structural anti-quality characteristics of range and pasture plants

Structural Anti-Quality Characteristics of Range and Pasture Plants

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