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2008年6月和2009年7月从法国古尔蒙育种公司两次引入朗德鹅A、B、C三个品系种蛋,对其繁殖性能进行首次测定,结果显示,三品系中,受精率最低的A品系仅为38.05%,B、C两品系分别为60.56%和66.83%,基本接近报道资料的65%;受精蛋孵化率A品系为75.82%,B品系为82.58%,C品系为76.47%。出壳重占蛋重之比,三品系不论公母鹅都在66.08%～66.49%之间。0～4周龄成活率最低是A品系母鹅96.23%,其他为97.56%～99.48%。5～8周龄及9～30周龄成活率均在98%以上。上述资料,为朗德鹅的纯繁选育及杂交制种,提供了极为重要的科学依据。 相似文献
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为研究不同苎麻与精料配合比饲粮对朗德鹅生长性能和肠道黏膜形态结构发育的影响,选取体重接近的7日龄健康朗德鹅200羽,分3阶段进行饲养试验,每阶段设5个处理,每处理5个重复,每重复8只鹅。试验A组为全精料饲喂的对照组,试验B~E组在试鹅2~4周龄和5~7周龄饲粮中分别按1∶1、1∶2、1∶3和1∶4比例进行苎麻与精料配比,试鹅8~10周龄各组均只饲喂精料补饲肥育。结果表明:1试鹅2~4周龄和5~7周龄平均日增重和料重比均以对照A组最优,且显著优于试验B~E组(P0.05),而试验B~E组试鹅2~4周龄和5~7周龄平均日增重随着苎麻添加量的增加而逐渐降低,料重比则随着苎麻添加量的增加而逐渐升高;补饲精料后,试验B~E组8~10周龄试鹅的平均日增重显著高于对照A组(P0.05),而F/G则明显低于对照A组(P0.05),且试验C、D和E组试鹅10周龄末重与对照A组无显著差异(P0.05)。27周龄末试鹅的肠道总重量对照A组显著高于试验B组(P0.05),但与C、D和E组差异不显著(P0.05);回肠、空肠和十二指肠绒毛高度随苎麻添加量的增加而增加,同时回肠、空肠隐窝深度随苎麻添加量的增加而减小。因此,以生长性能和肠道形态结构发育为评价指标,肉鹅2~4周龄和5~7周龄2个阶段饲粮中饲用苎麻的添加比例控制在50%以内较为适宜。 相似文献
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采用全程饲喂配合料饲养肉仔鹅,观察合浦鹅和朗德鹅的产肉性能.10周龄朗德鹅和合浦鹅的体重分别达到5436克和5180克,耗料增重比分别为2.90和2.96.朗德鹅前期生长速度显著快于后期,也显著快于合浦鹅,合浦鹅后期生长速度快于前期.10周龄朗德鹅的胸肌率、胸部肌肉重、皮脂率和肌胃重比合浦鹅分别高35.91%、41.46%、17.01%和37.34%(P＜0.01).合浦鹅的脚重极显著高于朗德鹅,合浦鹅的死亡率显著高于朗德鹅.合浦鹅胸部产肉率、生活力和脂肪贮积能力远远低于朗德鹅,有待于今后在品种选育上进一步提高. 相似文献
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白羽朗德鹅与扬州鹅杂交后代体重、体尺和屠宰性能的研究 总被引：1，自引：0，他引：1
为探索白羽朗德鹅与扬州鹅杂交效果,本试验以白羽朗德鹅为父本,扬州鹅为母本进行杂交,测定其杂交后代10周龄体重、体尺和屠宰性能,并分析杂交鹅体重、体尺与屠宰性状之间的相关性。结果显示:杂交鹅平均体重可达3 554.48 g,公鹅均重达3 708.33 g,母鹅均重达3 400.62 g,体重、半净膛重、全净膛重三个指标公鹅显著高于母鹅(P0.05),腹脂重母鹅显著高于公鹅(P0.05);体重与体尺及屠宰性能之间呈显著(P0.05)或极显著(P0.01)正相关,体尺与屠宰性能也存在一定程度的相关性。试验结果表明白羽朗德鹅与扬州鹅杂交后代生长速度和屠宰性能良好。 相似文献
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《中国家禽》2016,(19)
试验选用道州灰鹅(公)×朗德鹅(母)杂交F_1代39只和朗德鹅39只,分别对0~12周龄的鹅进行称重,利用Logistic曲线方程对杂交F_1代鹅和朗德鹅各周龄体重变化进行拟合,并对0~12周龄两种鹅的平均料肉比进行分析。结果:①杂交F_1代鹅和朗德鹅0~6周龄出现体重增长高峰,7~12周龄相对稳定;杂交F_1代鹅和朗德鹅之间除初生重和2~4周龄体重存在显著差异(P0.05)外,其余各周龄差异不显著;杂交F_1代鹅和朗德鹅Logistic生长曲线模型的拟合度均高达0.998以上,杂交F_1代鹅生长拐点在6.5周龄,朗德鹅生长拐点在6.1周龄;杂交F_1代鹅第5周龄和朗德鹅第4周龄的体重与第12周龄体重的相关系数分别为0.419、0.438(P0.01),回归方程分别为y=0.747x+3439.8和y=1.079x+3277.2;②料肉比分析得出,饲养杂交F_1代鹅比朗德鹅节省3.3%精料和4.2%青料。试验表明,杂交F_1代和朗德鹅生长较快,其生长发育规律均符合Logistic曲线模型,两种鹅生长发育、料肉比之间存在一定差异。 相似文献
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孟昭宁 《河南畜牧兽医(综合版)》2006,27(10):19-21
朗德鹅(Landaise)又称大雁鹅、雁鹅。原产于法国西部的朗德地区,是著名的肥肝专用鹅。朗德鹅是以食草为主的水禽,属节粮型家禽,可以利用稻麦茬地、草滩、草坡以及田间路旁、房前屋后疏林隙地、湖滩河边及零星草地放牧鹅群。1朗德鹅的主要特点个体大,生长速度快,头部肉瘤不明显或没有,喙尖而利,颈上部有咽袋,颈粗短,颈羽稍卷曲。成年公鹅7～8kg,母鹅6～7kg,大的可超过10kg。肉用仔鹅经填肥后,8周龄体重约4.5kg。繁殖期为每年10月份至次年4月份,公母比1∶3。产蛋量少而蛋大,年产蛋35～40枚左右,平均蛋重180～200g。就巢性较弱,受精率为60%～6… 相似文献
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《当代畜牧》2007,(12)
选择114只30日龄左右的山羊羔羊,分为A、B、C3组,试验A、B组分别在30和60日龄断奶,然后喂给羊专用优质代乳料和优质饲草。对照C组90日龄断奶,同时补优质饲草料。结果表明,在120日龄时,A组30～120日龄平均日增重、120日龄平均体重分别为163.56±12.09g、20.96±2.25kg;B组30～120日平均日增重、120日龄平均体重分别为172.44±16.57g、21.83±2.41kg;C组30～120日平均日增重、120日龄平均体重分别为138.11±19.42g、18.65±2.79kg。A、B两组30～120日平均日增重、120日龄平均体重均显著高于C组(P<0.01)。 相似文献
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The National Research Council (NRC) recently published a method for calculating expected body weight (BW) in growing horses. The objective of this study was to compare foal BW data obtained from commercial Thoroughbred (TB) farms with BW estimates obtained using the 2007 NRC equation. A total of 9,589 observations on 885 growing TB horses were obtained. Data were sorted by age, and a subset was used for statistical analysis. Comparisons between actual BW and 2007 NRC-predicted BW at each month (0–18 months of age) were made using paired t-tests. The 2007 NRC closely predicted BW of growing TB horses at birth and between 6 and 9 months of age (within 3 kg). However, the equation underestimated BW between 1 and 5 months of age (by as much as 10 kg) and overestimated BW between 10 and 13 months of age (by as much as 9 kg). The 2007 NRC also underestimated BW by as much as 9 kg between 15 and 16 months of age. In the current study, the 2007 NRC equation did not precisely predict BW of horses at all ages. The 2007 NRC equation predicts that daily gain will decrease over time, whereas foals in the current study had an increase in daily gain between 12 and 14 months of age. Foals in the current study were raised in pasture-based management systems in which variations in forage availability and quality could have resulted in fluctuations in growth rate. 相似文献
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本试验旨在研究饲粮中添加丁酸梭菌和枯草芽孢杆菌对1~70日龄扬州鹅生长性能、消化酶活性、抗氧化功能和肠道形态的影响。选择1日龄健康、体重相近的扬州鹅公鹅288只,随机分为4组,每组6个重复,每个重复12只鹅。A组(对照组)饲喂基础饲粮,B组在基础饲粮中添加250 mg/kg丁酸梭菌(有效活菌数为3.0×10^6 CFU/g),C组在基础饲粮中添加250 mg/kg枯草芽孢杆菌(有效活菌数为2.0×10^7 CFU/g),D组在基础饲粮中添加250 mg/kg丁酸梭菌+250 mg/kg枯草芽孢杆菌。试验期10周。结果表明:1)B、C和D组总增重显著高于对照组(P<0.05),C、D组总采食量显著高于对照组(P<0.05)。2)B、C和D组空肠脂肪酶活性显著高于对照组(P<0.05)。3)C、D组血清和回肠总抗氧化能力显著高于对照组(P<0.05)。D组空肠谷胱甘肽含量显著高于对照组(P<0.05),C、D组空肠总超氧化物歧化酶活性显著高于对照组(P<0.05)。D组回肠谷胱甘肽过氧化物酶活性显著高于对照组(P<0.05)。4)C组空肠绒毛高度/隐窝深度(V/C)显著高于对照组(P<0.05)。B、C和D组回肠绒毛高度显著高于对照组(P<0.05),C、D组回肠V/C显著高于对照组(P<0.05)。由此可见,饲粮中添加丁酸梭菌和枯草芽孢杆菌及二者混合制剂可提高肉鹅总增重、空肠脂肪酶活性及抗氧化功能,添加枯草芽孢杆菌可更好地改善肠道形态。 相似文献
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本试验旨在研究饲粮能量蛋白质水平与赖氨酸水平对5 ～10周龄扬州鹅体重和屠宰性能的影响.试验采用3×4二因子试验设计,3个能量蛋白质水平,分别为10.83 MJ/kg+15％(低)、11.29 MJ/kg +16％(中)、11.75 MJ/kg+17％(高),其蛋能比均约为14g/MJ;4个赖氨酸水平,分别为0.65％、0.80％、0.95％和1.10％.首先配制低、中、高能量蛋白质水平的3种基础饲粮,通过在3种基础饲粮基础上添加不同水平的赖氨酸,得到12种试验饲粮.选取384只体重相近的5周龄扬州鹅公鹅,随机分为12组(每组4个重复,每个重复8只),分别饲喂不同的试验饲粮,持续至10周龄末.结果表明:1)饲粮能量蛋白质水平对扬州鹅6、8、10周龄的体重无显著影响(P＞0.05);饲粮赖氨酸水平显著(P＜0.05)或极显著(P＜0.01)影响扬州鹅6、8、10周龄的体重,表现为0.65％赖氨酸组6、8周龄的体重显著(P＜0.05)或极显著(P＜0.01)高于0.80％和1.10％赖氨酸组,10周龄的体重显著高于1.10％赖氨酸组(P＜0.05);饲粮能量蛋白质水平与赖氨酸水平对扬州鹅6周龄的体重有显著的交互作用(P＜0.05),对8、10周龄的体重无显著的交互作用(P＞0.05).2)饲粮能量蛋白质水平显著影响扬州鹅的腹脂率(P＜0.05),表现为低能量蛋白质组显著(P＜0.05)或极显著(P＜0.01)低于中、高能量蛋白质组,但对屠宰率、半净膛率、全净膛率、胸肌率和腿肌率无显著影响(P＞0.05);饲粮赖氨酸水平对扬州鹅的各项屠宰性能指标均无显著影响(P＞0.05);饲粮能量蛋白质水平与赖氨酸水平对扬州鹅的各项屠宰性能指标均无显著的交互作用(P＞0.05).结果提示,饲粮较低的能量蛋白质水平与赖氨酸水平即可满足5 ～10周龄扬州鹅获得最佳体重和屠宰性能的需要,本试验认为5 ～10周龄扬州鹅获得最佳体重和屠宰性能时能量、蛋白质和赖氨酸水平分别为10.83 MJ/kg、15％和0.65％. 相似文献
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为研究贵州香猪生长的蛋白质需要,选择60～75日龄贵州香猪34头（公母各半）,采用扣除蛋白等消化能（DEpf）饲粮设计和比较屠宰试验,测定贵州香猪生长的蛋白质沉积规律。研究显示,贵州香猪每千克增重的体蛋白沉积量7～16b、16—25k两个体重阶段相近,平均为172．17g,DCP用于体蛋白沉积的效率为73．93％;每千克增重的赖氨酸沉积量,两个体重阶段及不同DCP与D—lys梯度日粮基本一致,平均为12．03g,摄入D—lys扣除增重相应的维持赖氨酸消耗后剩余的几乎全部用于体蛋白沉积,沉积率平均为98．74％。结果表明,每千克增重生长的DCP需要量为247．38—0．95BW（g）、D—lys需要量为13．11—0．072BW（g）。 相似文献
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We evaluated the daily intake in donkeys during maintenance, late pregnancy, and early lactation. The growth curves of the foals in the first eight weeks of life and the milk production in lactating jennies were also investigated. Donkeys were separated into two groups: seven pregnant jennies (group 1: pregnant/lactating) and seven nonpregnant, nonlactating jennies (group 2). The groups were fed two different diets each. The feeding period for group 1 covered eight weeks before parturition and eight weeks postpartum. Group 2 was managed during the same time period (16 weeks). Diet 1 consisted of ad libitum hay, which was fed to group 1 during late pregnancy and to group 2 from weeks 1–8. Diet 2 consisted of the same ad libitum hay supplemented with 2 kg/head/day of concentrate, which was fed to group 1 during lactation and to group 2 from weeks 9–16. The daily dry matter intake (diet 1) was 2.56 kg/100 kg of body weight (BW) for nonpregnant jennies and 31% lower in the pregnant donkeys. In the lactating jennies, the total dry matter intake was similar to the nonpregnant group fed diet 2. The nonpregnant jennies lost 1.9% of their initial BW when fed diet 1, whereas they gained 8.4% of their initial BW when fed with diet 2. A weight loss was also found in the lactating donkeys. The foals more than doubled in their birth weight within two months. 相似文献
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Net mineral requirements for growth of Saanen goat kids in early life are similar among genders 
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下载免费PDF全文 A. N. Mendonça C. J. Härter S. F. Souza D. Oliveira O. Boaventura Neto B. Biagioli K. T. Resende I. A. M. A. Teixeira 《Journal of animal physiology and animal nutrition》2017,101(1):113-120
The current mineral requirements for growing goat kids are based on sheep and cattle studies without differentiating between the stages of development or gender. The aims of this study were to determine the net requirements for growth of Ca, P, Mg, Na and K of Saanen goat kids during the initial stages of growth and to analyse the effect of gender on the net requirements for growth of these macrominerals. Eighteen female, 19 intact male and 10 castrated male Saanen goat kids were studied. The kids were selected applying a completely randomized design and slaughtered when their body weight (BW) reached approximately 5, 10 and 15 kg to determine the mineral requirements for growth at these stages. The net mineral requirements for growth were similar among genders. The goat kids had slightly increased net requirements of Ca, P and Mg for growth with increasing BW from 5 to 15 kg. The net requirements for growth of Ca, P, Mg, Na and K ranged from 9.61 to 9.67 g/kg of BW gain, 7.14 to 7.56 g/kg of BW gain, 0.34 to 0.37 g/kg of BW gain, 1.26 to 1.13 g/kg of BW gain, 1.88 to 1.82 g/kg of BW gain as the animals grew from 5 to 15 kg respectively. In conclusion, when formulating diets for Saanen goat kids in early growth stage mineral levels do not need to adjusted based on gender. 相似文献
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Bell KM Rutherfurd SM Morton RH 《Journal of animal physiology and animal nutrition》2012,96(2):182-190
Growth rate is an important factor in neonatal survival. The aim of this study was to determine growth rates in hand-reared cheetah cubs in South Africa fed a prescribed energy intake, calculated for growth in the domestic cat. Growth was then compared with previously published data from hand-reared cubs in North America and the relationship between growth and energy intake explored. Daily body weight (BW) gain, feed and energy intake data was collected from 18 hand-reared cheetah cubs up to 120 days of age. The average pre-weaning growth rate was 32 g/day, which is lower than reported in mother-reared cubs and hand-reared cubs in North American facilities. However, post-weaning growth increased to an average of 55 g/day. Growth was approximately linear prior to weaning, but over the entire age range it exhibited a sigmoidal shape with an asymptotic plateau averaging 57 kg. Energy intake associated with pre-weaning growth was 481 kJ ME/kg BW(0.75). Regression analysis described the relationship between metabolic BW, metabolisable energy (ME) intake, and hence daily weight gain. This relationship may be useful in predicting energy intake required to achieve growth rates in hand-reared cheetah cubs similar to those observed for their mother-reared counterparts. 相似文献
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The present study was designed to analyse the factors influencing fatty liver weight.Taking the overfeeding results in 2014 and the local temperature together,effects of gender,temperature and body weight on fatty liver weight were studied and the results would provide reference information for improving fatty liver production and breeding work.Totally 415 geese at 10 weeks old were overfed for 28 days.Body weight before and after overfeeding,fatty liver weights,abdominal adipose weights were measured.Blood samples of geese were collected for DNA extraction to determine the gender.The results showed that body weight before and after overfeeding and gain weight during overfeeding period were all associated with liver weight extremely significantly and the correlation coefficient were 0.40,0.62 and 0.46,respectively (P < 0.01).The body weight after overfeeding showed extremely significant effect on fatty liver weight (P < 0.01).Gender showed no significant effect on liver weight when the body weight were similar between female and male geese (P > 0.05).Effect of temperature on liver weight was extremely significant (P < 0.01).Overfeeding work should be conducted between 13.6 to 25.2 ℃ and the optimal temperature was 20.3 ℃.Higher temperature would result in reduction of fatty liver weight.In summary,temperature was a fundamental guarantee for fatty liver production and body weight was an indirect selecting index when cultivate a breed specific for fatty liver.Further,gender showed no significant effects on fatty liver weight. 相似文献
20.
新太湖鹅与隆昌鹅、太湖鹅生长发育规律研究 总被引：7，自引：1，他引：6
选用隆昌鹅、太湖鹅和新太湖鹅 (隆昌鹅作父本 ,太湖鹅作母本所培育的后代 )各 60只 ,在粗放条件下饲养到 70日龄 ,测定了 3种鹅各周龄的体重及 2 ,4,6 ,8,10周龄的体尺 ,并用Richards生长曲线方程拟合了鹅的生长规律。结果证明 :太湖鹅前期生长早于隆昌鹅和新太湖鹅 ,在 4周龄左右为生长高峰 ,而隆昌鹅和新太湖鹅生长高峰周龄分别在 6周与 7周。新太湖鹅生长速度已基本接近隆昌鹅。 3种鹅随周龄增加 ,各周龄体重与 10周龄体重相关性增强。初生重与前期的生长相关性较强 ,与 10周龄体重相关系数较低。Richards生长曲线方程能很好地拟合鹅的生长发育规律 ,拟合精度 (R2 )均大于 0 9988。 6周龄是新太湖鹅骨骼、胸宽、胸深生长发育的旺盛期 ;在 6周龄前 ,太湖鹅体尺测定指标大于隆昌鹅与新太湖鹅 ,6周龄后则相反。 相似文献