Effect Of Organic Zinc Supplementation Research Articles

Effect of organic zinc supplementation on hematological, mineral, and metabolic profile in dairy cows in early lactation

Effect of organic zinc supplementation on hematological, mineral, and metabolic profile in dairy cows in early lactation

Effect of Organic Zinc Supplementation on Semen Production and Quality in Kankrej Bulls

Background: Zinc is found in very high concentration in semen and male reproductive tract and acts as a hormone receptor modulator for testosterone production in Leydig cells. Thus, it plays a very important role in male reproduction. Moreover, Indian soils are very deficient in zinc as per earlier reports and recent studies have shown that supplementation of zinc has improved qualitative as well as the quantitative aspects of semen quality in bulls. So, a study has been planned to study the effect of organic zinc supplementation on semen production and quality in kankrej bulls. Methods: A total of 8 healthy Kankrej bulls under semen collection were selected for the study. Basal diet (concentrate mixture, green and dry fodder) was fed during pre-supplementation and zinc propionate @ 100 ppm/bull was supplemented to the basal diet during post-supplementation for a period of 60 days to complete one spermatogenic cycle. A total of 128 ejaculates (64 pre-supplementation and 64 post-supplementation) were collected. Result: Mean semen volume was non-significant (P greater than 0.05) between the treatment groups. Mean sperm concentration was 1325.68±80.08 and 2162.36±112.0 million/ml pre- and post-supplementation, respectively. Feeding of zinc propionate significantly (P less than 0.01) increased semen sperm concentration. The average mass motility of sperms was significantly (P less than 0.01) higher during post-supplementation (3.92%) than the pre-supplementation (3.78%). The overall live sperms were significantly (P less than 0.01) higher during post-supplementation (73.33±0.91%) than the pre-supplementation (63.53±1.03%). It may be concluded that supplementation of 100 ppm of zinc propionate in the diet of Kankrej bulls improved semen quality in terms of quantitative and qualitative characteristics of semen.

Effect of organic zinc supplementation into basal diets on productive performance of laying hens

This study was carried out to determine the dietary supplementation of organic zinc on feed intake (FI), feed conversion ratio (FCR), egg production (EP), egg mass (EM) and quality. A total of 120 ISA-Brown layers aged 20 weeks were used in this study. Hens were distributed randomly to four treatments (30 hens of each) with three replicates. The organic zinc was supplemented into basal diet at different concentrations as follows; (T1) 0, (T2) 100, (T3) 200, and (T4) 300 mg/kg. The results showed T2 was recorded improvement significant on FI, and FCR followed by T3. Also, egg mass in T2 was increased significantly compared with T1. The T2 and T3 were significantly higher in average egg production as compared to T1 which was showed the lowest value. There was no significant effect on egg quality when supplemented organic Zn to the diet of layer hens. It might be concluded that the dietary supple-mentation of 100 mg/kg of organic Zn has improved feed consumption which is reflected in the produc-tivity of laying hens.

Influence of chelates on pigs productivity and quality

Influence of chelates on pigs productivity and quality

Positive effect of organic zinc supplementation on the persistence of anti-rabies neutralizing antibodies in healthy sheep

The main prophylactic tool to control rabies in herbivores is the systematic vaccination of susceptible animals. This study aimed to evaluate the positive effect of organic zinc (Zn) supplementation on the persistence of anti-rabies neutralizing antibodies in healthy sheep. A total of 36 Texel ewes were selected and randomly divided into 2 groups of 18 animals each. The treated group (TG) received organic Zn supplementation for 90 days, and after this period, 2 doses of rabies vaccine with a 30-day interval. The control group (CG) received the vaccine doses only and was not supplemented with organic Zn. Blood samples were collected before the first vaccination and 30, 60, and 90 days after vaccination, to determine the anti-rabies neutralizing antibody titer using the Rapid Fluorescent Focus Inhibition Test (RFFIT). The average values of anti-rabies serum-neutralizing antibodies 30 days after the first dose were 1.33 ± 0.62 IU mL-1 for the CG and 1.57 ± 0.80 IU mL-1 for the TG; 60 days after the second dose the average values were 7.60 ± 7.08 IU mL-1 and 12.97 ± 9.46 IU mL-1 for the CG and TG, respectively, with a significant difference between groups. The TG presented 100% vaccine coverage of the primary vaccination, whereas the CG presented 89.47% coverage. Oral supplementation with 75 mg organic Zn significantly increased the persistence of anti-rabies antibody titers in sheep, and it improved the vaccine coverage of the primary vaccination.

Effect of organic zinc supplementation on growth, metabolic profile and antioxidant status of Ganjam sheep

Fifteen Ganjam sheep (3-4 months of age) were stratified into three equal groups and fed a basal diet consisting of concentrate mixture and paddy straw. T1 served as control (without any supplementation), T2 and T3 were supplemented with 20 and 40 mg zinc/kg DM as zinc methionine respectively. Experimental feeding continued for a period of 90 days. Blood samples were collected on 90 days of the experimental feeding. Results revealed non significant (P>0.05) increase in body weight gain in zinc supplemented groups. Hemoglobin content, packed cell volume, glucose, total protein, albumin, globulin and urea concentration were similar (P>0.05) among the three groups. The antioxidant enzymes concentration were significantly (P>0.05) higher in zinc supplemented group than control. It may be concluded that supplementation of organic zinc prevents stress without affecting growth and blood chemistry of sheep.

Effects of organic zinc supplementation in weaned calves

The aim of the study was to investigate the effect of organic zinc supplementation in calves on serum zinc (Zn) concentrations, selected metabolic profile indicators and serum immunoglobulin (Ig) concentrations. The trial included 2 groups (n = 10) of weaned female calves. The Zn-Methionin calves (group Zn-Met) were supplemented with 30 mg Zn-Met/kg dry matter (DM)/day (BIOPLEX® Zn, Alltech, USA) for 90 days; the control calves (group C) received the same diet without organic zinc supplementation. Compared to the control group, organic Zn treatment significantly increased serum Zn concentration (P < 0.05), superoxide dismutase (SOD) activity (P < 0.01) and total Ig (P < 0.01) in the group Zn-Met at the beginning (7 days from the start of Zn-Met supplementation) of the trial. At the end of the trial (day 90) serum total protein (TP) (P < 0.05), albumin (P < 0.01), urea (P < 0.01), SOD (P < 0.01), copper (Cu) (P < 0.05), Zn (P < 0.01) and Ig (P < 0.05) concentrations were significantly higher in the Zn-Met calves. In the control group alkaline phosphatase (ALP) activity was significantly (P < 0.01) higher on day 90. A positive correlation between zinc concentrations, ALP, and SOD activities in serum, and a negative correlation between zinc and copper concentrations were demonstrated. Dietary Zn-Met supplementation in calves markedly influenced the metabolic profile and serum immunoglobulin concentrations. Compared to the control group, the Zn supplemented group showed a significantly (P < 0.05) lower ALP and significantly greater SOD serum activity (P < 0.01) at the end of the trial. Total Ig concentrations were significantly higher in the Zn treated group (day 7: P < 0.01 vs. day 90: P < 0.05).

Effect of organic zinc supplementation on growth, nutrient utilization,and plasma zinc status in lambs

Two experiments were conducted to investigate the effect of supplemental zinc (Zn) on performance, nutrient digestibility, and plasma Zn status in Zandi lambs. In experiment 1, 18 male lambs (BW = 21.30 ± 0.55 kg) were fed a basal diet containing 22.8 mg Zn/kg dry matter (DM) with no supplemental Zn (control) or 20 mg of supplemental Zn/kg of DM from Zn sulfate (ZnS) or Zn peptide (ZnP). Average daily gain and dry matter intake were higher for the lambs fed the diet supplemented with ZnP. Feed conversion ratio was significantly (P < 0.05) lower in the ZnP group compared to the control and ZnS groups. In experiment 2, an in vitro gas production technique was used to evaluate the effects of zinc source on the gas production parameters. Rate of gas production after 6 h and total production of gas after 24 and 48 h did not differ between groups. In vitro DM digestibility, short-chain fatty acids, and ME content were increased (P < 0.05) by ZnP supplementation when compared to the ZnS and control groups. The results of this study showed that feeding ZnP improves performance and digestibility of DM and could result in higher metabolizable energy and short-chain fatty acid yield.

Effect of organic zinc supplementation on growth, nutrient utilization and mineral profile in lambs

To study the efficacy of organic zinc (Zn) supplementation on growth, nutrient utilization and mineral profile as compared to inorganic source [zinc sulphate (ZnSO 4)], 18 Muzaffarnagari male lambs of 11.30 ± 0.45 kg mean body weight (4–5 months of age) were divided into three groups of six animals in each in a randomized block design. Lambs in the control group were fed a standard total mixed ration (TMR) consisted of 60 kg/100 kg of concentrate mixture (CM) and 40 kg/100 kg of wheat straw. CM was consisted of 300 g/kg crushed maize grain, 270 g/kg soybean meal, 400 g/kg wheat bran, 20 g/kg mineral mixture (without Zn) and 10 g/kg common salt. Animals in the experimental groups were additionally supplemented with 20 mg Zn/kg of diet either through inorganic (ZnSO 4) or organic [Zn-methionine AA complex (Zn-meth)] sources. Experimental feeding was done for a period of 150 days including a 6 days metabolism trial. The intake of dry matter (DM), organic matter (OM), crude protein (CP), digestible CP and total digestible nutrients and digestibility of DM, OM, CP, ether extract, neutral detergent fibre and hemicellulose were comparable (P>0.05) among the three groups. However, digestibility of cellulose and acid detergent fibre was significantly (P<0.05) higher in Zn-meth group as compared to control group. Though the balance of calcium was adversely affected (P<0.01) in both the Zn supplemented groups, but it was significantly higher in Zn-meth group compared to ZnSO 4 group. While apparent absorption and retention of nitrogen, phosphorus, copper, iron and manganese were similar (P>0.05) among different groups, retention of Zn (P<0.05) as well as its concentration in the serum (P<0.01) were highest in Zn-meth group, followed by ZnSO 4 group and lowest in the control group, suggesting higher bioavailability of Zn from Zn-meth as compared to ZnSO 4. Average daily gain of the lambs and feed conversion efficiency were also significantly (P<0.05) higher in Zn-meth group as compared to control and ZnSO 4 groups, suggesting a positive role of organic zinc supplementation on the performance of lambs.