+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Endogenous zinc excretion and 65Zn metabolism in Holstein calves fed intermediate to high but nontoxic zinc levels in practical diets

, : Endogenous zinc excretion and 65Zn metabolism in Holstein calves fed intermediate to high but nontoxic zinc levels in practical diets. Journal of Nutrition. 101: 12, 1673-1681

Zn and 65ZN metabolism, from a single intravenous dose, given 7 days after diets were started were studied in Holstein bull calves given a practical diet containing 38 mg Zn/kg or the same diet with 200 or 600 mg supplemental Zn/kg as zinc oxide. The supplemental Zn increased endogenous 65ZN in faeces by 30%, 200 mg Zn/kg having as much influence as 600 mg/kg. The supplemental Zn had a variable effect on 65Zn distribution in different tissues 14 days after dosing. With some tissues including testicle, rumen wall and abomasum (fundic) each increase in Zn in the diet reduced65Zn content. In muscle, amount of Zn in the diet had no effect of 66Zn concentration. Added Zn 200 mg/kg increased 65Zn and stable Zn in pancreas, liver and kidney; a further increase to 638 mg/kg caused large increases in these tissues indicating a breakdown in homoiostatic control for both injected and absorbed Zn. With 638 mg/kg smaller increases in 65Zn occurred in bone and small intestine. Serum 65Zn increased with the high-Zn diet. Except for muscle, where there was no change, specific activity in every tissue studied decreased with each increase in Zn in the diet.


PMID: 5126263

Other references

Croitoru, M.; Stainback, R.F.; Hernandez, A.; Frazier, O.H.; Radovancevic, B.; Myers, T.; Wilansky, S., 2001: Doppler echocardiographic diagnosis of inlet and outlet conduit dysfunction in patients with the TCI Heartmate Vented Electric left ventricular assist device. Journal of the American College of Cardiology 37(2 Supplement A): 422A, February

Nugroho, H.; Kojima, J-Ichi.; Ubaidillah, R., 2014: Review of potter wasps with a petiolate metasoma excluding so-called "Zethinae" (Hymenoptera: Vespidae: Eumeninae) in the Lesser Sunda Islands of the Indonesian Archipelago. Twenty species and six subspecies of nine genera of eumenine wasps with a petiolate metasoma occurring in the Lesser Sunda Islands are listed. New synonymies are proposed for Delta campaniforme campaniforme (Fabricius 1775) (=D. campaniforme gra...

Knebel, R., 1960: Treatment after heart operations. Verhandlungen der Deutschen Gesellschaft für Kreislaufforschung 26: 95-102

Nelson, R.; Nelson, J., 1987: Observations of a honey badger and chanting goshawks at Nxai pan. Babbler (Gaborone): 18-19 No. 14

Anderson, R.C., 1972: The ecological relationships of meningeal worm and native cervids in North America. The relationship of Parelaphostrongylus tenuis and its usual host, Odocoileus virginianus, is reviewed. Important alterations in the environment in North America in the past 100 years have greatly expanded the northern range of white-tailed deer a...

Capo-Aponte, J., E.; Wang, Z.; Bildin, V., N.; Pokorny, K., S.; Reinach, P., S., 2007: Fate of hypertonicity-stressed corneal epithelial cells depends on differential MAPK activation and p38MAPK/Na-K-2C1 cotransporter1 interaction. The capacity of the corneal epithelium to adapt to hypertonic challenge is dependent on the ability of the cells to upregulate the expression and activity of cell membrane-associated Na-K-2Cl cotransporter1 (NKCC1). Yet, the signaling pathways th...

Zhang, C-Hao.; Li, C.; Wang, Y-Xin.; Chen, Y.; Dong, Z.; Zhang, X.; Zhang, F.; Yin, H.; Tong, X.; Wang, J.; Zhang, P-Lan., 2015: Efficacy and Safety of Intravenous Thrombolysis for the Treatment of Acute Ischemic Stroke Patients with Saccular Intracranial Aneurysms of ≤3 mm. To explore the effectiveness and safety of intravenous thrombolysis (IVT) using recombinant tissue plasminogen activator in treating acute ischemic stroke patients with concomitant intracranial aneurysms (IA) of ≤3 mm. Clinical data of patients...

Cotzias, G.C.; Papavasiliou, P.S.; Tolosa, E.S.; Mendez, J.S.; Bell-Midura, M., 1976: Treatment of Parkinson's disease with aporphines. Possible role of growth hormone. To avoid the main drawbacks of prolonged treatment with levodopa (involuntary movements and the "on-off" phenomenon), we administered apomorphine by mouth to 14 patients with Parkinson's disease. This treatment caused azotemia, whic...

Zachariassen, E., 1989: Litter size of gilts following uterine presensitisation with inactivated semen. At the first sign of oestrus, 30 Danish Landrace gilts in 2 herds were inseminated with inactivated semen prior to normal insemination, and 30 gilts received no treatment (controls). For treated and control gilts, litter size at birth averaged 10....

Ai, F.; Yin, Q.; Wang, Z.; Xia, H.; Chang, Y.; Wu, Z.; Liu, J., 2006: Applied anatomy of transoral atlantoaxial reduction plate internal fixation. A C1-C2 operation by the transoral approach was simulated to study the anatomic stratification, various structures, and adjacent relationships. The anatomic parameters in relation to transoral atlantoaxial reduction plate (TARP) internal fixation...