动物营养学报2015，Vol.27Issue(7)：2292-2299,8.DOI:10.3969/j.issn.1006-267x.2015.07.037
饲粮维生素 B6 添加水平对生长獭兔生长性能及维生素 B6 代谢的影响
Effects of Dietary Vitamin B6 Supplemental Level on Growth Performance and Vitamin B6 Metabolism of Growing Rex Rabbits
摘要
Abstract
This experiment was conducted to investigate the effects of dietary vitamin B6 supplemental level on growth performance, fur quality, muscle quality and vitamin B6 metabolism of growing Rex rabbits. Two hun-dred 3-month-old healthy Rex rabbits with similar body weight were randomly divided into 5 groups with 40 replicates in each group and each replicate contained 1 rabbit. Rabbits in 5 groups were fed experimental diets containing 0 (control), 5, 10, 20 and 40 mg/kg vitamin B6, respectively. The trial lasted for 7 days for ad-aptation, and 53 days for test. The results showed that dietary vitamin B6 supplemental level had significant in-fluence on average daily gain (ADG) and average daily feed intake (ADFI) (P=0.017 8 and P=0.000 4, respectively) , and the highest values of ADG and ADFI were found when vitamin B6 supplemental level was 20 mg/kg. With the vitamin B6 supplemental level increasing, the feed/gain ( F/G) was firstly decreased and then increased, and it had the lowest value when vitamin B6 supplemental level was 20 mg/kg. Dietary vitamin B6 supplemental level had significant influences on fur weight and fur area ( P=0.040 0 and P=0.001 6, re-spectively) , but had no significant influences on fur thickness and wool length ( P=0.478 0 and P=0.756 2, respectively) . The fur weight and fur area in 20 mg/kg group were significantly higher than those in control group (P<0.05 or P<0.01). Dietary vitamin B6 supplemental level had significant influences on pH (P=0.039 4) , red value ( a?) ( P=0.013 1) , yellow value ( b?) ( P=0.023 9) and light value ( L?) of muscle ( P=0.002 5) . The muscle b? and L? were significantly lower than those in control group ( P<0. 05 or P<0.01) , while the muscle a?was significantly higher than that in control group ( P<0.05) . Dietary vitamin B6 supplemental level had no significant influences on muscle water loss rate and shear force ( P=0.216 1 and P=0.825 9, respectively) . Dietary vitamin B6 supplemental level had no significant influences on vitamin B6 con-tent in muscle, liver and urine ( P=0.028 3, P=0.000 1 and P=0.008 1, respectively) , but had no signifi-cant influence on vitamin B6 content in serum (P=0.112 9). The muscle and liver vitamin B6 contents in 20 mg/kg group were significantly higher than those in control group (P<0.05 or P<0.01). Considering all indexes of this experiment, the appropriate vitamin B6 supplemental level is 20 mg/kg for 3 to 5-month-old growing Rex rabbits.关键词
维生素B6/獭兔/生长性能/皮张质量/肌肉品质Key words
vitamin B6/Rex rabbit/growth performance/fur quality/muscle quality分类
畜牧业引用本文复制引用
刘公言,赵楠,朱岩丽,刘磊,梁才芝,李福昌..饲粮维生素 B6 添加水平对生长獭兔生长性能及维生素 B6 代谢的影响[J].动物营养学报,2015,27(7):2292-2299,8.基金项目
现代农业产业技术体系建设专项(CARS-44-B-1) （CARS-44-B-1）
国家公益性行业(农业)科研专项(2000903006) （农业）
山东省农业重大应用技术创新课题(肉、獭兔高效高产技术研究、集成与推广) （肉、獭兔高效高产技术研究、集成与推广）
