动物营养学报2019，Vol.31Issue(2)：638-651,14.DOI:10.3969/j.issn.1006-267x.2019.02.020
种鸡及子代肉仔鸡饲粮添加外源肌苷酸对子代肉仔鸡生长性能、肉品质及相关基因表达的影响
Effects of Adding Exogenous Inosinic Acid in Diets of Breeding Hens and Offspring Broilers on Growth Performance, Meat Quality and Related Gene Expression of Offspring Broilers
摘要
Abstract
The objective of this study was to investigate the effects of adding exogenous inosinic acid ( IMP) in diets of breeding hens and offspring broilers on growth performance, meat quality and related gene expression of offspring broilers. A total of 864 Arbor Acres ( AA) breeding hens ( 20-week-old) with similar genetic background, weight and 5% egg production rate were randomly divided into 2 groups with 6 replicates in each group and 72 broilers in each replicate. Hens in the control group were fed a basic diet, and the others in the experimental group were fed the basic diet supplemented with 0.5% inosinic acid. The experiment lasted for 30 days. One week before the end of the experiment, the laying rate of hens reached the peak, a total of 3 700 eggs were continuously collected for 7 days and hatched. After hatching, a total of 3 000 one-day-old broilers were selected and divided into 4 groups according to the maternal group, named II ( mother feed basal diet+0.5% inosinic acid, offspring feed basal diet+0.5% inosinic acid) , IN ( mother feed basal diet+0.5% inosinic acid, offspring feed basal diet) , NI ( mother feed basal diet, offspring feed basal diet+0.5% inosinic acid) and NN group ( mother feed basal diet, offspring feed basal diet) , each group had 6 replicates and 125 birds in each replicate. The experiment lasted for 42 days. The results showedas follows: 1) compared with the NN group, the average daily feed intake, average daily gain and feed to gain ratio in II, IN and NI groups were no significant difference ( P>0.05) . 2) Compared with the NN group, the breast muscle rate and leg muscle rate in II, IN and NI groups were no significant difference ( P>0.05) ; the abdominal fat rate in II group was sig-nificantly higher than that in NI group ( P<0. 05) . 3) Compared with the NN group, the values of redness ( a?) and yellowness ( b?) of breast muscle and leg muscle in II, IN and NI groups were no significant differ-ence ( P>0.05) , the breast muscle brightness ( L?) value in II group was significantly decreased ( P<0.05) ;the pH45 min and pH24 h of breast muscle and leg muscle in IN and NI groups were significantly increased ( P<0.05) ; the pH24 h of breast muscle in IN and NI groups was significantly increased ( P<0.05) ; the pH24 h of leg muscle in II, IN and NI groups was significantly increased ( P<0.05) . 4) Compared with the NN group, the relative expression level of glutamine phosphoribosylpyrophosphate amidotransferase ( GPAT) gene of breast muscle and leg muscle in II, IN and NI groups at 21 and 42 days of age was no significant difference ( P>0.05) , the relative expression level of adenylosuccinate lyase ( ADSL) gene of breast muscle in NI group and that of leg muscle in IN group at 21 days of age was significantly increased ( P<0.05) , the relative expression level of ADSL gene of breast muscle in II and IN groups at 42 days of age was significantly increased ( P<0.05) . These results suggest that adding exogenous inosinic acid in diets of breeding hens and offspring broilers have no significant effect on growth performance and slaughter performance of offspring broilers; and can in-crease muscle pH, decrease breast muscle L? value, improve the relative expression of ADSL gene, and im-prove meat quality of offspring broilers to a certain extent. [ Chinese Journal of Animal Nutrition, 2019, 31 (2) :638-651]关键词
肌苷酸/母代效应/生长性能/肉品质Key words
inosinic acid/maternal effect/growth performance/meat quality分类
农业科技引用本文复制引用
周博,闫俊书,吴乐,王樱洁,宦海琳,周维仁,李垚..种鸡及子代肉仔鸡饲粮添加外源肌苷酸对子代肉仔鸡生长性能、肉品质及相关基因表达的影响[J].动物营养学报,2019,31(2):638-651,14.基金项目
国家自然科学基金(31302006) （31302006）
江苏省农业科技自主创新资金[CX(14)5034] （14）
黑龙江省自然科学基金(C2016017) （C2016017）
