Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Institutes of Agricultural Science and Technology Development, Yangzhou University, Jiangsu Yangzhou 225009, China.
Key Laboratory of Animal Genetics and Breeding and Molecular Design of Jiangsu Province, Yangzhou University, Yangzhou 225009, China.
Poult Sci. 2022 Jan;101(1):101520. doi: 10.1016/j.psj.2021.101520. Epub 2021 Oct 11.
This study was performed to evaluate the effects of different rearing methods on the growth performance, carcass yield, and meat quality of small-sized meat ducks. A total of 420 healthy 21-day-old birds was randomly allocated to 2 treatment groups (6 replicates per treatment, sex ratio 1/1) and subjected to 2 rearing methods (furnished cage and plastic wire-floor) until d 63. Growth performance was measured in all birds. Three males and 3 females from each replicate were randomly selected and evaluated to determine the carcass yield and meat quality. In terms of growth performance, the rearing method affected the final body weight, average daily feed intake, and average daily gain, which were higher in the cage group (P < 0.05) than in the floor group, with a similar feed/gain in both groups. For slaughter performance, ducks in the cage group showed a higher abdominal fat yield and lower gizzard yield than those in the floor group (P < 0.05). For meat quality, the L* value of the breast muscle was higher in the cage group than in the floor group (P < 0.05). The pH recorded at 1 h was lower and pH recorded at 24 h was higher in the cage group (P < 0.05). The shear force and water loss rate were both lower in the cage group (P < 0.05). Additionally, the moisture content was lower and intramuscular fat content was higher in ducks fed in cages (P < 0.05). Our results indicate that the cage rearing system improved the growth performance and meat quality of ducks, which is appropriate for small-sized meat ducks.
本研究旨在评估不同饲养方式对小型肉鸭生长性能、屠体产率和肉质的影响。将 420 只健康的 21 日龄雏鸭随机分为 2 个处理组（每个处理 6 个重复，雌雄比例 1/1），分别采用笼养和塑料网床饲养至 63 日龄。所有雏鸭均进行生长性能测定。每个重复随机选择 3 只公鸭和 3 只母鸭进行屠体产率和肉质评定。在生长性能方面，饲养方式影响了末重、平均日采食量和平均日增重，笼养组均显著高于网床组（P < 0.05），但两组的料重比相似。在屠宰性能方面，笼养组的腹脂产率高于网床组，而肌胃产率则低于网床组（P < 0.05）。在肉质方面，笼养组的胸肌肉 L*值显著高于网床组（P < 0.05）。笼养组的 1 h pH 值显著低于网床组，24 h pH 值显著高于网床组（P < 0.05）。笼养组的剪切力和失水率均显著低于网床组（P < 0.05）。此外，笼养组的水分含量较低，肌内脂肪含量较高（P < 0.05）。研究结果表明，笼养系统提高了肉鸭的生长性能和肉质，适合小型肉鸭。
