Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
권호 표지

Effect of Feeding Diets Containing Green Tea By-Products on Laying Performance and Egg Quality in Hens

녹차 가공 부산물을 첨가한 산란계 사료의 급여가 난 생산성과 난 성분에 미치는 영향

  • Yang, C.J. (College of Agriculture and Life Sciences, Sunchon National University) ;
  • Jung, Y.C. (College of Agriculture and Life Sciences, Sunchon National University) ;
  • Uuganbayar, D. (College of Agriculture and Life Sciences, Sunchon National University)
  • Published : 2003.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study was carried out to evaluate effect of dietary green tea by-products (GTB) on laying performance and quality of eggs in hens. A total of 96 laying hens (22-week-old) "Tetran Brown" were allotted to four dietary treatments, which containing 0, 2, 4 and 6% green tea-by products. The results showed that the egg production increased (P＜0.05) in layers fed diets containing 4% or 6% green tea-by products compared to the layers fed control no GTB. Egg weight and egg mass in layers fed diets containing 2% green tea by-products significantly decreased compared to those in the other groups (P<0.05). The feed intake was lower in layers fed diets containing 2% and 6% green tea by-products. The feed conversion ratio was lower (P<0.05) in layers fed diets containing 4% or 6% green tea by-product supplementation respectively. The egg shell thickness was no significantly different between layers fed the control and green tea by-product diets (P>0.05). The egg yolk cholesterol tended to decrease when layers fed diets containing green tea by-products, although the differences were not significant (P＞0.05). The linolenic and docosahexaenoic (DHA) acid contents in egg yolk significantly increased in layers fed diets containing different levels green tea by-products compared to those fed control diet (P<0.05). These results suggest that inclusion of green tea by-products in layer diets is suitable for hens without negative effects on egg composition.

본 연구는 산란계에서 사료내 녹차 가공부산물을 첨가하여 난 생산성과 난 성분에 미치는 영향과 녹차 부산물의 최적 첨가수준을 알아보고자 연구하였다. 공시동물은 갈색 테트란 산란계 22주령 총 96수를 이용하였다. 녹차 부산물을 첨가를 각각 0%, 2%, 4% 및 6% 수준으로 4처리 4반복 반복당 6수로 완전임의 배치하였으며, 사료급여와 물은 자유 채식토록 하였고 나머지는 일반 관행에 따랐다. 실험 결과로 산란율은 4% 첨가구와 6% 첨가구가 각각 90.37%와 86.87%로 대조구 79.62%보다 높게 나타났으며, 통계적 유의차를 보였다(P＜0.05). 난중, 산란량 및 사료섭취량은 2% 첨가구가 59.68, 45.37 및 117.13 g으로 대조구와 다른 처리구보다 낮은 경향을 보였다 (p.0.05). 난각의 두께는 대조구가 397.50$\mu\textrm{m}$로 가장 두꺼웠지만 처리구간 통계적 유의차를 보이지 않았다 (P>0.05). 4주와 8주때 측정한 난황 콜레스테롤 함량은 녹차 가공부산물의 첨가수준이 증가할수록 낮아지는 경향을 보였으나 처리간 통계적 유의성은 없었다(P＞0.05). 계란의 난황내 지방산 함량은 linolenic acid와 docosahexaenoic acid (DHA)가 대조구보다 녹차 가공 부산물을 첨가한 처리구에서 증가하는 경향을 보였다.

Keywords

References

  1. Official Methods of Analysis(15th ed.) Association official Analytical Chemists AOAC
  2. Kor. J. Poult. Sci. v.19 Effect of dietary alfalfa mear on egg. Yolk Cholesterol Content and Productivity in Laying Hens An,B.K.;Chung,T.Y.;Kim,C.M.;Lee,S.J.;Kim,S.S.;Chung,S.B.
  3. Poultry Sci. v.57 Yolk cholesterol in eggs from various avian species Bair,C.W.;Marion,W.W. https://doi.org/10.3382/ps.0571260
  4. J. Nur. v.104 Effects of dietary roughage on cholesterol absorption, cholesterol turnover and steroid excretion in the rat Balmer,J.;Zilversmit,D.B.
  5. Poultry Sci. v.64 The effect of tap water, carbonated water, sodium bicarbonate, and calcium chloride on blood acid-base balance in cockerels subjected to heat stress Bottjed,W.G.;Harrison,P.C. https://doi.org/10.3382/ps.0640107
  6. Ann. Clin. Biochem. v.20 Direct determination of total cholesterol by column gas chromatographic analysis without previous derivatisation compared with WHO-CDC reference method Brunnekreeft,J.W.G.;Boerma,J.M.;Leijnse,B. https://doi.org/10.1177/000456328302000606
  7. Kor. J. Poult. Sci. v.15 Effect of hot pepper on egg shell component and egg yolk color in broiler parent stock Choi,B.R.;Kim,Y.I.;Oh,S.J.
  8. Biometrics v.11 Multiple range and multiple F tests Duncan,D.B. https://doi.org/10.2307/3001478
  9. Am. J. Clin. Nutr. v.28 Fatty acid composition of the plasma lipids in greenland eskimos Dyeberg,J.H.;Bang,O.;Hjome,N. https://doi.org/10.1093/ajcn/28.9.958
  10. Proceeding of the 8th World Conference on Animal Production Production of Special and Modulated Eggs Cuenter,W.;S.S.Sim
  11. Kor. J. Anim. Sci. v.41 Analysis of biofunctional components in brand eggs Ean,C.K.;Lee,B.H.;Lee,N.H.
  12. Biochem. Biophys. Acta. v.1127 Tea catechins decrese micellear solubility and intestinal absorption of cholesterol in rats keda,I.;Imasato,Y.;Sasaki,E. https://doi.org/10.1016/0005-2760(92)90269-2
  13. Proceeding of the International Symposium on Tea Science Anti-diabetes mellitus effect of watersoluble tea polysaccharide Sigaki,K.;Takakuwa,T.Takeo,T.
  14. Prev. Med. v.16 Garlic(Allium sativum) and onion(Allium cepa): A revies of their relationship to cardiovascular disease Kendler,B.S. https://doi.org/10.1016/0091-7435(87)90050-8
  15. Kor. J. Anim. Sci. v.39 Effects of dietary safflower and perilla oils on fatty acid composition in egg yolk Kim,E.M.;Choi,J.H.;Chee,K.M.
  16. Poult. Sci. v.54 Changes in plasma electrolytes, acid-base balance and other physiological parameters of adult female turkeys under conditions of acute hyperthemia Kohne,H.J.;Jones,J.E. https://doi.org/10.3382/ps.0542034
  17. Nipon Kaishi Nogeikagaku v.59 Antioxidative activity of tea leaf catechins Matsuzaki,T.;Hara,Y. https://doi.org/10.1271/nogeikagaku1924.59.129
  18. Proc. Soc. Exp. Biol. Med. v.220 Mechanism of cancer chemopreventive activity fo green tea Mukhatar,H.;Ahmad,N. https://doi.org/10.1046/j.1525-1373.1999.d01-40.x
  19. J. Nutr. Sci. Vitaminol. v.32 Effect of green tea catechins on plasma cholesterol level in cholesterol fed rats Muramatsu,K.;Fukuyo,M.;Hara,Y. https://doi.org/10.3177/jnsv.32.613
  20. Poult. Sci. v.55 The cholesterol problem, the egg and lipid metabolism in the laying hen Naber,E.C. https://doi.org/10.3382/ps.0550014
  21. Nutrient requirements of poultry(9th ed.) National Research Council
  22. Kor. J. Anim. Nutr. Feed v.21 Nutritive value of Korean medical herb residue as dietary supplements for broiler chicks Park,J.H.;Song,Y.H.
  23. Fragrance Jour. v.11 A tentative approach to dietary control of again process-antioxidative activity of tea leaf catechins in vivo Ryuhei,F.
  24. SAS user guide(Statistics Version 6. Fourth Edition) SAS/STAT