无精蛋鸭蛋制作咸蛋工艺研究     

孙静  皮劲松  潘爱銮  申杰  梁振华  吴艳  蒲跃进  张昊  杜金平 《湖北农业科学》2015,54(1):137-144

以无精蛋、鲜蛋为原料加工成咸鸭蛋,研究在15℃下不同盐浓度腌制液和不同腌制用水的最佳腌制天数,确定最佳盐浓度和腌制用水。结果表明,15%、17%和19%盐浓度生水腌制液腌制无精蛋均需25 d;21%和23%盐浓度生水腌制液腌制无精蛋需23 d;25%盐浓度生水腌制液腌制无精蛋仅需21 d,与相同浓度生水腌制液腌制鲜蛋的出缸时间相同,而25%盐浓度的凉开水和桶装水腌制液腌制鲜蛋则需23 d;说明生水腌制液腌制无精蛋和鲜蛋可以缩短腌制周期,且用无精蛋与鲜蛋制作的咸鸭蛋的特性相差不大,可以提高无精蛋的利用率。  相似文献   

泌阳县肉牛养殖常用饲料原料中微量元素及重金属含量分析          下载免费PDF全文

李静  王之保  李明  张成峰  孙秀玉  柏中林  许会芬 《中国牛业科学》2022,48(1):10-13

[目的]饲料原料中微量元素和重金属的含量对肉牛的生长发育及生态环境均有重要影响,通过对肉牛养殖中常用饲料原料中的微量元素及重金属含量进行分析,为肉牛养殖提供参考.[方法]研究对泌阳县境内24份肉牛养殖常用的饲料原料样品进行分析,采用硼氢化钾还原原子荧光光谱法测定了饲料原料中4种微量元素(铜、铁、锌、硒)及2种重金属(砷...  相似文献   

Change of plasma insulin-like growth factor-1 (IGF-1) concentration with early growth in Japanese beef cattle   总被引：1，自引：0，他引：1  

Yoshihito SUDA  Kentaro NAGAOKA  Kazuki NAKAGAWA  Takashi CHIBA  Fumihiro YUSA  Hisashi SHINOHARA  Akira NIHEI  Toshihiro YAMAGISHI 《Animal Science Journal》2003,74(3):205-210

The aim of the present study was to examine the change in plasma insulin‐like growth factor‐1 (IGF‐1) concentration with early growth, changes of bodyweight (BW) and relative dairy gain (RDG) in the pre‐ (PRW) and postweaning periods (POW) in Japanese beef cattle, and relationships with metabolites. A total of 33 calves, 22 Japanese black, 6 Japanese shorthorn and 5 of their crossbreed were studied. Insulin‐like growth factor‐1 and metabolite (glucose, triacylglycerol, nonesterified fatty acid) levels in the plasma, from jugular vein blood taken every month, were measured along with BW. Insulin‐like growth factor‐1 in POW increased dramatically with increase of BW (P < 0.05), and the correlation was positive at 0.52 (P < 0.01). Glucose levels correlated significantly with BW, RDG and IGF‐1 (P < 0.01). Metabolic required calorie correlated positively with IGF‐1 (P < 0.01). Also, correlations of BW in POW, with BW and RDG in PRW were positive (P < 0.01). Growth in PRW would be influenced by maternal effects, while active self‐secretion of IGF‐1 in POW might contribute to POW growth. These factors suggested that to increase growth in PRW, maintaining enough maternal effect and IGF‐1 level in POW, was important for establishing better growth after weaning.  相似文献   

草原红牛导入丹麦红牛血液试验效果(第二报)     

王振纲 《中国牛业科学》1991,(1)

为了提高草原红牛的生产性能,1985年开始在翁牛特旗海金山种牛场进行了草原红牛导入丹麦红牛血液试验。初步试验结果表明:丹红F_1毛色基本同草原红牛;尻部宽、长而平,原有斜尻缺点已明显得到改进;各阶段体重、体尺均有明显提高,尤以体躯的重量、宽度、高度和后躯的提高更为显著;适应性与草原红牛无差别;其产肉性能和产奶性能比草原红牛亦有明显提高。  相似文献   

反刍家畜饲用微生物添加剂的研究与应用   总被引：5，自引：0，他引：5  

蔡一鸣  廖梅  杨莉  罗险峰  李密 《畜牧与兽医》2002,34(1):5-7

选用贵州省畜牧兽医科学研究所分离鉴定和引购的无毒芽胞杆菌、酵母菌、乳酸菌、粪链球菌等多株益生菌 ,进行培养发酵、配方、生产工艺、主要技术指标等研究 ,研制成反刍家畜饲用微生物添加剂。用 0 2 %～ 0 4%的反刍家畜微生物添加剂对肉牛、山羊补饲精料进行 2 4h发酵处理后饲喂 ,饲养试验表明 ,试验组牛和羊比对照组可分别提高增重 1 4 5 %和 1 2 3 %。  相似文献   

Paternity tests in multisired beef herds by blood grouping   总被引：1，自引：0，他引：1  

A R Lehrer  M B Brown  H Schindler  Z Holzer  B Larsen 《Acta veterinaria Scandinavica》1977,18(4):433-441

The number of offspring sired by individual bulls in multisired beef herds was determined by blood grouping. Six series of tests, each having from 3 to 18 bulls as possible sires,, yielded from 35 to 114 dam-offspring pairs. The paternity was established for 45 to 90 % of the calves tested in each series. The rest were cases with either more than 1 bull not being excluded as the possible sire, or all bulls excluded from being the sire. The causes for the non-established paternities are discussed. Highly significant differences were found in the number of offspring sired by each bull. In each series, bulls ranking in the top third of the siring order sired 65–100 % of the calves with established paternities. Since a minority of the bulls sired the majority of the calf-crop, the generally recomended number of bulls for herds on the range can perhaps be reduced.  相似文献   

大额牛,云南瘤牛屠宰性能研究   总被引：4，自引：0，他引：4  

葛长荣  陈韬  袁希平 《中国牛业科学》1996,22(3):31-33

试验对小型大额平，云南瘤牛各4头公牛进行肉用性能研究，供试牛的平均年龄3．5±0．5岁。大额牛宰前活重149．0±19．0千克，胴体重78．18±8．82千克，净肉重59．28±7．92千克，屠宰率52．56±0．78％，净肉率39．76±0．24％，眼肌面积49．84±14．82厘米2；云南瘤牛宰前活重324．5±28．5千克，胴体重165．91±16．29千克，净肉重130．05±15．55千克，屠宰年51．08±1．53％，净肉率39．97±1．29％，眼队面积76．07±3．6厘米2。结果表明：两个品种在放牧条件下均具有较好的产肉性能和良好的肉质，是优良的地方牛种。  相似文献   

温岭高峰牛生产优质牛肉的潜力研究     

胡振尉  蒋永清  周卫东  叶宏伟 《中国牛业科学》1996,22(3):26-29

为充分利用地方牛种资源和饲草饲料资源，本试验对放牧饲养到1岁的温岭高峰牛，采用氨化稻草、啤酒糟加少量精料的低成本肥育方法，进行6个月的舍饲育肥，开发优质牛肉生产。经6头牛试验，18月龄头均活重达380±32．7千克，头均日增重0．84千克；抽样屠宰测定3头，胴体重233．1±5．70千克，屠宰率60．05±1．37％，净肉率51．16±1．99％．胴体产肉率85.18±1．77％，眼肌面积85.3±16．6平方厘米。优质切块肉比35.47±1．05％,9－11肋间肉样含氨基酸44．02％。肉质鲜嫩、多汁，经宾馆餐厨师评议，达到优质牛肉指标。  相似文献   

The effect of the pH of meat on the boiling test     

H. Korkeala  T. Alanko  O. Mtiki-Pettiys  O. Sorvettula 《Acta veterinaria Scandinavica》1988,29(1):15-22

The effect of the pH on the boiling test was studied in 68 beef and 108 pork muscles. The pH had a significant effect on the sensory scores obtained from the boiling test. The effect was particularly pronounced in the odour of meat. In beef the odour scores remain steady for samples with a pH value under about 6.2 and start to increase rapidly in higher pH values. In pork the increase in scores appears to be linear. The odour observed in high pH meat was described by the judges as abnormal and ammonialike. In the case of meat with a high pH, the results of the boiling test at meat inspection should be interpreted with extreme caution.  相似文献   

RADIOGRAPHIC CHANGES IN TESTES OF BULLS INFECTED WITH BESNOITIOSIS   总被引：1，自引：0，他引：1  

Uri  Bargai  VMD AB  DVSc  Theodor  Nobel  DVM†  Shmuel  Pearl  DVM† 《Veterinary radiology & ultrasound》1984,25(5):235-239

Ten beef bulls infected with Besnoitiosis were examined radiographically and pathologically. Eight of these were slaughtered soon after diagnosis; two were left for a six-month observation period. The radiographic findings were focal and branching-tree calcification of the testes. Histopathologic examination proved these calcifications to be necrotic sections of the seminiferous tubules. Radiography of the testes as a means of evaluating the fertility status of the infected bull is recommended.  相似文献