This study was conducted to investigate the effects of dietary digestible energy (DE) and digestible lysine/DE ratio (DLys/DE) on growth performance and carcass quality of Landrace ? Rongchang crossbred growing pigs. A total of 144 healthy crossbred pigs with an initial body weight of 27.05 kg were blocked by body weight and gender, and were allotted to 36 pens (4 pigs per pen), and pens were assigned randomly within blocks to dietary treatments arranged in a 2 ? 3 factorial design, with two levels of DE (13.00 or 14.50 MJ/kg) and three DLys/DE (0.50, 0.60, or 0.70 g/MJ). For this experiment, these indices were determined such as growth performance, carcass trait, meat quality and serum biochemical indices. The results showed as follows: increasing DE level increased average daily gain (ADG) (P<0.05), carcass weight (P<0.05), dressing percentage (P<0.05), the contents of urea nitrogen (UN) (P<0.05) and low-density lipoprotein cholesterol (LDL-C) (P=0.07) in serum, and decreased feed to gain ratio (F/G) (P<0.05), average daily feed intake (ADFI) (P<0.05), drip loss (P<0.05) and triglyceride (TG) content in serum (P=0.06). With DLys/DE increasing, loin muscle area (P<0.05), the contents of UN and high-density lipoprotein cholesterol (HDL-C) in serum (P<0.05) and F/G (P=0.05) were increased, and intramuscular fat (IMF) content (P<0.05) and average backfat thickness (P=0.09) were decreased. DE譊Lys/DE interactions were observed in lean meat percentage, UN content and muscle pH45 min and pH24 h (P<0.05). Under the same amino acid pattern condition, the results suggest that dietary DE and DLys levels affect growth performance and carcass quality of growing pigs, and those for optimal performance and carcass quality are 14.50 MJ/kg and 0.73%, respectively.
ZOU Tiande
,
MAO Xiangbing
,
YU Bing
,
HE Jun
,
ZHENG Ping
,
YU Jie
,
HAN Guoquan
,
HUANG Zhiqing
,
CHEN Daiwen
. Effects of Dietary Digestive Energy and Digestible Lysine Level on Growth Performance and Carcass Quality of Landrace ? Rongchang Crossbred Growing Pigs[J]. Chinese Journal of Animal Nutrition, 2012
, 24(12)
: 2498
-2506
.
DOI: 10.3969/j.issn.1006-267x.2012.12.026
[1] 李凤娜.赖氨酸和消化能水平对荣昌猪生产性能和肉品质的影响 .硕士学位论文.长沙:湖南农业大学,2006.
[2] 岳涛,尹靖东,李凤娜,等.日粮赖氨酸和消化能水平对荣昌猪生产性能和胴体品质的影响[J].中国畜牧杂志,2007,43(9):18-21.
[3] 张曦,赵素梅,葛长荣,等.乌金猪日粮能量水平对生长性能和胴体品质的影响[J].动物营养学报,2008,20(5):489-500.
[4] 中华人民共和国农业部.NY/T 825—2004瘦肉型猪胴体性状测定技术规范[S].北京:中国农业出版社,2004.
[5] 中华人民共和国农业部.NY/T 821—2004猪肌肉品质测定技术规范[S].北京:中国农业出版社,2004.
[6] 蔡传江,王立贤,赵克斌,等.降低日粮赖氨酸净能比对育肥猪生产性能及肉品质的影响[J].动物营养学报,2010,22(4):856-862.
[7] SMITH J W,TOKACH M D,O’QUINN P R,et al.Effects of dietary energy density and lysine:calorie ratio on growth performance and carcass characteristics of growing-finishing pigs[J].Journal of Animal Science,1999,77:3007-3015.
[8] BEAULIEU A D,WILLIAMS N H,PATIENCE J F.Response to dietary digestible energy concentration in growing pigs fed cereal grain-based diets[J].Journal of Animal Science,2009,87:965-976.
[9] ZENG Z,YU B,MAO X B,et al.Effects of dietary digestible energy concentration on growth,meat quality,and PPARγ gene expression in muscle and adipose tissues of Rongchang piglets[J].Meat Science,2012,90:66-70.
[10] CASTELL A G,CLIPLEF R L,POSTE-FLYNN L M,et al.Performance,carcass and pork characteristics of castrates and gilts self-fed diets differing in protein content and lysine:energy ratio[J].Canadian Journal of Animal Science,1994,74:519-528.
[11] MAIN R G,DRITZ S S,TOKACH M D,et al.Determining an optimum lysine:calorie ratio for barrows and gilts in a commercial finishing facility[J].Journal of Animal Science,2008,86:2190-2207.
[12] SZAB C,JANSMAN A J M,BABINSZKY L,et al.Effect of dietary protein source and lysine:DE ratio on growth performance,meat quality,and body composition of growing-finishing pigs[J].Journal of Animal Science,2001,79:2857-2865.
[13] NAM D S,AHERNE F X.The Effects of lysine:energy ratio on the performance of weanling pigs[J].Journal of Animal Science,1994,72:1247-1256.
[14] COMA J,ZIMMERMAN D R,CARRION D.Relationship of rate of lean tissue growth and other factors to concentration of urea in plasma of pigs[J].Journal of Animal Science,1995,73(12):3694-3656.
[15] KERR B J,SOUTHERN L L,BIDNER T D,et al.Influence of dietary protein level,amino acid supplementation,and dietary energy levels on growing-finishing pig performance and carcass composition[J].Journal of Animal Science,2003,81:3075-3087.
[16] APPLE J K,MAXWELL C V,BROWN D C,et al.Effect of dietary lysine and energy density on performance and carcass characteristics of finishing pigs fed ractopamine[J].Journal of Animal Science,2004,82:3277-3287.
[17] FRIESEN K G,NELSSEN J L,GOODBAND R D,et al.Influence of dietary lysine on growth and carcass composition of high-lean-growth gilt fed from 34 to 72 kilograms[J].Journal of Animal Science,1994,72:1761-1770.
[18] MOHN S,GILLIS A M,MOUGHAN P J,et al.Influence of dietary lysine and energy intakes on body protein deposition and lysine utilization in the growing pig[J].Journal of Animal Science,2000,78:1510-1519.
[19] BLANCHARD P J,ELLIS M,WARKUP C C,et al.The influence of rate of lean and fat tissue development on pork eating quality[J].Journal of Animal Science,1999,68:477-485.
[20] GONDRET F,LEBRET B.Feeding intensity and dietary protein level affect adipocyte cellularity and lipogenic capacity of muscle homogenates in growing pigs,without modification of the expression of sterol regulatory element blinding protein[J].Journal of Animal Science,2002,80:3184-3193.
[21] 曾真,陈代文,毛湘冰,等.饲粮消化能水平对荣昌烤乳猪品系生产性能及脂肪代谢的影响[J].动物营养学报,2011,23(9):1490-1498.
[22] 晁金.日粮能量浓度对肥育猪脂肪组织中脂肪沉积相关指标的影响 .硕士学位论文.武汉:武汉工业学院,2009.
