共查询到18条相似文献，搜索用时 394 毫秒
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《黑龙江畜牧兽医》2018,(23)
为了研究巴克夏猪与地方猪种的杂交效果,试验将巴克夏猪分别与6个地方猪种(成华猪、雅南猪、青峪猪、内江猪、丫杈猪和乌金猪)杂交,测定了360头杂交猪的肥育性能和180头杂交猪的胴体性能、肉质常规理化性能、滋味物质和挥发性风味物质。结果表明:巴克夏猪×丫杈猪的料重比和瘦肉率均极显著优于巴克夏猪×成华猪和巴克夏猪×青峪猪(P0.01),眼肌面积显著高于巴克夏猪×成华猪(P0.05)、极显著高于巴克夏猪×青峪猪(P0.01);巴克夏猪×雅南猪的肉色评分极显著低于巴克夏猪×丫杈猪、巴克夏猪×乌金猪和巴克夏猪×成华猪(P0.01),硬脂酸含量显著高于巴克夏猪×丫杈猪和巴克夏猪×乌金猪(P0.05)。说明巴克夏猪×成华猪和巴克夏猪×青峪猪杂交后代的胴体性能较差,巴克夏猪×雅南猪杂交的肉质风味较差,巴克夏猪×丫杈猪杂交综合性能最好。 相似文献
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为研究胰岛素样生长因子-1(IGF-1)和胰岛素样生长因子结合蛋白-3(IGFBP-3)在血液中的含量及其与胴体和肉质表型指标的相关性,采用ELISA技术检测了丫杈猪、乌金猪、成华猪、雅南猪和藏猪血液中IGF-1和IGFBP-3的含量,同时测定了肌纤维直径和眼肌面积。结果显示:藏猪肌纤维直径最小,且显著低于丫杈猪、乌金猪、成华猪和雅南猪(P<0.05);丫杈猪和乌金猪的眼肌面积极显著高于藏猪(P<0.01),显著高于成华猪(P<0.05);血液中丫杈猪的IGF-1含量极显著地低于乌金猪、雅南猪和藏猪(P<0.01),乌金猪、成华猪和雅南猪的IGF-1含量极显著地低于藏猪(P<0.01);丫杈猪的IGFBP-3含量极显著地高于雅南猪和藏猪(P<0.01),乌金猪的IGFBP-3在血液中的含量显著地高于雅南猪和藏猪(P<0.05);相关性分析显示,肌纤维直径与IGF-1呈显著负相关(r=-0.51,P<0.05),眼肌面积与IGFBP-3呈显著正相关(r=0.57,P<0.05)。结果表明:可以通过调控IGF-1和IGFBP-3含量来调控猪的胴体品质和肉质。 相似文献
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《养猪》2019,(5)
为了研究mRNA表达量与猪胴体及肉质性状的相关性,试验采用荧光定量PCR技术(QRT-PCR)检测了引进猪种大约克夏猪和6个四川省地方猪种背部皮下脂肪中IGF-1和PPARγ的差异表达情况。结果显示:大约克夏猪IGF-1相对表达量显著或极显著高于所有地方猪种(P0.05或P0.01),地方猪种中藏猪最高,显著高于丫杈猪、内江猪、青峪猪(P0.05);大约克夏猪PPARγ相对表达量极显著高于青峪猪、藏猪(P0.01),显著高于雅南猪(P0.05),地方猪种中成华猪、丫杈猪显著高于青峪猪和藏猪(P0.05)。相关分析显示,IGF-1、PPARγ分别与体脂率呈极显著和显著负相关(P0.01,P0.05),与多不饱和脂肪酸含量呈极显著正相关(P0.01);此外,IGF-1与单不饱和脂肪酸含量呈极显著负相关(P0.01),PPARγ与肌内脂肪含量呈显著负相关(P0.05)。 相似文献
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《养猪》2021,(2)
为了研究四川地方猪种的杂交效果,试验以6个地方猪种(成华猪、雅南猪、青峪猪、内江猪、丫杈猪和凉山猪)作为母本,巴克夏猪、杜洛克猪分别作为第一父本和终端父本进行杂交,并以川藏黑猪为参照,测定了7个组合杂种猪的肥育、胴体、肉质常规理化性能、滋味物质和挥发性风味物质。结果表明,90kg和100kg两个体重阶段,杜巴丫日增重、瘦肉率最高,料重比最低,杜巴凉屠宰率最高,杜巴雅眼肌面积最大;川藏黑猪、杜巴青与杜巴丫肌纤维较细,肌内脂肪含量更丰富,肉质风味更优;地方猪三元杂交组合中杜巴丫综合性能最好。与90 kg体重相比,100 kg体重三元杂种猪的日增重、肌内脂肪含量有明显提高,瘦肉率有所降低但基本差异不显著,料重比及其它肉质指标差异也不显著。推荐川藏黑猪及四川6个地方猪种采用杜巴本三元杂交方式生产商品猪时以100 kg体重出栏为宜。 相似文献
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为了研究miRNA表达量与猪胴体及肉质性状的相关性,试验采用荧光定量PCR(qRT-PCR)技术对引进猪种大约克夏猪和6个四川省地方猪种(丫杈猪、内江猪、成华猪、青峪猪、雅南猪和藏猪)背部皮下脂肪中miR-128和miR-133b的差异表达情况进行测定和分析。结果表明:大约克夏猪miR-128相对表达量显著或极显著高于除雅南猪以外的其余地方猪种(P0. 05或P0. 01),地方猪种中雅南猪miR-128相对表达量最高,显著高于丫杈猪(P0. 05);大约克夏猪miR-133b相对表达量最高,显著高于青峪猪(P0. 05),地方猪种间差异不显著(P0. 05)。相关分析结果表明,miR-128、miR-133b与瘦肉率呈显著正相关(P 0. 05),miR-128与单不饱和脂肪酸、多不饱和脂肪酸含量分别呈极显著负相关(P0. 01)和极显著正相关(P0. 01)。说明miR-128和miR-133b可能对猪脂肪沉积有抑制作用,miR-128还可能抑制单不饱和脂肪酸的生成,促进多不饱和脂肪酸的生成。 相似文献
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为了研究miRNA表达量与猪胴体及肉质性状的相关性,采用荧光定量PCR技术(qRT-PCR)检测了引进猪种大约克夏猪和6个四川省地方猪种背部皮下脂肪中miR-1和miR-369的差异表达情况。结果:除miR-1与藏猪差异不显著外,2种miRNA在大约克夏猪背部皮下脂肪中的表达水平显著高于地方猪种(P<0.05);地方猪种中,miR-1和miR-369表达水平分别在藏猪和雅南猪中最高;相关性分析显示,miR-1和miR-369在背部皮下脂肪中表达水平均与瘦肉率、多不饱和脂肪酸含量呈极显著正相关(P<0.01),与单不饱和脂肪酸含量均呈显著负相关(P<0.05),miR-369表达水平还与平均背膘厚呈极显著负相关(P<0.01)。试验表明miR-1和miR-369可能对猪脂肪沉积和单不饱和脂肪酸生成起负调控作用,对多不饱和脂肪酸生成起正调控作用。 相似文献
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《养猪》2019,(5)
为了研究肿瘤坏死因子-α(TNF-α)和脂肪酸合成酶(FAS)在血液中的含量与肉质风味表型指标的相关性,试验采用酶联免疫吸附试验(ELISA)技术检测了6个地方猪种血液中TNF-α和FAS的含量。结果表明:血液中的TNF-α含量成华猪最高(183 pg/mL),内江猪最低(138.97 pg/mL);血液中的FAS含量丫杈猪最高(8.47 ng/mL),雅南猪最低(6.43 ng/mL)。相关性分析显示,TNF-α和FAS在血液中的含量与肌内脂肪含量和肌纤维直径呈负相关,与瘦肉率呈正相关。表明TNF-α和FAS对猪肉品质具有负调控作用,而对猪胴体品质具有正调控作用。 相似文献
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旨在分析四川省7个地方猪种类群和山东省徒河黑猪重要经济性状关联SNP位点基因型分布及群体间遗传结构。本研究采用中芯一号芯片对23头成华猪、26头雅南猪、60头青峪猪、57头内江猪、151头丫杈猪、57头乌金猪（凉山类群）、51头平原藏猪、109头高原藏猪和28头徒河黑猪共562头健康种猪进行了单核苷酸多态性（single nucleotide polymorphism,SNP）分析,利用Plink软件对获得的基因型数据进行质控,结合R等软件,统计分析猪7个重要经济性状的基因型;采用Mega X软件进行聚类分析,使用Plink软件进行主成分（PCA）分析,通过VCFtools软件计算猪群间的群体遗传分化指数（Fst）,分析群体间遗传关系远近。结果显示,四川省地方猪群体中,采食量、酸肉和应激性状的非优势基因型比例均在2.20%以下;抗仔猪腹泻、料重比（FCR）、公猪精液品质和多肋性状的非优势基因型比例分别为8.99%、11.80%、73.97%和95.32%;徒河黑猪群体中,应激性状已无q等位基因,采食量和酸肉性状的非优势基因型比例较低,均为3.57%;公猪精液品质、抗仔猪腹泻、料重比和多肋性状的非优势基因型比例较高,分别为39.29%、50.00%、82.14%和92.86%;聚类和主成分分析显示,徒河黑猪与四川地方猪种间遗传距离远,丫杈猪、乌金猪、内江猪和藏猪（平原和高原）各自聚为一类,品种间群体分层结构明显,雅南猪、成华猪、青峪猪聚为一类;Fst指数计算结果表明,同属于湖川山地猪的丫杈猪和青峪猪间存在高度遗传分化。结果提示,四川省地方猪群体的采食量、酸肉、应激、抗仔猪腹泻和料重比性状的非优势基因型比例较低,公猪精液品质和多肋性状的非优势基因型比例较高;徒河黑猪群体的应激性状已无q等位基因,采食量和酸肉性状的非优势基因型比例较低,公猪精液品质、抗仔猪腹泻、料重比和多肋性状的非优势基因型比例较高;群体遗传结构研究结果表明,丫杈猪与青峪猪都归类于湖川山地猪有待商榷。 相似文献
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为了解豫西黑猪屠宰性能、肉品质等遗传性状,以及与河南地方猪确山黑猪间的差异,本研究挑选相同条件下健康的豫西黑猪（120.28 kg±6.96 kg）和确山黑猪（117.80 kg±8.76 kg）各8头,按相关规定开展体尺指标、屠宰性能、肉品质及血液指标测定,即对豫西黑猪与确山黑猪体尺指标（体高、体长、胸围、管围等）、屠宰性能（胴体重、胴体长、皮率、骨率、屠宰率等）、肉品质（肉色、大理石纹、pH、肌内脂肪、粗灰分等）、血液指标（白细胞数、红细胞数、血小板数、血小板压积等）及两种猪肌肉氨基酸含量进行了测定。结果表明,豫西黑猪体长、胴体长、皮率和头重均显著低于确山黑猪（P<0.05）,背膘厚、瘦肉率、脾脏重、心脏重和眼肌面积均极显著或显著高于确山黑猪（P<0.01;P<0.05）。在肉品质方面,豫西黑猪大理石纹评分、pH45 min、pH24 h、粗蛋白质及粗灰分含量均显著或极显著低于确山黑猪（P<0.05;P<0.01）,但水分和磷含量均显著或极显著高于确山黑猪（P<0.05;P<0.01）。在血液指标方面,豫西黑猪血小板数目和血小板压积均极显著低于确山黑猪（P<0.01）,但其他指标与确山黑猪无明显差异（P>0.05）。豫西黑猪精氨酸、缬氨酸和组氨酸含量均显著或极显著高于确山黑猪（P<0.05;P<0.01）,甘氨酸含量极显著低于确山黑猪（P<0.01）。综上所述,豫西黑猪和确山黑猪在体尺指标、肉品质及血液指标方面均无明显差异,在屠宰性能方面豫西黑猪稍优于确山黑猪,均可为消费者提供品质优良的猪肉。 相似文献
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Wild boars, because of their large size and ability to survive adverse conditions, are usually used to cross with domestic breeds to improve the quality of domesticated pigs. This study aimed to investigate the growth performance, slaughter performance, and meat quality of Ziwuling crossbred pigs. Crossbred pigs in four groups (n = 8 per group, 4 boars and 4 sows, all aged 100 days), F1 [wild × B (Bamei)], F1 × B, F1 × Y (Yorkshire), and F1 × F1, were selected at a commercial pig farm. Growth performance, slaughter performance, and meat quality of these crossbred pigs were determined. Characteristics of fatty acids, amino acids, and longissimus muscle fiber in relation to growth, carcass, and meat quality traits were also investigated. Pigs in F1 and F1 × F1 groups had lower average daily weight gain, water and storage loss rates, larger meat color score, higher muscle amino acid levels, larger muscle fiber diameter, and higher ratio of flavor amino acids to unsaturated fatty acids compared to other groups. Crossbred pigs with higher rate of wild boar’s consanguinity could improve production performance, slaughter performance, and meat quality. Thus, crossbreeding wild pig with domestic breeds might be an effective method to improve meat quality and flavor. 相似文献
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YANG Zhong-cheng GONG Yu YANG Mao-lin LIAO Qiao-ping YANG Chang-ping WU Yu-ping PAN Dao-xing LIU Ruo-yu 《中国畜牧兽医》2016,43(9):2317-2325
In order to study the effect of slaughter weight on carcass traits,meat quality,amino acids and fatty acids in muscle of Jiangkou Luobo pigs,36 Jiangkou Luobo pigs (6 pigs of 60,70,80,90,100 and 110 kg body weight,respectively) were selected to determine carcass quality,meat quality characteristics and nutritious component and analyze their changes with weight.The results showed that before the body weight reaching to 80 kg,the slaughter rate and loineye area were increased fast,the contents of various amino acids were increased obviously.And when the body weight was 80 kg,the fatty acids were rich,including oleic acid and linoleic acid.When the body weight was more than 90 kg,there were excessive fat deposition in porcine somatic and the content of lysine,valine,threonine and other essential amino acids were extremely significant or significant differences (P<0.05;P<0.01).Generally Jiangkou Luobo pigs with the 80 kg body weight had the better carcass traits and meat quality,rich and ideal amino acid and fatty acid composition in muscle,especially had the high content of essential amino acids and flavor amino acid,and suitable proportion of unsaturated fatty acid and saturated fatty acid.Therefore,the reasonable slaughter weight of Jiangkou Luobo pigs was about 80 kg. 相似文献
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KANG Run-min LI Yao LV Xue-bin JI Gao-sheng YING San-cheng ZENG Kai LI Yan YIN Ming-yu 《中国畜牧兽医》2017,44(11):3121-3129
To study the diversity and composition of the bacterial community from cecum samples from Yacha pig, Qingyu pig and Wujin pig, the investigation was designed to reveal mechanism of roughage resistance. Illumina amplicon sequencing of 16S rDNA Tag was used to analyze the cecum microbial diversity of Yacha pig, Qingyu pig and Wujin pig at 90 kg liveweight. The results indicated that the core flora of the three breeds were Bacteroidetes and Firmicutes at the phylum level and Prevotella and Bacteroides at the genus level. Meanwhile bacteria associated with cellulose decomposition were found in all three breeds, in which the number of Fibrobacter and Clostridium in Yacha pig were significantly higher than that in Qingyu pig and Wujin pig (P<0.05),and the number of Prevotella in Yacha pig was significantly higher than that in Wujin pig (P<0.05). The number of Bacteroides in Qingyu pig was significantly higher than that in Yacha pig (P<0.05).The number of Spirochaetes in Qingyu pig was significantly higher than that in Wujin pig (P<0.05). It could conclud that the composition of the cecum bacteria community was similar in above pig breeds, but there were significant differences in distribution and quantity. According to analysis of microbial related to cellulose digestibility, Yacha pig was the strongest among the three breeds, followed by the Qingyu pig and Wujin pig. 相似文献
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To explore the changes in body size indexes,carcass traits and meat quality of Baixi pig×Turok hybrids F1 (DBF1),16 Baixi pigs and 6 DBF1 pigs which were health and 10 months old were chosen for determining the body size indexes,slaughter performance and meat quality. The results showed that there was no significant difference of body size indexes between Baixi pig and DBF1 pigs (P>0.05).The eye muscle area (28.33 cm2),meat color (3.00),marbling (3.50) of DBF1 pigs kept a good level,while the unsaturated fatty acid content (64.33%),the intramuscular fat content (4.08%) and leg to buttock ratio (31.32%) were increased, back fat thickness (24.69%),total flavor amino acid amount (48.46%) were significantly or extremely significantly decreased (P<0.05;P<0.01),and the muscle tenderness,water retention capacity were significantly reduced (P<0.05). In conclusion,the DBF1 pigs could maintain the good meat performance,sensory index and tender degree of muscle,improve the hindquarters meat performance,lean meat and the intramuscular fat contents,but the muscle tenderness,nutritional value, freshness and water retention capacity were declined. 相似文献
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本试验中旨在比较PRKAG3基因在不同品种猪不同生长阶段骨骼肌中的表达差异,并探讨PRKAG3基因与肉质的关系。挑选15 kg左右的汉普夏阉公猪17头和长撒阉公猪16头,饲喂相同饲粮,当体重分别达到20和50 kg时,2个品种的猪分别屠宰5头,体重达到100 kg时分别屠宰7和6头。各生长阶段屠宰后均测定骨骼肌pH、肌糖原含量以及PRKAG3基因表达量,且在100 kg阶段屠宰后同时测定肉质性状。结果表明:1)在不同生长阶段长撒猪骨骼肌中PRKAG3基因的表达量均高于汉普夏猪,特别是在100 kg阶段,长撒猪骨骼肌中PRKAG3基因的表达量是汉普夏猪的6.81倍(P0.05)。长撒猪与汉普夏猪骨骼肌中PRKAG3基因的表达量均随体重的增加而增加,但汉普夏猪不同生长阶段PRKAG3基因的表达量差异不显著(P0.05),而长撒猪PRKAG3基因的表达量在100 kg阶段时显著高于20和50 kg阶段时(P0.05)。2)汉普夏猪和长撒猪的肉质存在差异。汉普夏猪的滴水损失和失水率显著高于长撒猪(P0.05),而熟肉率、黄度(b)值极显著低于长撒猪(P0.01),剪切力和pH2(屠宰后24 h的pH)显著低于长撒猪(P0.05)。与长撒猪相比,汉普夏猪具有较高的肌糖原含量(P0.05)。3)猪骨骼肌中PRKAG3基因的表达量与肉质的相关性存在品种效应。汉普夏猪骨骼肌中PRKAG3基因表达量与滴水损失呈正相关,与熟肉率呈负相关,与pH2呈显著负相关(P0.05)。长撒猪骨骼肌中PRKAG3基因表达量与滴水损失和失水率呈正相关,与pH2呈负相关。上述结果表明,猪骨骼肌中PRKAG3基因具有品种和生长阶段表达差异;猪骨骼肌中PRKAG3基因的表达量与肉质性状相关,特别是与pH2,二者呈显著负相关。 相似文献
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LI Wen-tong LIU Ying ZHOU Rong SHEN Zi-quan DONG Sheng-hua SONG Xiao-tao WANG Yue-jiang TANG Hui 《中国畜牧兽医》2017,44(7):2057-2064
To further understand the germplasm characteristics of Jiangquan Black pig,100 kg Jiangquan Black pigs (10 barrows, 10 sows) and 10 Duroc×Landrace×Yorkshire (DLY) pigs under the same conditions were randomly selected to analyse the slaughter performance and meat quality according to related rules. After slaughtered,the carcass index (carcass weight, loin muscle area, carcass length and backfat thickness etc), meat quality physical indicators (pH, meat color, marbling, drip loss etc), gerneral chemical index (the contents of crude protein, intramuscular fat, moisture and ash etc) and the proportion of amino acids in Jiangquan Black pig were analyzed. The results showed that, Jiangquan Black pig carcass lean meat rate was relatively low, the loin muscle area was reduced by about 30% (P<0.05) compared with DLY pig, while the backfat thickness was higher than that of DLY pig (P<0.05). The meat color, marbling, drip loss, cooking loss, water loss rate index and intramuscular fat content of Jiangquan Black pig were significantly better than that of DLY pigs (P<0.05), the rate of water loss and drip loss and cooking loss were decreased by 4.0%, 3.1% and 2.7%, intramuscular fat content increased by 150.0%. Therefore, The lean yield of Jiangquan Black pig was less than DLY pig, but water retention property, intramuscular fat content, meat color, marbling, meat quality indexes were significantly better than that of DLY pig. In conclusion, Jiangquan Black pig could provide good quality pork for consumers. 相似文献