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Effects of dietary supplementation with algae, sunflower oil, or soybean oil, and age on fat content, fatty acid profile and the expression of related genes in rabbits 饲粮中添加海藻、葵花籽油或大豆油以及年龄对家兔脂肪含量、脂肪酸谱及相关基因表达的影响
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0010
Dorota Maj, Łukasz Migdał, Piotr Zapletal
>Abstract The aim of this study was determine the effect of different dietary supplements (algae, sunflower oil, or soybean oil) and age (12 and 18 weeks) on the fat content, fatty acid (FA) profile, and expression of the fat mass and obesity associated ( FTO ) and fatty acid binding protein 4 ( FABP4 ) genes in rabbit muscle. Rabbits (n = 160) were randomly divided into four groups. The control group (C) received non-supplemented pellets, while in the other groups the pellet contained 1% algae (A), 3% sunflower oil (OS), or 3% soybean (SO) oil. Soybean and sunflower oil (3%) in the diet increased the linoleic acid (LA) content in meat of 12-week-old rabbits. The use of algae (1%) in the diet increased the n-3 PUFAs eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) compared with the vegetable oil and control groups, and decreased the n-6/n-3 ratio. The effect of the diet on FTO and FABP4 gene expression depended on the age of the rabbits. In older animals (18 weeks of age) the expression of these genes was highest in the group with 1% algae. Furthermore, the FA profile and FTO and FABP4 gene expression were affected by the age of rabbits, but not by sex. The results showed that diet is an important tool to modulate the FA profile in rabbit meat by changing the expression of fat metabolism–related genes.
摘要本研究旨在研究不同饲粮(藻类、葵花籽油或大豆油)和日龄(12周和18周)对家兔肌肉脂肪含量、脂肪酸(FA)谱以及脂肪量和肥胖相关(FTO)和脂肪酸结合蛋白4 (FABP4)基因表达的影响。160只家兔随机分为4组。对照组(C)给予未添加的微丸,而其他组的微丸中含有1%的藻类(A)、3%的葵花籽油(OS)或3%的大豆油(SO)。饲粮中添加3%的大豆油和葵花籽油可提高12周龄家兔肉中亚油酸(LA)含量。与植物油组和对照组相比,饲粮中添加1%海藻可提高n-3 PUFAs、二十碳五烯酸(EPA)和二十二碳六烯酸(DHA)含量,降低n-6/n-3比值。日粮对FTO和FABP4基因表达的影响与家兔的年龄有关。在年龄较大的动物(18周龄)中,这些基因的表达在含有1%藻类的组中最高。此外,FA谱及FTO和FABP4基因的表达受年龄的影响,而不受性别的影响。结果表明,饲粮是通过改变脂肪代谢相关基因的表达来调节兔肉中FA谱的重要工具。
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引用次数: 0
Lipid sources and emulsifiers in Japanese quail diets as modulators of performance, egg quality and yolk fatty acid profile 日本鹌鹑日粮中的脂质源和乳化剂对生产性能、蛋品质和蛋黄脂肪酸分布的调节作用
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0011
Felipe Cardoso Serpa, Rodrigo Garófallo Garcia, Maria Fernanda de Castro Burbarelli, Claudia Marie Komiyama, Jean Kaique Valentim, Vivian Aparecida Rios de Castilho, Diandra Pinto Della Flora, Bruna Barreto Przybulinski, Claudia Andréa Lima Cardoso, Fabiana Ribeiro Caldara, Rafael Henrique Tonissi e Buschinelli de Goes
Abstract Using emulsifiers in poultry diets may increase digestibility of alternative lipid sources and enrich poultry egg yolks altering their fatty acid composition. This study aimed to evaluate performance, nutrient digestibility, egg quality, egg quality according to their storage period, and the fatty acid profile of Japanese quail egg yolk ( Coturnix coturnix japônica ). The design was completely randomized, in which 270 female quails were allocated in a 3x2 factorial diet arrangement: three lipid sources (soybean oil, poultry fat, and beef tallow), supplemented or not with an emulsifier, following two nutritional strategies – a diet formulated to meet the nutritional requirements proposed by INRA and a diet formulated with a reduction of 96 Kcal/kg of feed and added emulsifier. The effects of interactions between the lipid sources and the emulsifier were studied, their isolated effects when interactions were absent and the effect of storage time, and their interactions with the factors evaluated for egg quality variables. Feed intake was greater when beef tallow was added to the diets, while feed conversion was worse for birds fed diets with soybean oil and the emulsifier. Quails fed the diet with the emulsifier and soybean oil produced better quality eggs represented by the higher Haugh unit. Diets with beef tallow and poultry fat provided a higher percentage of palmitic and unsaturated fatty acids in the quail egg yolk. Alternative lipid sources such as beef tallow and poultry fat can be used as a substitute for soybean oil with added emulsifiers in diets for egg-laying quails without impairing performance and egg quality. The use of emulsifiers with alternative lipid sources to soybean oil can be considered a nutritional strategy in laying quail diets, but the reduction of energy in the diet must be adequate for the species.
在家禽饲粮中使用乳化剂可以提高替代脂质来源的消化率,丰富家禽蛋黄,改变其脂肪酸组成。本试验旨在评价日本鹌鹑蛋黄(Coturnix Coturnix japônica)的生产性能、营养物质消化率、蛋品质和蛋品质。试验采用完全随机化设计,选取270只雌性鹌鹑,采用3 × 2因子饲粮配置,3种脂肪来源(大豆油、家禽脂肪和牛脂)分别添加或不添加乳化剂,分别饲喂符合INRA营养要求的饲粮和减少96 Kcal/kg饲料并添加乳化剂的饲粮。研究了脂质源与乳化剂相互作用的影响、相互作用不存在时的孤立效应和储存时间的影响,以及它们与鸡蛋品质变量评价因素的相互作用。饲粮中添加牛油时,采食量较大,而添加豆油和乳化剂时,饲料转化率较差。饲粮中添加乳化剂和豆油的鹌鹑产蛋质量较好,其哈氏单位较高。添加牛油和家禽脂肪的饲粮在鹌鹑蛋黄中提供了更高比例的棕榈酸和不饱和脂肪酸。在鹌鹑日粮中添加乳化剂后,可使用牛油和家禽脂肪等替代油脂源替代大豆油,而不会影响生产性能和蛋品质。使用乳化剂替代豆油可以被认为是产蛋鹌鹑日粮的一种营养策略,但日粮中能量的减少必须对该物种足够。
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引用次数: 0
Localization of embryonic stem cells lacking E-cadherin in a mouse blastocyst 缺乏e -钙粘蛋白的胚胎干细胞在小鼠囊胚中的定位
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0012
Katarzyna Filimonow, Magdalena M. Bańska, Marek Maleszewski
Abstract Here we present our results regarding the role of E-cadherin (CDH1, cadherin 1) in the specification of embryonic stem cells (ESCs) in the embryo environment. It has been previously shown that, when forming embryoid bodies with wild-type ESCs, ESCs lacking a functional copy of the gene encoding the adhesive protein E-cadherin (Ecad −/− ) preferably sort out to the outside compartment, thus forming the primitive endoderm (PrE) lineage. However, little or no information is available regarding the dynamics of Ecad −/− cells in the actual blastocyst, and so the aim of this work was to determine in which of the three blastocyst cell lines - trophoblast (TE), epiblast (Epi), or PrE - Ecad −/− cells would be located in the embryo environment. For this purpose we injected ESCs into embryos at various stages of pre-implantation development. We used a H2B-GFP cell line expressing histone H2B conjugated with green fluorescent protein (H2BEGFP), as well as a Ecad −/− cell line, in which cells exhibit weaker adhesive properties than wild-type Esc because of their allelic deficiency in the locus encoding cadherin CDH1. We have demonstrated that these cells exhibit a trend to locate in the TE and much less frequently in the Epi, but never in the PrE. We propose that this may be due to differences in the expression of genes characteristic of these cell lines within the Ecad −/− cell colony.
在这里,我们介绍了我们关于E-cadherin (CDH1, cadherin 1)在胚胎环境中胚胎干细胞(ESCs)规范中的作用的研究结果。先前的研究表明,当用野生型ESCs形成胚状体时,缺乏编码粘附蛋白e -钙粘蛋白(Ecad−/−)的基因功能拷贝的ESCs更倾向于向外室分选,从而形成原始内胚层(PrE)谱系。然而,关于Ecad−/−细胞在实际囊胚中的动态信息很少或没有,因此本工作的目的是确定三种囊胚细胞系-滋养细胞(TE),外胚层细胞(Epi)或PrE - Ecad−/−细胞将位于胚胎环境中。为此,我们将胚胎干细胞注射到胚胎着床前发育的各个阶段。我们使用了表达组蛋白H2B与绿色荧光蛋白(H2BEGFP)结合的H2B- gfp细胞系,以及Ecad - / -细胞系,其中细胞表现出比野生型Esc更弱的粘附特性,因为它们编码钙粘蛋白CDH1的等位基因缺失。我们已经证明,这些细胞倾向于定位于TE,而很少出现在Epi中,但从未出现在PrE中。我们认为,这可能是由于这些细胞系在Ecad−/−细胞群内的基因表达差异所致。
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引用次数: 0
The effect of backfat thickness determined in vivo in breeding gilts on their reproductive performance and longevity 养殖后备母猪体内测定背膘厚度对其繁殖性能和寿命的影响
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0013
Justyna Więcek, Agnieszka Warda, Tadeusz Blicharski, Marcin Sońta, Anna Zalewska, Anna Rekiel, Martyna Batorska
Abstract The aim of this study was to determine the effects of backfat thickness (mean standardised measurement from in vivo assessment) of Polish Large White (PLW) gilts on their reproductive performance and productive lifespan. The study included 5,122 PLW gilts from 160 breeding herds in Poland, which reproductive performance was analysed on the basis of the rearing results of 20,662 litters. The gilts were divided into two groups differing in mean standardised backfat thickness (P2+P4/2) on the performance test day: I≤10 mm, II>10 mm. Sows in group I vs II had a three month shorter herd life (P≤0.001), gave birth to fewer litters and piglets (P≤0.001), but the average number of piglets born alive and reared to 21 days of age/litter was higher in them (P≤0.001). The number of live-born piglets per 100 days of reproductive life in group I was greater than in group II (P≤0.001). When culling sows in cycles 1–8 and later, there was more intensive culling in group I vs II from cycle 1 to 6 and a lower percentage of sows remaining in the herd. In group I vs II, the proportion of sows with a lifetime productivity of fewer than 30 piglets was 5.5 percentage points higher and that with a production of more than 100 piglets was 1.9 percentage points lower. Our results indicate that the level of fat reserves determined in vivo in breeding gilts can be a preliminary information about the reproductive potential of sows and their predisposition to longevity.
摘要本研究旨在研究波兰大白后备母猪背膘厚度(体内平均标准化测量值)对其繁殖性能和生产寿命的影响。该研究包括来自波兰160个种畜群的5122头PLW后备母猪,根据20,662窝的饲养结果对其繁殖性能进行了分析。试验日标准背膘平均厚度(P2+P4/2)不同,将后备母猪分为2组:ⅰ≤10 mm,ⅱ≤10 mm。ⅰ组比ⅱ组的母猪群寿命短3个月(P≤0.001),产仔数和产仔数较少(P≤0.001),但平均产仔活仔数高于ⅱ组(P≤0.001)。每100 d繁殖寿命活产仔猪数I组大于II组(P≤0.001)。在第1 - 8周期及之后的扑杀母猪时,第1 - 6周期I组比II组扑杀强度更大,母猪群中剩余母猪的比例更低。在I组与II组中,终身产仔量小于30头的母猪比例高出5.5个百分点,产仔量大于100头的母猪比例低1.9个百分点。我们的研究结果表明,在繁殖母猪体内确定的脂肪储备水平可以作为母猪繁殖潜力及其长寿倾向的初步信息。
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引用次数: 0
Small ruminant lentivirus-infected dairy goats’ metabolic blood profile in different stages of lactation 小反刍动物慢病毒感染奶山羊在泌乳期不同阶段的代谢血谱
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0009
Magdalena Zalewska, Justyna Jarczak, Michał Czopowicz, Marcin Mickiewicz, Jarosław Kaba, Emilia Bagnicka
Abstract The study aims to determine the differences in metabolic parameters in blood serum between asymptomatic animals with small ruminant lentivirus (SRLV) and uninfected goats. Pearson correlations were also estimated between biochemical parameters. The study included 26 goats which were divided into SRLV-infected and SRLV-free groups. Blood samples were taken at four points of lactation (days 14, 45, 85, and 240, reflecting perinatal period, early lactation, the peak of lactation, the end of lactation). Hepatic, kidney, bone, cardiac, pancreatic, lipid profiles and CRP concentrations were analyzed. Choline esterase (CHE), calcium (Ca*), creatine kinase (CK), and triglyceride (TRI) levels differed between groups, on day 240 (p≤0.05). Some parameters varied during lactation, with similar patterns observed in both groups. Mainly positive correlations between biochemical parameters were observed in the SRLV-free and SRLV-infected groups both within organ profiles and between them. CRP was not correlated with any biochemical parameters in the SRLV-free group but was negatively correlated with parameters of the liver, kidney, cardiac, and lipid profiles in the SRLV-infected group. The correlations suggest that SRLV may affect the kidneys, liver and heart, even in asymptomatic animals. Some differences were found between asymptomatic SRLV-infected and SRLV-free goats in the last stage of lactation; however, the nature of these changes requires further detailed studies.
摘要本研究旨在了解小反刍慢病毒(SRLV)无症状动物与未感染山羊血清代谢参数的差异。还估计了生化参数之间的Pearson相关性。该研究包括26只山羊,分为srlv感染组和srlv未感染组。分别于哺乳期第14、45、85、240天(围产期、泌乳早期、泌乳高峰、泌乳结束)4个哺乳期点采血。分析肝脏、肾脏、骨骼、心脏、胰腺、脂质谱和CRP浓度。第240天,各组间胆碱酯酶(CHE)、钙(Ca*)、肌酸激酶(CK)和甘油三酯(TRI)水平差异有统计学意义(p≤0.05)。哺乳期的一些参数变化,在两组中观察到相似的模式。SRLV-free组和srlv -感染组的生化指标在器官剖面内和器官剖面之间主要呈正相关。在无srlv组中,CRP与任何生化参数均无相关性,而在srlv感染组中,CRP与肝脏、肾脏、心脏和血脂参数呈负相关。相关性表明,即使在无症状的动物中,SRLV也可能影响肾脏、肝脏和心脏。无srlv感染的山羊与无srlv感染的山羊在泌乳后期存在差异;然而,这些变化的性质需要进一步的详细研究。
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引用次数: 0
Production of restructured beef jerky using blood plasma solutions activated by non-thermal atmospheric plasma 用非热大气等离子体活化血浆溶液生产重组牛肉干
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0008
Monika Marcinkowska-Lesiak, Magdalena Zalewska, Kazem Alirezalu, Iwona Wojtasik-Kalinowska, Anna Onopiuk, Andrzej Półtorak
Abstract The effect of blood plasma powder (2.5, 5, and 7.5% w/w in water) activated using non-thermal atmospheric plasma (T1, T2, and T3, respectively) was investigated as a nitrite source in the production of restructured beef jerky. A group without a nitrite source (NC) and a group cured with 100 ppm of sodium nitrite (PC) were used as negative control and positive control groups, respectively. The nitrite content of the plasma-activated solutions was adjusted to match that of the positive control by calculating the required plasma treatment time, based on previous studies. The obtained results showed that addition of treated solutions with nonthermal plasma for a 70 min, at a level of 20% in relation to the meat, can have beneficial effects on nitrosylhemochrome content, redness, and TBARS values of restructured jerky. These effects were statistically comparable (p≥0.05) to sodium nitrite-cured samples. Furthermore, compared to the PC group, the T1, T2, and T3 treatments exhibited significantly lower water activity and higher protein content (p<0.05). The T2 and T3 treatments also showed increased lightness and shear force values (p<0.05) compared to the control groups (NC and PC). It should be noted that the T3 group had the highest (p<0.05) residual nitrite content among all the samples. However, a sensory analysis is necessary to assess consumer acceptance with regard to differences in the odor profile of the treatments, according to the Principal Components Analysis (PCA).
摘要研究了非热常压等离子体(T1、T2和T3)活化的血浆粉(2.5、5和7.5% w/w)作为亚硝酸盐源在重组牛肉干生产中的作用。无亚硝酸盐源组(NC)和100ppm亚硝酸钠固化组(PC)分别作为阴性对照组和阳性对照组。根据以往的研究,通过计算所需的等离子体处理时间,调整等离子体活化溶液的亚硝酸盐含量,使其与阳性对照相匹配。结果表明,将处理过的非热等离子体溶液以20%的相对于肉干的水平添加70分钟,可以对重组肉干的亚硝基血红素含量、红度和TBARS值产生有益影响。这些效果与亚硝酸钠腌制的样品具有统计学上的可比性(p≥0.05)。此外,与PC组相比,T1、T2和T3处理的水分活性显著降低,蛋白质含量显著提高(p<0.05)。与对照组(NC和PC)相比,T2和T3处理的重量和剪切力值也有所增加(p<0.05)。值得注意的是,T3组的亚硝酸盐残留量最高(p<0.05)。然而,根据主成分分析(PCA),有必要进行感官分析,以评估消费者对不同处理方法的气味特征的接受程度。
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引用次数: 0
Dietary factors in nonalcoholic fatty liver disease: impacts on human and animal health - a review 非酒精性脂肪性肝病的饮食因素:对人类和动物健康的影响
4区 农林科学 Q2 Veterinary Pub Date : 2023-09-01 DOI: 10.2478/aspr-2023-0007
Andy Wai Kan Yeung, Natalia Ksepka, Maima Matin, Dongdong Wang, Eliana B. Souto, Jivko Stoyanov, Javier Echeverría, Devesh Tewari, Jarosław Olav Horbańczuk, Massimo Lucarini, Alessandra Durazzo, Joanna Marchewka, Vasil Pirgozliev, Ren-You Gan, Nikolay T. Tzvetkov, Kamil Wysocki, Farhan Bin Matin, Olena Litvinova, Anupam Bishayee, Hari Prasad Devkota, Amr El-Demerdash, Mladen Brnčić, Antonello Santini, Olaf. K. Horbańczuk, Michel-Edwar Mickael, Michał Ławiński, Niranjan Das, Bodrun Naher Siddiquea, Dalibor Hrg, Atanas G. Atanasov
Abstract Non-alcoholic fatty liver disease (NAFLD) is defined as a clinical syndrome characterized by excessive fat accumulation in liver, predominantly influenced by dietary choices. This study provides an extensive quantitative literature analysis on dietary influences on NAFLD. Bibliometric data were collected through the search string TOPIC = (“NAFLD*” OR “nonalcoholic fatty liver*” OR “non-alcoholic fatty liver*”) AND TOPIC = (“diet*” OR “nutrition*” OR “food*” OR “feed*”), which yielded 12,445 publications indexed within the Web of Science Core Collection. Utilizing VOSviewer software, term maps were generated to visually illustrate recurring phrases alongside citation data. The literature, which has seen exponential growth since the 2010s, predominantly consists of original articles, with a ratio of 4.7:1 compared to reviews. Notably, the significant contributors to this field were China and the United States. The majority of publications were found journals specialized in Gastroenterology & Hepatology, Nutrition & Dietetics, Biochemistry & Molecular Biology, Endocrinology & Metabolism, and Pharmacology & Pharmacy. Key dietary compounds/compounds classes such as resveratrol, polyphenols, curcumin, berberine, quercetin, flavonoids, omega-3 fatty acids, docosahexaenoic acid (DHA), genistein, and palmitic acid were frequently mentioned and cited. Many of them were demonstrated to have some potential benefits on NAFLD, both in human and animal studies.
非酒精性脂肪性肝病(NAFLD)是一种以肝脏脂肪堆积过多为特征的临床综合征,主要受饮食选择的影响。本研究对饮食对NAFLD的影响进行了广泛的定量文献分析。通过搜索字符串TOPIC =(“NAFLD*”或“非酒精性脂肪肝*”或“非酒精性脂肪肝*”)和TOPIC =(“diet*”或“nutrition*”或“food*”或“feed*”)收集文献计量学数据,在Web of Science Core Collection中索引了12,445篇出版物。利用VOSviewer软件,生成了术语图,以直观地说明重复出现的短语以及引用数据。自2010年代以来呈指数级增长的文献主要由原创文章组成,与评论的比例为4.7:1。值得注意的是,这一领域的重要贡献者是中国和美国。大多数出版物都是在胃肠病学专业期刊上发现的。肝病学、营养学;营养学,生物化学&;分子生物学、内分泌学;代谢与药理学药店关键的膳食化合物/化合物类别如白藜芦醇、多酚、姜黄素、小檗碱、槲皮素、类黄酮、omega-3脂肪酸、二十二碳六烯酸(DHA)、染料木素和棕榈酸被频繁提及和引用。在人类和动物研究中,它们中的许多都被证明对NAFLD有一些潜在的益处。
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引用次数: 0
The effect of dietary L-carnitine and fat on performance, carcass traits and blood components in broiler chickens 饲粮中添加左旋肉碱和脂肪对肉鸡生产性能、胴体性状和血液成分的影响
IF 1 4区 农林科学 Q2 Veterinary Pub Date : 2023-06-01 DOI: 10.2478/aspr-2023-0002
Hamid Akhoondzadeh, M. Bouyeh, E. Paz, A. Seidavi, R. Vlčková
Abstract The poultry industry has traditionally been selecting animals for improved performance without consideration for the effect on fat deposition. Dietary L-carnitine can alter lipid metabolism; nevertheless, when combined with fat, the effects are not clear. This study shows the effect of different dietary levels of L-carnitine (0, 200 and 400 mg/kg) and fat (0, 2.5 and 5%) on growth performance and slaughter traits of commercial broilers (Ross 308; n=270). The groups received the following dietary treatments: 1) 0 mg/kg L-carnitine + 0% fat, 2) 200 mg/kg L-carnitine + 0% fat, 3) 400 mg/kg L-carnitine + 0% fat, 4) 0 mg/kg L-carnitine + 2.5% fat, 5) 200 mg/kg L-carnitine + 2.5% fat, 6) 400 mg/kg L-carnitine + 2.5% fat, 7) 0 mg/kg L-carnitine + 5.0% fat, 8) 200 mg/kg L-carnitine + 5.0% fat, and 9) 400 mg/kg L-carnitine + 5.0% fat. Feed conversion ratio, growth performance, blood biochemical parameters, carcass traits and body composition were measured and analyzed. Levels of fat with L-carnitine had significant effects on the European Performance Efficiency Factor, wings weight, intestine length and weight, spleen and liver weight, full abdomen carcass and abdominal fat weight, as well as serum triglyceride levels. Dietary L-carnitine supplementation improved growth performance of broilers, thus it may be a promising solution to reduce fat storage in broilers and improve the quality of carcasses intended for human consumption.
传统上,家禽业选择动物是为了提高生产性能,而不考虑对脂肪沉积的影响。饲粮中左旋肉碱可改变脂质代谢;然而,当与脂肪结合使用时,效果并不明显。本试验旨在研究饲粮中不同水平左旋肉碱(0、200和400 mg/kg)和脂肪(0、2.5和5%)对商品肉鸡生长性能和屠宰性状的影响。n = 270)。各组的饲粮处理为:1)0 mg/kg左旋肉碱+ 0%脂肪,2)200 mg/kg左旋肉碱+ 0%脂肪,3)400 mg/kg左旋肉碱+ 0%脂肪,4)0 mg/kg左旋肉碱+ 2.5%脂肪,5)200 mg/kg左旋肉碱+ 2.5%脂肪,6)400 mg/kg左旋肉碱+ 2.5%脂肪,7)0 mg/kg左旋肉碱+ 5.0%脂肪,8)200 mg/kg左旋肉碱+ 5.0%脂肪,9)400 mg/kg左旋肉碱+ 5.0%脂肪。测定并分析了饲料系数、生长性能、血液生化指标、胴体性状和体成分。饲粮中添加左旋肉碱对欧洲生产效率系数、翅重、肠长和肠重、脾脏和肝脏重、全腹胴体和腹部脂肪重以及血清甘油三酯水平均有显著影响。饲粮中添加左旋肉碱可提高肉仔鸡的生长性能,因此它可能是减少肉仔鸡脂肪储存和提高供人食用的胴体质量的一个有希望的解决方案。
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引用次数: 0
Effects of pelvic suspension of beef carcasses and wet aging time of cuts on eating quality and sensory scores of 14 muscles 牛肉胴体盆腔悬浮液和切口湿老化时间对14块肌肉食性和感官评分的影响
IF 1 4区 农林科学 Q2 Veterinary Pub Date : 2023-06-01 DOI: 10.2478/aspr-2023-0005
G. Pogorzelski, E. Pogorzelska, A. Wierzbicka
Abstract To evaluate the effect of carcass hanging method and aging period on beef eating quality young cross-breed bulls were slaughtered in a slaughterhouse in south-eastern Poland. After the slaughter operations were completed, one carcass side was hung by the Achilles tendon and the other by the hip bone. Suspension methods depending on the carcass sides were used in rotation. Consumer samples were prepared from 14 muscles collected from each of the 50 sides. The use of different hanging methods showed their varied impact on tenderness, juiciness, flavour overall liking and eating quality of beef cuts. A positive effect of tenderstretch on eating quality was observed for six of the muscles (longissimus thoracis, spinalis dorsi, longissimus lumborum, vastus lateralis, gluteus profundus and semimembranosus), no effect was observed for seven, and a negative effect of suspending carcass by hip bone was noted for just one muscle.
摘要在波兰东南部的一家屠宰场,对不同挂尸方式和陈化时间对杂交幼公牛食用牛肉品质的影响进行了评价。屠宰操作完成后,尸体一侧用跟腱悬挂,另一侧用髋骨悬挂。在旋转中使用取决于胎体侧面的悬挂方法。消费者样品是从50个侧面各采集的14块肌肉中制备的。不同挂法的使用对牛肉块的嫩度、多汁性、整体风味和食用质量有不同的影响。在六块肌肉(胸最长肌、背棘肌、腰最长肌,股外侧肌、臀深肌和半膜肌)中观察到嫩背肌对饮食质量的积极影响,在七块肌肉中没有观察到任何影响,只有一块肌肉观察到用髋骨悬吊尸体的负面影响。
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引用次数: 0
Genomic evaluation of body weight traits in a F2 mixture of commercial broiler and native chicken 商品肉鸡与地方鸡F2杂交体质量性状的基因组评价
IF 1 4区 农林科学 Q2 Veterinary Pub Date : 2023-06-01 DOI: 10.2478/aspr-2023-0003
H. Asadollahi, S. A. Mahyari, R. Torshizi, H. Emrani, A. Ehsani
Abstract Genetic improvement of body weight (BW) traits has received major consideration in the poultry industry due to their economic and environmental implications. With the rapid implementation of genomic selection (GS) in the poultry industry and a decrease in the cost of genotyping, genomic prediction (GP) is a feasible way to increase productivity. Moreover, a pre-selection of SNPs could represent a reasonable option to speed up GP. We used 312 F2 broiler chicken genotyped with 60K Illumina Beadchip to investigate the effect of reduced SNP densities on accuracy and bias of prediction using single-step genomic BLUP (ssGBLUP) for BW at 2-4 weeks of age (488 chickens). To investigate the effect of reduced SNP densities by varying minor allele frequency (MAF), SNPs were grouped into five subgroups with MAF of 0.05-0.1, 0.1-0.2, 0.2-0.3, 0.3-0.4 and 0.4-0.5. The accuracy and bias of genomic predictions from different MAF bins were compared to that using a standard array of 60k SNP genotypes and the traditional BLUP method. Our study showed that using a subset of common SNPs genotypes may increase accuracy of genomic predictions compared to using all SNPs, specifically in the studied F2 population with a limited number of genotyped/phenotyped individuals.
摘要体重性状的遗传改良由于其经济和环境影响而受到家禽业的重视。随着基因组选择(GS)在家禽业的快速实施和基因分型成本的降低,基因组预测(GP)是提高家禽业生产力的可行途径。此外,snp的预先选择可能是加速GP的合理选择。以312只使用60K Illumina芯片进行基因分型的F2肉鸡(488只鸡)为研究对象,研究SNP密度降低对单步基因组BLUP (ssGBLUP)预测2-4周龄体重准确性和偏差的影响。为了研究小等位基因频率(minor allele frequency, MAF)对SNP密度降低的影响,将SNP分为5个亚组,MAF分别为0.05 ~ 0.1、0.1 ~ 0.2、0.2 ~ 0.3、0.3 ~ 0.4和0.4 ~ 0.5。比较了使用60k SNP基因型标准阵列和传统BLUP方法对不同MAF箱基因组预测的准确性和偏差。我们的研究表明,与使用所有snp相比,使用常见snp基因型的子集可以提高基因组预测的准确性,特别是在研究的F2群体中,基因型/表型个体数量有限。
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引用次数: 0
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Animal Science Papers and Reports
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