Concentration of Minerals in Tissues of Pigs from Dams Fed Different Levels of Dietary Zinc

Abstract

Effects on the tissue mineral concentrations of pigs from sows fed four dietary Zn levels were studied. A male and a female from first- and second-parity litters were killed at 1 and 21 d of age. The dams were fed a corn-soybean meal basal diet supplemented with 0, 50, 500 or 5,000 ppm Zn from 30 kg body weight until completion of the second lactation. Pigs from sows fed 5,000 ppm additional zinc had heavier liver, heart, thyroid and adrenal weights relative to their body weight than did pigs from sows on the other treatments. First- and second-parity pigs from sows on the highest Zn supplementation level had higher Fe stores in the liver, higher Zn concentrations in the liver, kidney and pancrease, and higher Cu levels in the kidney compared with pigs from sows on the other treatments. However, Cu concentrations in the liver, heart, pancreas, esophagus, aorta and testes were reduced in pigs from sows on the 5,000 ppm Zn treatment. In first-parity pigs, Ca in the liver was higher for pigs whose dams received 5,000 ppm Zn compared with pigs from sows on all other treatments, and the Mn level was higher compared with pigs from sows receiving 50 or 500 ppm additional zinc. Pigs at 1 d of age from sows on the 0, 50 or 500 ppm treatment had lower hepatic P and Zn concentrations than pigs from sows on the same treatment at 21 d of age. The reverse was true for pigs whose dams received 5,000 ppm Zn.

Zn status of sows and piglets as affected by diet and sow parity

“…Colostrum and milk Zn concentration seem to be maintained over a wide range of dietary Zn intakes (Earle and Stevenson, 1965;Courtney Moore et al, 1984;Krebs, 1998;Kelleher and Lönnerdal, 2005), and only when Zn was fed at 3-4 times the recommended dose for sows, in colostrum and milk Zn concentrations increased (Kirchgessner et al, 1980). Other authors reported increased concentrations of Zn in sow milk and piglet liver, kidney and pancreas, accompanied by a decrease in Cu concentration in sow milk and piglet liver, pancreas and muscle when excessive dietary Zn (5000 ppm) was supplied (Hill et al, 1983a(Hill et al, , 1983b.…”

Effect of Zinc Sulfate and Zinc Glycine Chelate on Concentrations of Acute Phase Proteins in Chicken Serum and Liver Tissue

“…The Zn concentration in liver tissue was conducted using a method described by Shelton and Southern [45] and Hill et al [46] (Table 5). Zn was separately determined in each liver sample taken from each of the birds.…”

Effects of Zinc Glycine Chelate on Oxidative Stress, Contents of Trace Elements, and Intestinal Morphology in Broilers

“…Uniform samples were cut from tissues, wet-digested using nitric-perchloric acid, and then diluted with deionized-distilled water for analyses of minerals [25]. Contents of Zn, iron (Fe), copper (Cu), and manganese (Mn) were analyzed with flame atomic absorption spectrophotometry (AA-6300, Shimadzu, Tokyo, Japan).…”