Buffalo heifers selected for lower residual feed intake have lower feed intake, better dietary nitrogen utilisation and reduced enteric methane production

Sharma, Vijay Kumar; Kundu, S. S.; Datt, Chander; Prusty, Sonali; Kumar, Muneendra; Sontakke, Umesh Balaji

doi:10.1111/jpn.12802

Cited by 15 publications

(5 citation statements)

References 32 publications

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“…Butyrate is the major energy substrate for colonocytes, and provides many benefits to heifer calves such as improved epithelial tight junctions and reduced inflammatory status [42]. Blautia and Succinivibrio produce propionate which competes with methanogens for H 2 [43], leading to less enteric methane production in M-eff buffalo heifers [44]. Absorption of propionate by colonocytes would provide a key hepatic gluconeogenic precursor to heifers, hence, indirectly increasing the supply of glucose from what is absorbed from the lumen of the small intestine [45].…”

Section: Hindgut Microbiome and Metabolome During The Preweaning Perimentioning

confidence: 99%

Residual feed intake divergence during the preweaning period is associated with unique hindgut microbiome and metabolome profiles in neonatal Holstein heifer calves

Elolimy

Alharthi

Zeineldin

et al. 2020

J Animal Sci Biotechnol

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Background: Recent studies underscored that divergence in residual feed intake (RFI) in mature beef and dairy cattle is associated with changes in ruminal microbiome and metabolome profiles which may contribute, at least in part, to better feed efficiency. Because the rumen in neonatal calves during the preweaning period is underdeveloped until close to weaning, they rely on hindgut microbial fermentation to breakdown undigested diet components. This leads to production of key metabolites such as volatile fatty acids (VFA), amino acids, and vitamins that could potentially be absorbed in the hind-gut and help drive growth and development. Whether RFI divergence in neonatal calves is associated with changes in hindgut microbial communities and metabolites is largely unknown. Therefore, the objective of the current study was to determine differences in hindgut microbiome and metabolome in neonatal Holstein heifer calves retrospectively-grouped based on feed efficiency as mostefficient (M-eff) or least-efficient (L-eff) calves using RFI divergence during the preweaning period. Methods: Twenty-six Holstein heifer calves received 3.8 L of first-milking colostrum from their respective dams within 6 h after birth. Calves were housed in individual outdoor hutches bedded with straw, fed twice daily with a milk replacer, and had ad libitum access to a starter grain mix from birth to weaning at 42 d of age. Calves were classified into M-eff [n = 13; RFI coefficient = − 5.72 ± 0.94 kg DMI (milk replacer + starter grain)/d] and L-eff [n = 13; RFI coefficient = 5.61 ± 0.94 kg DMI (milk replacer + starter grain)/d] based on a linear regression model including the combined starter grain mix and milk replacer DMI, average daily gain (ADG), and metabolic body weight (MBW). A deep sterile rectal swab exposed only to the rectum was collected immediately at birth before colostrum feeding (i.e., d 0), and fecal samples at d 14, 28, and 42 (prior to weaning) for microbiome and untargeted metabolome analyses using 16S rRNA gene sequencing and LC-MS. Microbiome data were analyzed with the QIIME 2 platform and metabolome data with the MetaboAnalyst 4.0 pipeline.

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Section: Hindgut Microbiome and Metabolome During The Preweaning Perimentioning

confidence: 99%

Residual feed intake divergence during the preweaning period is associated with unique hindgut microbiome and metabolome profiles in neonatal Holstein heifer calves

Elolimy

Alharthi

Zeineldin

et al. 2020

J Animal Sci Biotechnol

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“…Feed cost, account for 60-70% of the total cost of the modern poultry industry, has become one of the most important factors restricting the development of the poultry industry. A strategy to improve feed efficiency is a high priority for the poultry industry to reduce feed costs and nitrogen excretion [1]. Residual feed intake (RFI) has become a sensitive and accurate indicator of feed efficiency.…”

Section: Introductionmentioning

confidence: 99%

Identification of key genes and pathways associated with feed efficiency of native chickens based on transcriptome data via bioinformatics analysis

Yang

Xiong

et al. 2020

BMC Genomics

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Background: Improving feed efficiency is one of the important breeding targets for poultry industry. The aim of current study was to investigate the breast muscle transcriptome data of native chickens divergent for feed efficiency. Residual feed intake (RFI) value was calculated for 1008 closely related chickens. The 5 most efficient (LRFI) and 5 least efficient (HRFI) birds were selected for further analysis. Transcriptomic data were generated from breast muscle collected post-slaughter. Results: The differently expressed genes (DEGs) analysis showed that 24 and 325 known genes were significantly up-and down-regulated in LRFI birds. An enrichment analysis of DEGs showed that the genes and pathways related to inflammatory response and immune response were up-regulated in HRFI chickens. Moreover, Gene Set Enrichment Analysis (GSEA) was also employed, which indicated that LRFI chickens increased expression of genes related to mitochondrial function. Furthermore, protein network interaction and function analyses revealed ND2, ND4, CYTB, RAC2, VCAM1, CTSS and TLR4 were key genes for feed efficiency. And the 'phagosome', 'cell adhesion molecules (CAMs)', 'citrate cycle (TCA cycle)' and 'oxidative phosphorylation' were key pathways contributing to the difference in feed efficiency. Conclusions: In summary, a series of key genes and pathways were identified via bioinformatics analysis. These key genes may influence feed efficiency through deep involvement in ROS production and inflammatory response. Our results suggested that LRFI chickens may synthesize ATP more efficiently and control reactive oxygen species (ROS) production more strictly by enhancing the mitochondrial function in skeletal muscle compared with HRFI chickens. These findings provide some clues for understanding the molecular mechanism of feed efficiency in birds and will be a useful reference data for native chicken breeding.

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“…In the study conducted to evaluate the utilization of the residual feed intake (RFI) as a feed efficiency selection tool and its relationship with methane emissions, [13] reported that the selection of more efficient buffalo heifers has multiple benefits, such as decreased feed intake and less emission of methane.…”

Section: Discussionmentioning

confidence: 99%

Methane Emission Factor in Italian Mediterranean Buffalo According to Production Management

Ciriello

Albano

Auriemma

et al. 2020

CJAST

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The environmental impact of greenhouse gases caused by livestock farms plays a fundamental role due to the implications and environmental consequences that livestock practices entail, affecting the stability of the entire ecosystem connected to them, especially as a consequence of the growing demand for products of animal origin. The aim of this work was to quantify the CH4 emissions factor in lactating buffaloes by comparing four different types of livestock management: family, conventional, organic and sustainable. To determine the enteric CH4 emissions from buffalo, information about animal production and farm management was analyzed, and the CH4 emission factor was calculated using the IPCC Tier 2 model. ANOVA was conducted to evaluate significant differences between the farms; Pearson’s correlation was used to evaluate the relationship between parameters. In a conventional farm, the CH4 emission factor for buffalo was 27.69 kg CH4/head/yr compared to 22.77 and 21.61 kg CH4/head/yr respectively for organic and family-run. These data may also depend on the higher protein and fiber content in the administered unifeed. Furthermore, the ratio of enteric emissions factor of CH4 / gross energy intake ratio reflected these data (12.04 vs 10.93 vs 10.16 vs 10.65 for conventional, organic, sustainable, and family-run farms, respectively).

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Buffalo heifers selected for lower residual feed intake have lower feed intake, better dietary nitrogen utilisation and reduced enteric methane production

Cited by 15 publications

References 32 publications

Residual feed intake divergence during the preweaning period is associated with unique hindgut microbiome and metabolome profiles in neonatal Holstein heifer calves

Residual feed intake divergence during the preweaning period is associated with unique hindgut microbiome and metabolome profiles in neonatal Holstein heifer calves

Identification of key genes and pathways associated with feed efficiency of native chickens based on transcriptome data via bioinformatics analysis

Methane Emission Factor in Italian Mediterranean Buffalo According to Production Management

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