scholarly journals Investigation of SNPs in theATP1A2, CA3andDECR1genes mapped to porcine chromosome 4: analysis in groups of pigs divergent for meat production and quality traits

2006 ◽  
Vol 5 (3) ◽  
pp. 249-263 ◽  
Author(s):  
Roberta Davoli ◽  
Luca Fontanesi ◽  
Silvia Braglia ◽  
Irma Nisi ◽  
Emilio Scotti ◽  
...  
Keyword(s):  
Meat Production ◽  
Quality Traits ◽  
Chromosome 4 ◽  
Porcine Chromosome

scholarly journals 154 A genetic marker for PRRS resistance has no adverse effect on economically important traits in pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 145-145
Author(s):  
Chunyan Zhang ◽  
Dinesh Thekkoot ◽  
Bob Kemp ◽  
Jack Dekkers ◽  
Graham Plastow
Keyword(s):  
Adverse Effect ◽  
Genetic Marker ◽  
Host Response ◽  
Viral Disease ◽  
Quality Traits ◽  
Chromosome 4 ◽  
Lactation Length ◽  
Litter Traits ◽  
Sow Reproduction ◽  
Porcine Respiratory

Abstract Porcine Respiratory and Reproductive Syndrome (PRRS) is a very costly viral disease of pigs. A genetic marker for host response to PRRS on chromosome 4 (rs80800372, (WUR)) could be used to select for resilience to PPRS. However, before including WUR in selection, it is necessary to know effects of WUR on economically important traits without PRRS. A dataset with both genotypes and phenotypes on purebred Duroc (D), Landrace (L), Yorkshire (Y) and crossbred (LY or DLY) pigs was used. A total of 20 traits were tested. Sow reproduction and litter traits were available on > 13,000 D, L and Y and 1,549 LY sows. Growth and ultrasound traits were recorded on >35,000 D, L and Y and 2,622 DLY pigs. Daily feed intake (70-120kg) was from 4,133 Durocs. Carcass and meat quality traits were from 2,184 Durocs, 1,160 Yorkshires and 2,184 DLY pigs. All animals were genotyped using a custom SNP chip ( > 55K) including WUR. Analyses were done within each breed using an animal model. WUR was fitted as a fixed effect by classifying pigs with one or two favourable alleles (B) into one group and others into a second group. Contemporary group, parity, litter, lactation length and net fostering effects were considered depending on the traits. Relationship matrices were constructed using pedigree in purebreds and genotypes in crossbreds. WUR had no significant ( P >0.05 ) effect on any trait, except for number of pigs alive at 24hrs in Y and ultrasound loin depth in D and Y ( P< 0.05 ) but the favorable WUR allele also had favorable effects on these two traits. These results were similar to the report by Dunkelberger et al. (J. Anim. Sci. 2017, 95: 2838). In conclusion, WUR had no adverse effects on any trait and can be used to select pigs with increased resilience to PRRS.

Castration age and growth, meat production and meat quality of Nellore male cattle

2020 ◽  
Vol 60 (5) ◽  
pp. 725
Author(s):  
R. J. Anaruma ◽  
L. G. Reis ◽  
P. E. de Felício ◽  
S. B. Pflanzer ◽  
S. Rossi ◽  
...  
Keyword(s):  
Meat Quality ◽  
Average Daily Gain ◽  
Carcass Weight ◽  
Age And Growth ◽  
Meat Production ◽  
Quality Traits ◽  
Muscle Area ◽  
Sensory Property ◽  
Meat Quality Traits

Castration in beef cattle production has been proposed to reduce sexual and aggressive behaviour, increase carcass fat deposition, and improve meat quality traits, such as tenderness and juiciness. The aim of the present study was to evaluate the effects of the age of castration on performance, subprimal yield and meat quality of Nellore cattle raised on a pasture system. A total of 24 Nellore males were raised in a grass-fed system with Brachiaria brizantha since birth until slaughter (at 30 months old). Three treatments were assigned: castration at weaning (CW); castration at 20 months old (C20); and intact bulls (NoC). Males were weighed, and muscle and fat thickness were periodically evaluated by ultrasonography. The cold carcass weight, dressing and carcass pH (pH 24), and subprimal cut weights were recorded after 24 h of chilling. Samples of Longissimus lumborum (LL) were taken to measure meat quality traits. Animals that were castrated at weaning had lower bodyweight after 10 months of age with no changes in the supplement intakes, average daily gain, hot carcass weight and cold carcass weight compared with NoC. Intact males had greater cooking losses and carcass yield compared with others, with no differences for LL pH 24 according to the treatments. The castration did not change the LL muscle area, but decreased total forequarter, chunk, shoulder and eye of round weights, and increased the back fat over LL and rump fat. Animals castrated at weaning had higher marbling compared with others. In addition, regardless of age, castration improved tenderness, increased LL total lipids and decreased moisture compared with NoC. For sensory property, steers castrated at 20 months of age had lower juiciness, and NoC had a greater global sensory property compared with steers castrated at 20 months old. In conclusion, steers castrated at weaning had lower growth rate, final bodyweight and meat production compared with intact males. However, when castration was performed at 20 months, animals did not differ in most cases from castration at weaning and NoC. Tenderness was improved by castration, but sensory traits did not differ between groups.

On growth, fatness, and form: A further look at porcine Chromosome 4 in an Iberian × Landrace cross

2005 ◽  
Vol 16 (5) ◽  
pp. 374-382 ◽  
Author(s):  
Anna Mercadé ◽  
Jordi Estellé ◽  
José L. Noguera ◽  
Josep M. Folch ◽  
Luis Varona ◽  
...  
Keyword(s):  
Chromosome 4 ◽  
Porcine Chromosome

Effects of variation in porcine MYOD1 gene on muscle fiber characteristics, lean meat production, and meat quality traits

Meat Science ◽  
2012 ◽  
Vol 92 (1) ◽  
pp. 36-43 ◽  
Author(s):  
E.A. Lee ◽  
J.M. Kim ◽  
K.S. Lim ◽  
Y.C. Ryu ◽  
W.M. Jeon ◽  
...  
Keyword(s):  
Meat Quality ◽  
Muscle Fiber ◽  
Meat Production ◽  
Quality Traits ◽  
Lean Meat ◽  
Meat Quality Traits

Approaches to interval mapping of QTL in a multigeneration pedigree: the example of porcine chromosome 4

2002 ◽  
Vol 33 (1) ◽  
pp. 26-32 ◽  
Author(s):  
S. A. Knott ◽  
P. E. Nyström ◽  
L. Andersson-Eklund ◽  
S. Stern ◽  
L. Marklund ◽  
...  
Keyword(s):  
Interval Mapping ◽  
Chromosome 4 ◽  
Porcine Chromosome

scholarly journals Genetic and Nutritional Factors Determining the Production and Quality of Sheep Meat – A Review

2017 ◽  
Vol 17 (1) ◽  
pp. 23-40 ◽  
Author(s):  
Jan Knapik ◽  
Katarzyna Ropka-Molik ◽  
Marek Pieszka
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Saturated Fatty Acids ◽  
Meat Production ◽  
Quality Traits ◽  
Omega 3 ◽  
Nutritional Factors ◽  
Expression Of Genes

Abstract In the last 20 years, the importance of sheep and especially lamb meat as the main product of the sheep industry in European conditions increased noticeably. In the same period, people’s interest in food quality grew. This contributed to a significant intensification of research to improve the meat production and quality traits in sheep. The aim of the research performed mainly focuses on the effects of nutrition, the environmental and genetic factors on the value of fattening, slaughter and meat quality characteristics. Much of the research concentrates on determining the fatty acid profile of intramuscular fat, which is important for sensory traits and dietetic value of lamb. Modulation of healthy qualities of lamb is aimed, inter alia, to modify the fatty acid profile, in particular to maintain the proper ratio of polyunsaturated (PUFA ) to saturated fatty acids (SFA). It is also desirable to increase the content of omega-3 fatty acids and conjugated linoleic acid (CLA). Furthermore, it has been proven that changes in the expression of genes involved in lipid metabolism are associated with the change in lipid profile in skeletal muscle. The aim of this review was to summarize the information currently available about the influence of genetic and nutritional factors on meat production and quality traits in different sheep breeds.

scholarly journals The effect of CAPN1 and CAST gene variations on meat quality traits in Finnish Aberdeen Angus and Nordic Red Cattle populations

2018 ◽  
Vol 27 (4) ◽  
Author(s):  
Terhi Iso-Touru ◽  
Maiju Pesonen ◽  
Daniel Fischer ◽  
Arto Huuskonen ◽  
Anu Sironen
Keyword(s):  
Meat Quality ◽  
Meat Production ◽  
Quality Traits ◽  
Meat Tenderness ◽  
Marbling Score ◽  
Dual Purpose ◽  
Beef Breed ◽  
Meat Quality Traits ◽  
Dual Purpose Cattle ◽  
Dairy Breed

High meat quality and specifically meat tenderness are desired traits by the consumers, however the environmental impact of meat production is becoming a relevant factor in the industry. Therefore, breeding of dual purpose cattle breeds may answer the high demand of meat production in the future. In this study we identified statistical differences between genotypes of CAST and CAPN1 gene variants with meat quality traits in a dairy breed (Nordic Red Cattle) and compared the results with beef breed (Aberdeen Angus). Our results show that the favorable alleles have not been selected in the studied dairy breed and thus could be used as a tool for improvement of meat quality. The genes were associated with specific meat quality traits (i.e. sensory juiciness, marbling score and meat color) also in the dairy breed. This supports the utility of known meat quality associated genetic variants to improve meat quality in dairy breeds.

scholarly journals Estimates of genetic parameters and cluster analyses for carcass and meat quality traits in birds

2017 ◽  
Vol 52 (3) ◽  
pp. 205-213 ◽  
Author(s):  
Adriane Molardi Bainy ◽  
Rodrigo Pelicioni Savegnago ◽  
Luara Afonso de Freitas ◽  
Beatriz do Nascimento Nunes ◽  
Jaqueline Oliveira Rosa ◽  
...  
Keyword(s):  
Meat Quality ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Meat Production ◽  
Quality Traits ◽  
Production Traits ◽  
Multiple Trait ◽  
Breeding Values ◽  
Cluster Analyses ◽  
Meat Quality Traits

Abstract: The objective of this work was to estimate genetic parameters for bird carcass and meat quality traits, as well as to explore the genetic patterns of the breeding values of this population using cluster analyses. Data from 1,846 birds were used to estimate the genetic parameters of production and quality traits using the multiple-trait animal model, and cluster analyses were performed. The heritability estimates ranged from 0.08± 0.03 for meat pH measured 24 hours after slaughter to 0.85± 0.09 for body weight. The genetic correlations between production traits were high and positive. The genetic correlations between meat quality traits were low and were not informative due to the high standard errors (same magnitudes as those of the genetic correlations). The genetic correlations between meat production and quality traits were negative, except between production traits and meat lightness intensity. Based on breeding values (EBVs), the evaluated population can be divided into four groups through cluster analyses, and one group is suitable for selection because the birds presented EBVs above and around the average of the population, respectively, for production and quality traits. Therefore, it is possible to obtain genetic gains for production-related traits without decreasing meat quality.

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