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육계의 사육 일령에 따른 닭고기의 이·화학적 특성에 미치는 영향

Effects of Raising Periods on Physico-Chemical Meat Properties of Chicken

  • 채현석 (농촌진흥청 국립축산과학원) ;
  • 최희철 (농촌진흥청 국립축산과학원) ;
  • 나재천 (농촌진흥청 국립축산과학원) ;
  • 장애라 (농촌진흥청 국립축산과학원) ;
  • 김민지 (농촌진흥청 국립축산과학원) ;
  • 방한태 (농촌진흥청 국립축산과학원) ;
  • 김동욱 (농촌진흥청 국립축산과학원) ;
  • 서옥석 (농촌진흥청 국립축산과학원) ;
  • 박성복 (농촌진흥청 국립축산과학원) ;
  • 조수현 (농촌진흥청 국립축산과학원) ;
  • 강환구 (농촌진흥청 국립축산과학원)
  • 투고 : 2011.09.27
  • 심사 : 2011.11.28
  • 발행 : 2011.12.31

초록

본 연구는 1일령 초생추(Ross)를 이용하여 사육 일령(30, 36, 42일령)에 따른 계육 품질 변화를 조사하고자 수행하였다. 육계의 사육 단계별 닭고기의 육질 변화에서 일반 성분은 사육 일령이 증가할수록 수분은 감소하였으며, 단백질은 사육 일령이 증가할수록 감소하였으나, 상대적으로 지방 함량은 증가하였다. 닭고기의 무기물 중에서 Ca의 함량은 사육 일령에 따라서 일정한 경향을 나타내지 않았으나, P는 사육 일령이 경과함에 따라 감소하는 경향을 나타내었다. 맛과 관련이 있는 핵산 물질의 inosine은 사육 일령이 경과할수록 증가하는 경향을 나타내었으나 유의적인 차이는 없었다(p<0.05). 이러한 경향은 다리살에서도 비슷하게 나타내었다. 닭고기의 명도 값($L^*$)은 사육 일령이 증가할수록 조금씩 어두워져 42일령 대형닭고기에서는 가장 어두운 값을 나타내었다. 그러나 황색도($b^*$)는 사육 일령이 증가할수록 더 진한 황색도를 나타내었다. 닭고기의 물리적 특성에서는 사육 일령이 증가할수록 가열 감량은 감소하였으나 전단력은 사육 일령이 증가할수록 증가하였다.

This study was conducted to investigate the effect of different raising days (30, 36, 42) on physico-chemical meat quality properties of chicken breasts and legs stard with 1 day old. In chemical compositions, moisture and protein contents (%) were decreased whereas fat contents (%) were increased as the raising days. In mineral contents, there was not significantly different in calcium contents. However, there was a decrease of potassium contents (p<0.05) as raising periods increased. Nucleotide-related compounds were 121.0 mg/100 g at 30 day, 130.4 at 36 day and 131.2 at 42 day, respectively. However, they were not significantly different during the raising periods (p<0.05). The similar tendency was observed in leg parts. $L^*$ values were decreased especially for chicken raised for 42 days. $b^*$ values were gradually increased as the raising periods increased. Cooking loss (%) was decreased whereas Warner-Bratzler shear forces (WBS) were increased as the raising periods increased.

키워드

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  1. Comparison of Physicochemical Characteristics of the Meat in Four Lines of Korean Native Chickens vol.42, pp.4, 2015, https://doi.org/10.5536/KJPS.2015.42.4.335
  2. Comparison of Physiological Changes in Broiler Chicken Fed with Dietary Processed Sulfur vol.20, pp.2, 2013, https://doi.org/10.11002/kjfp.2013.20.2.278
  3. Growth Performance, Carcass Yield, and Quality and Chemical Traits of Meat from Commercial Korean Native Ducks with 2-Way Crossbreeding vol.28, pp.3, 2015, https://doi.org/10.5713/ajas.13.0620
  4. Quality Characteristics of Breast Meat during Post-mortem Storage of Chicken Meat vol.42, pp.4, 2015, https://doi.org/10.5536/KJPS.2015.42.4.347
  5. Chemical Compositions of the Four Lines of Korean Native Chickens vol.43, pp.2, 2016, https://doi.org/10.5536/KJPS.2016.43.2.119
  6. The effects of Bacillus coagulans-fermented and non-fermented Ginkgo biloba on abdominal fat deposition and meat quality of Peking duck vol.96, pp.7, 2017, https://doi.org/10.3382/ps/pex017
  7. Comparison of Chemical Composition and Immune-enhancing Activity of the Four Lines of Korean Native Chickens vol.43, pp.3, 2016, https://doi.org/10.5536/KJPS.2016.43.3.135