Postnatal Caffeine Effects on Copper, Zinc, and Iron Concentrations in Mammary Gland, Milk, and Plasma of Lactating Dams and Their Offspring

1997 ◽  
Vol 41 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Magdalena J. Rossowska ◽  
William Carvajal ◽  
Fred Joseph, Jr ◽  
Tetsuo Nakamoto
Keyword(s):  
Mammary Gland ◽  
Copper Zinc ◽  
Iron Concentrations

scholarly journals A study of single nucleotide polymorphism of leptin gene effect on serum copper, zinc and iron concentrations in Czech Pied bulls

2013 ◽  
Vol 82 (3) ◽  
pp. 259-263
Author(s):  
Aleš Pavlík ◽  
Petr Sláma ◽  
Aleš Knoll ◽  
Aleš Dufek ◽  
Petr Škarpa ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphism ◽  
Trace Elements ◽  
Adipose Tissue ◽  
Carcass Composition ◽  
The Body ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide ◽  
Copper Zinc ◽  
Iron Concentrations

Leptin, the product of the ob gene, is secreted mainly in adipose tissue. Due to the associations between plasma leptin concentrations and body fat, leptin could be used as an indicator for the in vivo evaluation of carcass composition in breeding programs. Previous studies showed relation between leptin concentrations and some trace elements, suggesting that they might be mediators of leptin production. The present study was designed to evaluate the effect of single nucleotide polymorphism of the leptin gene on concentration of trace elements in the serum of 58 Czech Pied bulls. Three experimental groups of bulls were formed depending on different leptin genotypes: group CC (n = 28), group CT (n = 21) and group TT (n = 9). In all groups, the age (at a mean age of 240 days) and the body weight (mean 291 ± 11 kg) difference among the chosen animals was non-significant. Blood samples of all bulls in experimental groups were collected from vena jugularis externa between 8.00 and 9.30 h. Concentrations of copper, zinc and iron in the serum of animals were measured. Significantly lower (P < 0.05) zinc concentrations were recorded in bulls of TT group (13.21 ± 1.81 µmol·l-1) compared to CC (20.09 ± 1.11 µmol·l-1) and CT group (19.67 ± 1.45 µmol·l-1). In case of copper and iron concentrations in serum of animals, no differences were recorded between the tested groups. This is the first study of its kind in Czech Pied cattle. Based on our results, we may assume that zinc plays some role in the metabolism of adipose tissue, havings an effect on beef quality.

scholarly journals Effect of Copper, Zinc, and Selenium on the Migration of Bovine Neutrophils

2021 ◽  
Vol 8 (11) ◽  
pp. 281
Author(s):  
Hai Wang ◽  
Guanxin Lv ◽  
Shuai Lian ◽  
Jianfa Wang ◽  
Rui Wu
Keyword(s):  
Trace Elements ◽  
Mammary Gland ◽  
Dairy Cows ◽  
Mammary Epithelium ◽  
Significant Degree ◽  
Mammary Epithelial ◽  
First Line ◽  
Copper Zinc ◽  
Effect Of Copper ◽  
Bovine Neutrophils

Neutrophils represent the first line of mammary gland defense against invading pathogens by transmigration across the mammary epithelial cell barrier. The effect of trace elements on the migration of bovine neutrophils is not clear. In this study, we investigated the effect of copper (Cu; 0.5, 1.0 and 1.5 mg/L), zinc (Zn; 1.0, 5.0 and 10 mg/L) and selenium (Se; 0.1, 1.0 and 2.0 mg/L) on the migration of bovine neutrophils by using a Transwell assay. The results showed that Cu, Zn and Se promoted the number of neutrophils in the trans-mammary epithelium. With the increased concentration of Cu at 1.5 mg/L, the number of neutrophils in the trans-mammary epithelium was increased significantly (p < 0.05). Zn (5.0 mg/L) and Se (0.1 mg/L) increased the migrated number of neutrophils (p < 0.01) to an extremely significant degree. These findings provided a theoretical and experimental basis for mammary gland immunity in dairy cows. Thus, we suggest that adding moderate amounts of different trace elements can improve the immune function of dairy cows.

Sign in / Sign up

Export Citation Format

Share Document