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Brunes LC, de Faria CU, Magnabosco CU, Lobo RB, Peripolli E, Aguilar I, Baldi F. Genomic prediction ability and genetic parameters for residual feed intake calculated using different approaches and their associations with growth, reproductive, and carcass traits in Nellore cattle. J Appl Genet 2023; 64:159-167. [PMID: 36376720 DOI: 10.1007/s13353-022-00734-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 09/03/2022] [Accepted: 10/26/2022] [Indexed: 11/16/2022]
Abstract
This study aimed to estimate prediction ability and genetic parameters for residual feed intake (RFI) calculated using a regression equation for each test (RFItest) and for the whole population (RFIpop) in Nellore beef cattle. It also aimed to evaluate the correlations between RFIpop and RFItest with growth, reproductive, and carcass traits. Genotypic and phenotypic records from 8354 animals were used. An analysis of variance (ANOVA) was performed to verify the adequacy of the regression equations applied to estimate the RFItest and RFIpop. The (co)variance components were obtained using the single-step genomic best linear unbiased prediction under single and two-trait animal model analyses. The genetic and phenotypic correlations between RFItest and RFIpop with dry matter intake, frame, growth, reproduction, and carcass-related traits were evaluated. The prediction ability and bias were estimated to compare the RFItest and RFIpop genomic breeding values (GEBV). The RFIpop ANOVA showed a higher significance level (p < 0.0001) than did the RFItest for the fixed effects. The RFIpop displayed higher additive genetic variance estimated than the RFItest, although the RFIpop and RFItest displayed similar heritabilities. Overall, the RFItest showed higher residual correlations with growth, reproductive, and carcass traits, while the RFIpop displayed higher genetic correlations with such traits. The GEBV for the RFItest was slightly biased than GEBV RFIpop. The approach to calculate the RFI influenced the decomposition and estimation of variance components and genomic prediction for RFI. The application of RFIpop would be more appropriate for genetic evaluation purpose to adjust or correct for non-genetic effects and to decrease the prediction bias for RFI.
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Affiliation(s)
| | | | | | | | - Elisa Peripolli
- Departament of Animal Science, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, 14884-900, Brazil
| | - Ignacio Aguilar
- Instituto Nacional de Investigación Agropecuaria (INIA), 11500, Montevideo, Uruguay
| | - Fernando Baldi
- Departament of Animal Science, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, 14884-900, Brazil
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Mehrban H, Naserkheil M, Lee DH, Ibáñez-Escriche N. Genetic parameters and correlations of related feed efficiency, growth, and carcass traits in Hanwoo beef cattle. Anim Biosci 2020; 34:824-832. [PMID: 32898962 PMCID: PMC8100466 DOI: 10.5713/ajas.20.0135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/14/2020] [Indexed: 11/27/2022] Open
Abstract
Objective This study aimed to estimate the genetic parameters and genetic correlations for related feed efficiency, growth, and carcass traits in Hanwoo cattle. Methods Phenotypic data from 15,279 animals born between 1989 and 2015 were considered. The related feed efficiency traits considered were Kleiber ratio (KR) and relative growth rate (RGR). Carcass traits analyzed were backfat thickness (BT), carcass weight, eye muscle area, and marbling score. Growth traits were assessed by the average daily gain (ADG), metabolic body weight (MBW) at mid-test age from 6 to 24 months, and yearling weight (YW). Variance and covariance components were estimated using restricted maximum likelihood using nine multi-trait animal models. Results The heritability estimates for related feed efficiency (0.28±0.04 for KR and RGR) and growth traits (0.26±0.02 to 0.33±0.04) were moderate, but the carcass traits tended to be higher (0.38±0.04 to 0.61±0.06). The related feed efficiency traits were positively genetically correlated with all the carcass traits (0.37±0.09 to 0.47±0.07 for KR, and 0.14±0.09 to 0.37±0.09 for RGR), except for BT, which showed null to weak correlation. Conversely, the genetic correlations of RGR with MBW (−0.36±0.08) and YW (−0.30±0.08) were negative, and those of KR with MBW and YW were close to zero, whereas the genetic correlations of ADG with RGR (0.40±0.08) and KR (0.70±0.05) were positive and relatively moderate to high. The genetic (0.92±0.02) correlations between KR and RGR were very high. Conclusion Sufficient genetic variability and heritability were observed for traits of interest. Moreover, the inclusion of KR and/or RGR in Hanwoo cattle breeding programs could improve the feed efficiency without producing any unfavorable effects on the carcass traits.
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Affiliation(s)
- Hossein Mehrban
- Animal Science, Shahrekord University, Shahrekord, Charmahalo-Bakhteiari 88186-34141, Iran
| | | | - Deuk Hwan Lee
- Animal Life and Environment Sciences, Hankyong National University, Anseong 17579, Korea
| | - Noelia Ibáñez-Escriche
- Institute for Animal Science and Technology, Universitat Politècnica de València, València 46022, Spain
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Cohen-Zinder M, Lipkin E, Shor-Shimoni E, Ben-Meir Y, Agmon R, Asher A, Miron J, Shabtay A. FABP4 gene has a very large effect on feed efficiency in lactating Israeli Holstein cows. Physiol Genomics 2019; 51:481-487. [PMID: 31373885 DOI: 10.1152/physiolgenomics.00051.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Improving feed efficiency (FE) is a major goal for the livestock industry. Previously, we have identified 48 SNP markers distributed over 32 genes significantly associated with residual feed intake (RFI) in Israeli Holstein male calves, the most significant of which are located in the bovine FABP4 gene. In the present study, we tested associations of eight of the FABP4 markers with RFI and feed conversion ratio (FCR), along with milk composition and feeding behavioral traits, in 114 lactating Israeli Holstein cows. Large allele effects were found, along with large contributions of FABP4 markers to the phenotypic variation [mean contribution of all significant markers (P < 0.05), 15.4 and 12.0% for RFI and FCR, respectively] and genotypic variation [means of all significant markers (P < 0.05), 75.7 and 32.4% in RFI and FCR, respectively]. However, the association of all significant FABP4 markers with FE and milk content traits was found in opposite directions, such that improved FE was accompanied by decreased milk content. Hence, before inclusion in breeding programs, the gain in FE must be economically balanced with the loss in milk contents. On the other hand, these findings imply that in any current improvement program concentrated on milk traits alone, without taking into account the effect on FE, the progress in milk composition is probably accompanied by deterioration of FE. These results, if confirmed in other populations and breeds, set FABP4 as a prime candidate in any marker-assisted selection program targeting FE as a whole and RFI in particular.
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Affiliation(s)
- Miri Cohen-Zinder
- Beef Cattle Section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, 30095, Israel
| | - Ehud Lipkin
- Department of Genetics, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Einav Shor-Shimoni
- Beef Cattle Section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, 30095, Israel
| | - Yehoshav Ben-Meir
- Department of Ruminant Sciences, Agricultural Research Organization, Bet Dagan, Israel
| | - Rotem Agmon
- Beef Cattle Section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, 30095, Israel
| | - Aviv Asher
- Northern R&D, MIGAL, Galilee Technology Center, Kiryat Shmona, Israel
| | - Joshua Miron
- Department of Ruminant Sciences, Agricultural Research Organization, Bet Dagan, Israel
| | - Ariel Shabtay
- Beef Cattle Section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, 30095, Israel
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Takeda M, Uemoto Y, Inoue K, Ogino A, Nozaki T, Kurogi K, Yasumori T, Satoh M. Evaluation of feed efficiency traits for genetic improvement in Japanese Black cattle. J Anim Sci 2018; 96:797-805. [PMID: 29584931 DOI: 10.1093/jas/skx054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 03/20/2018] [Indexed: 11/14/2022] Open
Abstract
We evaluated the genetic relationships (1) among feed efficiency traits with different fattening periods, (2) between feed efficiency traits and growth traits, and (3) between feed efficiency traits and carcass traits, to determine the influence of genetic factors on feed efficiency traits. In total, 4,578 Japanese Black cattle from a progeny testing program were used. Residual feed intake (RFI), residual BW gain (RG), and residual intake and BW gain (RIG) were defined as feed efficiency traits, and were measured for the first half (approximately 9 to 15 months of age), latter half (approximately 15 to 21 months of age), and total period of fattening (approximately 9 to 21 months of age). A single-trait animal model for estimating heritability and a two-trait animal model for estimating genetic and phenotypic correlations were used. The heritability estimates for RFI, RG, and RIG were different in each fattening period, ranging from 0.36 to 0.46, 0.19 to 0.28, and 0.28 to 0.34, respectively, and the heritability estimates for the total fattening period were greater than those for the first and latter halves separately. RIG showed the greatest preferred genetic correlation, with a greater feed conversion ratio than the other feed efficiency traits (ranging from -0.84 to -0.96). RG in the first and latter halves of the fattening period had different genetic correlations with the growth starting point (0.82 and -0.06, respectively) and maturity rate (0.49 and -0.51, respectively) of the Gompertz growth curve parameters, and is strongly dependent on the different fattening periods. Feed efficiency traits in different fattening periods had low genetic correlations with the carcass traits (from -0.05 to 0.19 for RFI; from 0.02 to 0.31 for RG; and from -0.11 to 0.20 for RIG). This study indicated the possibility for genetic improvement through the selection of high-RIG animals to decrease feed intake and increase BW gain without any unfavorable correlated responses affecting mature (asymptotic) weight and carcass grade.
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Affiliation(s)
- Masayuki Takeda
- National Livestock Breeding Center, Nishigo, Fukushima, Japan.,Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Yoshinobu Uemoto
- Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
| | - Keiichi Inoue
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
| | - Atsushi Ogino
- Maebashi Institute of Animal Science, Livestock Improvement Association of Japan, Inc., Maebashi, Gunma, Japan
| | - Takayoshi Nozaki
- Maebashi Institute of Animal Science, Livestock Improvement Association of Japan, Inc., Maebashi, Gunma, Japan
| | - Kazuhito Kurogi
- Maebashi Institute of Animal Science, Livestock Improvement Association of Japan, Inc., Maebashi, Gunma, Japan
| | - Takanori Yasumori
- Cattle Breeding Department, Livestock Improvement Association of Japan, Inc., Tokyo, Japan
| | - Masahiro Satoh
- Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, Japan
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de Almeida Santana MH, Junior GAO, Cesar ASM, Freua MC, da Costa Gomes R, da Luz E Silva S, Leme PR, Fukumasu H, Carvalho ME, Ventura RV, Coutinho LL, Kadarmideen HN, Ferraz JBS. Copy number variations and genome-wide associations reveal putative genes and metabolic pathways involved with the feed conversion ratio in beef cattle. J Appl Genet 2016; 57:495-504. [PMID: 27001052 DOI: 10.1007/s13353-016-0344-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/20/2016] [Accepted: 03/02/2016] [Indexed: 10/22/2022]
Abstract
The use of genome-wide association results combined with other genomic approaches may uncover genes and metabolic pathways related to complex traits. In this study, the phenotypic and genotypic data of 1475 Nellore (Bos indicus) cattle and 941,033 single nucleotide polymorphisms (SNPs) were used for genome-wide association study (GWAS) and copy number variations (CNVs) analysis in order to identify candidate genes and putative pathways involved with the feed conversion ratio (FCR). The GWAS was based on the Bayes B approach analyzing genomic windows with multiple regression models to estimate the proportion of genetic variance explained by each window. The CNVs were detected with PennCNV software using the log R ratio and B allele frequency data. CNV regions (CNVRs) were identified with CNVRuler and a linear regression was used to associate CNVRs and the FCR. Functional annotation of associated genomic regions was performed with the Database for Annotation, Visualization and Integrated Discovery (DAVID) and the metabolic pathways were obtained from the Kyoto Encyclopedia of Genes and Genomes (KEGG). We showed five genomic windows distributed over chromosomes 4, 6, 7, 8, and 24 that explain 12 % of the total genetic variance for FCR, and detected 12 CNVRs (chromosomes 1, 5, 7, 10, and 12) significantly associated [false discovery rate (FDR) < 0.05] with the FCR. Significant genomic regions (GWAS and CNV) harbor candidate genes involved in pathways related to energetic, lipid, and protein metabolism. The metabolic pathways found in this study are related to processes directly connected to feed efficiency in beef cattle. It was observed that, even though different genomic regions and genes were found between the two approaches (GWAS and CNV), the metabolic processes covered were related to each other. Therefore, a combination of the approaches complement each other and lead to a better understanding of the FCR.
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Affiliation(s)
- Miguel Henrique de Almeida Santana
- Faculty of Health and Medical Sciences, University of Copenhagen, Grønnegårdsvej 7, 1870, Frederiksberg, Denmark.,Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
| | | | | | - Mateus Castelani Freua
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
| | - Rodrigo da Costa Gomes
- Empresa Brasileira de Pesquisa Agropecuária, CNPGC/EMBRAPA, BR 262 km 4, 79002-970, Campo Grande, Brazil
| | - Saulo da Luz E Silva
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
| | - Paulo Roberto Leme
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
| | - Heidge Fukumasu
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
| | - Minos Esperândio Carvalho
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
| | - Ricardo Vieira Ventura
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil.,University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Luiz Lehmann Coutinho
- Escola Superior de Agricultura Luiz de Queiroz, University of São Paulo, 13418-900, Piracicaba, Brazil
| | - Haja N Kadarmideen
- Faculty of Health and Medical Sciences, University of Copenhagen, Grønnegårdsvej 7, 1870, Frederiksberg, Denmark
| | - José Bento Sterman Ferraz
- Faculdade de Zootecnia e Engenharia de Alimentos, University of São Paulo, Duque de Caxias Norte, 225, 13635-900, Pirassununga, Brazil
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Santana M, Oliveira G, Gomes R, Silva S, Leme P, Stella T, Mattos E, Rossi P, Baldi F, Eler J, Ferraz J. Genetic parameter estimates for feed efficiency and dry matter intake and their association with growth and carcass traits in Nellore cattle. Livest Sci 2014. [DOI: 10.1016/j.livsci.2014.06.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Diaz IDPS, Crews DH, Enns RM. Cluster and meta-analyses of genetic parameters for feed intake traits in growing beef cattle. J Anim Breed Genet 2013; 131:217-26. [PMID: 24267979 DOI: 10.1111/jbg.12063] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 10/09/2013] [Indexed: 12/01/2022]
Abstract
A data set based on 50 studies including feed intake and utilization traits was used to perform a meta-analysis to obtain pooled estimates using the variance between studies of genetic parameters for average daily gain (ADG); residual feed intake (RFI); metabolic body weight (MBW); feed conversion ratio (FCR); and daily dry matter intake (DMI) in beef cattle. The total data set included 128 heritability and 122 genetic correlation estimates published in the literature from 1961 to 2012. The meta-analysis was performed using a random effects model where the restricted maximum likelihood estimator was used to evaluate variances among clusters. Also, a meta-analysis using the method of cluster analysis was used to group the heritability estimates. Two clusters were obtained for each trait by different variables. It was observed, for all traits, that the heterogeneity of variance was significant between clusters and studies for genetic correlation estimates. The pooled estimates, adding the variance between clusters, for direct heritability estimates for ADG, DMI, RFI, MBW and FCR were 0.32 ± 0.04, 0.39 ± 0.03, 0.31 ± 0.02, 0.31 ± 0.03 and 0.26 ± 0.03, respectively. Pooled genetic correlation estimates ranged from -0.15 to 0.67 among ADG, DMI, RFI, MBW and FCR. These pooled estimates of genetic parameters could be used to solve genetic prediction equations in populations where data is insufficient for variance component estimation. Cluster analysis is recommended as a statistical procedure to combine results from different studies to account for heterogeneity.
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Affiliation(s)
- I D P S Diaz
- Department of Animal Sciences, State University of Sao Paulo, Sao Paulo, Brazil; Department of Animal Sciences, Colorado State University, Fort Collins, CO, USA
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Residual feed intake: a nutritional tool for genetic improvement. Trop Anim Health Prod 2013; 45:1649-61. [DOI: 10.1007/s11250-013-0435-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2013] [Indexed: 10/26/2022]
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Berry DP, Crowley JJ. CELL BIOLOGY SYMPOSIUM: Genetics of feed efficiency in dairy and beef cattle1. J Anim Sci 2013; 91:1594-613. [DOI: 10.2527/jas.2012-5862] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D. P. Berry
- Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
| | - J. J. Crowley
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
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Genetic parameters for fatty acid composition and feed efficiency traits in Japanese Black cattle. Animal 2012; 5:987-94. [PMID: 22440094 DOI: 10.1017/s1751731111000012] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
We estimated the genetic parameters related to feed intake (FI), feed efficiency traits (including feed conversion ratio (FCR) and residual feed intake (RFI) of digestible crude protein (DCP) and total digestible nutrients (TDN)), beef marbling score (BMS), melting point of fat (MP) and fatty acid composition. Fat and meat (Musculus trapezius) samples were taken from the carcasses of 863 Japanese Black steers derived from 65 sires, for determination of the MP and fatty acid composition of the total lipid in intramuscular adipose tissue. Genetic parameters were estimated using uni- and bivariate animal models. In addition, pedigree information for 4841 animals was used. Heritability estimates for BMS, MP, individual fatty acids, monounsaturated fatty acids (MUFA), the ratio of saturated fatty acids to MUFA (MUS) and the ratio of elongation (ELONG) were generally high. The FI values of TDN and DCP were also high, but FCRs and RFIs of those were low (0.09 to 0.22). Genetic correlation of BMS with MP was -0.34 (favorable) and with C18:1, MUFA, MUS and ELONG values were 0.40, 0.28, 0.29 and 0.37, respectively (favorable). Genetic correlations of MP with C18:1, MUFA, MUS and ELONG were negative (also favorable) and high (-0.85, -0.98, -1.00 (-0.996) and -0.66, respectively). The correlation estimates for feed efficiency traits of DCP were quite similar to those of TDN. Genetic correlations of BMS with FCRs and RFIs of TDN and DCP were all positive (unfavorable; 0.21 to 0.51), and in particular, the correlations with RFIs of those were high. The correlations of C18:1, MUFA, MUS and ELONG with RFIs of TDN and DCP were positive (unfavorable) but low (0.06 to 0.17), whereas the corresponding correlations with FCRs of those were all negative (favorable; -0.38 to -0.10). These results suggest that the quantity and quality of beef fat can be simultaneously improved and that the quality of beef fat (fatty acid composition) can be improved directly or indirectly with MP. Furthermore, selecting MP or fatty acid traits does not significantly affect feed efficiency.
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Abstract
The genetic evaluation of economically important traits utilizes estimates of genetic variability, which are represented by heritability. This review summarizes the published heritabilities of traits estimated in Wagyu cattle. Two different mean heritabilities, unweighted and weighted by standard errors, were calculated. In Japanese Black cattle, the average unweighted and weighted direct heritabilities of birth weight were 0.35 and 0.28, respectively, whereas the respective maternal heritabilities were 0.17 and 0.07. The mean unweighted heritability of calf market weight was estimated to be 0.30 in Japanese Black cattle. The mean unweighted heritability of daily gain during performance testing was 0.29 in Japanese Black and 0.40 in Japanese Shorthorn cattle. In Japanese Black cattle, the unweighted mean heritability was 0.48 for carcass weight, 0.46 for rib-eye area, 0.38 for rib thickness, 0.39 for subcutaneous fat thickness, and 0.55 for marbling. The mean weighted heritability of the calving interval was low, and estimated to be 0.05. In general, the heritabilities estimated in Wagyu cattle were similar to those estimated in other beef breeds.
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Affiliation(s)
- Kenji Oyama
- Food Resources Education and Research Center, Graduate School of Agricultural Science, Kobe University, Kasai, Hyogo, Japan.
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Crowley JJ, Evans RD, Mc Hugh N, Pabiou T, Kenny DA, McGee M, Crews DH, Berry DP. Genetic associations between feed efficiency measured in a performance test station and performance of growing cattle in commercial beef herds. J Anim Sci 2011; 89:3382-93. [DOI: 10.2527/jas.2011-3836] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lee JM, Choe JH, Oh MH, Kim YS, Cheon DW, Seo SC, Hwang KS, Jang AR. Effect of Sex on Quality Grade Factors, Physicochemical and Sensory Traits of Longissimus Dorsi in Hanwoo. Korean J Food Sci Anim Resour 2010. [DOI: 10.5851/kosfa.2010.30.2.321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Mirzaei HR, Verbyla AP, Deland MPB, Pitchford WS. Describing variation in carcass quality traits of crossbred cattle. Pak J Biol Sci 2009; 12:222-230. [PMID: 19579950 DOI: 10.3923/pjbs.2009.222.230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In order to investigate variation in carcass quality traits, during a four-year period, mature Hereford cows (637) were mated to 97 sires from seven breeds (Jersey, Wagyu, Angus, Hereford, South Devon, Limousin and Belgian Blue), resulting in 1144 calves. Carcass production traits (carcass weight = HCWt, fat depth = P8, eye muscle area = EMA, intramuscular fat = IMF) were obtained from these cattle that constitute the Australia's Southern Crossbreeding Project. Data were analysed using multi-variate sire model containing fixed effects of sex, sire breed, slaughter age nested within sexes. Random effects were sire, dam, management (location-year-post-weaning groups) and environmental effects. HCWt of South Devon, Belgian Blue, Limousin and unexpectedly, Angus were the heaviest on the average. Hereford calves were intermediate and Jersey and Wagyu were lighter on the average than others. Carcasses of the Belgian Blue and Limousin had low P8 and IMF, carcasses of Hereford and South Devon were intermediate and Angus, Jersey and Wagyu had high P8 and IMF. Management group effects were greatest especially for EMA and IMF. The sire variation was about 6, 6, 4 and 2% of total variation for HCWt, P8, EMA and IMF. Heritability ranged from 0.20 to 0.37 (carcass weight). The genetic correlation between the two fat depots was not as high (0.18) as expected. Results from this study suggest that strategies to increase genetic potential for HCWt would increase the genetic potential for EMA but may reduce marbling and tend to slightly increase P8. All phenotypic correlations were positive, although not large.
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Affiliation(s)
- H R Mirzaei
- Department of Animal Science, University of Zabol, Iran
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