Effects of genetic selection and threonine on meat quality in Pekin ducks.
Effects of genetic selection and threonine on meat quality in Pekin ducks.
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遗传选择和苏氨酸对北京鸭肉品质的影响
DOI：
10.1016/j.psj.2019.10.059
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发表时间：
2020-05
期刊：
影响因子：
4.4
通讯作者：
Hou S
中科院分区：
文献类型：
--
作者：
Jiang Y;Xie M;Tang J;Zhou Z;Zhang Y;Chen G;Hou S
本试验旨在研究遗传选择和苏氨酸水平对北京鸭肉品质的影响。15日龄时，选取192只瘦肉鸭和192只肥肉鸭，分别分为3个处理，每处理8个重复，体重相近（8只/笼）。15 ~ 35日龄，饲喂苏氨酸添加量分别为0.00、0.15和0.30%的试验饲粮21 D。结果表明：肥肉鸭采食量、料重比、腹脂率和皮脂率均高于瘦肉鸭（P < 0.001），胸肌率低于瘦肉鸭（P = 0.001）。肥型鸭和瘦型鸭增重和体重相近。饲粮中添加苏氨酸改善了瘦肉型鸭的生长性能（P < 0.05），提高了胸肌率（P < 0.05），对肥肉型鸭的生长性能和胸肌率无显著影响（P < 0.05）。瘦肉鸭肝脏总脂、甘油三酯、胆固醇和血浆低密度脂蛋白胆固醇含量较高（P < 0.001），饲粮中添加苏氨酸降低了瘦肉鸭肝脏总脂、胆固醇和甘油三酯含量（P < 0.05），对肥肉鸭肝脏脂含量无显著影响（P < 0.05）。瘦肉鸭肝脏中单不饱和脂肪酸（MUFA）、c18 -多不饱和脂肪酸（PUFA）、胸肌中PUFA、血浆中C18:3n6和C18:3n3浓度均高于肥肉鸭（P < 0.05），肝脏中C20-PUFA、C22-PUFA和血浆中MUFA浓度低于肥肉鸭（P < 0.05）。添加苏氨酸增加了瘦肉鸭血浆和肝脏脂肪酸谱中的PUFA、N3-PUFA和n6-PUFA (P > 0.05)，但对肥肉鸭肝脏、胸肌和血浆中的总MUFA和总PUFA没有影响（P > 0.05）。综上所述，遗传选择和补充苏氨酸增加了肉制品产量和PUFA含量，虽然会影响食用品质，但对人体健康有益。
The present study was conducted to investigate the effects of genetic selection and threonine levels on meat quality in Pekin ducks. At 15 D of age, 192 lean ducks and 192 fatty ducks were selected and allotted to one of three treatments with 8 replicates with similar BW (8 ducks/cage), respectively. All ducks were fed the experimental diets (0.00, 0.15, and 0.30% added threonine) for 21 D from 15 to 35 D of age. The results showed that fatty ducks had higher (P < 0.001) feed intake, feed/gain ratio, abdominal fat percentage, and sebum percentage and lower (P = 0.001) breast muscle percentage compared with that of lean ducks. The fatty-type and lean-type ducks had similar weight gain and BW. Dietary threonine supplementation improved (P < 0.05) growth performance and increased breast muscle percentage in lean-type ducks, but it did not affect (P > 0.05) those indices in fatty-type ducks. Lean ducks had higher (P < 0.001) hepatic contents of total lipids, triglyceride, cholesterol, and plasma low-density lipoprotein cholesterol concentration, and dietary threonine supplementation decreased (P < 0.05) hepatic total lipid, cholesterol, and triglyceride contents in lean ducks, but it had no influence on hepatic lipids in fatty ducks (P > 0.05). Lean ducks had higher (P < 0.05) concentrations of monounsaturated fatty acid (MUFA), and C18-polyunsaturated fatty acid (PUFA) in the liver, PUFA in the breast muscle, and C18:3n6 and C18:3n3 in plasma and lower C20-PUFA and C22-PUFA in the liver and MUFA in plasma, compared with fatty ducks. Threonine supplementation increased PUFA, N3-PUFA, and n6-PUFA in plasma and hepatic fatty acids profiles in lean ducks (P > 0.05) but had on influence on total MUFA and total PUFA in the liver, breast muscle, and plasma in fatty ducks (P > 0.05). In conclusion, genetic selection toward meat production and threonine supplementation increases meat production and PUFA contents, which would influence eating quality, but it is benefit for human health.
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影响因子：
7.1
作者：
CAMERON, ND;ENSER, MB
通讯作者：
ENSER, MB
影响因子：
3.3
作者：
Palma-Granados, P.;Haro, A.;Nieto, R.
通讯作者：
Nieto, R.
DOI：
10.1152/ajpgi.90545.2008
发表时间：
2009-05-01
影响因子：
4.5
作者：
Ross-Inta, Catherine M.;Zhang, Yi-Fan;Giulivi, Cecilia
通讯作者：
Giulivi, Cecilia
影响因子：
3.6
作者：
Madeira, Marta S.;Pires, Virginia M. R.;Prates, Jose A. M.
通讯作者：
Prates, Jose A. M.
影响因子：
--
作者：
Pires, V. M. R.;Madeira, M. S.;Prates, J. A. M.
通讯作者：
Prates, J. A. M.