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  • 1
    Online Resource
    Online Resource
    Table_1.DOCX
    Frontiers Media SA ; 2020
    In:  Frontiers in Genetics Vol. 11 ( 2020-7-3)
    Details
    In: Frontiers in Genetics, Frontiers Media SA, Vol. 11 ( 2020-7-3)
    Type of Medium: Online Resource
    ISSN: 1664-8021
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.3389/fgene.2020.00717
    DOI: 10.3389/fgene.2020.00717.s001
    DOI: 10.3389/fgene.2020.00717.s002
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2020
    detail.hit.zdb_id: 2606823-0
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  • 2
    Online Resource
    Online Resource
    PSVII-12 Using a Multi-Carbohydrolase (Rovabio®Advance) in Grow-Finish Pigs: How Does Not Removing Pigs Affect Growth Performance?
    Oxford University Press (OUP) ; 2022
    In:  Journal of Animal Science Vol. 100, No. Supplement_2 ( 2022-04-12), p. 175-176
    Details
    In: Journal of Animal Science, Oxford University Press (OUP), Vol. 100, No. Supplement_2 ( 2022-04-12), p. 175-176
    Abstract: Fiber degrading enzymes that contain single or multiple carbohydrolases are commonly used in the US commercial swine industry to reduce pig mortality. The objective of this study was to examine how pig removal from experimental treatments affects growth performance, with or without Rovabio®Advance P10% (RA). The animals on test consisted of 1,260 DNA barrows that were fed from 5.9 to 133 kg. The 4 dietary treatments were: Positive Control (PC), Low Nutrient Density Control (LNDC), PC plus RA (PC+), and LNDC plus RA (LNDC+). The SID AA and NE of the ingredients used were determined using the ingredient profile of the PC formulations and the nutritional modeling calculator for RA. The PC and LNDC+ diets were formulated to have similar NE and SID AA content. In the PC+ diets, RA was added on-top, without reformulation. At the start of the trial, 21 weanling pigs were allotted per pen, with a space allowance of 0.67 m2/pig. For the entire growout, feeding RA reduced the percentage of pigs removed from test (PC 8.3%, LNDC 7.9%, vs PC+ 5.4% and LNDC+ 4.4%; P & lt; 0.03). By day 150, the number of pigs per pen did not differ per treatment (P & gt;0.4) (PC 18.85, LNDC 19.12, PC+ 19.85 and LNDC+ 19.72); however, the respective pig space (m2/pig) was 0.74, 0.73, 0.71 and 0.71. Using the number of pigs/pen as a covariate for ADG, 0-41 d ADG was not significant (P & gt;0.59); however, there was a tendency towards significantly less ADG for pigs on RA between day 107-164 (988g PC, 966g LNDC vs 961g PC+, 961g LNDC+ P = 0.054). Pig removal increases the space per pig/pen over the course of an experiment, thus potentially influencing the ADG and other treatment effects. This effect must be accounted for in any research trial when evaluating the efficacy of any nutritional product.
    Type of Medium: Online Resource
    ISSN: 0021-8812 , 1525-3163
    URL: Article
    DOI: 10.1093/jas/skac064.298
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1490550-4
    SSG: 12
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  • 3
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    PSIII-12 Peripheral blood parameters as proxies of performance in beef cattle: Heritability and genetic correlations between peripheral blood parameters and performance phenotypes
    Oxford University Press (OUP) ; 2019
    In:  Journal of Animal Science Vol. 97, No. Supplement_2 ( 2019-07-29), p. 163-164
    Details
    In: Journal of Animal Science, Oxford University Press (OUP), Vol. 97, No. Supplement_2 ( 2019-07-29), p. 163-164
    Abstract: Disease incidence and feed costs are two main drivers in cattle production operations. Frequently environmental stressors such as fescue toxicosis have negative effects on livestock performance and health. Low-cost methods to measure these types of health and stress response phenotypes are needed to capture their impact on production traits. Previous research has correlated white blood cell parameters to disease resistance in beef cattle. Based on this, blood parameters at weaning may be candidates that could be a proxy for selection and identification of high-performance animals in commercial settings. To identify candidate blood parameters, blood samples were collected at weaning on approximately 500 crossbred animals (Angus background crossed with Hereford, Charolais, Sim-Angus, Brangus) born between 2015 and 2016 and raised on toxic fescue. The animals were also genotyped at an approximate density of 50,000 SNPs. Complete blood counts (CBC) were obtained the blood samples and heritabilities for 15 peripheral blood parameters were estimated. For the CBC traits that were measured, heritabilities ranged from low to moderate (0.02 to 0.35). Based on current findings, a substantial genetic component for some CBC parameters exists and selection could be effective at improving these traits. Further research will estimate genetic correlations between peripheral blood parameters, weaning weight and average daily gain (ADG) with the intention of identifying correlated traits to be used in commercial selection programs.
    Type of Medium: Online Resource
    ISSN: 0021-8812 , 1525-3163
    URL: Article
    DOI: 10.1093/jas/skz122.289
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1490550-4
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  • 4
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    Online Resource
    94 Feeding a Multi-Carbohydrase (Rovabio Advance) Improves the Morbidity of Wean-to-Finish Pigs
    Oxford University Press (OUP) ; 2022
    In:  Journal of Animal Science Vol. 100, No. Supplement_2 ( 2022-04-12), p. 33-33
    Details
    In: Journal of Animal Science, Oxford University Press (OUP), Vol. 100, No. Supplement_2 ( 2022-04-12), p. 33-33
    Abstract: The objective was to determine the effects of the multi-carbohydrase Rovabio Advance on growth performance, mortality, and morbidity of wean to finish pigs. In the trial, 1,260 DNA weanling barrows were fed from 5.9 kg to 133 kg live weight. Four diets were fed: positive control (PC), low nutrient density control (LNDC), PC with Rovabio Advance (PC+), and LNDC with Rovabio Advance (LNDC+). LNDC compared with PC contained 41 Kcal/kg less NE and 0.012% less SID lysine. Positive control diets contained 1.3% more added fat than LNDC. During each phase, all diets contained equal amounts of wheat middlings and corn DDGS, beginning at 3.75% each and increasing to 15% each. Each pen had 21 pigs each with 15 pens per dietary treatment. Pigs and feed were measured throughout all growth phases, as were the number and weight of dead pigs (mortality) and other pig removals (morbidity). Ten pigs per pen were harvested at 150 d on feed and the balance at 164 d on feed. Pigs fed PC vs LNDC had greater ADG and G:F and final live weight (P & lt; 0.01). Feeding Rovabio reduced pigs removed from test by nearly 40% (8.1 vs 4.9%, (P & lt; 0.03)). Standard deviation within pen of hot carcass weight tended (P & lt; 0.22) to be reduced by feeding Rovabio Advance and was reduced (P & lt; 0.03) by LNDC vs PC. Pig value per unit carcass weight was improved by Rovabio Advance (P & lt; 0.14) and by LNDC (P & lt; 0.01). In conclusion, feeding Rovabio Advance from weaning (5.9 kg) to finish (133 kg) decreases pig morbidity.
    Type of Medium: Online Resource
    ISSN: 0021-8812 , 1525-3163
    URL: Article
    DOI: 10.1093/jas/skac064.054
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1490550-4
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  • 5
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    Online Resource
    Estimating breed composition for pigs: A case study focused on Mangalitsa pigs and two methods
    Elsevier BV ; 2021
    In:  Livestock Science Vol. 244 ( 2021-02), p. 104398-
    Details
    In: Livestock Science, Elsevier BV, Vol. 244 ( 2021-02), p. 104398-
    Type of Medium: Online Resource
    ISSN: 1871-1413
    URL: Article
    DOI: 10.1016/j.livsci.2021.104398
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 2226834-0
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  • 6
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    Online Resource
    94 Genetic basis of blood traits in beef cattle and their relationship to production traits at weaning
    Oxford University Press (OUP) ; 2020
    In:  Journal of Animal Science Vol. 98, No. Supplement_3 ( 2020-11-30), p. 29-29
    Details
    In: Journal of Animal Science, Oxford University Press (OUP), Vol. 98, No. Supplement_3 ( 2020-11-30), p. 29-29
    Abstract: Disease represents one of the main factors that determine profitability in animal production. Previous research has observed significant correlations between blood cell counts and the animal’s health status. We hypothesize that blood cell traits may be an effective indicator of performance in beef cattle. Complete blood counts were recorded from approximately 500 crossbred animals at weaning (Angus background crossed with Hereford, Charolais, Sim-Angus, Brangus) born between 2015 and 2016 and raised on toxic or novel tall fescue on three different farms. The animals were genotyped at an approximate density of 50,000 SNPs and the genotypes were imputed to an approximate density of 200,000 SNPs. Heritability, genetic and phenotypic correlations were estimated for 15 blood and 4 production traits across and within environments. Finally, with the objective of identifying the genetic basis underlying the different blood traits, a genome wide association study (GWAS) was performed for all traits. Heritability estimates ranged from 0.11 to 0.60, and generally weak phenotypic correlations and strong genetic correlations were found, however these parameters varied across environments, pointing to GxE interactions. GWAS identified 90 1 Mb windows that explained 0.5% or more of the estimated genetic variance for at least 1 trait with 21 windows overlapping two or more traits. Further research efforts include identifying underlying candidate genes for traits and comparing toxic and novel fescue effects on blood traits. It appears that blood traits have weak phenotypic correlations but strong genetic correlations among themselves, as evidenced by important overlapping regions of genetic control for similar blood traits. However, blood traits have limited potential as indicator traits for productivity.
    Type of Medium: Online Resource
    ISSN: 0021-8812 , 1525-3163
    URL: Article
    DOI: 10.1093/jas/skaa054.052
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1490550-4
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    Signatures of Selection and Genomic Diversity of Muskellunge (Esox masquinongy) from Two Populations in North America
    MDPI AG ; 2021
    In:  Genes Vol. 12, No. 7 ( 2021-06-30), p. 1021-
    Details
    In: Genes, MDPI AG, Vol. 12, No. 7 ( 2021-06-30), p. 1021-
    Abstract: Muskellunge (Esox masquinongy) is the largest and most prized game fish in North America. However, little is known about Muskellunge genetic diversity in Iowa’s propagation program. We used Whole-Genome Sequencing of 12 brooding individuals from Iowa and publicly available RAD-seq of 625 individuals from the St. Lawrence River in Canada to study the genetic differences between populations, analyze signatures of selection, and evaluate the levels of genetic diversity in both populations. Given that there is no reference genome available, reads were aligned to the genome of Pike (Esox lucius). Variant calling produced 7,886,471 biallelic variants for the Iowa population and 16,867 high-quality SNPs that overlap with the Canadian samples. Principal component analysis (PCA) and Admixture analyses showed a large genetic difference between Canadian and Iowan populations. Window-based pooled heterozygosity found 6 highly heterozygous windows in the Iowa population and Fst between populations found 14 windows with fixation statistic (Fst) values larger than 0.9. Canadian inbreeding rate (Froh = 0.32) appears to be higher due to the inbreeding of Iowa population (Froh = 0.03), presumably due to isolation of subpopulations. Although inbreeding does not seem to be an immediate concern for Muskellunge in Iowa, the Canadian population seems to have a high rate of inbreeding. Finally, this approach can be used to assess the long-term viability of the current management practices of Muskellunge populations across North America.
    Type of Medium: Online Resource
    ISSN: 2073-4425
    URL: Article
    DOI: 10.3390/genes12071021
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2527218-4
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