复合有机酸钙对肉鸡生长性能、胫骨发育及血清指标的影响

发布时间：2018-05-10 23:18

本文选题：复合有机酸钙 + 肉鸡　；参考：《动物营养学报》2017年01期

【摘要】：本文旨在研究饲粮中添加复合有机酸钙对肉鸡生长性能、胫骨发育及血清指标的影响,评估复合有机酸钙对肉鸡的饲用效果。试验选取900只体重相近的1日龄健康科宝-500(Cobb-500)肉公鸡,随机分为3个组,每组6个重复,每个重复50只鸡。对照组饲喂玉米-豆粕型基础饲粮,试验1和2组饲喂在基础饲粮中分别添加0.4%和0.8%复合有机酸钙(替换部分无机钙源)的试验饲粮,各组钙、磷水平保持一致,试验期42 d。结果表明:1)与对照组相比,试验1和2组肉鸡在1~21日龄、22~42日龄和1~42日龄的平均日增重(ADG)显著提高(P0.05),料重比(F/G)显著降低(P0.05)。2)与对照组相比,21日龄时,试验1和2组肉鸡的胫骨钙含量显著提高(P0.05);42日龄时,试验1和2组的胫骨长度和钙含量显著提高(P0.05),且试验1组的胫骨灰分含量显著高于对照组和试验2组(P0.05)。3)42日龄时,试验1和2组肉鸡的血清谷草转氨酶(GOT)活性显著低于对照组(P0.05),但试验1组的血清GOT活性与试验2组差异不显著(P0.05)。饲粮中添加复合有机酸钙对21和42日龄肉鸡的血清甲状旁腺激素(PTH)、降钙素(CT)、钙、磷含量以及谷丙转氨酶(GPT)、碱性磷酸酶(AKP)活性均无显著影响(P0.05)。4)饲粮中添加复合有机酸钙对21和42日龄肉鸡的血清总抗氧化能力(T-AOC)、总超氧化物歧化酶(T-SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性以及丙二醛(MDA)含量均无显著影响(P0.05)。由此可见,饲粮中添加复合有机酸钙可改善肉鸡的生长性能,促进胫骨发育,且以添加0.4%的复合有机酸钙饲用效果较好。
[Abstract]:The purpose of this study was to study the effects of dietary calcium compound organic acid on growth performance, tibia development and serum index of broilers, and to evaluate the effect of compound calcium organic acid on feeding of broilers. A total of 900 1-day-old healthy Kebao Cobb-500 broilers with similar body weight were randomly divided into 3 groups with 6 replicates in each group and 50 chickens in each group. The control group was fed with corn-soybean meal basal diet, the experiment group 1 and 2 were fed with 0.4% and 0.8% compound organic calcium acid (replacing part of inorganic calcium source) in the basal diet, the levels of calcium and phosphorus remained the same in each group, and the experiment period was 42 days. The results showed that compared with the control group, the average daily gain (ADG) of groups 1 and 2 were significantly higher than that of the control group (ADG) at the age of 22 ~ 42 days and 1 ~ 42 days of age, and the ratio of feed to weight (F / G) was significantly lower than that of the control group (P = 0.05) at 21 days of age compared with that of the control group, and compared with the control group, the average daily gain (ADG) was significantly higher than that of the control group (P < 0.01). At 42 days of age, the tibia length and calcium content of groups 1 and 2 were significantly increased, and the tibia ash content of group 1 and group 2 was significantly higher than that of control group and group 2 at 42 days of age. The activity of serum glutamic oxaloacetic transaminase (glutamic oxaloacetic transaminase) in group 1 and group 2 was significantly lower than that in control group (P 0.05), but the activity of serum GOT in group 1 was not significantly different from that in group 2 (P 0.05). The effects of calcium compound organic acid on serum parathyroid hormone (PTH), calcitonin (CTN) and calcium (Ca) in 21 and 42 day old broilers were studied. The contents of phosphorus and the activities of glutamate-alanine aminotransferase (GPTN) and alkaline phosphatase (AKP) were not significantly affected by the addition of compound calcium organic acid to the diet of 21 and 42 day-old broilers, the total antioxidant capacity of T-AOCX, T-SOD and glutathione superoxide (GSH) were not significantly affected. The activity of GSH-Px and the content of malondialdehyde (MDA) had no significant effect on the activity of GSH-Px. It can be seen that adding compound calcium organic acid to diet can improve the growth performance and promote tibia development of broilers, and the effect of adding 0.4% compound organic calcium into the diet is better.
【作者单位】：浙江大学动物科学学院农业部华东动物营养与饲料重点实验室;浙江省湖州市吴兴区畜牧兽医局;
【基金】：基金项目:东南沿海地区大学农业科技服务技术集成与示范(2013BAD20B02)
【分类号】：S831.5

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