Variation in residual feed intake
Identifying Potential Sources of Variation in Residual Feed Intake in Beef Cattle
... correlations existed between ADG and both KR (r = 0.82 and 0.83, respectively) and RGR (r = 0.71 and 0.68, respectively). Conversely, FCR exhibited a negative phenotypic and genetic relationship with ADG (r = -0.54 and ...
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Determining biological sources of variation in residual feed intake in Brahman heifers during confinement feeding and on pasture
... for variation in DMD to explain some of the subsequent variation in ...of variation in DMD from week to week within an individual ...of variation in the values used to produce these ...the ...
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Examining Mechanisms Contributing to the Biological Variation of Residual Feed Intake in Growing Heifers and Bulls and in Mid-Gestation Females
... predict intake of cattle on pasture on a group basis (Mann and Stewart 2003; Molina et ...that intake of tropical forage harvested daily and measured by Calan-gate feeders was comparable to herbage ...
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The genetic basis of feed efficiency in swine divergently selected for residual feed intake
... al., 2014a). In another Duroc population, no QTL were identified that explained more than 1% of the genetic variation in RFI when a Bayesian GWAS was conducted (Jiao et al., 2013). The top regions associated with ...
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Feed Restriction Modifies Intestinal Microbiota-Host Mucosal Networking in Chickens Divergent in Residual Feed Intake
... same feed intake on all chickens in order to clarify whether the RFI-associated variation in chicken’s feed intake is a factor vital to RFI-related differences in intestinal microbial ...
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Defining physiological differences between gilts divergently selected for residual feed intake
... to feed efficiency in livestock production due to the rising costs of feed and other ...regulating feed efficiency (FE) in swine is relatively limited. Residual feed intake (RFI) ...
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Porcine Feed Efficiency-Associated Intestinal Microbiota and Physiological Traits: Finding Consistent Cross-Locational Biomarkers for Residual Feed Intake
... rank, variation between pigs was observed; these taxa differences appear to explain, at least in part, differences in FE and could potentially be used as microbial biomarkers for ...
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Analysis of meat quality traits and gene expression profiling of pigs divergent in residual feed intake
... ACCEPTED MANUSCRIPT speculated on a link between IMF and tenderness, due to greater ease of tissue disruption in areas richer in fat cells. Furthermore, trained panellists scored meat from LRFI pigs as less sweet and ...
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Stress and immunological response of heifers divergently ranked for residual feed intake following an adrenocorticotropic hormone challenge
... in feed efficiency have an altered HPA axis function in response to a physiological stressor (ACTH adrenal stimuli) and susceptibility to stress and responsiveness of the HPA axis is likely to contribute to ...
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Nitrogen partitioning and microbial protein synthesis in lactating dairy cows with different phenotypic residual feed intake
... limited variation in N utilization for milk production in cows producing high milk protein yields with different ...the variation in ...for variation in RFI in high milk protein yield dairy ...
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An integrative transcriptome analysis indicates regulatory mRNA-miRNA networks for residual feed intake in Nelore cattle
... for residual feed intake in Nelore cattle Abstract Residual Feed Intake (RFI) is an economically relevant trait in beef ...or feed efficient]; N = 10 [high RFI or ...
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Intestinal microbiota profiles associated with low and high residual feed intake in chickens across two geographical locations
... Irrespective of the sex, more cross-locational associations between bacteria of low and high abundance and TFI, TBWG and FCR were observed in the present study, supporting interac- tions between the bacterial community ...
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GWAS and eQTL analysis identifies a SNP associated with both residual feed intake and GFRA2 expression in beef cattle
... observed variation is by carrying out expression quantitative trait loci (eQTL) ...to feed efficiency as they are both large, metabolically active tissues accounting for approximately 24% and 25% of basal ...
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Residual feed intake phenotype and gender affect the expression of key genes of the lipogenesis pathway in adipose tissue of beef cattle
... between the results reported here and those of other au- thors may be a consequence of variation in diet, gender, breed and stage of maturity of the animals employed. This study highlights the relationship between ...
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The effect of selection for residual feed intake on general behavioral activity, occurrence of lesions, scale activity and exit score in Yorkshire gilts
... variation of RFI in Dutch Landrace and Great Yorkshire pigs was accounted for by the number of visits to the feeders and daily eating time. This was in contrast to Rauw et al. (2006), who concluded that for a ...
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Residual feed intake in beef cattle and its association with carcass traits, ruminal solid-fraction bacteria, and epithelium gene expression
... Most of the available RFI studies in beef cattle are lim- ited to either steers or heifers, hence, the association be- tween RFI and sex also warrants further investigation. It was hypothesized that holistic evaluation ...
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Residual feed intake phenotype and gender affect the expression of key genes of the lipogenesis pathway in subcutaneous adipose tissue of beef cattle
... between the results reported here and those of other au- thors may be a consequence of variation in diet, gender, breed and stage of maturity of the animals employed. This study highlights the relationship between ...
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Quantitative analysis of ruminal methanogenic microbial populations in beef cattle divergent in phenotypic residual feed intake (RFI) offered contrasting diets
... minimise variation, all samples included in each analysis were derived from the same extracted DNA batch, prepared under the same condi- tions and samples were run in ...
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CASE STUDY: Feed Intake and Performance of Heifers Sired by High- or Low-Residual Feed Intake Angus Bulls
... , residual feed intake INTRODUCTION Feed costs continue to be a large portion of the total expenses of a beef cattle ...quality. Feed continues to be a major cost to the cow-calf, ...
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Review. Divergent selection for residual feed intake in the growing pig
... These changes in meat quality were associated with changes of the muscular energy metabolism. Reduced maintenance energy requirements ( −10% after five generations of selection) and activity (−21% of time standing after ...
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