动物营养学报2017，Vol.29Issue(6)：2108-2115,8.DOI:10.3969/j.issn.1006-267x.2017.06.033
包膜酸化剂和小肽螯合铁及其互作对38~44周龄蛋鸡夏季产蛋性能、蛋品质及血清生化指标的影响
Effects of Coated Acidifier and Small Peptide Chelated Iron and Their Interaction on Laying Performance, Egg Quality and Serum Biochemical Parameters of 38-to 44-Week-Old Laying Hens in Summer
摘要
Abstract
This experiment was conducted to evaluate the effects of coated acidifier and small peptide chelated iron and their interaction on laying performance, egg quality and serum biochemical parameters of 38-to 44-week-old laying hens in summer.A 2×4 factorial completely randomized design was adopted with 2 supplemental levels (0 and 300 mg/kg)of coated acidifier and 4 supplemental levels (0, 0.04%, 0.08% and 0.12%)of small peptide chelated iron in the basal diet.A total of 576 healthy Lohmann pink-shell laying hens (38-week-old) were randomly allotted to 8 groups with 6 replicates of 12 hens per replicate.The hens in groups A, B, C and D were fed the basal diet supplemented with 0 mg/kg coated acidifier and 0 (control group), 0.04%, 0.08% or 0.12% small peptide chelated iron (the content of iron was 0, 60, 120 and 180 mg/kg, respectively), and those in groups E, F, G and H were fed the basal diet supplemented with 300 mg/kg coated acidifier and 0, 0.04%, 0.08% or 0.12% small peptide chelated iron (the content of iron was 0, 60, 120 and 180 mg/kg, respectively).The adjustment period lasted for 1 week, and the experimental period lasted for 6 weeks.The results showed as follows: 1) coated acidifier and the interaction of coated acidifier and small peptide chelated iron had a significant effect on Haugh unit (P<0.05).Total egg number in groups B and H was increased by 4.57% and 4.45%, respectively, compared with control group (P>0.05).Egg shell thickness in group F was significantly higher than that in control group (P<0.05).Feed to egg ratio in groups B and H was significantly higher than that in group G (P<0.05).Haugh unit in groups E, F and G was significantly higher than that in group D (P<0.05).2) Coated acidifier had no significant effects on serum biochemical parameters (P>0.05).Small peptide chelated iron had significant effects on serum calcium, phosphorus and iron contents (P<0.05).The combination of coated acidifier and small peptide chelated iron had significant effects on serum total cholesterol, calcium and phosphorus contents (P<0.05).Serum alkaline phosphatase activity in group D was significantly lower than that in control group (P<0.05).Serum total cholesterol content in group H was significantly lower than that in groups B and C (P<0.05), and was decreased by 15.48% compared with control group (P>0.05).Serum calcium content in groups B and F was significantly higher than that in group E (P<0.05).Serum phosphorus content in group C was significantly higher than that in group E (P<0.05).Serum iron content in group C was significantly higher than that in control group and groups E and H (P<0.05).In conclusion, adding 0.04% small peptide chelated iron alone or combined with 300 mg/kg coated acidifier are beneficial to improve the laying performance, egg quality and serum biochemical parameters of 38-to 44-week-old laying hens in summer.关键词
产蛋鸡/包膜酸化剂/小肽螯合铁/产蛋性能/蛋品质/血清生化指标Key words
laying hens/coated acidifier/small peptide chelated iron/laying performance/egg quality/serum biochemical parameters分类
农业科技引用本文复制引用
罗玲,曲湘勇,韩奇鹏,彭豫东,彭灿阳,曹冬梅,孙安权..包膜酸化剂和小肽螯合铁及其互作对38~44周龄蛋鸡夏季产蛋性能、蛋品质及血清生化指标的影响[J].动物营养学报,2017,29(6):2108-2115,8.基金项目
湖南农业大学产学研合作项目(11110,13098) （11110,13098）
