지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The purpose of our study was to determine the effects of varying levels of energy, protein, and amino acids on the performances of laying hens. A total of 240 Hy-Line Brown laying hens at 36 weeks of age were used in this 4-week feeding trial. The hens were randomly allocated to five treatment diets, with eight replications of six hens in each replicate cage. The treatment diets were as follows: A- basal diet + 18% crude protein, metabolizable energy 2,800 kcal, total (methionine + cysteine) 0.65%; B- basal diet + 17% crude protein, metabolizable energy 2,700 kcal, total (methionine + cysteine) 0.59%; C- basal diet + 16.5% crude protein, metabolizable energy 2,700 kcal, total (methionine + cysteine) 0.59%; D- basal diet + 16.5% crude protein, metabolizable energy 2,700 kcal, total (methionine + cysteine) 0.54%; and E- basal diet + 16% crude protein, metabolizable energy 2,680 kcal, total (methionine + cysteine) 0.54%. The study results revealed that the hen-day egg production of hens that were fed with low-energy diets (B, C, and D) was comparable with that of hens fed with high-energy diet A, whereas average daily feed intake in hens fed treatment diet D and E was significantly higher (P<0.05) than that in hens fed treatment diet A. Overall, the eggshell thickness was unaffected by any of the treatment diets. Egg weight was comparable among the treatment diets, except for treatment diet E. Haugh unit improved with decreasing levels of dietary energy, protein, and methionine + cysteine in the diet. We can summarize that laying hens fed with low dietary energy and low crude protein treatment diets B, C, and D had satisfactory performance compared with those fed with high-energy treatment diet A. This indicates that there is the potential to reduce feed costs by formulating diets with lower energy and low protein levels.
목차
ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES
참고문헌 (26)
참고문헌 신청
[학술지(정기간행물)] - Cupertino ES / 2009 / Exigência nutricional de metionina+cistina digestíveis paragalinhas poedeiras de 54 a 70 semanas de idade / R Bras Zootec 38 : 1238 ~ 1246
[학술지(정기간행물)] - Filho JJ / 2006 / Exigências nutricionais de metionina+cistina para poedeiras semipesadas do início de produção até o pico de postura / R Bras Zootec 35 : 1063 ~ 1069
[학술지(정기간행물)] - Grobas S / 1999 / Laying hen productivity as affected by energy, supplemental fat, and linoleic acid concentration of the diet / Poult Sci 78 : 1542 ~ 1551
[학술지(정기간행물)] - Harms RH / 1998 / The influence of methionine on commercial laying hens / J Appl Poult Res 7 : 45 ~ 52
[학술지(정기간행물)] - Harms RH / 2000 / Performance of four strains of commercial layers with major changes in dietary energy / J Appl Poult Res 9 : 535 ~ 541
[학술지(정기간행물)] - Filho JJ / 2006 / Exigências nutricionais de metionina+cistina para poedeiras semipesadas do início de produção até o pico de postura / R Bras Zootec 35 : 1063 ~ 1069
[학술지(정기간행물)] - Grobas S / 1999 / Laying hen productivity as affected by energy, supplemental fat, and linoleic acid concentration of the diet / Poult Sci 78 : 1542 ~ 1551
[학술지(정기간행물)] - Harms RH / 1998 / The influence of methionine on commercial laying hens / J Appl Poult Res 7 : 45 ~ 52
[학술지(정기간행물)] - Harms RH / 2000 / Performance of four strains of commercial layers with major changes in dietary energy / J Appl Poult Res 9 : 535 ~ 541
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UCI(KEPA) : I410-ECN-0101-2018-527-001024518