通脉颗粒药渣对杜寒杂交母羊屠宰性能、器官指数及瘤胃发酵参数的影响

Effects of Tongmai Granule Residue on Slaughter Performance,Organ Index and Rumen Fermentation Parameters of Doper × Short-tail Han Ewes

【目的】研究日粮添加通脉颗粒药渣(Tongmai granule residues, TGR)对羊屠宰性能、器官指数、复胃发育及瘤胃发酵参数的影响。【方法】选取1岁左右、平均体重为(29.64±1.80) kg的健康杜寒杂交母羊15只,随机分为3组,每组5个重复,分别为对照组(不含TGR)、10%TGR组和15%TGR组。参照NY/T816-2004配制基础日粮,精粗质量比均为6∶4,饲养至第76天屠宰。【结果】(1)日粮添加15%TGR眼肌面积显著降低(P<0.05),但对宰前活重、胴体重、屠宰率均无显著影响(P>0.05)。(2)日粮添加15%TGR肾脏指数显著高于对照组(P<0.05),但其他器官指数差异均不显著(P>0.05)。(3)各组瘤胃、网胃、瓣胃、皱胃的绝对重量及其与宰前活重的相对重量差异不显著(P>0.05),15%TGR组瘤胃重与复胃重之比显著升高(P<0.05),皱胃重与复胃重比例显著下降(P<0.05)。(4)日粮添加15%TGR瘤胃pH和氨态氮质量浓度较对照组和10%TGR组显著升高(P<0.05),乙酸、丙酸、丁酸和TVFA浓度较对照组和10%TGR组显著降低(P<0.05)。【结论】在本试验条件下,杜寒杂交母羊日粮中TGR添加水平为10%时,饲喂效果较好。

[Purpose] To investigate the effects of the Tongmai granule residues(TGR) on slaughter performance, organ indexes, development of complex stomachs and rumen fermentation parameters in sheep.[Method]Fifteen healthy Doper × Short-tail Han ewes with an average body weight of(29.64 ± 1.80) kg were randomly divided into 3 groups with 5 ewes in each group. They were control group(without TGR), 10% TGR group and 15% TGR group. The basic diet was prepared according to NY/T 816 -2004. The ratio of concentrate to roughage was 6∶4, and it was slaughtered until the 76 th day.[Result](1) The eye muscle area decreased significantly with dietary supplementation of 15% TGR(P<0.05), but there was no significant difference in pre-slaughter live weight, carcass weight and slaughter rate(P>0.05).(2) The kidney index in the 15% TGR group was significantly higher than those in the control group(P<0.05), but there was no significant difference in other organ indexes between the groups(P>0.05).(3) There was no significant difference in the absolute weight of rumen, reticulum, omasum, abomasum, and their relative weights to pre-slaughter live weight in all groups(P>0.05). The ratio of rumen weight to compound stomach was significantly increased(P<0.05), and the ratio of abomasum weight to compound stomach was significantly decreased with dietary supplementation of 15% TGR(P<0.05).(4) The pH value and NH3-N concentration in rumen of the 15% TGR group were significantly higher than those in the control group and10% TGR group(P<0.05). But the concentrations of acetic acid, propionic acid, butyric acid and total volatile fatty acid in the rumen of the 15% TGR group were significantly lower than those in control group and 10% TGR group(P<0.05).[Conclusion]It is concluded that 10% TGR in the diet is the appropriate level of supplementation for Doper × Short-tail Han ewes.