动物营养学报 >

2016 , Vol. 28 >Issue 4: 1233 - 1240

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.04.035

研究简报 Short Communications

磷酸脲添加量对羔羊生长性能、屠宰性能和肉品质的影响

  • 张帆 ,
  • 纪守坤 ,
  • 张乃锋 ,
  • 姜成钢 ,
  • 王黎文 ,
  • 丁健 ,
  • 司丙文 ,
  • 屠焰 ,
  • 刁其玉
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  • 1. 中国农业科学院饲料研究所, 农业部饲料生物技术重点实验室, 北京 100081;
    2. 农业部畜牧兽医总站, 北京 100026

收稿日期: 2015-11-16

  网络出版日期: 2016-04-11

基金资助

农产品质量安全专项资金(2014);牧区饲草饲料资源开发利用技术研究与示范(20120304202)

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Effects of Urea Phosphate Supplemental Level on Growth Performance, Slaughter Performance and Meat Quality of Lambs

  • ZHANG Fan ,
  • JI Shoukun ,
  • ZHANG Naifeng ,
  • JIANG Chenggang ,
  • WANG Liwen ,
  • DING Jian ,
  • SI Bingwen ,
  • TU Yan ,
  • DIAO Qiyu
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  • 1. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Station of Animal and Veterinary of the Ministry of Agriculture, Beijing 100026, China

Received date: 2015-11-16

  Online published: 2016-04-11

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摘要

本试验旨在研究磷酸脲添加量对羔羊生长性能、屠宰性能和肉品质的影响,并对磷酸脲在肉羊生产中的安全使用剂量进行评价。试验选用80只杜寒杂交F1代平均体重(25.86±1.06) kg的公羔羊,随机分为5组,每组8个重复,每个重复2只,在精粗比为1:1的饲粮中分别以0(对照)、0.5%、1%、2%、4%的磷酸脲替代部分豆粕类饲料。预试期为12 d,正试期为60 d。结果表明:1%组的羔羊在各时期平均日增重、宰前活重、胴体重、屠宰率均达到最高值;4%组的羔羊在各时期平均日增重、宰前活重、胴体重均极显著低于其他各组(P<0.01);与对照组相比,磷酸脲添加量对肉色红度值、pH、滴水损失无显著影响(P>0.05);2%组的黄度值显著高于其他各组(P<0.05);在剪切力方面,1%组(5.16 kg/cm2)显著高于0.5%组(4.47 kg/cm2)、4%组(3.69 kg/cm2)和对照组(4.21 kg/cm2)(P<0.05)。结果提示:磷酸脲可以作为氮磷添加剂用于肉羊饲粮中。羔羊饲粮中的磷酸脲添加量为1%时,羔羊达到最佳生长性能和屠宰性能;当磷酸脲替代比例达到4%时,极显著降低羔羊的平均日增重、胴体重,增加肌肉的亮度值;当磷酸脲替代比例为2%时,为有效安全水平,对羔羊生长性能、屠宰性能和肉品质除肌肉黄度值外无显著影响。因此,饲粮中磷酸脲适宜添加量为1%。

关键词： 磷酸脲; 羔羊; 平均日增重; 屠宰率; 肉品质

本文引用格式

张帆 , 纪守坤 , 张乃锋 , 姜成钢 , 王黎文 , 丁健 , 司丙文 , 屠焰 , 刁其玉 . 磷酸脲添加量对羔羊生长性能、屠宰性能和肉品质的影响[J]. 动物营养学报, 2016 , 28(4) : 1233 -1240 . DOI: 10.3969/j.issn.1006-267x.2016.04.035

Abstract

This experiment aimed to investigate the effects of urea phosphate supplemental level on growth performance, slaughter performance and meat quality of lambs, and to evaluate the safety dosage of urea phosphate used in lambs' diet. Eighty F1 Dorper×thin-tailed Han crossbred male lambs with an average body weight of(25.86±1.06) kg were used and randomly divided into 5 groups with 8 replicates per group and 2 lambs per replicate. Urea phosphate was added into each group to partly replace soybean meal and other ingredients of a basal diet, which had an equal proportion of forage and concentrate. Urea phosphate level in diets of each group was 0(control), 0.5%, 1%, 2% and 4%, respectively. The adaptation period was 12 d, and experimental period was 60 d. The results showed as follows:1% group had largest values of average daily gain(ADG) in each period, live weight before slaughter, carcass weight and slaughter rate; while ADG in each period, live weight before slaughter and carcass weight of 4% group were significantly lower than those of other groups(P<0.01); compared with control group, the supplementation of urea phosphate had little effects on the lamb meat redness, pH and drip loss(P>0.05), and 2% group had a highest value of yellowness occurred(P<0.05); in addition, share force of 1% group(5.16 kg/cm2) was significantly higher than that of 0.5% group(4.47 kg/cm2), 4% group(3.69 kg/cm2) and control group(4.21 kg/cm2)(P<0.05). In conclusion, urea phosphate can be used as an additive for nitrogen and phosphorus in diets for fattening lambs. Lambs supplemented with 1% urea phosphate have the best growth and slaughter performance. Supplementation of 4% urea phosphate significantly decreases ADG and carcass weight, but muscle redness and brightness are improved. It is safe to add 2% urea phosphate in lambs' diet with detrimental effects on growth, slaughter performance and meat quality, and it can significantly improve brightness value of muscle. Therefore, supplementation of 1% urea phosphate is beneficial for growth performance of fattening lambs to reach an optimal level.

Key words： urea phosphate; lamb; average daily gain; slaughter rate; meat quality

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