松辽黑猪及其不同杂交组合对比试验研究

选择松辽黑猪、大白×松辽黑猪。长白山野猪X松辽黑猪×松辽黑猪、巴克夏×松辽黑猪组合的育肥猪各16头,饲养于同一条件,测定生长性能,达到100kg左右体重时每个组合选择3头猪进行屠宰,测定胴体性能取肉样进行肉质测定。结果表明,大白×松辽黑猪组合生长速度最快,长白山野猪×松辽黑猪×松辽黑猪组合生长最慢;大白×松辽黑猪组合屠宰率最高,松辽黑猪屠宰率最低,瘦肉率各组差异不显著;各组肉质指标均达到优质水平,松辽黑猪失水率显著低于杂交组合组。建议大中小型养殖企业生产优质肉猪选用大白×松辽黑猪组合;中小型企业生产特色肉猪选甩长白山野猪×松辽黑猪×松辽黑猪组合;大中型养殖企业生产高档猪肉选用巴克夏×松辽黑猪组合。     

嘉兴黑猪新品系与外来公猪的杂交效果研究

试验选用外来长白公猪、大约克公猪和皮特兰公猪与嘉兴黑猪新品系母猪进行二元杂交并进行育肥对比试验。结果表明 :(1)嘉兴黑猪新品系母猪与外来公猪杂交 ,可显著提高杂种猪的瘦肉率 ,平均为 5 5 .4 5 % ,与当前生产上广泛推广应用的杜长嘉三元杂种猪瘦肉率 (5 5 % )相当。 (2 )在所有杂交组合中 ,以长白公猪×嘉兴黑猪新品系母猪的杂交组合效果最佳 ,表现为生长快 (日增重 6 34.15 9g) ,每 kg增重耗料最低 (3.0 73kg) ,瘦肉率较高 (5 5 .4 3% )。     

凉山黑猪及其杂交后代的胴体性能和肉品质测定

本试验通过测定凉山黑猪及其杂交后代的胴体性能及肉质品质,结果发现随着杂交程度的增加,猪只的毛色、体型和肉质皆发生变化,其中瘦肉率和眼肌面积等明显提高,肌肉脂肪含量逐渐下降;含黑猪血缘50％以上的杂交比例能较好地保持凉山黑猪的肌内脂肪含量在3％以上.     

新型关中黑猪胴体性能和肉质性能研究

试验随机选取6头关中黑猪育肥猪进行屠宰,测定其屠宰性能和肉质性状,为关中黑猪的提纯复壮和保种利用提供指导依据.结果表明,屠宰体重为95.29 kg时,屠宰率为74.61％,腿臀比例为27.23％;瘦肉率和脂肪率分别为48.96％,33.96％,背膘厚为37.46mm,眼肌面积为24.20 cm2.关中黑猪肉色评分3.53,大理石纹3.75;肌内脂肪含量为5.2％,肌纤维直径为64.8μm;关中黑猪肌内脂肪酸主要有十六酸和十八酸组成,饱和脂肪酸含量、单不饱和脂肪酸和多不饱和脂肪酸含量分别为41.43％,55.22％,3.37％;关中黑猪背最长肌氨基酸中必需氨基酸占34％,鲜味氨基酸占39％.试验结果提示,关中黑猪胴体性能的一些指标较早期研究有所退化,但仍保持了其肉质优良的特性.     

沂蒙黑猪不同杂交组合的对比试验

沂蒙黑猪不同杂交组合的对比试验李传良（山东省临沂地区畜牧站２７６００３）前言沂蒙黑猪体型大，身躯长，结构匀称，抗病耐粗，有较高的繁殖性能和肉用性能。为了测定以瘦肉型品种为父本，沂蒙黑猪或其二元杂交为母本的杂交仔猪的肉用性能，近年来我们在全区５个沂蒙黑...     

放牧与舍饲松辽黑猪胴体性能和肉质品质的比较

选择生长发育良好25 kg左右的松辽黑猪60头,随机分为两组,进行放牧与舍饲饲养。当体重达到100 kg左右时进行屠宰,测定两种饲养条件下的胴体性能和肉质品质。结果表明:放牧组背膘厚与板油率低于舍饲组,差异显著(P0.05)。放牧组肌纤维直径与肌纤维间隙高于舍饲组,差异显著(P0.05)。放牧组大理石纹评分、熟肉率、肌内脂肪、失水率、滴水损失、剪切力与舍饲组差异显著(P0.05)。放牧可显著影响松辽黑猪的肌肉品质。     

玉山黑猪

玉山黑猪是江西省玉山县的一个优良地方品种 ,具有皮薄、肉嫩、味道好、屠宰率较高等特点。繁殖性能 :性成熟早 ,母猪3～4月龄开始发情 ,公猪在3月龄出现性欲。母猪性周期19天 (18～22天 ) ,持续期3～4天 ,发情症状明显。一般母猪7月龄 ,体重50千克适配 ;公猪8月龄 ,体重55千克适配。在农村 ,母猪5～6月龄 ,体重30千克左右适配 ;公猪6月龄 ,体重30千克适配。怀孕期为113.07±1.9天。肥育性能 :玉山黑猪具有早期沉积脂肪的特点 ,据玉山黑猪原种场测定 ,2月龄屠宰 ,屠宰率60 % ,膘厚27毫米 ,花板油比率5.26 % ;4月龄屠宰 ,屠宰率64.5 % ,膘厚3…     

优良地方猪种--嘉兴黑猪

嘉兴黑猪是我国著名地方良种，主产于浙江省嘉兴市各县(市、区)，属太湖猪的一个主要类群，素以繁殖力高、性成熟早、耐粗饲、肉质鲜美和杂交效果显著而著称。     

硒都黑猪新品种选育进展报告

为更好地保护和开发利用湖北省优良地方猪种,满足优质种猪需求及多元化优质猪肉消费市场需求,本研究以地方品种恩施黑猪为基础,引入梅山猪和培育品种湖北白猪血缘,开展了硒都黑猪新品种培育。通过杂交亲本选择、杂交育种、基础群组建及6个世代的持续选育,新品种初产母猪总产仔数11.29±2.16头/窝、产活仔数10.74±2.06头/窝,经产母猪总产仔数12.67±2.43头/窝、产活仔数11.71±2.27头/窝;达90 kg体重日龄178.3±14.16 d,育肥期日增重646.77±47.16 g、饲料转化率2.84±0.22;体重达100 kg左右时屠宰,屠宰率70.63±2.14%,瘦肉率52.96±2.45%,肌内脂肪含量3.42±0.34%。硒都黑猪新品种的培育完全利用国内自有资源,充分发挥了亲本优势,繁殖性能好、生长速度适中、肉质优良,且耐粗饲、适应性良好,其育成将给我国地方猪的开发与利用、发展优质猪生产提供新的思路。     

松辽黑猪、雷香猪、杜长大白猪肉质性状及肌肉营养成分比较研究

为了比较松辽黑猪、雷香猪、杜长大白猪肉质性状及肌肉营养成分,选取松辽黑猪、雷香猪、杜长大白猪进行屠宰,对肉质性状、肌肉氨基酸及脂肪酸含量进行测定,结果表明：松辽黑猪剪切力、肌内脂肪含量显著高于杜长大白猪（P<0.05）,熟肉率显著高于雷香猪（P<0.05）,雷香猪剪切力、肌内脂肪含量极显著高于杜长大白猪（P<0.01）;松辽黑猪和雷香猪肌肉中丙氨酸含量极显著高于杜长大白猪（P<0.01）,甘氨酸含量松辽黑猪显著高于雷香猪（P<0.05）,极显著高于杜长大白猪（P<0.01）;雷香猪亚油酸含量显著低于杜长大白猪（P<0.05）。文章对优质高端黑猪肉生产群体的选择提供了参考。     

Growth,Reproductive Performance,Carcass Characteristics and Meat Quality in F1 and F2 Progenies of Somatic Cell-Cloned Pigs

The objective of this study was to examine the health and meat production of cloned sows and their progenies in order to demonstrate the application of somatic cell cloning to the pig industry. This study compared the growth, reproductive performance, carcass characteristics and meat quality of Landrace cloned sows, F1 progenies and F2 progenies. We measured their body weight, growth rate and feed conversion and performed a pathological analysis of their anatomy to detect abnormalities. Three of the five cloned pigs were used for a growth test. Cloned pigs grew normally and had characteristics similar to those of the control purebred Landrace pigs. Two cloned gilts were bred with a Landrace boar and used for a progeny test. F1 progenies had characteristics similar to those of the controls. Two of the F1 progeny gilts were bred with a Duroc or Large White boar and used for the progeny test. F2 progenies grew normally. There were no biological differences in growth, carcass characteristics and amino acid composition among cloned sows, F1 progenies, F2 progenies and conventional pigs. The cloned sows and F1 progenies showed normal reproductive performance. No specific abnormalities were observed by pathological analysis, with the exception of periarteritis in the F1 progenies. All pigs had a normal karyotype. These results demonstrate that cloned female pigs and their progenies have similar growth, reproductive performance and carcass quality characteristics and that somatic cell cloning could be a useful technique for conserving superior pig breeds in conventional meat production.     

宁乡猪及杜宁二元杂种猪的胴体与肉质性状测定

为评价宁乡猪和杜洛克猪的杂交效果,本实验分别测定了91头宁乡猪和76头杜宁二元杂种猪的胴体性状和肉质性状指标,并对不同性状指标进行相关性分析.结果 表明:在胴体性状方面,与宁乡猪相比,杜宁二元杂种猪的体直长、体斜长、胴体重、肋骨数和眼肌面积极显著提高,背膘厚和皮厚极显著降低;在肉质性状方面,杜宁二元杂种猪的肉色红度(a...     

地方猪种的杂交利用方式以及轮回杂交在其中的应用

文章将地方猪种的种质特性特点、杂交利用方式以及轮回杂交在地方猪种中的利用等进行综述,以期为地方猪种的选育和利用提供建议及参考。     

莆田黑猪繁殖性状的通径分析

本文对莆田黑猪206头初产母猪的繁殖性状进行了相关和通径分析,并分析了各繁殖性状对断乳窝重的直接影响和间接影响以及决定程度的大小.结果表明,莆田黑猪繁殖性状间在表犁值上都存在不同程度的相关,其中以产活仔数与初生窝重的表犁相关系数最高(0.943);影响断乳窝重的主要因素大小依次是20日龄窝重、产活仔数、20日龄个体重、初生窝重、初生重、乳头数和产仔数.揭示了莆田黑猪各繁殖性状问的真实关系.     

Comparisons of carcass traits,meat quality,and serum metabolome between Shaziling and Yorkshire pigs

This study aims to compare the meat quality of Shaziling and Yorkshire pigs and to find the potential indicator in serum for superior meat quality. Six Shaziling and Yorkshire pigs at 30, 60, 90, 150, 210, and300 d of age were selected to examine carcass traits, meat quality, and serum metabolome. The results showed that the body weight, carcass length, and loin eye area of Shaziling pigs at 150, 210, and 300 d of age were significantly lower than those of Yorkshire pigs (P <0.05). Shaziling ...     

里岔黑猪哺乳仔猪饲养管理技术

哺乳仔猪是指从出生到断奶阶段的仔猪,是生猪养殖各环节的关键和基础.哺乳仔猪成活率高低关系到猪场养猪生产水平的高低,是影响养殖场经济效益的重要因素.因此,提高哺乳仔猪成活率一直是猪场所关心的.文章主要综述了里岔黑猪哺乳仔猪培育在环境、营养、管理和保健等方面技术要点,以期为猪场提供参考.     

猪RYR_1基因的PCR-RFLP分析和氟烷基因利用的研究

采用ＰＣＲ－ＲＦＬＰ分析技术，以血液或猪毛提取ＤＮＡ为模板，建立了快速和简便的从分子水平上鉴别ＲＹＲ１基因型的方法，其准确率为１００％。不同品种（系）初步配套杂交结果显示：皮特兰×抗应激猪的胴体品质优于杜洛克×抗应激猪（Ｐ＜０．０５或Ｐ＜０．０１），而肉质优于皮特兰×应激群猪（Ｐ＜０．０１），并提出了氟烷基因的利用策略     

Relationships between longevity,lifetime productivity,carcass traits and conformation in Polish maternal pig breeds

The objective of this study was to obtain heritability estimates for longevity (length of life, length of productive life, number of litters) and lifetime productivity traits (lifetime pig production, lifetime pig efficiency, lifetime litter efficiency) and genetic correlation between them and litter size at first farrowing, growth (ADG), backfat thickness (BF), loin depth, lean meat percentage (LMP), phenotypic selection index (PSI), and exterior in 19423 Polish Landrace (L) and 16049 Polish Large White (LW) sows. Heritabilities for longevity and lifetime productivity traits were 0.10–0.13 for L sows and 0.09–0.11 for LW sows depending on the trait definition. The genetic correlations among these traits were all high and positive, ranging from 0.76 to 0.99. Antagonistic genetic correlations (?0.21 to ?0.26) were found between longevity traits and PSI and LMP in LW sows, while in L sows the respective parameters were lower and not significant for length of productive life. The number of live‐born piglets in the first litter was positively correlated with lifetime pig production and lifetime pig efficiency in both breeds. The genetic correlations of longevity and lifetime pig production with ADG, BF, loin depth and exterior were small, and in most cases, not significant.