喹赛多对山羊生长性能及胴体品质的影响

60只3月龄左右杂交山羊,随机分为6组,空白对照组饲料不添加任何药物,药物对照组饲料添加50 mg/kg喹乙醇,4个试验组饲料中分别添加25、50、150和250 mg/kg喹赛多,试验期90 d.结果表明喹赛多25、50和150mg/kg能改善山羊平均日增重(ADG)4.4%、14.5%和7.2%,提高饲料转化率(FCR)5.9%、12.0%和7.4%.喹赛多250 mg/kg提高FCR 8.6%,但降低ADG 2.1%.喹赛多50 mg/kg组ADG和FCR均高于喹乙醇组.喹赛多50 mg/kg降低山羊腹泻频率39.0%,但随剂量增加,其抗腹泻作用下降.喹赛多25、50、150和250 mg/kg能提高山羊屠宰率2.5%、9.0%、5.0%和1.0%,增加眼肌面积4.8%、34.1%、16.1%和14.0%.喹赛多50 mg/kg组山羊净肉率提高14.0%,高于其他各组.喹赛多各剂量均能显著增高肌肉pH值,平均降低滴水损失值13.7%.可见,喹赛多适宜剂量,尤其50 mg/kg,有较好的促进山羊生长和改善胴体品质的作用.

Effects of cyadox on growth performance and carcass characteristics of goats

In order to investigate growth promotion of cyadox and its effects on carcass characteristics,60 three-month-old crossbred lambs were randomly allotted to six groups of ten lambs each which included one group(blank group)fed with the basal diet without any antimicrobial,one group supplemented with 50 mg/kg olaquindox and the other four groups supplemented with 25,50,150 and 250 mg/kg cyadox,respectively.The results showed that 25,50 and 150 mg/kg cyadox improved average daily gain(ADG)by 4.4%,14.5% and 7.2%,and gain/feed by 5.9%,12.0% and 7.3%,respectively,whereas 250 mg/kg cyadox reduced ADG by 2.1% during the whole experiment.ADG or gain/feed in goats fed diet with 50 mg/kg cyadox was greater than that of goats supplemented with the same dose of olaquindox.Compared with the blank group,cyadox at the dose of 50 mg/kg reduced diarrhea incidence by 39.0%,but as doses increased,diarrhea in the four doses(25,50,150 and 250 mg/kg)of cyadox improved dressing percentage by 2.5%,9.0%,5.0% and 1.0%,and enlarged the loin eye area by 4.8%,34.1%,16.1% and 18.1%,respectively.Lean percentage in goats fed 50 mg/kg cyadox was improved by 11.0%,greater than that of other groups.Cyadox increased mutton pH value,and reduced water loss in average by 13.7%.It is obvious that cyadox at a proper dose,50 mg/kg,not only promotes growth efficiently,but also improves carcass qualities significantly.