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Identification of biomarkers associated with the feed efficiency by metabolomics profiling:results from the broiler lines divergent for high or low abdominal fat content

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Journal of Animal Science and Biotechnology 2023年第1期14卷 33-46页

作者： Zhiyong Su Xue Bai Haoyu Wang Shouzhi Wang Chong Chen Fan Xiao Huaishun Guo Haihe Gao Li Leng Hui Li Key Laboratory of Chicken Genetics and Breeding Ministry of Agriculture and Rural AffairsHarbin 150030China. Key Laboratory of Animal Genetics Breeding and ReproductionEducation Department of Heilongjiang ProvinceHarbin 150030China. College of Animal Science and Technology Northeast Agricultural UniversityHarbin 150030China. Fujian Sunnzer Biotechnology Development Co. LtdGuangze 354100China.

Background:Improving feed efficiency(FE)is one of the main objectives in broiler *** is difficult to directly measure FE traits,and breeders hence have been trying to identify biomarkers for the indirect selection and improvement of FE *** is the"bridge"between genome and *** metabolites may potentially account for more of the phenotypic variation and can suitably serve as biomarkers for selecting FE *** study aimed to identify plasma metabolite markers for selecting high-FE broilers.A total of 441 birds from Northeast Agricultural University broiler lines divergently selected for abdominal fat content were used to analyze plasma metabolome and estimate the genetic parameters of differentially expressed ***:The results identified 124 differentially expressed plasma metabolites(P<0.05)between the lean line(highFE birds)and the fat line(low-FE birds).Among these differentially expressed plasma metabolites,44 were found to have higher positive or negative genetic correlations with FE traits(|r_g|≥0.30).Of these 44 metabolites,14 were found to display moderate to high heritability estimates(h~2≥0.20).However,among the 14 metabolites,4 metabolites whose physiological functions have not been reported were ***,10 metabolites were suggested to serve as the potential biomarkers for breeding the high-FE *** on the physiological functions of these metabolites,reducing inflammatory and improving immunity were proposed to improve FE and increase production ***:According to the pipeline for the selection of the metabolite markers established in this study,it was suggested that 10 metabolites including 7-ketocholesterol,dimethyl sulfone,epsilon-(gamma-glutamyl)-lysine,gamma-glutamyltyrosine,2-oxoadipic acid,L-homoarginine,testosterone,adenosine 5'-monophosphate,adrenic acid,and calcitriol could be used as the potential biomarkers for breeding the"food-saving broilers".

关键词： Biomarker Broiler feed efficiency Metabolomics

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Identification of gut microbes associated with feed efficiency by daily-phase feeding strategy in growing-finishing pigs

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Animal Nutrition 2023年第1期12卷 42-53页

作者： Qin Jiang Chunlin Xie Lingli Chen Hongli Xiao Zhilian Xie Xiaoyan Zhu Libao Ma Xianghua Yan State Key Laboratory of Agricultural Microbiology Hubei Hongshan LaboratoryFrontiers Science Center for Animal Breeding and Sustainable ProductionCollege of Animal Sciences and TechnologyHuazhong Agricultural UniversityWuhanHubei 430070China The Cooperative Innovation Center of Sustainable Pig Production WuhanHubei 430070China Hubei Provincial Engineering Laboratory for Pig Precision feeding and feed Safety Technology WuhanHubei 430070China

feed efficiency is one of the most important issues for sustainable pig ***-phase feeding(DPF)is a form of precision feeding that could improve feed efficiency in *** microbiota can regulate host nutrient digestion,absorption,and ***,which key microbes may play a vital role in improving the feed efficiency during DPF remains *** the present study,we used a DPF program compared to a three-phase feeding(TPF)program in growing-finishing pigs to investigate the effects of gut microbiota on feed efficiency.A total of 204 Landrace×Yorkshire pigs(75 d)were randomly assigned into 2 *** treatment was replicated 8 times with 13 to 15 pigs per replicate *** in the TPF group were fed with a commercial feeding program that supplied fixed feed for phasesⅠ,Ⅱ,andⅢ,starting at 81,101,and 132 d of age,respectively,and pigs in the DPF group were fed a blend of adjacent phase feed from 81 to 155 d at a gradual daily ratio and phaseⅢfeed from 155 to 180 d of *** feed intake and body weight were recorded by a computerized device in the *** and blood samples were collected from 1 pig per replicate at 155 and 180 d of *** results showed that the DPF program remarkably improved the feed efficiency at 155 d(Pfeeding program increased the abundance of Prevotella copri(Pfeed efficiency during daily-phase feeding strategies in pigs.

关键词： Daily-phase feeding feed efficiency Gut microbiota Nutrient metabolism Pig

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New insights into the associations among feed efficiency, metabolizable efficiency traits and related QTL regions in broiler chickens

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Journal of Animal Science and Biotechnology 2020年第4期11卷 950-964页

作者： Wei Li Ranran Liu Maiqing Zheng Furong Feng Dawei Liu Yuming Guo Guiping Zhao Jie Wen State Key Laboratory of Animal Nutrition Key Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of AgricultureInstitute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China College of Animal Science and Technology China Agricultural UniversityBeijing 100193China Foshan Gaoming Xinguang Agricultural and animal Industrials Corporation Foshan 528515China.

Background: Improving the feed efficiency would increase profitability for producers while also reducing the environmental footprint of livestock production. This study was conducted to investigate the relationships among feed efficiency traits and metabolizable efficiency traits in 180 male broilers. Significant loci and genes affecting the metabolizable efficiency traits were explored with an imputation-based genome-wide association study. The traits measured or calculated comprised three growth traits, five feed efficiency related traits, and nine metabolizable efficiency ***: The residual feed intake(RFI) showed moderate to high and positive phenotypic correlations with eight other traits measured, including average daily feed intake(ADFI), dry excreta weight(DEW), gross energy excretion(GEE), crude protein excretion(CPE), metabolizable dry matter(MDM), nitrogen corrected apparent metabolizable energy(AMEn), abdominal fat weight(Ab F), and percentage of abdominal fat(Ab P). Greater correlations were observed between growth traits and the feed conversion ratio(FCR) than RFI. In addition, the RFI, FCR, ADFI, DEW,GEE, CPE, MDM, AMEn, Ab F, and Ab P were lower in low-RFI birds than high-RFI birds(P efficiency traits were detected, including one 82.46-kb region for DEW and GEE on Gallus gallus chromosome(GGA) 26, one 120.13-kb region for MDM and AMEn on GGA1, one 691.25-kb region for the coefficients of MDM and AMEn on GGA5, one region for the coefficients of MDM and MCP on GGA2(103.45–103.53 Mb), and one 690.50-kb region for the coefficient of MCP on GGA14. Linkage disequilibrium(LD) analysis indicated that the five regions contained high LD blocks, as well as the genes chromosome 26 C6 orf106 homolog(C26 H6 orf106), LOC396098, SH3 and multiple ankyrin repeat domains 2(SHANK2), ETS homologous

关键词： Broiler feed efficiency Genome-wide association study Imputation Metabolizable efficiency

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Understanding the role of rumen epithelial host-microbe interactions in cattle feed efficiency

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Animal Nutrition 2022年第3期10卷 41-53页

作者： Sang Weon Na Le Luo Guan Department of Agricultural Food&Nutritional ScienceUniversity of AlbertaEdmontonAlbertaCanada

feed efficiency is one of the economically important traits for the cattle industry that affects profit(feed costs)and the environment(production of manure and methane).Due to that feed efficiency is driven by multi-factors,mechanisms contributing to the animal to animal variation in this trait have not been well defined,limiting the development of precision feeding strategies to improve the herd production *** microbial fermentation and volatile fatty acids(VFA)production have been recently reported to be associated with cattle feed efficiency,however the roles of rumen epithelial function in feed efficiency are less studied although the rumen epithelium has an important function in VFA absorption and metabolism which can affect host feed *** epithelium is colonized with a diverse microbial population,termed epimural microbiota,which has proposed functions in tissue development,barrier and inflammation,urea transport,and oxygen scavenging,suggesting that they can affect rumen epithelial functions and subsequently cattle feed ***,prospective functions of epimural microbiota,enhanced rumen immunity and increased rumen epithelial thickness,might contribute to less nutritional requirement for tissue ***,the understanding of the functions of rumen epithelium,epimural microbiota,and rumen epithelial host-microbe interactions is essential to identify their roles in contributing to feed *** this review,we will focus on to date research findings on the structure of rumen epithelium,epimural microbiota,and epithelial host-microbe interactions together with their functions and how these are associated with feed efficiency,aiming to provide insights on future directions to study rumen epithelial host-microbe interactions and improve the rumen functions in cattle.

关键词： Ruminant feed efficiency Rumen epithelium Epimural microbiota Microbiome

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A review of feed efficiency in swine:biology and application

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Journal of Animal Science and Biotechnology 2015年第4期6卷 369-377页

作者： John F.Patience Mariana C.Rossoni-Seräo Nestor A.Gutiérrez Department of Animal Science Iowa State University

feed efficiency represents the cumulative efficiency with which the pig utilizes dietary nutrients for maintenance, lean gain and lipid accretion. It is closely linked with energy metabolism, as the oxidation of carbon-containing components in the feed drive all metabolic processes. While much is known about nutrient utilization and tissue metabolism, blending these subjects into a discussion on feed efficiency has proven to be difficult. For example, while increasing dietary energy concentration will almost certainly increase feed efficiency, the correlation between dietary energy concentration and feed efficiency is surprisingly low. This is likely due to the plethora of non-dietary factors that impact feed efficiency, such as the environment and health as well as individual variation in maintenance requirements, body composition and body weight. Nonetheless, a deeper understanding of feed efficiency is critical at many levels. To individual farms, it impacts profitability. To the pork industry, it represents its competitive position against other protein sources. To food economists, it means less demand on global feed resources. There are environmental and other societal implications as well. Interestingly, feed efficiency is not always reported simply as a ratio of body weight gain to feed consumed. This review will explain why this arithmetic calculation, as simple as it initially seems, and as universally applied as it is in science and commerce, can often be misleading due to errors inherent in recording of both weight gain and feed intake. This review discusses the importance of feed efficiency, the manner in which it can be measured and reported, its basis in biology and approaches to its improvement. It concludes with a summary of findings and recommendations for future efforts.

关键词： Caloric efficiency Energy feed efficiency Residual feed intake Swine

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Dietary lecithin improves feed efficiency without impacting meat quality in immunocastrated male pigs and gilts fed a summer ration containing added fat

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Animal Nutrition 2018年第2期4卷 203-209页

作者： Henny Akit Cherie Collins Fahri Fahri Alex Hung Darryl D'Souza Brian Leury Frank Dunshea Faculty of Veterinary and Agricultural Sciences The University of Melbourne Department of Animal Science Faculty of Agriculture Universiti Putra Malaysia Rivalea Australia Pty Ltd. Australian Pork Ltd.

The aim of this study was to investigate the effects of sex and dietary lecithin on growth performance,meat quality, muscle collagen content and gene expression of key genes involved in collagen synthesis in finisher pigs.A total of 256 pigs(Large White × Landrace) were allotted to a 2 × 2 factorial arrangement involving sex(gilt or immunocastrated [IC] male) and dietary treatment(0 or 5 g/kg of dietary lecithin).All diets were formulated to contain 4.6% tallow with relatively high total fat of 6.3%.After 5 weeks of dietary treatment, pigs were slaughtered and Longissimus dorsi muscle was obtained for evaluation of meat quality and collagen *** abdominis muscle was analysed for gene expression of key genes involved in collagen synthesis namely, type Ⅰ(a1) procollagen(COL1A1), type Ⅲ(a1) procollagen(COL3A1), a-subunit of prolyl 4-hydroxylase(P4H), lysyl oxidase and metalloproteinase-1(MMP-1).The results showed that lecithin improved feed efficiency of all pigs(P feed intake, average daily gain and dressing percentage(P > 0.05).Lecithin also had no effect on meat compression, shear force, collagen content and gene expression(P > 0.05).Immunocastrated male had higher growth rate and increased COL1 A1 expression than ***, sex had no effect on fat depth at the P2 site(65 mm from the midline over the last rib), collagen content and expression of other genes(P > 0.05).In conclusion, lecithin improved feed efficiency in finishing pigs without impacting pork ***, inclusion of lecithin in diets containing high amount of tallow during the summer period could be beneficial.

关键词： Fat feed efficiency Lecithin Meat quality Pigs

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Agolin Ruminant^®, an Essential Oil Blend, Increases Energy-Corrected Milk and feed efficiency in a High Component Dairy Herd

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Open Journal of Animal Sciences 2023年第3期13卷 272-282页

作者： Jorge Noricumbo-Saenz Peter Williams Hector Garcia feedworks USA Ltd. Cincinnati OH USA Moxee Dairy Moxee WA USA

Agolin® Ruminant (Agolin) is a blend of essential oils developed to improve feed efficiency while at the same time reducing rumen enteric methane production. Studies have shown that the product improves lactational performance, but the range of results has been varied. This experiment evaluated the effects of the feed additive Agolinon milk production in a high-component (fat and protein) dairy herd when provided for an extended time. The experiment was conducted at a large commercial dairy in the Pacific Northwest, USA. Eight pens of cows (350 to 500 cows/pen) were blocked by production, and pens within blocks were randomly assigned to treatment. All pens received a common total mixed ration. Treatment consisted of providing 1 g/cow/day of Agolin to the test group. A 4-week adaptation period was followed by an 11-week study period. Milk production and milk composition were determined by cow by averaging daily performance for the one-week period before the start of the trial (covariate period) and the last week of each of the two test periods. feed intakes were determined by pen at the same time. Milk yield was 1.11 kg/cow/day greater (P feed additive. Similarly, protein yields were 0.03 (P feeding period. Milk fat yield was not different (P = 0.854) between treatment groups at the midpoint of the trial but increased with treatment (P = 0.002) by the end of the trial. Energy-corrected milk/feed ratio, based on pen parameters, was significantly altered by treatment at the final test period (1.48 vs. 1.64 kg/kg for control and test treatments, respectively).

关键词： Greenhouse Gas Mitigation Methane feed efficiency Lactating Dairy Cows Agolin

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A Method of Drawing Upseleciton Index for Improving feed efficiency

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Journal of Northeast Agricultural University(English Edition) 1999年第1期6卷 26-30页

作者： Yang Yunqing, Wang Yitong, Yao Xiaomin ( Northeast Agriculture University, Harbin 150030, P R C) Northeast Agriculture University Harbin 150030 P R C

Based on the beneficial trait which is from the two component traits of feed efficiency by price, a method for drawing up selection index to improve feed efficiency is discussed. The method avoids some troubles from directly selecting feed efficiency and settles the questions to draw up selection index for the kind of ratio traits simultaneously.

关键词： feed efficiency beneficial trait selection index

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Dietary oregano essential oil supplementation improves intestinal functions and alters gut microbiota in latephase laying hens

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Journal of Animal Science and Biotechnology 2022年第1期13卷 265-279页

作者： Jia Feng Mingyuan Lu Jing Wang Haijun Zhang Kai Qiu Guanghai Qi Shugeng Wu Laboratory of Quality&Safety Risk Assessment for Animal Products on feed Hazards(Beijing)of the Ministry of Agriculture&Rural Affairs Feed Research InstituteChinese Academy of Agricultural SciencesNo.12 Zhongguancun South St.Haidian DistrictBeijing 10081China

Background:Dietary essential oil(EO)supplementation can exert favorable effects on gut health in ***,it is unknown whether EO could improve intestinal functions,consequently beneficial for egg performance and quality in late-phase laying *** study was aimed to investigate the potential effects of EO on production performance,egg quality,intestinal health and ileal microbiota of hens in the late phase of production.A total of 28860-week-old Hy-line Brown laying hens were randomly divided into 4 groups and fed a basal diet(control)or basal diets supplemented with oregano EO at 100,200 and 400 mg/kg(EO100,EO200 and EO400).Results:Dietary EO supplementation resulted in a quadratic decrease(Pfeed conversion ratio with lower(Pfeed conversion ratio in EO200 group than the control during weeks 9–12 and 1–12 of the *** to the control,EO addition resulted in higher(Pfeed efficiency and eggshell quality of late-phase laying hens.

关键词： Essential oil feed efficiency Immune status Late-phase laying hen Microbiota

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Stress and immunological response of heifers divergently ranked for residual feed intake following an adrenocorticotropic hormone challenge

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Journal of Animal Science and Biotechnology 2018年第1期9卷 111-118页

作者： A.K.Kelly P.Lawrence B.Earley D.A.Kenny M.McGee School of Agriculture and Food Science College of Health and Agricultural SciencesUniversity College Dublin Livestock Systems Research Department Teagasc Animal&Grassland Research and Innovation CentreGrangeDunsanyCo. Animal and Bioscience Research Department Animal&Grassland Research and Innovation CentreTeagascDunsanyCo.

Background： When an animal is exposed to a stressor, metabolic rate, energy consumption and utilisation increase primarily through activation of the hypothalamic-pituitary-adrenal（HPA） axis. Changes to partitioning of energy by an animal are likely to influence the efficiency with which it is utilised. Therefore, this study aimed to determine the physiological stress response to an exogenous adrenocorticotropic hormone（ACTH） challenge in beef heifers divergently ranked on phenotypic residual feed intake（RFI）.Results： Data were collected on 34 Simmental weaning beef heifers the progeny of a well characterized and divergently bred RFI suckler beef herd. Residual feed intake was determined on each animal during the postweaning stage over a 91-day feed intake measurement period during which they were individually offered adlibitum grass silage and 2 kg of concentrate per head once daily. The 12 highest [0.34 kg DM/d] and 12 lowest[-0.48 kg DM/d] ranking animals on RFI were selected for use in this study. For the physiological stress challenge heifers（mean age 605 ± 13 d; mean BW 518 ± 31.4 kg） were fitted aseptically with indwelling jugular catheters to facilitate intensive blood collection. The response of the adrenal cortex to a standardised dose of ACTH（1.98 IU/kg metabolic BW^（0.75）） was examined. Serial blood samples were analysed for plasma cortisol, ACTH and haematology variables. Heifers differing in RFI did not differ（P = 0.59） in ACTH concentrations. Concentration of ACTH peaked（P 〈 0.001） in both RFI groups at 20 min post-ACTH administration, following which concentration declined to baseline levels by 150 min. Similarly, cortisol systemic profile peaked at 60 min and concentrations remained continuously elevated for 150 min. A RFI × time interaction was detected for cortisol concentrations（P = 0.06） with high RFI heifers had a greater cortisol response than Low RFI from 40 min to 150 min relative to ACTH administration. Cortisol response was positively assoc

关键词： Beef cattle Cortisol feed efficiency Residual feed intake Stress response

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