Odutayo Olusola Joshua, Sogunle Olajide Mark, Adeyemi Olajide Ayorinde, Sonibare Adekayode Olanrewaju
Department of Animal Production and Health, College of Animal Science and Livestock Production, Federal University of Agriculture, P. M. B. 2240, Abeokuta, Ogun State, Nigeria.
Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, Federal University of Agriculture, P. M. B. 2240, Abeokuta, Ogun State, Nigeria.
Trop Anim Health Prod. 2020 Sep;52(5):2349-2357. doi: 10.1007/s11250-020-02258-x. Epub 2020 Mar 12.
The demand for animal protein in Nigeria is so high that introduction of new management techniques to improve poultry production is relevant. This study investigated the effects of in ovo administration of arginine on hatching traits and post-hatch performance of FUNAAB-Alpha chickens in two housing types. A total of 528 hatching eggs of FUNAAB-Alpha chickens were used for the study for 11 weeks. Hatching eggs were sorted, balanced for weight and fumigated before setting in the incubator. On the 14th day of incubation 378 eggs were confirmed fertile and they were redistributed into 3 treatment groups (0, 11 and 22 mg of arginine/egg) each consisting 126 eggs, replicated 14 times (9 eggs per replicate). At the 18th day of incubation, in ovo injection of arginine was carried out and at the 21st day of incubation, resulting chicks were balanced for weight, assigned to treatments and assessed for post-hatch performance. The experiment was laid out in a completely randomised design. In the results, hatchability was 92.86% (control), 88.39% (injection with 11 mg of arginine) and 91.07% in birds resulting from in ovo injection of 22 mg of arginine. In ovo injection of 11 and 22 mg of arginine improved the development of duodenal villi in the birds. In ovo injection of 22 and 11 mg of arginine enhanced CMIR after 24 (0.300 mm) and 48 h (0.223 mm) of injecting phytohaemagglutinin type P (PHA-P) antigen. Birds on outdoor run had higher (0.282, 0.224 mm) CMIR after 24 and 48 h of injecting PHA-P relative to those raised in deep litter housing. Birds from in ovo injection of 22 mg of arginine had a significantly lowered daily feed intake (68.38 g/bird) relative to other treatments. Deep litter housing significantly (p < 0.05) improved daily weight gain (25.02 g/bird) of birds as against outdoor run (22.62 g/bird). It was concluded that in ovo injection of 11 or 22 mg of arginine numerically improved hatchability and cell-mediated immune response with enhanced duodenal villi development, while in ovo injection of 22 mg of arginine and raising resulting birds on outdoor run is suitable for achieving significantly lower feed intake with better feed conversion ratio in FUNAAB-Alpha chickens.
尼日利亚对动物蛋白的需求量极高，因此引入新的管理技术以提高家禽产量具有重要意义。本研究调查了在两种饲养方式下，对FUNAAB - Alpha鸡胚内注射精氨酸对孵化性状和出壳后性能的影响。本研究共使用了528枚FUNAAB - Alpha鸡的种蛋，为期11周。种蛋经过挑选、称重平衡并熏蒸后放入孵化器。孵化第14天时，确认有378枚种蛋受精，然后将它们重新分配到3个处理组（每枚蛋分别注射0、11和22毫克精氨酸），每组126枚蛋，重复14次（每个重复9枚蛋）。在孵化第18天时进行胚内精氨酸注射，在孵化第21天时，将出壳的雏鸡称重平衡，分配到各处理组，并评估其出壳后的性能。实验采用完全随机设计。结果显示，孵化率分别为对照组92.86%、注射11毫克精氨酸组88.39%、注射22毫克精氨酸组91.07%。胚内注射11毫克和22毫克精氨酸可促进雏鸡十二指肠绒毛的发育。在注射P型植物血凝素（PHA - P）抗原24小时（0.300毫米）和48小时（0.223毫米）后，胚内注射22毫克和11毫克精氨酸可增强细胞介导免疫反应（CMIR）。与在厚垫料饲养环境中饲养的雏鸡相比，户外放养的雏鸡在注射PHA - P抗原24小时和48小时后的CMIR更高（分别为0.282、0.224毫米）。胚内注射22毫克精氨酸的雏鸡的日采食量（68.38克/只）显著低于其他处理组。与户外放养（22.62克/只）相比，厚垫料饲养显著（p < 0.05）提高了雏鸡的日增重（25.02克/只）。研究得出结论，胚内注射11毫克或22毫克精氨酸在数值上提高了孵化率和细胞介导免疫反应，并促进了十二指肠绒毛的发育，而胚内注射22毫克精氨酸并将雏鸡户外放养，适合在FUNAAB - Alpha鸡中显著降低采食量并提高饲料转化率。
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