Abstract
This experiment was conducted to explore the efficacy of lacquer (Rhus verniciflua) supplementation on growth performance, nutrient digestibility, carcass traits and serum biochemical values in commercial broilers. Eight hundred and forty Hubbard broiler chicks (1d old) were randomly distributed and allotted to four dietary treatments for five weeks. Each treatment had 5 replicates with 42 birds each. The dietary treatments were (1) control (2) 1% lacquer, (3) 2% lacquer and 4) 4% lacquer supplied as meal in the diet. Supplementation with lacquer improved weight gain (p = 0.0960) showing a linear trend during the starter phase (0-3 wk), but weight gain, feed intake and feed conversion ratio remained unaffected at the finisher phase (4-5 wk) and overall (0-5 wk). The nutrient digestibility studies conducted after 18 and 35 days of experimental feeding showed a linear (p<0.05) increase in digestibility of CP and ether extract at both measurement timess. The carcass studies were conducted on two birds per replicate (10 per treatment) at the end of both 3 and 5 wk. The dressing percentage, liver weight, heart weight, abdominal fat and the breast meat expressed as a percentage of live weight, did not differ significantly due to treatments at both phases. The serum cholesterol and high-density lipoprotein (HDL) showed a linear decrease (p = 0.0683 and p = 0.0322, respectively) as the level of supplementation increased at 3 wk; at 5 wk serum cholesterol, HDL and triglyceride levels decreased significantly showing a positive linear effect of lacquer on fat metabolism. The meat color values such as lightness, redness and yellowness did not reveal any significant trend. Overall, it could be concluded that lacquer supplementation at higher levels did not affect growth performance, but had a positive impact on fat metabolism by influencing fat digestibility and reducing serum cholesterol and triglyceride. (Asian-Aust. J. Anim. Sci. 2006. Vol 19, No. 3 : 418-424)
Highlights
Key Words : Broilers, Lacquer, Carcass, Growth, Fat, Digestibility and Lim, 2001) and RVS augments the activity of cellassociated detoxifying enzymes in hepatocytes (Lim et al, Lacquer (Rhus verniciflua) has been used in Japan, 2000) has been reported
The serum biochemicals were measured by using kits (Alfa Wassermann BV, Woerden, NL) and analyzer (HITACHI 747, Japan), except LDL that is calculated as the difference between total cholesterol and the combined concentration of HDL and very low-density lipoprotein (VLDL)
The crude protein and fat content in the lacquer meal used in present study was 1.13 and 4.32%, respectively (Table 3)
Summary
Lim, 2001) and RVS augments the activity of cellassociated detoxifying enzymes in hepatocytes (Lim et al., Lacquer (Rhus verniciflua) has been used in Japan, 2000) has been reported. Constituents in the sap and the does not contain urushiols and this part of plant has been polymerization mechanism of lacquers have been revealed used as a kind of tonic, for cancer prevention and for (Kumanotani, 1995), biological activities are still unclear removing the intoxication of smoking or lingering (Park et (Lu et al, 2000). 65%), glycoprotein (2.1-1.8%), gummy substance (6-7%), pigs and poultry, its exact effects are not revealed which contains laccase (0.24%), stellacyanin and some of fullyI.n view of above, there seems a positive role of lacquer mono-, oligo- and polysaccharides, and water The present study was planned to see activity because of its special molecular structure Against hydroxyl radicals (Lee et al, 2001), antiproliferative activity against human cancer cell lines
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
