Studies on copper and cobalt in dairy calves

Maro, J. K.; Kategile, J.A.; Hvidsten, H.

doi:10.1079/bjn19800006

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Copper deficiency causes various disorders in animals such as anemia, retarded growth, immunological dysfunctions, reproductive disorders, and alter cardiovascular, nervous, and skeletal systems [1]. The effects of copper supplementation were reported in deficient dairy cows and calves using different levels and various form of copper with or without antagonists [8][9][10][11][12]. Similar studies were also performed in beef cattle [13][14][15][16][17][18][19].…”

Section: Discussionmentioning

confidence: 68%

Effects of Short-Term Over-supplementation of Copper in Milk on Hematology, Serum Proteins, Weight Gain, and Health in Dairy Calves

Naseri

Mohri

Aslani

et al. 2010

Biol Trace Elem Res

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Thirty-six calves were used in the present study. The animals were divided equally into three groups (control, test 1, and test 2). The three groups of calves were homogeneous for parity of dams, sex, and month of birth. From 14 days of age, in the test 1 group copper as copper sulfate (Merck Co, Germany) was added to each meal of milk at a rate of 10 mg/kg of milk for 14 days and in test 2 group copper as copper sulfate was added to each meal of milk at a rate of 20 mg/kg of milk for 14 days. Blood samples were taken by jugular venipuncture using disposable syringes at 14 (before Cu supplementation), 30, 60, and 80 days of age. Anticoagulated blood was used for CBC determination. Plane tubes were used for harvesting of serum and the amounts of total serum protein, albumin, iron, and copper were measured. Calves were weighted at birth and at the end of trial (day 80) and total gain and mean daily gain were calculated. Days of treatment for ill calves were also recorded during experiment. Group (treatment) had no significant effect on the amounts of measured parameters except MCH values (p < 0.05) which were significantly lower in test 1 group than other trial groups. Age (sampling time) had significant effects on the values of most measured parameters (p < 0.05) except WBC, lymphocyte, total protein, and fibrinogen. Significant interactions between sampling time and group were not seen for any of measured parameters. No significant differences were seen for total weight gain and mean daily gain between trial groups. Chi-square test revealed no significant difference for the days of treatment between trials groups.

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Section: Discussionmentioning

confidence: 68%

Effects of Short-Term Over-supplementation of Copper in Milk on Hematology, Serum Proteins, Weight Gain, and Health in Dairy Calves

Naseri

Mohri

Aslani

et al. 2010

Biol Trace Elem Res

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“…Some microbes can use Co to synthesize vitamin B 12 and other rumen microbial growth factors ( 52 ). Vitamin B 12 synthesis is necessary for many bacterial enzymes, and these enzymes participate propionic acid metabolism along with synthesis of methane, acetic acid, and methionine ( 3 , 53 ). Research using diets comprised mainly of wheat straw demonstrated that increasing Co inclusion rates significantly increase TVFA and acetic acid, propionic acid, and butyric acid production ( P < 0.05; 27).…”

Section: Resultsmentioning

confidence: 99%

Feeding Sheep Cobalt and Oregano Essential Oil Alone or in Combination on Ruminal Nutrient Digestibility, Fermentation, and Fiber Digestion Combined With Scanning Electron Microscopy

Jiao

Casper

et al. 2021

Front. Vet. Sci.

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The feeding of Co lactate (Co), an essential oil blend (EO; oregano), or a combination of Co and EO (EOC) may improve nutrient digestion of corn silage-based rations. In four separate studies, Co, EO, or EOC was fed at 0, 4, and 7 g/days to nine rumen fistulated rams arranged in a replicated 3 × 3 Latin square design. The fourth study evaluated the carrier at 0, 4, and 7 g/day. In each ram, fresh ensiled corn silage, leaf, and husk were placed in individual nylon bags inserted through the ruminal cannula and removed after 48 h. Rams fed increasing carrier rates demonstrated similar (P > 0.10) nutrient digestibilities and ruminal pH and volatile fatty acid concentrations. Feeding Co at 4 and 7 g/day increased (P < 0.05) digestibility of DM (59.4, 63.9, and 62.4% for 0, 4, and 7 g/day, respectively), NDF (59.4, 63.9, and 62.4%), and hemicellulose (HC; 56.2, 63.6, and 65.9%) compared with rams fed 0 g/day, while CP digestibility (46.4, 49.9, and 57.8%) was improved (P < 0.05) in rams fed 7 g/day compared with those fed 0 and 4 g/day. Rams fed 4 g/day EO digested greater (P < 0.05) HC (64.1, 71.4, and 69.1%) than rams fed 0 g/day, while rams fed 7 g/day were intermediate and similar (P > 0.10). Rams fed the EOC combination at 4 and 7 g/day demonstrated greater (P < 0.05) digestibilities of DM (57.7, 60.0, and 60.0%), NDF (21.4, 28.8, and 27.7%), and ADF (24.3, 33.3, and 34.4%) than rams fed 0 g/day. The SEM and SM techniques visually demonstrated minor evidence of husk and leaf digestibility in rams across the three experiments when fed 0 g/day of Co, EO, or EOC; rams fed 4 g/day of Co, EO, or EOC exhibited varying visual signs of leaf digestion with some palisade tissue, spongy tissue, and whole vein structure remaining, while in rams fed 7 g/day, only the vein structure remained. Results demonstrated that feeding Co, EO, or EOC at 4 or 7 g/day enhanced ruminal nutrient digestion and fermentation parameters, which was visually confirmed via SEM and SM.

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“…Early studies showed that the supplementation of Co plus Cu had positive effects on microbial population, rumen fermentation and digestion of low quality forages in calves and heifers (Saxena and Ranjhan, 1980;Lopez-Guisa and Satter, 1992). Moreover, addition of Co and Cu had an additive effect on weight gains of dairy calves (Maro and Kategile, 1980). However, the effects of Co and Cu on vitamin B 12 synthesis and haematopoiesis in ruminants have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Effects of cobalt and copper supplementation on vitamin B<sub>12</sub> status and blood parameters in lambs

Wang¹,

Zhang²,

Zhu³

et al. 2007

J. Anim. Feed Sci.

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The experiment was conducted to investigate the effects of cobalt (Co) and copper (Cu) supplementation on vitamin B 12 status and blood parameters in lambs. Sixteen lambs were assigned randomly to control group which was fed with the basal diet containing 0.086 mg Co/kg DM and 6.09 mg Cu/kg DM and the Co-, Cu-and Co-Cu groups, supplementation of 0.03 mg Co/kg DM and 10 mg Cu/kg DM, separately and in combination to the control diet. The Co-and Co-Cu supplemented lambs showed higher vitamin B 12 concentrations in both ruminal fl uid and plasma, and lower methylmalonic acid in plasma compared with other groups (P<0.01). No difference was observed in plasma glucose between treatments (P>0.05). Haeme-depending blood parameters were enhanced by Co or Cu supplementation. It was concluded that vitamin B 12 production by rumen microorganism was accounted for by cobalt intake with no collaborate effects of Co plus Cu supplied in the diet. Co or Cu supplementation has positive effects on blood parameters.

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Studies on copper and cobalt in dairy calves

Cited by 5 publications

References 11 publications

Effects of Short-Term Over-supplementation of Copper in Milk on Hematology, Serum Proteins, Weight Gain, and Health in Dairy Calves

Effects of Short-Term Over-supplementation of Copper in Milk on Hematology, Serum Proteins, Weight Gain, and Health in Dairy Calves

Feeding Sheep Cobalt and Oregano Essential Oil Alone or in Combination on Ruminal Nutrient Digestibility, Fermentation, and Fiber Digestion Combined With Scanning Electron Microscopy

Effects of cobalt and copper supplementation on vitamin B<sub>12</sub> status and blood parameters in lambs

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