Rearing characteristics of fattening Hanwoo steers managed in different stocking densities
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Objective: This study was conducted to analyze the effects of stocking density on growth and carcass quality, and behavior of Hanwoo cattle to conform with global trends, targeting animal welfare production through the practice of environmentally friendly condition. Methods: Thirty six steers were randomly assigned to three treatment groups (C: 5 heads, T1: 4 heads, T2: 3 heads) and reared in separate pens with a constant stocking density of 50 m2 (C: 10 m2/head, T1: 12.5 m2/head, T2: 16.67 m2/head) per group from 12 to 30 month of age. Growth performance, behavior and carcass quality traits of each steer were recorded and compared between the treatment groups. Results: In general, the average daily gain during the fattening period was lower in group T2 than in T1 and the control groups. However, carcass weight and dressing percentage was lower in the control group than in T1 or T2 groups (p<0.05). Also, marbling score at 30 months of age was the lowest in the control group (p<0.05), while the three heads group (T2) had the greatest longissimus muscle area and marbling score (p<0.05). The behavior of walking time was the greatest in T2 group, while self-grooming and fighting occurred with the most frequency in the control group (p<0.05). Conclusion: Our results show that the steers in more spacious stocking density had better carcass quality and wellbeing related behaviors, indicating that a lower density has a positive effect on raising management and carcass quality. Thus it is a need to install appropriate pens fitted to welfare-oriented management practices from growing to fattening period in Hanwoo cattle.
Abstract
Objective: This study was conducted to analyze the effects of stocking density on growth and carcass quality, and behavior of Hanwoo cattle to conform with global trends, targeting animal welfare production through the practice of environmentally friendly condition. Methods: Thirty six steers were randomly assigned to three treatment groups (C: 5 heads, T1: 4 heads, T2: 3 heads) and reared in separate pens with a constant stocking density of 50 m2 (C: 10 m2/head, T1: 12.5 m2/head, T2: 16.67 m2/head) per group from 12 to 30 month of age. Growth performance, behavior and carcass quality traits of each steer were recorded and compared between the treatment groups. Results: In general, the average daily gain during the fattening period was lower in group T2 than in T1 and the control groups. However, carcass weight and dressing percentage was lower in the control group than in T1 or T2 groups (p<0.05). Also, marbling score at 30 months of age was the lowest in the control group (p<0.05), while the three heads group (T2) had the greatest longissimus muscle area and marbling score (p<0.05). The behavior of walking time was the greatest in T2 group, while self-grooming and fighting occurred with the most frequency in the control group (p<0.05). Conclusion: Our results show that the steers in more spacious stocking density had better carcass quality and wellbeing related behaviors, indicating that a lower density has a positive effect on raising management and carcass quality. Thus it is a need to install appropriate pens fitted to welfare-oriented management practices from growing to fattening period in Hanwoo cattle.
참고문헌 (30)
- M. Irie, "Vitamins A and E in Carcass Fat from Japanese Black and F1 Cross Cattle", Animal Bioscience, 19(9), pp.1266~1270 (2006), 아세아·태평양축산학회
- 하재정, "사육공간의 넓이차이가 한우의 사양성적, 행동특성 및 혈액성상에 미치는 영향", 농업생명과학연구, 50(2), pp.83~94 (2016), 농업생명과학연구원[DOI]
- Morrison RS, "The effect of restricting pen space and feeder availability on the behaviour and growth performance of entire male growing pigs in deep-litter, large group housing system", Appl Anim Behav Sci, 83, pp.163~176 (2001)
- Dougherty WJ, "Phosphorus fertilizer and grazing management effects on phosphorus in runoff from dairy pastures", J Environ Qual, 37, pp.417~428 (2008)
- 하재정, "한우 거세우의 계절 및 군 두수별 행동 특성", 축산시설환경학회지, 14(1), pp.9~14 (2008), (사)한국축산환경학회
- 양가영, "한우 거세우의 군집크기에 따른 행동 비교", 동물자원연구, 26(2), pp.128~134 (2015), 동물생명과학연구소
- 김주헌, "Effect of space allowance on the Growth Performance, Behavioral Characteristics, and Blood Properties of Hanwoo", 농업생명과학연구, 49(3), pp.113~121 (2015), 농업생명과학연구원[DOI]
- 안규철, "Characteristics of Sawdust and Cocopeat Beddings, and Their Usefulness According to the Fan and Pen Location for Rearing Hanwoo Cattle", Animal Bioscience, 29(3), pp.444~454 (2016), 아세아·태평양축산학회[DOI]
- 연성찬, "한우 거세우의 사회 행동에 공간 허용이 미치는 영향", 대한수의학회지, 45(2), pp.245~250 (2005), 대한수의학회
- AOAC (Association of official analytical chemists), "Official methods of analysis", AOAC International, ~ (1995)
- NLCF, "Korean carcass grading standard", National Livestock Cooperatives Federation, ~ (2004)
- Sato S, "Social licking patterns in cattle (Bos taurus): Influence of environmental and social factors", Appl Anim Behav Sci, 32, pp.3~12 (1991)
- SAS, "SAS user’s guide: Statistics, 9.2 ed", SAS Inst. Inc, ~ (2003)
- Boe KE, "Grouping and social preferences in calves, heifers and cows", Appl Anim Behav Sci, 80, pp.175~190 (2003)
- Rind MI, "The effects of group size on the ingestive and social behavior of grazing dairy cows", Anim Sci, 68, pp.589~596 (1998)
- S. G. Li, "Growth, Behavior, and Carcass Traits of Fattening Hanwoo (Korean Native Cattle) Steers Managed in Different Group Sizes", Animal Bioscience, 23(7), pp.952~959 (2010), 아세아·태평양축산학회
- Berg RT, "New concept of cattle growth", pp.35~83 (1976), CRC Press
- 강수원, "Holstein, 한우 및 교잡종 거세우의 발육능력과 사료이용성 및 도체특성 비교 연구", 한국축산학회지, 47(2), pp.243~252 (2005), 한국축산학회
- Sung Ki Lee, "Effects of Tethering and Loose Housing on the Meat Quality of Hanwoo Bulls", Animal Bioscience, 21(12), pp.1807~1814 (2008), 아세아·태평양축산학회
- KOSIS, "Korean Statistical Information Service: Livestock grade determination statistics", Statistics Korea, ~ (2016)
- 이상무, "거세 한우 육성우 사육밀도가 채식행동에 미치는 영향", 한국축산학회지, 53(5), pp.489~496 (2011), 한국축산학회
- Kim HC, "A study on estimation of carcass traits in live Hanwoo by using the ultrasonic scanning method", Korea J Anim Sci, 37, pp.336~340 (1995)
- Hiroyuki K, "Nitric oxide suppresses preadipocyte differentiation in 3T3-L1 culture", Mol Cell Biochem, 300, pp.61~67 (2007)
- Houpt KA, "Frequency of masturbation and time budgets of dairy bulls used for semen production", Appl Anim Behav Sci, 24, pp.217~225 (1989)
- KSAST, "Korean cattle consulting guidelines", pp.223~262 (2009), J Anim Sci Technol Press
- 김나연, "Behavioral characteristics of Hanwoo (Bos taurus coreanae) steers at different growth stages and seasons", Animal Bioscience, 30(10), pp.1486~1494 (2017), 아세아·태평양축산학회[DOI]
- Ishi K, "Introduction of cattle behavior", pp.18~56 (1986), Central Livestock Association Press
- Kondo S, "Changes in activity, spatial pattern and social behavior in calves after grouping", Appl Anim Ethol, 11, pp.217~228 (1984)
- Zeeb K, "Social stress in domestic animals", pp.275~281 (1988), Kluwer Academic Publishers
- Jensen MB, "Effect of housing in different social enviroments on open-field and social responses of female dairy calves", Acta Agric Scand Sect A-Anim Sci, 19, pp.113~120 (1999)