Long Shenfei, Xu Yetong, Wang Chunlin, Li Changlian, Liu Dewen, Piao Xiangshu
State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China.
Shandong Zhongda Agriculture Science and Technology Co. Ltd., Binzhou 256600, China.
Asian-Australas J Anim Sci. 2018 Nov;31(11):1773-1780. doi: 10.5713/ajas.18.0056. Epub 2018 Apr 12.
This study was to evaluate effects of mixed plant oils (identified as mixed oil 1 [MO1] and mixed oil 2 [MO2]) on performance, serum composition, viscera percentages, meat quality, and fatty acid deposition of broilers.
A total of 126 one-day-old Arbor Acres male broiler chicks (weighing 44.91±0.92 g) were randomly allocated to 1 of 3 treatments with 7 replicate pens per treatment (6 broilers per pen). Dietary treatments included a corn-soybean basal diet supplemented with 3% soybean oil (CTR), basal diet with 3% MO1 (a mixture of 15% corn oil, 10% coconut oil, 15% linseed oil, 20% palm oil, 15% peanut oil and 25% soybean oil; MO1), or basal diet with 3% MO2 (a combination of 50% MO1 and 50% extruded corn; MO2). The trial consisted of phase 1 (d 1 to 21) and phase 2 (d 22 to 42).
Compared to CTR, broilers fed MO (MO1 or MO2) had greater (p<0.05) average daily gain in phase 1, 2, and overall (d 1 to 42), redness in thigh muscle, concentrations of serum glucose, serum albumin, saturated fatty acids (SFA) and n-6/n-3 polyunsaturated fatty acids (PUFA) ratio in breast muscle, while these broilers also showed lower (p≤0.05) drip loss and concentrations of C18:3n-3 and PUFA/SFA ratio in breast muscle. Broilers fed MO2 had higher (p<0.05) liver percentage, while broilers fed MO1 had lower (p≤0.05) feed conversion ratio in phase 1 and increased (p<0.05) contents of C18:2n-6, C20:5n-3, C22:6n-3, and n-3 PUFA in breast muscle compared to CTR.
Mixed plant oils had positive effects on performance, serum parameters, meat quality, liver percentage and fatty acid deposition in broilers, which indicates they can be used as better dietary energy feedstocks than soybean oil alone.
本研究旨在评估混合植物油（分别为混合油1 [MO1] 和混合油2 [MO2]）对肉鸡生长性能、血清成分、内脏器官比例、肉质及脂肪酸沉积的影响。
选取126只1日龄的艾维茵雄性肉鸡雏鸡（体重44.91±0.92克），随机分为3组，每组7个重复栏（每栏6只肉鸡）。日粮处理包括：在玉米 - 大豆基础日粮中添加3%大豆油（对照组）；基础日粮中添加3% MO1（由15%玉米油、10%椰子油、15%亚麻籽油、20%棕榈油、15%花生油和25%大豆油混合而成；MO1）；基础日粮中添加3% MO2（由50% MO1和50%挤压玉米混合而成；MO2）。试验分为1期（第1至21天）和2期（第22至42天）。
与对照组相比，采食MO（MO1或MO2）的肉鸡在第1期、第2期及全期（第1至42天）平均日增重更高（p<0.05），大腿肌肉红色更深，血清葡萄糖、血清白蛋白、饱和脂肪酸（SFA）浓度及胸肌中n-6/n-3多不饱和脂肪酸（PUFA）比值更高，同时这些肉鸡的滴水损失及胸肌中C18:3n-3浓度和PUFA/SFA比值更低（p≤0.05）。采食MO2的肉鸡肝脏比例更高（p<0.05），而采食MO1的肉鸡在第1期饲料转化率更低（p≤0.05），且与对照组相比，胸肌中C18:2n-6、C20:5n-3、C22:6n-3及n-3 PUFA含量增加（p<0.05）。
混合植物油对肉鸡的生长性能、血清参数、肉质、肝脏比例及脂肪酸沉积具有积极影响，这表明它们可作为比单独使用大豆油更好的日粮能量原料。
