摘要
试验旨在探讨日粮中添加枣粉对陕北白绒山羊屠宰性能和肉品质的影响。试验选取健康无病、6月龄左右的陕北白绒山羊30只,随机分为5组,每组3个重复,每个重复2只羊。各组日粮中分别添加0(对照组)、10%(Ⅰ组)、15%(Ⅱ组)、20%(Ⅲ组)、25%(Ⅳ组)的枣粉,等比例代替饲料中的玉米秸秆。试验期90 d。结果显示,Ⅲ组、Ⅳ组的白绒山羊宰前重和胴体重显著高于Ⅰ组和对照组(P<0.05);Ⅲ组的屠宰率显著高于其他4组(P<0.05);对照组的净肉率显著低于其他4组(P<0.05)。Ⅱ组、Ⅲ组、Ⅳ组羊肉的红度(a^(*)值)显著高于对照组(P<0.05);Ⅲ组、Ⅳ组羊肉的亮度(L^(*)值)显著低于对照组(P<0.05),黄度(b^(*)值)显著低于Ⅰ组和对照组(P<0.05)。Ⅲ组羊肉的系水力显著高于对照组(P<0.05),剪切力值显著低于对照组(P<0.05);Ⅲ组的熟肉率显著高于对照组和Ⅳ组(P<0.05)。Ⅲ组、Ⅳ组羊肉的肌纤维密度较大,显著高于对照组(P<0.05);Ⅲ组的肌纤维面积和肌纤维直径均显著低于对照组(P<0.05)。Ⅲ组羊肉的水分含量显著低于对照组(P<0.05),粗蛋白含量和粗脂肪含量均显著高于对照组(P<0.05);Ⅲ组、Ⅳ组的粗灰分含量较小,显著低于对照组(P<0.05)。研究表明,添加20%的枣粉量对提高陕北白绒山羊屠宰性能和改善肉品质的效果最优。
The experiment was conducted to investigate the effects of jujube powder on slaughter performance and meat quality of Northern Shaanxi white cashmere goats. Thirty healthy Northern Shaanxi white cashmere goats aged about six months without disease were randomly divided into five groups, with three replicates in each group and two goats in each replicate. The diets in each group were supplemented with 0(control group), 10%(group Ⅰ), 15%(group Ⅱ), 20%(group Ⅲ) and 25%(group Ⅳ) jujube powder, respectively, to replace the corn straw in the diet. The experiment lasted for 90 d.The results showed that the pre-slaughter weight and carcass weight of white cashmere goats in group Ⅲ and group Ⅳwere significantly higher than those in group Ⅰ and control group(P0.05). The slaughter rate of group Ⅲ was significantly higher than that of the other four groups(P0.05). The net meat percentage of control group was significantly lower than that of the other four groups(P0.05). The a^(*) value of mutton in group Ⅱ, group Ⅲ and group Ⅳ was significantly higher than that in control group(P0.05). The L^(*) value of mutton in group Ⅲ and group Ⅳ was significantly lower than that in control group(P0.05), and the b^(*) value was significantly lower than that in group Ⅰ and control group(P0.05). The systemic water pressure and shear force of mutton in group Ⅲ were significantly higher than those in control group(P0.05). The cooked meat percentage of group Ⅲ was significantly higher than that of control group and group Ⅳ(P0.05). The muscle fiber density of mutton in group Ⅲ and group Ⅳ was higher than that in control group(P0.05). The muscle fiber area and diameter of group Ⅲ were significantly lower than those of control group(P0.05). The moisture content of mutton in group Ⅲ was significantly lower than that in control group(P0.05), and the crude protein content and crude lipid content of mutton in group ⅲ were significantly higher than that in control group(P0.05). The crude ash content in group Ⅲ and group Ⅳ was lower than that in control group(P0.05). The study indicates that adding 20% jujube powder has the best effect on improving the slaughter performance and meat quality of Northern Shaanxi white cashmere goats.
作者
李娜娜
霍永智
刘柯柯
苗晓茸
曹凯鑫
冯娜
Li Na'na;Huo Yongzhi;Liu Keke;Miao Xiaorong;Cao Kaixin;Feng Na(Sheep Industry Development Center of Yulin City,Shaanxi Yulin 719000)
出处
《现代畜牧兽医》
2023年第5期32-37,共6页
Modern Journal of Animal Husbandry and Veterinary Medicine
基金
陕西省2015年重点研发计划项目(2015KTTSNY04-08)。
关键词
陕北白绒山羊
枣粉
屠宰性能
肉品质
Jujube powder
Northern Shaanxi white cashmere goat
Slaughter characteristics
Meat quality
