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首页> 外文期刊>Italian journal of animal science >Effects of selection for yolk cholesterol on growth and meat quality in Japanese quail (Coturnix coturnix japonica)
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Effects of selection for yolk cholesterol on growth and meat quality in Japanese quail (Coturnix coturnix japonica)

机译：蛋黄胆固醇的选择对日本鹌鹑生长和肉品质的影响（Coturnix coturnix japonica）

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摘要

Descendants (females) of S18 generation of Japanese quails (Coturnix coturnix japonica), selected for low (line 11, n=15) or for high (line 12, n=6) yolk cholesterol content were used for this experiment. The high (12) and low (11) lines were developed from a control egg type (line13) wild color plumage stock 07, from Poultry Breeding Station in Ivanka at Danube (Slovakia) that was maintained without conscious selection. The results of selected lines were compared to this one from unselected lines, egg type (line 13, n=15) and meat type (line 8, n=15), to study productive performance (growth and carcass weight) as well as meat quality traits (intramuscular collagen properties, fatty and cholesterol content). The birds were grown up to 35 days of age. Quails were fed ad libitum with commercial diets according to their ages. Animals had free access to water during the experiment. The body weight of the quails was controlled every week (from week I to 5). At the slaughter (at avg. weight of 104.0, 107.7, 110.6 g vs 209.3 g for lines 11, 12, 13 vs 8, respectively; P<0.05) the hot carcass weight was recorded and dressing percentage was calculated. Pectoralis superficialis muscles were removed from the carcasses to assess intramuscular collagen (IMC) properties (collagen and crosslink concentrations), intramuscular lipid and cholesterol contents. Growth and slaughter performance, intramuscular fat percentage and IMC properties of Pectoralis superficialis were not different between the birds selected for low (line 11) and high (line 12) yolk cholesterol content and were also found to be similar between the quails of egg type and those selected for yolk cholesterol content (lines 11 and 12). Compared to the birds of egg type line and those selected for yolk cholesterol content, the quails of meat type had higher growth and carcass traits (P<0.05), while meat quality traits were found to be similar. The meat of the quails selected for low cholesterol in the egg yolk (line 11) had lower (P<0.05) cholesterol (-35.9%) than that of the birds characterized by high cholesterol in the egg yolk (line 12). In conclusion, divergent selection for yolk cholesterol content did not significantly influence growth and slaughter traits, intramuscular fat and IMC properties of Japanese quail, while it affected the amount of cholesterol in meat. The quails of meat type showed the highest growth and slaughter traits.
机译：本实验使用的是S18代日本鹌鹑（雌性Coturnix coturnix japonica）的后代（雌性），卵黄胆固醇含量低（第11行，n = 15）或高（第12行，n = 6）。高（12）和低（11）品系由来自多瑙河（斯洛伐克）伊万卡的家禽育种站的对照卵型（13品系）野生色羽毛原料07培育而来，无意识地进行了选择。将所选品系的结果与未选择品系的蛋类（第13行，n = 15）和肉类（第8行，n = 15）进行比较，以研究生产性能（生长和car体重量）以及肉质量特征（肌肉内胶原蛋白特性，脂肪和胆固醇含量）。这些鸟长到35天大。根据年龄，为鹌鹑随意提供商业饮食。实验期间动物可以自由饮水。每周（从第一周到第五周）控制鹌鹑的体重。在屠宰时（第11、12、13和8行的平均重量分别为104.0、107.7、110.6 g和209.3 g; P <0.05）记录热car体重量并计算出修整率。从the体上摘除胸大肌，以评估肌内胶原蛋白（IMC）特性（胶原蛋白和交联浓度），肌内脂质和胆固醇含量。在选择低（第11行）和高（第12行）蛋黄胆固醇含量的鸡之间，胸大肌的生长和屠宰性能，肌内脂肪百分比和IMC特性没有差异，并且在蛋型和蛋型鹌鹑之间也相似。根据蛋黄胆固醇含量选择的那些（第11和12行）。与蛋型品系和选择卵黄胆固醇含量的家禽相比，肉类鹌鹑的生长和and体性状较高（P <0.05），而肉质性状相似。被选为蛋黄中低胆固醇的鹌鹑的肉（第11行）比以蛋黄中高胆固醇为特征的鸟（第12行）的胆固醇低（P <0.05）（-35.9％）。总之，蛋黄胆固醇含量的不同选择不会显着影响日本鹌鹑的生长和屠宰性状，肌内脂肪和IMC特性，但会影响肉中胆固醇的含量。肉类鹌鹑显示出最高的生长和屠宰性状。

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