Experimental copper deficiency in the calf

Suttle, N. F.; Angus, K.W.

doi:10.1016/0021-9975(76)90068-2

Cited by 47 publications

(22 citation statements)

References 21 publications

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“…Problems occur because Cu is important for the formation or for incorporation into disulfide groups that provide cross-linkages or bonding of keratin (McDowell, 1992). There is a decrease in growth and appearance of wool (Suttle and Angus, 1976). Tensil strength and elastin production are decreased because of a decrease in lysyl oxidase (Underwood, 1981 ).…”

Section: Cu Deficiency and Toxicitymentioning

confidence: 99%

Effects of copper source and concentration on copper status and immune function in growing and finishing steers

Dorton

Engle

Hamar

et al. 2003

Animal Feed Science and Technology

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Section: Cu Deficiency and Toxicitymentioning

confidence: 99%

Effects of copper source and concentration on copper status and immune function in growing and finishing steers

Dorton

Engle

Hamar

et al. 2003

Animal Feed Science and Technology

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“…Growth and physical appearance of wool and hair is affected with inadequate copper availability. Sheep deficient in copper fail to impart a crimp in the wool fiber, which results in an almost straight hair-like fiber called stingy or steely wool [4,6]. Low fertility in cattle grazing Cu-deficient pastures, associated with delayed or depressed estrus, occurs in several regions of the world, and infertility has been reported in experimental Cu deficiency ewes [4].Copper imbalances in ruminants have been reported in many regions of the world [4].…”

Section: Introductionmentioning

confidence: 99%

Studies on the Transfer of Copper from Soil to Pastures at Different Sampling Periods: A Case Study of a Semiarid Region (Sargodha) in Pakistan

Khan

Ashraf

Al‐Qurainy

et al. 2010

Biol Trace Elem Res

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The present investigation was carried out to assess the transfer of copper element from the soil to forage plants consumed by the ruminants in two different pastures at the Livestock Experimental Station at Sargodha, Punjab, Pakistan. Soil and forage samples were collected periodically from two different pastures and analyzed after wet digestion. The survey of copper flow from forage from both pastures in the grazing period exhibited a consistent pattern of decrease from sampling periods 1 to 4 across all the sampling periods. In the legumes and grass pastures, it was decreased regularly and reduced up to 50% to that at the beginning across all the samplings. The copper concentration was higher in the legume pasture than that of grass pasture and sufficient to fulfill the requirement of grazing animals, while in grass pasture, it was higher at the first two sampling periods but dropped to a marginal deficient level at sampling period 3 and reached at the severe deficient level at the fourth sampling period during this investigation. The soil-plant transfer factor for Cu was higher in legume pasture compared to its counterpart. It was found that with the increase of forage maturity, a significant reduction in the forage Cu concentration was observed reaching its minimum level at the last sampling period in the grass pasture. These concentrations were within the marginal and severe deficient levels and provide for only 76% of the ruminant requirements. The naturally upset balance of Cu offers a potential hazard not only to both pastures, but also to the Cu status of grazing ruminants therein. This necessitates the provision of additional amount of Cu mixture in the nutrition of livestock for health and reproduction potential enhancement of the animals being reared at that farm. Supplementing the deficient mineral with locally available Cu feed sources like green fodders, cakes, and brans or providing region-specific mineral supplements would alleviate the deficiency of copper during the late season at the livestock farm.

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“…l4 In copper-depleted cattle, cytochrome oxidase activity of the mucosa of the duodenum and jejunum was decreased, 22 villi of the small intestine were atrophied, 17 and neutrophil function (candidacidal activity) was decreased. 4 Copper deficiency induced by an excess of either molybdenum or iron impairs neutrophil phagocytic function more than does a diet with low levels of copper.…”

Section: 13mentioning

confidence: 99%

Laboratory Findings Associated with Abomasal Ulcers/Tympany in Range Calves

et al. 1990

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Abstract. The etiology of abomasal ulcers/tympany was investigated in 48 animals from 36 ranches in Wyoming and Nebraska. Results indicate that subclinical trace mineral deficiencies of copper and/or selenium exist in the range cattle in west central Nebraska and Wyoming. Etiological agents most frequently incriminated by bacteriologic cultures and/or histopathic examination were Clostridium perfringens and Campylobacter species. Histopathologic evaluation of abomasums revealed 31 of 38 cases contained abundant gram-positive bacteria associated with the damaged abomasal mucosa. Campylobacter-like organisms were demonstrated in 9 of 38 cases using the modified Dieterle stain. Clostridium perfringens was isolated in 14 of 38 cases, and Campylobacter jejuni was recovered from 5 of 38 cases.

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Experimental copper deficiency in the calf

Cited by 47 publications

References 21 publications

Effects of copper source and concentration on copper status and immune function in growing and finishing steers

Effects of copper source and concentration on copper status and immune function in growing and finishing steers

Studies on the Transfer of Copper from Soil to Pastures at Different Sampling Periods: A Case Study of a Semiarid Region (Sargodha) in Pakistan

Laboratory Findings Associated with Abomasal Ulcers/Tympany in Range Calves

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