Moritz A H, Krombeen S K, Presgraves J, Blair M E, Buresh R E, Bridges W C, Arguelles-Ramos M, Wilmoth T A
Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USA.
United Animal Health, Sheridan, IN 46069, USA.
Anim Biosci. 2022 Dec;35(12):1911-1920. doi: 10.5713/ab.22.0047. Epub 2022 Jun 28.
This study was performed to determine the apparent metabolizable energy (AMEn) content of tannin-free red/bronze, white/tan and U.S. No. 2 varieties of grain sorghum for feeding Japanese quail and validate their nutrient profile by evaluating effects on performance and carcass traits with full-substitution of corn.
Experiment 1 determined the AMEn content of red/bronze, white/tan, and U.S. No. 2 grain sorghum varieties fed to mixed-sex Japanese quail (Coturnix japonica) (n = 314) at 3 and 6-weeks of age. Analyses were based on a 2×4 factorial treatment design with age and grain types defining the treatments, and a randomized complete block experiment design with cage and trials defining the block. AMEn values were validated by evaluating the performance and carcass traits of Japanese quail (n = 644) from 1 to 40 days of age in Experiment 2 with birds were fed 1 of 4 complete diets. Statistical analyses were conducted on performance data and select individual carcass trait measurements.
Determined AMEn values at 3-weeks of age were 3,524±122.03 (red/bronze), 3,252±122.03 (white/tan), and 3,039±123.44 (U.S. No. 2) kcal/kg. At 6-weeks of age, determined AMEn were 3,373±297.35 (red/bronze), 3,279±297.35 (white/tan), and 2,966±298.64 (U.S. No. 2) kcal/kg. Carcass traits showed live body weight (p = 0.0409) and hot carcass weight (p = 0.0234) were greatest in U.S. No. 2; however, carcass yield (p<0.0001) was lowest. No significant differences were observed among treatments for feed intake, feed conversion ratio, breast weight and breast yield (p>0.05).
These studies demonstrated that tannin-free grain sorghum varieties may be a potential alternative to corn in quail diets while maintaining growth performance and carcass parameters.
本研究旨在测定无单宁红/青铜色、白/褐色和美国2号品种高粱对日本鹌鹑的表观代谢能（AMEn）含量，并通过完全替代玉米评估其对生产性能和胴体性状的影响来验证其营养成分。
实验1测定了3周龄和6周龄的混合性别日本鹌鹑（Coturnix japonica）（n = 314）饲喂红/青铜色、白/褐色和美国2号高粱品种的AMEn含量。分析基于2×4析因处理设计，其中年龄和谷物类型定义处理，以及随机完全区组实验设计，其中笼子和试验定义区组。在实验2中，通过评估1至40日龄日本鹌鹑（n = 644）的生产性能和胴体性状来验证AMEn值，这些鹌鹑饲喂4种完全日粮中的1种。对生产性能数据和选定的个体胴体性状测量进行统计分析。
3周龄时测定的AMEn值分别为3524±122.03（红/青铜色）、3252±122.03（白/褐色）和3039±123.44（美国2号）kcal/kg。6周龄时，测定的AMEn分别为3373±297.35（红/青铜色）、3279±297.35（白/褐色）和2966±298.64（美国2号）kcal/kg。胴体性状显示，美国2号的活体重（p = 0.0409）和热胴体重（p = 0.0234）最大；然而，胴体产率（p<0.0001）最低。在采食量、饲料转化率、胸肉重和胸肉产率方面，各处理间未观察到显著差异（p>0.05）。
这些研究表明，无单宁高粱品种在鹌鹑日粮中可能是玉米的潜在替代品，同时能维持生长性能和胴体参数。
