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1.
本试验旨在研究妊娠后期饲粮代谢能水平对绒山羊母羊增重、血浆生殖激素浓度、初乳产量、初乳乳成分及羔羊初乳期生长的影响。选用18只体重(39.75±2.86)kg、年龄3~4岁,处于妊娠91 d的内蒙古白绒山羊,随机分为3组,每组6只。根据NRC制订基础饲粮,各组饲粮代谢能分别为7.70(基础饲粮的70%)、11.00(基础饲粮,对照组)、14.30 MJ/kg(基础饲粮的130%)。预试期为妊娠91~100 d,正试期为妊娠第110天至产后第5天。结果表明:1)14.30 M J/kg饲粮代谢能可显著提高妊娠后期血浆雌二醇(E2)浓度平均值、妊娠后期母羊体增重、产后第1~4天初乳乳蛋白含量及初乳期羔羊平均日增重(P0.05);母羊饲粮代谢能水平对母羊血浆孕酮(P4)及催乳素(PRL)浓度、初乳乳脂含量(产后第4天除外)、羔羊初生重影响不显著(P0.05)。2)7.70 MJ/kg饲粮代谢能可降低妊娠后期母羊血浆E2、P4及PRL浓度平均值,妊娠后期母羊体增重,羔羊初生重,初乳产量(产后第5天除外),初乳乳蛋白含量(产后第1、3天除外),初乳期羔羊平均日增重,但影响不显著(P0.05),显著降低初乳乳脂含量(产后第3天除外)(P0.05)。因此,饲粮代谢能为14.30 M J/kg更适合妊娠后期母羊,为应对饲草料不足可以以代谢能为7.70 MJ/kg的饲粮限饲。 相似文献
2.
本试验旨在探讨胍基乙酸(GAA)对舍饲滩羊生长性能、屠宰性能、脂肪沉积和肌肉营养成分的影响。试验选取平均体重为(20.32±0.55) kg的健康去势滩羊羔羊120只,按完全随机区组设计分为4组,每组6个重复,每个重复5只羔羊。对照组饲喂基础饲粮,试验组在基础饲粮中分别加入0.04%、0.08%和0.12%GAA。预试期7 d,正试期85 d。结果表明:与对照组相比,饲粮中添加0.08%和0.12%GAA显著提高平均日增重(P0.05),显著降低料重比(P0.05);饲粮中添加GAA对胴体重影响不显著(P 0.05),但添加0.08%和0.12%GAA显著提高屠宰率,添加0.08%GAA显著提高净肉率(P0.05);饲粮中添加0.08%和0.12%GAA显著降低尾脂/胴体重和胴体脂肪含量值(P0.05);饲粮中添加0.08%和0.12%GAA显著升高肌肉中糖原、肌内脂肪和蛋白质含量(P0.05)。综上所述,饲粮中添加0.08%GAA能够提高舍饲滩羊的生长性能和屠宰性能,可显著改善滩羊脂肪沉积和肌肉营养成分。 相似文献
3.
本试验旨在研究饲粮添加甜菜碱对巴马香猪繁殖性能、初乳成分及血浆代谢物和繁殖激素含量的影响。选取3~7胎次巴马香猪40头,随机分为2组,每组20头,单栏饲养。对照组饲喂基础饲粮,试验组在基础饲粮中添加3.5 kg/t甜菜碱盐酸盐。试验期为母猪配种后第3天至分娩后第21天。结果表明:与对照组相比,饲粮添加甜菜碱显著降低仔猪死亡率(P<0.05),增加断奶仔猪数(P=0.087);饲粮添加甜菜碱显著增加初乳中乳蛋白和尿素氮含量(P<0.05);饲粮添加甜菜碱显著降低妊娠第75天血浆总蛋白(TP)含量(P<0.05),显著降低妊娠第105天血浆TP含量和谷草转氨酶(AST)活性(P<0.05),显著增加妊娠第75天血浆碱性磷酸酶(ALP)活性以及产后第7天血浆AST和ALP活性(P<0.05),且妊娠第105天血浆ALP活性呈增加趋势(P=0.073);饲粮添加甜菜碱显著降低妊娠第45天血浆催乳素(PRL)、孕酮(PROG)、促卵泡素(FSH)和雌二醇(E2)含量以及妊娠第75天血浆PRL和PROG含量(P<0.05),且妊娠第75天血浆E2含量(P=0.061)和妊娠第105天血浆FSH含量(P=0.062)呈下降趋势。综上所述,饲粮添加甜菜碱可改善初乳成分和血浆代谢物含量,降低血浆繁殖激素含量,进而增加断奶仔猪数。 相似文献
4.
为研究N-氨甲酰谷氨酸（NCG）对滩羊母羊在非繁殖季节诱导同期发情效果的影响,试验采用随机区组设计,选择同期经产母羊200只,分为4个试验组,每组50只,分别在母羊空怀期和妊娠期饲喂不同梯度的NCG预混料至全混合日粮（TMR）。在滩羊非繁殖季节乏情期,对空怀母羊采用PRID＋PMSG＋LRH-A3+PG诱导发情处理|对其羔羊实行早期隔栏补饲及早期断奶,羔羊组补饲营养水平及饲养管理条件一致,测定其繁殖性能指标。结果表明：试验2组第1情期受胎率（第二同期处理）、产羔率、产双羔率、断奶重和断奶成活率分别比4组（CK）提高45.83%、20.45%、210.13%、11.00%和5.83%（P ＞ 0.05）,其妊娠早期胚胎死亡率、空怀天数和产羔间距分别比4组降低33.37%、3.54 %和1.34%（P ＞ 0.05）|试验1组第1情期受胎率（第一同期处理）、羔羊初生成活率和断奶成活率分别比4组提高43.58%、5.32%和7.90%（P ＞ 0.05）,妊娠早期胚胎死亡率比4组降低65.98%（P ＞ 0.05）|试验3组羔羊初生重比4组提高4.53%（P ＞ 0.05）,妊娠早期胚胎死亡率比4组降低11.11%（P ＞ 0.05）。结果提示,在滩羊非繁殖季节乏情期,母羊添加NCG 1.027 g/d DM（空怀期）和1.195 g/d DM（妊娠期）饲粮,能提高母羊的第1情期受胎率、产羔率、产双羔率、羔羊断奶重及断奶成活率,减少妊娠早期胚胎死亡率、羔羊断奶天数、母羊空怀天数和产羔间距等繁殖力指标,可作为滩羊实现“两年三产”高频繁殖目标的优选饲粮方案。
[关键词] N-氨甲酰谷氨酸|滩羊|诱导发情|繁殖性状|两年三产 相似文献
5.
《动物营养学报》2015,(9)
本试验旨在研究甜菜碱添加方式对初产母猪繁殖性能及血清生长激素(GH)、胰岛素样生长因子-Ⅰ(IGF-Ⅰ)含量的影响。选取120头体重接近的纯种初产母猪,随机分为3组,每组40头,每个重复1头。从妊娠第3天起至分娩后21d,对照组饲喂基础饲粮,甜菜碱Ⅰ组在基础饲粮中添加1 000mg/kg甜菜碱;甜菜碱Ⅱ组妊娠前109d饲喂基础饲粮,自妊娠第110天至分娩后21d,在基础饲粮中添加2 000mg/kg甜菜碱。结果表明,与对照组相比:1)饲粮添加1 000mg/kg的甜菜碱显著提高了21日龄断奶仔猪数1.73头(P0.05)和断奶窝重22.83%(P0.05),显著或极显著增加了分娩后10和21d血清中GH含量(P0.05或P0.01),极显著增加了妊娠第100天、分娩后10和21d血清中IGF-Ⅰ含量(P0.01)。2)饲粮添加2 000mg/kg的甜菜碱使母猪断奶后7d内断奶-发情间隔显著缩短了1.29d(P0.05),极显著增加了分娩后21d血清GH含量(P0.01)。由此可见,饲粮中添加1 000和2 000mg/kg的甜菜碱均能够提高初产母猪的繁殖性能,其中1 000mg/kg的甜菜碱对血清中GH和IGF-Ⅰ含量的影响更大。 相似文献
6.
饲粮中添加中链脂肪酸甘油三酯对母猪繁殖性能、血清生化指标及初乳成分的影响 总被引：1，自引：0，他引：1
本试验旨在研究母猪妊娠后期和泌乳期饲粮中添加中链脂肪酸甘油三酯(MCT)对母猪繁殖性能、血清生化指标及初乳成分的影响。试验选取120头纯种大白妊娠母猪(3~5胎),根据母猪预产期相近,胎次、体况、历史繁殖成绩均衡分布的原则分为3组,每组40个重复,每个重复1头母猪。对照组饲喂基础饲粮(含3.17%豆油),油剂组以0.6%纯油剂MCT替换基础饲粮中0.6%的豆油(含2.57%豆油),粉剂组在基础饲粮中添加0.5%微胶囊粉剂MCT。试验从母猪妊娠第85天开始至仔猪断奶结束。结果表明:1)与对照组相比,油剂组和粉剂组母猪产程分别提高了17.58%(P0.05)和9.21%(P0.05),母猪泌乳期平均日采食量分别提高了5.92%和10.07%(P0.05),母猪断奶后7日发情率分别提高了6.52%和4.25%(P0.05);饲粮中添加MCT对母猪其他繁殖性能指标无显著影响(P0.05)。2)饲粮中添加MCT对母猪血清生化指标均无显著影响(P0.05)。3)与对照组相比,油剂组和粉剂组母猪初乳乳脂含量分别提高了18.09%和19.09%(P0.05),饲粮中添加MCT对母猪初乳成分均无显著影响(P0.10)。由此可见,在母猪妊娠后期及泌乳期饲粮中添加MCT未能改善母猪的生产性能、血清生化指标及初乳成分,但添加油剂型MCT可显著缩短母猪产程。 相似文献
7.
《黑龙江畜牧兽医》2015,(23)
为了研究冷季补饲对阿勒泰妊娠母羊和羔羊生产性能的影响,2012年10月份—2013年8月份在阿勒泰市散德克库木种畜场选择年龄和胎次相同、体重接近的阿拉泰大尾母羊220只,随机分为对照组和试验组,试验组每只母羊每天补饲颗粒料600 g,对照组不补饲。试验羊分娩后测定母羊体重、羔羊初生重、初生体尺及每月体重、体尺指标。试验组母羊分娩的羔羊为试验组,断奶后补饲颗粒料;对照组母羊分娩的羔羊为对照组,不补饲颗粒饲料。结果表明:补饲颗粒料能显著增加母羊分娩体重,显著增加羔羊初生体高、体长和胸围(P0.05);羔羊断奶后补饲颗粒料可显著提高生产性能,120日龄时试验组羔羊体重极显著高于对照组羔羊(P0.01)。说明母羊和断奶羔羊补饲颗粒料可以提高羔羊体尺指标,促进前躯发育水平。 相似文献
8.
饲粮添加抗生素和植物精油对母猪生产性能、免疫功能和乳成分的影响 总被引：1，自引：0，他引：1
本文旨在考察妊娠后期母猪饲粮添加酒石酸泰万菌素(TT)与植物精油(PEO)对其生产性能、免疫功能和乳成分的影响。试验选用24头体重相近的3~4胎次"长×大"繁殖母猪,随机分为3组:1)对照组:基础饲粮;2)TT组:基础饲粮+100 mg/kg TT;3)PEO组:基础饲粮+200 mg/kg PEO。每组8个重复,每个重复1头猪。试验期为妊娠第96天至断奶。结果显示,饲粮添加TT和PEO可改善母猪生产性能;与对照组和TT组相比,PEO组死胎率分别降低了71.43%和53.33%(P0.05),断奶存活率分别提高了1.17%和1.60%(P0.05),木乃伊率较对照组降低了50.00%(P0.05);PEO组母猪分娩第1、14和21天、TT组母猪分娩第21天血清免疫球蛋白(Ig)A含量均显著高于对照组(P0.05);PEO组母猪分娩第14天乳清Ig G、Ig M含量也显著高于其他2组(P0.05),同时其分娩第21天乳清Ig G含量显著高于对照组(P0.05);PEO组母猪分娩第21天乳脂含量显著高于对照组(P0.05)。综上所述,饲粮添加TT和PEO均能在不同程度上改善母猪生产性能与免疫功能,但与TT相比,PEO效果更好,具有替代TT在妊娠母猪上应用的潜力。 相似文献
9.
试验旨在研究过瘤胃蛋氨酸对舍饲滩羊生产性能的影响。选择20只体重相近体况良好的3月龄滩羊羔羊。随机分为2组,每组滩羊10只(公羊5只,母羊5只)。试验组在饲喂基础饲粮的同时加4g/d过瘤胃蛋氨酸。结果表明,饲粮添加4g/d过瘤胃蛋氨酸可显著提高滩羊羔羊的体长增长幅度(P0.05),体高、胸围、管围增长幅度无显著差异(P0.05)。试验全期60d,饲粮添加过瘤胃蛋氨酸显著提高了滩羊羔羊的全期总增重,且平均日增重比对照组提高43.25%。说明,饲粮添加过瘤胃蛋氨酸对舍饲滩羊的生产性能具有促进作用。 相似文献
10.
《饲料研究》2019,(5)
试验旨在研究饲粮中添加不同水平扁杏皮对断奶羔羊生长性能和血清生化指标的影响。选择50日龄左右、体重相近、健康状况良好的小尾寒羊断奶母羔80只,随机分为4个处理组,每个处理组5个重复,每个重复4只羊。对照组饲喂不含扁杏皮的饲粮,试验组分别饲喂含3%、6%和9%扁杏皮的饲粮。试验期60 d。在试验开始和结束时测定断奶羔羊的生长性能,采集血液样品进行分析。结果表明:添加3%、6%扁杏皮组断奶羔羊的平均日增重显著高于对照组(P0.05),而饲料转化率显著低于对照组(P0.05)。各组之间羔羊血清的总蛋白、白蛋白和球蛋白含量没有显著性差异(P0.05),葡萄糖和甘油三酯含量也没有显著性差异(P0.05);各试验组断奶羔羊血清中尿素氮和胆固醇总量显著低于对照组(P0.05)。由此可知,饲粮中添加适量扁杏皮可以提高断奶羔羊的生长性能,改善部分血清指标。在生产实践中,断奶羔羊饲粮中扁杏皮最佳添加比例为6%。 相似文献
11.
试验采用放牧+补饲的方式,分别利用玉米秸秆和小麦秸秆全价颗粒饲料在冷季对妊娠后期甘肃高山细毛羊进行补饲,测定妊娠后期母羊体重、血清生化指标、瘤胃液发酵参数及羔羊初生重。试验选取体况相近且健康的妊娠后期母羊60只,随机分为3组,每组20只。试验组补饲营养量根据中国美利奴羊妊娠后期母羊的饲养标准确定（扣除放牧采食量）,试验组Ⅰ补饲小麦秸秆全价颗粒饲料（1.19 kg/（只·d））,试验组Ⅱ补饲玉米秸秆全价颗粒饲料（1.19 kg/（只·d））,对照组按牧民传统方式（玉米0.05 kg/（只·d）、燕麦草0.2 kg/（只·d））补饲,正试期60 d。结果表明,试验组妊娠母羊的平均日增重、羔羊初生重均显著高于对照组（P<0.05）,而两试验组间无显著差异（P>0.05）;试验组妊娠母羊血液总蛋白、白蛋白、葡萄糖、总胆固醇浓度及谷草转氨酶、谷丙转氨酶和乳酸脱氢酶活性均显著高于对照组（P<0.05）;试验组妊娠母羊瘤胃液中总氮、蛋白氮、挥发性脂肪酸浓度和丙酸摩尔比均显著高于对照组（P<0.05）,而乙酸摩尔比显著低于对照组（P<0.05）。综上所述,补饲小麦秸秆或玉米秸秆全价颗粒饲料均可改善妊娠后期甘肃高山细毛羊营养状况,促进羔羊的生长发育。 相似文献
12.
本试验旨在研究妊娠后期母羊饲粮精料比例对羔羊生长性能、消化性能和血清抗氧化指标的影响。试验选用66只妊娠90 d、平均体重为(44.45±2.20)kg的初产湖羊,按照体重相近原则随机分为3组,每组11个重复,每个重复2只。各组母羊妊娠期饲粮精料比例分别为50%、40%和30%,分娩后母羊饲喂相同的全混合日粮(TM R)。羔羊10日龄,每只母羊取1只羔羊断母乳,饲喂代乳粉;15日龄补饲开食料;20日龄补饲苜蓿干草,自由采食至60日龄。每10 d测定1次羔羊体重,51~60日龄进行羔羊消化代谢试验,20和60日龄采集羔羊血液测定血清抗氧化指标。结果表明:妊娠后期母羊饲粮精料比例对羔羊1、10、20、30、40、50、60日龄体重,20、60日龄体尺指标及营养物质表观消化率均无显著影响(P0.05)。随母羊饲粮精料比例降低,20日龄羔羊血清总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD)活性极显著升高(P0.01),60日龄50%组显著或极显著低于其他2组(P0.05或P0.01);30%组20和60日龄羔羊血清谷胱甘肽过氧化物酶(GSH-Px)活性极显著高于其他2组(P0.01);血清中MDA的含量在20日龄时随母羊饲粮精料比例的降低而极显著降低(P0.01),60日龄时50%组显著高于30%组(P0.05)。结果提示,妊娠后期母羊饲粮的精料比例对产后早期断奶羔羊的体重、体尺、营养物质表观消化率无显著影响,但随母羊饲粮精料比例的降低,羔羊血清的抗氧化能力提高。 相似文献
13.
The objective of the present experiment was to determine the effect of different types of N-carbamoylglutamate on growth performance,serum biochemical indexes and fat distribution of Tan sheep. Sixty male Tan lambs with average weight of (20.14±0.31)kg and similar age were randomly assigned three groups with five replications per group and 4 lambs per replication. The lambs in control group were fed basal diet, while lambs in test groups were fed diets containing 0.1% NCG and 0.1% RP-NCG,respectively. The results showed that:① Comparing with control group,the ADG was significantly improved (P<0.05) and F/G was significantly decreased (P<0.05) when 0.1% NCG or 0.1% RP-NCG were supplemented,while there was no significant difference between two experimental groups (P>0.05).② Dietary supplemented with 0.1% NCG or 0.1% RP-NCG significantly decreased the serum urea nitrogen (P<0.05),but there were no significant differences in serum total protein,creatinine content and creatine kinase activity (P>0.05).③ The ration of meat weight to carcass weight of two experimental groups was significantly improved (P<0.05).As 0.1% NCG or 0.1% RP-NCG were supplemented in the diets, the content of subcutaneous fat and GR value were significantly decreased (P<0.05),and the content of intramuscular fat (IMF) was significantly increased (P<0.05).In conclusion,dietary supplemented with 0.1% NCG or 0.1% RP-NCG could improve the growth performance and slaughter performance while there was no significant difference between NCG and RP-NCG. 相似文献
14.
Calcium (Ca) requirement increase rapidly by pregnant ewes at late gestation as a result of high fetal growth. Furthermore, Ca deficiency results in poor growth and bone development in growing newborn lambs. The aim of this study was to evaluate the effect of calcium supplementation (Calcium carbonate–CC) and vitamin AD3E injection (75,000 IU/shot) to pregnant Awassi ewes at late gestation (− 45 days prepartum) on their mineral levels and performance of their newborn lambs. Forty pregnant Awassi ewes at late gestation (65 ± 6.1 kg) were selected before parturition (− 45 days; using hormonal sponges for estrus synchronization) and randomly divided to 4 dietary treatments. The treatments were: group 1 Control (1.4% CC); group 2 (2.4% CC); group 3 (1.4% CC + 2 shots vitamin AD3E at − 45 and − 21 days prepartum); group 4 (2.4% CC + 2 shots vitamin AD3E at − 45 and − 21 days prepartum). Blood samples were collected from ewes (− 45, 0 days prepartum: 30 and 60 days postpartum) and lambs (0, 30 and 60 days old). Average milk yield and samples were collected. Body weights of lambs were taken at birth, 30 and 60 days old. Blood serum and milk samples were prepared and analyzed by AAS for Ca, Mg, Co, Mn and Cu concentrations.Calcium concentrations in bloods serum of ewes, 0 and 60 days postpartum, and lambs at weaning (60 days old) from group 4 were significantly (P < 0.05) higher compared to other groups. No significant effect (P > 0.05) of treatment on Co, Mg and Cu in blood serum of ewes and lambs except for Cu concentration in ewes. Moreover, a significant increase (P < 0.01) in milk inorganic% (30 and 60 days samples) in ewes from group 2 when compared with other groups. The average milk yield (AMY) of ewes from group 2 and 4 at late stage of lactation (45–60 days) were significantly higher (P < 0.05) compared to groups 1 and 3. In addition, Ca% in colostrums samples from ewes in groups 2 and 4 were significantly higher (P < 0.01). The average daily gain (ADG) and total body gain for lambs up to weaning (60 days old) were significantly higher (P < 0.05) in groups 1 and 2 compared with the other groups.In conclusion, increasing level of Ca intake in feed of Awassi ewes at late gestation, with or without vitamin AD3E injections, improve the calcium concentration in colostrums and blood serum of ewes and their lambs without negative effect in their health and performance. 相似文献
15.
本试验旨在研究饲粮中添加番茄红素对绵羊生长发育、屠宰性能和血清抗氧化指标的影响。选取体重为(22.0±0.5)kg的3月龄湖羊公羔30只,随机分为3组,每组10只,单栏饲养。对照组每天饲喂基础饲粮,试验组每天分别在基础饲粮中添加200和400 mg番茄红素。试验期共110 d,其中预试期10 d,正试期100 d。结果显示:与对照组相比,1)饲粮添加200和400mg/d番茄红素有提高绵羊平均日增重的趋势(0.05≤P0.10),并可显著降低料重比(P0.05);2)饲粮添加200和400 mg/d番茄红素可显著提高绵羊胸宽(P0.05),添加200 mg/d番茄红素有提高体长、体高和胸围的趋势(0.05≤P0.10);3)饲粮添加200和400 mg/d番茄红素有提高宰前活重、背肌重、肾脏重和GR值的趋势(0.05≤P0.10),添加400 mg/d番茄红素可显著提高皮重(P0.05),其他屠宰性能指标各组间无显著差异(P0.05);4)饲粮添加200和400 mg/d番茄红素有提高血清超氧化物歧化酶活性的趋势(0.05≤P0.10),添加200mg/d番茄红素可显著提高血清过氧化氢酶和谷胱甘肽过氧化物酶活性(P0.05)。结果表明,饲粮添加番茄红素对绵羊生长发育、屠宰性能和血清抗氧化能力有一定的提高作用,本试验条件下以200 mg/d添加量的效果较优。 相似文献
16.
试验旨在研究妊娠母羊饲粮添加叶酸对不同出生类型新生羔羊脐带血管生成相关基因表达的影响。选用体重相近、年龄一致的经产湖羊母羊120只,人工授精后随机分为3组,分别单栏饲喂补充0、16和32 mg/kg DM叶酸的全混合日粮。母羊分娩时,每组随机采集出生类型为双羔和三羔的胎盘与脐带样品各3个,共18个样品用于测定胎盘相关指标,胎儿脐带样品利用实时荧光定量PCR法检测血管生成相关基因——血管内皮生长因子A(VEGFA)、转换生长因子-β3(TGF-β3)、血管生成素-1(ANGPT-1)、血管内皮生长因子受体-1(FLT-1)和血管内皮生长因子受体-2(KDR)基因的相对表达水平。结果表明:妊娠母羊饲粮添加叶酸对胎盘重、子叶数、胎盘效率无显著影响(P>0.05),对新生羔羊脐带TGF-β3、ANGPT-1、FLT-1、KDR基因的相对表达水平无显著影响(P>0.05),但能显著提高VEGFA基因的相对表达水平(P<0.05)。而出生类型对胎盘重、子叶数、胎盘效率和新生羔羊脐带VEGFA、TGF-β3、FLT-1、KDR基因的相对表达水平无显著影响(P>0.05),但是三羔脐带ANGPT-1基因的相对表达水平显著高于双羔(P<0.05)。由此可见,妊娠母羊饲粮添加叶酸对胎盘发育没有显著影响,但是显著提高了新生羔羊脐带VEGFA基因的相对表达水平,有利于新生羔羊脐带血管生成。同时,新生羔羊三羔脐带ANGPT-1基因的相对表达水平显著高于双羔,有利于多羔脐带血管生成。 相似文献
17.
An experiment was conducted to evaluate the effect of a Ca salt supplement on lactating Awassi ewes and their lambs. Ninety Awassi ewes (average BW = 55 kg ± 1.13) were allocated into three treatment groups of 30 each; 0%, 3%, or 5% Ca salt supplemented groups. The experiment started at lambing and lasted for 60 d. During this period, milk production and composition, final body weights, total feed intake, serum cholesterol and triglycerides, weaning weights of lambs, and milk fatty acid profile were tested. Milk production and energy corrected milk increased (P < 0.05) with Ca salt level in the diet. Milk fat content was higher (P < 0.05) at 3% treatment group compared to 0% and 5% treatment groups. However, no differences were detected in content of crude protein and total solids, and milk energy value. Milk fat yield (g/d) increased (P < 0.05) as Ca salt in the diet increased. Final body weight was higher (P < 0.05) for 5% group when compared to the 0% group with no differences between the 3% group when compared to 0% and 5% groups. No differences were observed in feed intake of ewes. Metabolizable energy intake was greater (P < 0.05) for the 3% and the 5% treatment groups when compared to the 0% treatment group. Feed to milk ratio increased (P < 0.05) when increasing the level of Ca salt in the diet. Serum cholesterol was greater (P < 0.05) in the 5% treatment group than the 0% and 3% treatment groups for ewes and lambs. Serum triglyceride was similar among treatment groups in ewes whereas serum triglyceride was greater (P < 0.05) for lambs in 5% treatment group than 0% and 3% treatment groups. However, serum triglyceride was similar in ewes among treatment groups. Weaning weights and average daily gain of male lambs were higher (P < 0.05) in lambs fed Ca salt (3% and 5%) when compared to 0% treatment group. No differences were detected in weaning weights and average daily gain of female lambs among treatment groups. However, milk conversion ratio was better (P < 0.05) for the 5% group lambs than the 0% and 3% treatment groups. Ca salt reduced (P < 0.05) short and medium-chain milk fatty acids and increased (P < 0.05) content of long chain and unsaturated ones. These results of this indicate that Ca salt supplementation can improve milk production of lactating ewes, the growth rate of their lambs, and produce healthy quality value milk. 相似文献
18.
本研究旨在探明和田多胎红羊泌乳规律,提高双羔成活率。选取6只产双羔和田多胎红羊母羊为试验动物,检测其产后1~28 d泌乳量、乳成分变化规律;测量产后第1天母羊乳房体尺指标,并与泌乳量进行相关性分析。结果显示,和田多胎红羊产后1~28 d总泌乳量为29.87 kg,平均每日泌乳量为1.07 kg,泌乳量在第1~3天上升速度最快,在第21天达到峰值1.23 kg,泌乳曲线方程为：y=537t0.477e-0.033t;乳脂、非脂乳固体、密度、乳糖、固形物、蛋白质指标在和田多胎红羊母羊产后1~3 d快速下降,7~28 d趋于稳定,且6项指标第1天与第7、14、21、28天均差异极显著（P<0.01）;和田多胎红羊母羊产后第1天与第14、21、28天的泌乳量之间相关性不显著（P>0.05）,产后第2天与第28天的泌乳量相关性不显著（P>0.05）,其他均显著相关（P<0.05）;母羊产后第1、2、3、7天泌乳量与乳房宽呈显著相关（P<0.05）,母羊产后第14、21、28天泌乳量与乳房体尺指标相关性不显著（P>0.05）。以上研究结果为和田多胎红羊新类群种质特性、选育、饲料配制、羔羊早期断奶等提供理论依据。 相似文献
19.
Amanlou H Karimi A Mahjoubi E Milis C 《Journal of animal physiology and animal nutrition》2011,95(5):616-622
The aim of this study was to investigate the effects of supplementation with digestible undegradable protein (DUP) in diet during late pregnancy on colostrum production, lamb survival and growth. For 3 weeks prior to lambing, 41 Afshari ewes were assigned at random to three dietary treatments, namely a control (CDUP), moderate (MDUP) and high (HDUP) DUP group. The ewes (n = 14) in CDUP group were fed a protein maintenance level for pregnant ewes [83 g metabolizable protein (MP)/kg dry matter (DM)], while ewes in the MDUP (n = 13) and HDUP (n = 14) groups were fed diets provided 14% (94.7 g MP/kg DM) and 24% (104.3 g MP/kg DM) MP in excess of these requirements respectively, which this increment was coming from DUP (DUP/MP ratio 43.8; 51.0% and 57.6% respectively). All diets were isoenergetic (12 MJ ME/kg DM). All ewes received the same lactation diet after lambing. Ewes in HDUP tend to produce more colostrums (p < 0.1) and had higher protein, fat, and solids non-fat content (p < 0.05) in colostrums during the first 24 h after lambing. MDUP group had higher colostrum yield compared to CDUP (p < 0.1). The changes in body weight and body condition score of ewes were similar for all diets but placenta weight was higher in MDUP group (p < 0.05) than for HDUP and CDUP ewes. Lamb body weight at weaning was higher for males compared to females (p < 0.05), but was not different between treatments. HDUP ewes had higher blood glucose concentration in the pre-lambing period than other treatments (p < 0.05). In this period, increasing the level of DUP in diet increased the content of blood urea nitrogen (p < 0.05). It was concluded that increasing the DUP content of diet for 3 weeks prior to lambing above the standard requirements resulted in an increase in colostrums production but had no effect on lamb outcome to weaning. 相似文献
20.
There is a need to improve the lean tissue content of ruminant animals destined for meat production. Muscle fiber number is set during fetal development. The effect of undernutrition of pregnant ewes on subsequent muscle fiber characteristics of their offspring was investigated. The trial involved 32 pregnant ewes carrying twins. The ewes were allocated randomly to one of four groups: three different treatment groups (n = 8) and a control group (n = 8). The diet of the treatment groups was dropped to 50% of their daily requirement to support the ewe and allow for conceptus growth for varying periods before being returned to 100% of their daily requirement until term. Group d 30-70 ewes were fed 100% of their daily requirement until d 30, the diet was then decreased to 50% until d 70; it was then returned to 100% of their daily requirement until term. Group d 55-95 ewes were similarly restricted from d 55 through 95, and Group d 85-115 ewes were restricted from d 85 through 115. The control group was fed 100% of their daily requirement to support the ewe and allow for conceptus growth throughout gestation. After parturition, the lactating ewes were fed a normal commercial diet. On d 14 (after parturition), the lambs were slaughtered and the LM, semitendinosus (ST), and vastus lateralis (VL) were dissected and snap frozen. The immunochemical determination of myosin heavy-chain slow (MHC-slow) and myosin heavy-chain fast (MHC-fast) proteins was measured by immunoprobing of Western blots. The number of fast and slow fibers and the diameter of these fibers also were measured in each muscle sample by histochemical techniques. Decreased maternal nutrition before fiber formation (d 30 through 70) was observed to change the muscle characteristics of the newborn lambs. These lambs had significantly fewer fast fibers (P < 0.001) and significantly more slow fibers (P < 0.001) in both the LM and VL compared with the other groups. Maternal nutrient restriction at the other periods had no effect on the number of muscle fibers in the newborn lambs; however, a decrease (LM, P < 0.05; VL, P < 0.01; ST, P = 0.08) in muscle weight was observed in the lambs born to the ewes restricted between d 85 and 115 of gestation compared with the other groups. This study has shown that decreased maternal diet before muscle fiber formation will alter the muscle fiber development in the fetus. 相似文献