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2003年,湟中县引进皮特蒙牛细管冻精对青海黄牛进行改良,2004年产皮杂牛136头。据测定,杂种牛初生重平均为37.51kg,青海黄牛初生重为15.00kg,前者相对提高了150.07%;6月龄体重为133.82kg,比同龄青海黄牛提高148.27%;12月龄体重为262.27kg,比同龄青海黄牛提高185.70%。杂种牛表现出了较强的杂种优势,杂交效果显著。 相似文献
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为提高黄牛的生产性能,增加养殖效益,大通县从2001年引进并使用皮埃蒙特肉牛冻精对当地黄牛进行杂交改良。截止2002年10月冷配黄牛2926头,已产皮埃蒙特杂种牛2195头。结果显示皮埃蒙特杂交牛出生重29.47千克,比当地黄牛出生重22.42千克相对提高31.67%,6月龄、12月龄和18月龄体重分别为175.27千克、306.67千克和427.29千克,比当地黄牛相应月龄分别提高65.19%、84.22%和86.09%。因此,皮埃蒙特杂交牛的生产性能高于当地黄牛。 相似文献
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蓝白花肉牛杂交改良青海黄牛的效果 总被引：2，自引：0，他引：2
2002年互助县引进蓝白花牛细管冻精对青海黄牛进行改良,2003年产蓝杂牛133头。据测定,杂种牛初生重平均为37．51kg,青海黄牛初生重15．ookg,相对提高150．60％;6月龄体重为133．82kg,比同龄青海黄牛提高148．27％;12月龄体重为262．27kg,比同龄青海黄牛提高185．70％。杂种牛表现出了较强的杂种优势,杂交效果显著。 相似文献
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[目的]为了提高云南黄牛的生产性能,优选主要的杂交改良父本,开展云南黄牛杂交改良。[方法]用西门塔尔牛、短角牛、安格斯牛、海福特牛等分别与云南黄牛母本杂交,测定不同杂交组合后代初生、6月龄、12月龄、24月龄的体重体尺。[结果]云南黄牛经过杂交改良后,改良效果良好,杂交后代对云南高原的气候条件适应性良好。在农村饲养条件下,西×云杂一代牛初生重平均为24.57kg,6月龄体重平均为135.83kg,12月龄体重平均为196.21kg,24月龄体重平均为344.24kg,分别比本地黄牛提高74.13%,59.20%,56.53%和78.10%。短×云杂交一代牛初生重平均为22.28kg,6月龄体重平均为117.20kg,12月龄体重平均为193.56kg,24月龄体重平均为314.86kg,分别比本地黄牛提高57.90%,38.10%,54.21%和62.90%;安×云杂交一代牛犊牛初生重平均为21.21kg,6月龄体重平均为134.34kg,12月龄体重平均为196.18kg,24月龄体重平均为268.45kg,分别比本地黄牛提高50.32%,57.45%,56.51%和38.89%;海×云杂交一代牛初生重平均为22.78kg,6月龄体重平均为124.97kg,12月龄体重平均为190.52kg,24月龄体重平均为289.50kg,分别比本地黄牛提高61.45%,46.47%,51.99%和49.78%。[结论]西×云杂一代牛、短×云杂交一代牛、安×云杂交一代牛和海×云杂交一代牛生产性能显著提高,效益明显。 相似文献
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肉牛改良河西黄牛效果的调查 总被引：1，自引：1，他引：0
引进皮埃蒙特、德国黄牛、利本赞等肉牛品种改良本地西杂牛(西门塔尔牛与河西黄牛杂交后代)。测试结果,皮×西黄、德×西黄、利×西黄F代犊牛平均初生重分别为39.5、38.2和36.6kg,分别比本地西杂牛初生重27.8 kg提高 42.0%、37.4%和31.7%;6月龄的平均体重分别为 188、175和163 kg,分别比西杂牛6月龄体重127kg提高48.0%、37.8%和28.3%;12月龄的平均体重分别为271、257和246 kg,分别比西杂牛12月龄体重223 kg提高21.5%、15.2%和10.3%。经F检验,组间差异极显著(P<0.01)。 相似文献
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利用皮埃蒙特肉牛冻精对柴达木黄牛进行杂交改良。结果表明:皮杂F1牛平均初生重、6月龄体重、12月龄体重和不同生长发育阶段的体高、体斜长、胸围等指标分别比同龄本地黄牛高13.75 kg、58.90 kg、112.31 kg和14.42%~27.08%,差异均极显著(P<0.01),改良效果十分显著。 相似文献
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红安格斯牛和抗旱王牛是优良肉牛品种,本研究测定了这2种牛与重庆地区土种黄牛的杂种后代的生长发育性能。结果显示:初生至12月龄阶段,杂种牛在体高、体斜长、胸围、体重上的测定值均比黄牛的高(P0.01),红本、抗本杂一代犊牛初生重分别为32.41、34.59kg,比重庆本地黄牛16.82kg高92.68%、105.64%,6月龄体重分别比本地黄牛提高76.04%和87.52%,12月龄体重分别比本地黄牛提高67.70%和76.48%。结果表明杂种牛杂交优势明显。 相似文献
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中国西门塔尔牛杂交后代在高寒地区适应性观察 总被引：3，自引：0，他引：3
青海省互助县2006年引进中国西门塔尔牛细管冻精,利用人工授精技术进行杂交改良青海黄牛,2006～2008年改良青海黄牛2498头,其中受胎2020头,受胎率达到80.9%,繁活犊牛1898头,繁活率达到76%。据测定,西杂F1牛初生重、3月龄、6月龄、12月龄、18月龄体重分别为29.89kg、59.05kg、126.45kg、232.08kg、294.5kg,与同龄本地牛相比均有所提高,西杂F1牛表现出了较强的杂种优势,杂交效果显著。 相似文献
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安格斯肉牛杂交改良青海黄牛效果分析 总被引：1，自引：0，他引：1
青海省首次引进安格斯肉牛细管冻精,利用人工授精技术杂交改良青海黄牛,并对安本F1牛进行试验测定,结果表明：安本F1牛初生重平均为29.21kg,比本地黄牛初生重15.00kg相对提高了94.73%,安本F1牛3月龄、6月龄、12月龄、18月龄平均体重分别为73.63kg、112.78kg、195.85kg、268.50kg,比同龄本地牛分别提高了111.58%、109.23%、113.34%、156.45%,各阶段体尺指标比同龄本地牛相应提高。安本F1牛18月龄日增重为0.44kg,比本地黄牛日增重0.17kg,相对提高了158.8%。安本F1牛表现出了较强的杂种优势,杂交效果显著。 相似文献
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热应激对不同品种(系)青年肉牛生产性能、营养物质表观消化率及血液生化指标的影响 总被引：6，自引：0，他引：6
本试验旨在研究热应激对不同品种(系)青年肉牛生产性能、营养物质表观消化率及血液生化指标的影响,探究不同品种(系)肉牛的耐热性差异。选取体重[(185.89±14.02)kg]相近、健康的青年西杂牛(西门塔尔牛×宣汉黄牛)、地方黄牛(宣汉黄牛)和犏牛(娟姗牛×麦洼牦牛)各6头为研究对象,试验期间不同品种(系)的青年肉牛饲喂相同饲粮。试验时间为2015年4—9月,预试期7d,正试期180d。结果表明:1)试验牛舍5—8月温湿度指数(THI)高于72,属于热应激期,且显著高于4月(热应激发生前)和9月(热应激发生后)(P0.05);热应激环境导致各试验牛呼吸频率和直肠温度显著升高(P0.05)。试验期间犏牛呼吸频率和直肠温度显著高于西杂牛和地方黄牛(P0.05)。2)热应激期内西杂牛、地方黄牛和犏牛单位体重干物质采食量均有不同程度降低,以6月为最低,均较4月显著降低(P0.05),且降低幅度为犏牛西杂牛地方黄牛。西杂牛、地方黄牛和犏牛的平均日增重(ADG)均在6月最低,分别较4月降低了27.62%(P0.05)、10.81%(P0.05)和46.15%(P0.05);西杂牛的ADG在4—7月显著高于犏牛(P0.05)。西杂牛和犏牛的料重比(F/G)以6月为最高,分别较4月升高了63.01%(P0.05)和89.03%(P0.05);地方黄牛的F/G在9月最高,较4月升高了53.12%(P0.05)。3)热应激期内西杂牛、地方黄牛和犏牛的粗蛋白质(CP)表观消化率均有不同程度降低,且7月均较4月显著降低(P0.05);西杂牛7月的粗脂肪(EE)表观消化率较4月显著降低(P0.05),而热应激对地方黄牛和犏牛的EE表观消化率无显著影响(P0.05);热应激期内犏牛中性洗涤纤维(NDF)(6月)和酸性洗涤纤维(ADF)的表观消化率(5—8月)较热应激发生前显著降低(P0.05);热应激期内西杂牛和犏牛钙(Ca)(西杂牛:6—8月;犏牛:5—8月)和磷(P)的表观消化率(西杂牛:6—7月;犏牛:5—8月)较热应激发生前显著降低(P0.05)。试验期间,不同品种(系)牛的CP表观消化率无显著差异(P0.05),西杂牛和地方黄牛的EE表观消化率显著高于犏牛(P0.05),地方黄牛的ADF表观消化率显著高于西杂牛和犏牛(P0.05),西杂牛和地方黄牛的P表观消化率显著高于犏牛(P0.05)。此外,5—9月地方黄牛的Ca表观消化率显著高于犏牛(P0.05)。4)西杂牛、地方黄牛和犏牛血清中葡萄糖(GLU)浓度均以6月最低,较4月分别降低了16.82%(P0.05)、12.82%(P0.05)和15.90%(P0.05);热应激期间各试验牛血清中非酯化脂肪酸(NEFA)浓度均以7月最低,显著低于4月(P0.05);试验期间西杂牛和地方黄牛血清中尿素氮(UN)浓度随年龄的增大呈先升高后降低变化,而犏牛血清中UN浓度则持续升高;6—9月各试验牛血清肌酐(CRE)浓度均显著高于4、5月(P0.05),且7—9月犏牛血清CRE浓度显著高于地方黄牛(P0.05)。综上所述,热应激导致不同品种(系)青年肉牛生产性能降低、饲粮营养物质消化率降低,地方黄牛的耐热应激能力强于西杂牛和犏牛,犏牛对热应激最敏感。 相似文献
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The present study reports the phenotypic variation of body weight and body size, the genetic variation of D-loop of mtDNA and microsatellite DNA allele in Aceh cattle in Indonesia within the frame of the design of a conservation programme for this indigenous species. Aceh cattle differ from Bali, Madura, Java-Ongole and Pesisir cattle, but its ancestry relates it closest to Pesisir, thus adding more information to its entry from the Indian sub-continent. 相似文献
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S. Boonprong A. Choothesa C. Sribhen N. Parvizi C. Vajrabukka 《Livestock Science》2007,111(3):213-217
The relationship between the haemoglobin (Hb) type and reproduction and body weight was estimated in two different cattle breeds including 59 Thai indigenous and 51 Simmental × Brahman crossbred cows. Haemoglobin type was measured using cellulose acetate electrophoresis. Five haemoglobin types were present in indigenous cattle: HbAA (35.59%), HbAB (28.81%), HbAC (20.34%), HbBB (11.6%) and HbBC (3.39%). In the Simmental × Brahman crossbred cattle, three haemoglobin types, 50.98% HbAA, 45.10% HbAB and 3.92% HbBB, were present. The results revealed that Thai indigenous cows with HbAB type were heavier at birth, however, the best growth performance was recorded in HbAC animals. In contrast, calves carrying HbBB type were the lightest animals at birth and were the youngest group at first calving. This group of Thai indigenous cows was more than 4 months younger at first calving than the heifers with HbAA type. Simmental × Brahman crossbred cows with HbAA type were significantly (P < 0.05) heavier than the animals with HbAB type at birth as well as on days 200, 400 and 600 of age. Whereas, the animals with HbAB type gave birth to their first calf at a significantly (P < 0.05) younger age than those with HbAA type. 相似文献
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Martojo H 《Reproduction in domestic animals》2012,47(Z1):10-14
Livestock husbandry is essential for Indonesia. This study reviews cattle characteristics and husbandry methods in the country with special interest in describing the importance of indigenous breeds of cattle. As a conclusion, the Bali cattle ought to be considered the most suitable indigenous cattle breed for the low-input, high stress production system still practised by millions of families in Indonesia. 相似文献
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Boonprong S Sribhen C Choothesa A Parvizi N Vajrabukka C 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2007,54(2):62-65
Plasma biochemical profiles were studied in 112 mature (3 to 5-year-old) healthy cattle comprised of 61 Thai indigenous and 51 Simmental x Brahman crossbred male and cyclic female cattle at Nongkwang (Central Thailand) Livestock Research and Breeding Center, Thailand. Data were analysed for the effect of breed and sex. The results showed that the plasma glucose and gamma-glutamyl transferase (GGT) in the two breeds were significantly (P < 0.05) different. Furthermore, the urea, creatinine, albumin, total protein, aspartate amino transferase (AST), alanine amino transferase (ALT) and alkaline phosphatase (ALP) levels in Thai indigenous were significantly (P < 0.01) higher than in crossbred cattle. However, creatine kinase did not significantly differ in crossbred and indigenous animals. A sex difference was found in glucose level with male Thai indigenous having significantly higher levels (P < 0.05) than the other three groups. Plasma urea concentration in male crossbred cattle was lower than in the other groups (P < 0.05). Female crossbred cattle had significantly (P < 0.05) lower plasma creatinine levels than the other animals. Furthermore, levels of albumin in male and total protein in female crossbred were the lowest (P < 0.05) among the groups. The AST, ALT, ALP and GGT levels were significantly (P < 0.05) different between male and female. Female crossbred cattle had the lowest (P < 0.05) AST and GGT levels, whereas lowest (P < 0.05) ALT and ALP concentration was determined in male individuals of these breeds. 相似文献
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M.A. Khan 《Veterinary parasitology》1981,8(4):327-336
In two experiments, a pour-on application of phosmet at 25 mg kg?1 reduced the harassment of cattle by black flies for up to 5–6 weeks posttreatment. During this period, the treated groups either gained more weight or loss less weight than their controls. The untreated groups made compensatory gains when teh black fly activity decreased or ceased. No significant differences existed between the average daily gains of a treated group and its control either for the posttreatment-periods of 9 and 15 weeks or for the experimental periods of 15 and 20 weeks in the two experiments.Black fly toxemia was not seen in indigenous cattle or in naive steers brought into a black fly infested area 1–2 weeks before the onset of black fly activity. 相似文献
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A survey to demonstrate the presence or absence in Malawi of Vibriosis, Brucellosis, Trichomoniasis and Rift Valley Fever was carried out during 1974-1976. 4,876 serum samples were collected from Zebu cattle from 231 dip tanks throughout the country and 145 serum samples were taken from exotic cattle at 14 estates. Sheath washings were collected from 295 bulls representing indigenous Zebus and 54 bulls representing exotic cattle from all parts of Malawi. 245 vaginal mucus samples were taken from exotic breeds and 106 from Malawi Zebus. Vibriosis was found in 34 indigenous bulls and in 6 exotic bulls, 11,5 pct. and 11.1 pct. respectively. 33 vaginal mucus samples from exotic cattle of 13.4 of the samples examined were positive, corresponding to 53.8 pct. of the herds examined. From Malawi Zebus 16 vaginal samples or 15.1 pct. of the samples examined were positive. 5 of the Malawi Zebus tested for Brucellosis using S.A.T. contained a minimum of 100 IU/ml. 相似文献