Higher plane of nutrition pre-weaning enhances Holstein calf mammary gland development through alterations in the parenchyma and fat pad transcriptome.
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ABSTRACT:
SUBMITTER: Vailati-Riboni M
PROVIDER: S-EPMC6290502 | biostudies-literature | 2018 Dec
REPOSITORIES: biostudies-literature
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Higher plane of nutrition pre-weaning enhances Holstein calf mammary gland development through alterations in the parenchyma and fat pad transcriptome.
Vailati-Riboni M M Bucktrout R E RE Zhan S S Geiger A A McCann J C JC Akers R M RM Loor J J JJ
BMC genomics 20181211 1
<h4>Background</h4>To reduce costs of rearing replacement heifers, researchers have focused on decreasing age at breeding and first calving. To increase returns upon initiation of lactation the focus has been on increasing mammary development prior to onset of first lactation. Enhanced plane of nutrition pre-weaning may benefit the entire replacement heifer operation by promoting mammary gland development and greater future production.<h4>Methods</h4>Twelve Holstein heifer calves (< 1 week old) ...[more]
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Project description:Background: To reduce costs of rearing replacement heifers, researchers have focused on decreasing age at breeding and first calving, and to increase returns upon initiation of lactation the focus has been on increasing mammary development prior to onset of first lactation. Enhanced plane of nutrition pre-weaning may benefit the entire replacement heifer operation by promoting mammary gland development and greater future production. Methods: Twelve Holstein heifer calves (<1 wk old) were reared on 1 of 2 dietary treatments (n = 6/group) for 8 wk: a control group fed a restricted milk replacer at 0.45 kg/d (R, 20% crude protein, 20% fat), or an accelerated group fed an enhanced milk replacer at 1.13 kg/d (EH, 28% crude protein, 25% fat). At weaning (8 wk), calves were euthanized and sub-samples of mammary parenchyma (PAR) and mammary fat pad (MFP) were harvested upon removal from the body. Total RNA from both tissues was extracted and sequenced using the Illumina HiSeq2500 platform. The Dynamic Impact Approach (DIA) and Ingenuity Pathway Analysis (IPA) were used for pathway analysis and functions, gene networks, and cross-talk analyses of the two tissues. Results: When comparing EH vs R 1,561 genes (↑895, and ↓666) and 970 genes (↑506, and ↓464) were found differentially expressed in PAR and MFP, respectively. DIA and IPA results highlight a greater proliferation and differentiation activity in both PAR and MFP, supported by an increased metabolic activity. When calves were fed EH, the PAR displayed transcriptional signs of greater overall organ development, with higher ductal growth and branching, together with a supportive blood vessel and nerve network. These activities were mediated by intracellular cascades, such as AKT, SHH, MAPKs, and Wnt, probably activated by hormones, growth factors, and endogenous molecules. The analysis also revealed strong communication between MFP and PAR, with the first enhancing the development of PAR through secreted growth factors and the recruitment of immune cells. Conclusion: The transcriptomics and bioinformatics approach highlighted the mechanisms that mediate the mammary gland response to a higher plane of nutrition in the pre-weaning period.
2018-05-01 | GSE102435 | GEO
Project description:Enhanced plane of nutrition at pre-weaning stage can promote the development of mammary gland especially heifer calves. Although several genes are involved in this process, long intergenic non-coding RNAs (lincRNAs) are regarded as key regulators in the regulated network and are still largely unknown. We identified and characterized 534 putative lincRNAs based on the published RNA-seq data, including heifer calves in two groups: fed enhanced milk replacer (EH, 1.13 kg/day, including 28% crude protein, 25% fat) group and fed restricted milk replacer (R, 0.45 kg/day, including 20% crude protein, 20% fat) group. Sub-samples from the mammary parenchyma (PAR) and mammary fat pad (MFP) were harvested from heifer calves. According to the information of these lincRNAs' quantitative trait loci (QTLs), the neighboring and co-expression genes were used to predict their function. By comparing EH vs R, 79 lincRNAs (61 upregulated, 18 downregulated) and 86 lincRNAs (54 upregulated, 32 downregulated) were differentially expressed in MFP and PAR, respectively. In MFP, some differentially expressed lincRNAs (DELs) are involved in lipid metabolism pathways, while, in PAR, among of DELs are involved in cell proliferation pathways. Taken together, this study explored the potential regulatory mechanism of lincRNAs in the mammary gland development of calves under different planes of nutrition.
| S-EPMC8145500 | biostudies-literature
Project description:ObjectiveThis research study aimed to determine whether preweaning plane of milk-replacer nutrition influences health, standing and oral behaviors, and performance of high-risk calves.Materials and MethodsThirty-six Holstein bull calves (1 d of age) from a commercial calf ranch were assigned to either a high plane of milk-replacer nutrition (HPN; n = 18; 20 and 28% DM lipid and protein, respectively, Cow’s Match, Land O’Lakes Animal Milk Protein Co., Shoreview, MN) or a low plane of milk-replacer nutrition (LPN; n = 18; 20% DM lipid and protein, Herd Maker, Land O’Lakes Animal Milk Protein Co.) through weaning. Total serum protein concentrations confirmed that 72 and 76% of calves had failure of passive transfer (<5.2 g/dL) in HPN and LPN, respectively. All calves were bottle fed twice daily. The LPN were fed 455 g of DM/d of milk replacer (MR) until weaning, and the HPN calves were fed 830 g of DM/d of milk replacer during the first 10 d and 1,080 g from 11 d until weaning. Calf starter and water were offered ad libitum. Calves were step-down weaned beginning at 51 d and completely weaned after 58 d when consuming 1 kg of calf starter (as-fed basis). Data are reported as HPN versus LPN throughout, respectively.Results and DiscussionRisk for bloat and scouring were greater for calves fed the HPN, but there was no difference in antibiotic treatment or mortality. The HPN calves had greater performance over the preweaning period including final BW, ADG, and feed:gain (total kg of milk replacer + calf starter, kg of DM/kg of BW gain), but weaning was more stressful for HPN calves.Implications and ApplicationsIn conclusion, the high-risk calves fed a HPN had increased preweaning ADG, but there was also an increased incidence of scours. There may be differences in the health status of calves that may affect the ability to consume and use high MR levels. When feeding high-risk calves there may be a need for alternate strategies when determining the quality and quantity of MR being fed when compared with low-risk calves. Differences in gut integrity may influence the ability of high-risk calves to handle high levels of MR early in life. Potential issues with high-risk calves being fed a HPN might be reduced with increased feeding times per day, a gradual step-up method, or other nutritional strategies that improve gastrointestinal development and function.
| S-EPMC7270217 | biostudies-literature
Project description:Genome-wide gene expression profiling allows for identification of genes involved in the defense response of the host against pathogens. As presented here, transcriptomic analysis and bioinformatics tools were applied in order to identify genes expressed in the mammary gland parenchyma of cows naturally infected with coagulase-positive and coagulase-negative Staphylococci.In cows infected with coagulase-positive Staphylococci, being in 1st or 2nd lactation, 1700 differentially expressed genes (DEGs) were identified. However, examination of the 3rd or 4th lactations revealed 2200 DEGs. Gene ontology functional classification showed the molecular functions of the DEGs overrepresented the activity of cytokines, chemokines, and their receptors. In cows infected with coagulase-negative Staphylococci, in the 1st or 2nd lactations 418 DEGs, while in the 3rd or 4th lactations, 1200 DEGs were identified that involved in molecular functions such as protein, calcium ion and lipid binding, chemokine activity, and protein homodimerization. Gene network analysis showed DEGs associated with inflammation, cell migration, and immune response to infection, development of cells and tissues, and humoral responses to infections caused by both types of Staphylococci.A coagulase-positive Staphylococci infection caused a markedly stronger host response than that of coagulase-negative, resulting in vastly increased DEGs. A significant increase in the expression of the FOS, TNF, and genes encoding the major histocompatibility complex proteins (MHC) was observed. It suggests these genes play a key role in the synchronization of the immune response of the cow's parenchyma against mastitis-causing bacteria. Moreover, the following genes that belong to several physiological pathways (KEGG pathways) were selected for further studies as candidate genes of mammary gland immune response for use in Marker Assisted Selection (MAS): chemokine signaling pathway (CCL2, CXCL5, HCK, CCR1), cell adhesion molecules (CAMs) pathway (BOLA-DQA2, BOLA-DQA1, F11R, ITGAL, CD86), antigen processing and presentation pathway (CD8A, PDIA3, LGMN, IFI30, HSPA1A), and NOD-like receptor signaling pathway (TNF, IL8, IL18, NFKBIA).
| S-EPMC5477815 | biostudies-other
Project description:Characterizing estrogen-responsive genes is an essential step towards fully understanding mechanisms of estrogen action during mammary gland development and function. To catalogue these genes, sixteen prepubertal heifers were used in a 2 x 2 factorial with ovarian status (intact or ovariectomized) as the first factor and estrogen treatment as the second (control or estradiol). Heifers were ovariectomized at approximately 4.5 months of age and estrogen treatments were initiated one month later. After 3 days of treatment, gene expression in the parenchyma and fat pad of the bovine mammary gland was analyzed using a high-density oligonucleotide microarray. This microarray contained probes representing 40,808 Tentative Consensus sequences from the TIGR Bos taurus Gene Index and 4,575 singletons derived from libraries of pooled mammary gland and gut tissues. Microarray data were analyzed using the SAS Mixed Procedure with permutation testing. A total of 125 estrogen-responsive genes were identified using an experiment-wide permutation-based significance level of P < 0.1. Among these genes are known estrogen-targeted genes such as stanniocalcin 1, alpha-1-antiproteinase, progesterone receptor, nucleobindin 2, insulin-like growth factor 1, and tissue factor pathway inhibitor. However, the majority of the genes identified were not previously reported to be estrogen-responsive. In silico mapping and an estrogen response element (ERE) search indicated potential EREs in the promoter regions of some of these novel estrogen-responsive genes. The distinctive expression patterns regulated by estrogen in parenchyma and fat pad suggest mechanisms of action and reciprocal signaling between cell types. Keywords: Cell type comparision, two class unpaired design
2006-01-28 | GSE4054 | GEO
Project description:Weaned calves are susceptible to infectious diseases because of the stress and malnutrition that occurs during weaning. Therefore, the dairy industry requires effective feed additives to ameliorate stress responses and promote immunity. This study aimed to investigate the effects of hydrolyzed yeast (HY) supplementation on the growth performance, immune and stress parameters, and health status of calves after weaning. Eighteen Holstein calves were randomly assigned to two groups, either receiving a control calf starter or 0.2% HY calf starter from one week of age. All calves were weaned at six weeks of age as a stress challenge. The HY-fed calves had a significantly-higher body weight gain during the post-weaning period (kg/week) compared to the control. Cortisol levels at three days post-weaning (DPW) were significantly lower in the HY group than the control group. Calves fed HY had significantly-higher serum levels of tumor necrosis factor-α and interleukin-1β at one DPW. The HY-fed calves also had higher concentrations of the acute-phase proteins, haptoglobin, serum amyloid A, and transferrin at one DPW. In addition, the diarrhea severity in HY-fed calves was milder after weaning compared to the control group. Our results indicate that HY supplementation reduces stress responses and may promote innate immunity in newly-weaned calves.
| S-EPMC7552225 | biostudies-literature
Project description:We investigated the relationship between ruminal pH and bacteria in calves fed calf starter with and without forage during weaning transition. First, 16 Holstein bull calves were obtained from dairy farms and equipped with rumen cannulas by cannulation surgery. Then, calves (73.5 ± 4.2 kg; mean ± SE) were assigned to groups fed calf starter either with forage (HAY, n = 8) or without forage (CON, n = 8), and all calves were weaned at 8 weeks of age. Ruminal pH was measured continuously, and rumen fluid samples were collected at 7, 8, 9, and 11 weeks of age, namely -1, 0, 1, and 3 weeks after weaning, respectively, to assess volatile fatty acid concentrations and bacterial DNA. The 24-h mean ruminal pH was significantly (P < 0.05) different between the two groups. Diurnal changes in the 1-h mean ruminal pH were observed throughout the study in the HAY group; however, they were not observed at 0 and 1 weeks after weaning in the CON group. Moreover, the HAY group had significantly (P < 0.05) higher proportions of acetate and butyrate and lower proportion of propionate, and significantly (P < 0.05) lower ruminal acetate-to-propionate ratios were observed in the CON group. The ruminal bacterial diversity indices decreased after -1 week in both groups and increased at 0 and 1 weeks after weaning in the HAY and CON groups, respectively. From the 454 pyrosequencing analysis, significant differences (P < 0.05) were observed in the relative abundance of several phyla (Bacteroidetes, Actinobacteria, and Tenericutes) and one genus (Prevotella) between the two groups. From quantitative real-time PCR analysis, the HAY group had the higher copy numbers of cellulolytic bacteria (Ruminococcus flavefaciens and Ruminococcus albus) compared with the CON group. This study demonstrated that feeding of dietary forage alleviates subacute ruminal acidosis due to diurnal changes in ruminal pH. Furthermore, changes in ruminal pH affect the ruminal bacterial diversity and relative abundance, and these changes might have influenced the establishment of fermentative ruminal functions during weaning transition.
| S-EPMC5073099 | biostudies-literature
Project description:Direct transcriptomics comparison corroborated by functional and gene network analyses of pre-weaned bovine mammary parenchyma and fat pad shed light on potential cross-talk between these developing tissues. Transcriptomic characterization of mammary parenchyma and fat pad and their interaction is still incomplete. In the present experiment, the molecular epithelial-fat pad cross-talk during mammary development was assessed by transcript profiling and functional analyses. Background: Interactions between bovine mammary parenchyma (PAR) and fat pad (MFP) during neonatal tissue development are still not fully understood. It is thought that the MFP surrounding the parenchymal tissue exerts proliferative effects on the PAR through secretion of local modulators of growth induced by systemic hormones. Main objectives in the present study were to use bioinformatics tools to characterize differences in transcript profiles between mammary PAR and MFP from Holstein heifers at ca. 65 d age and uncover potential cross-talk between the two tissues via the analyses of signaling molecules (e.g., cytokines and growth factors) preferentially expressed in one tissue relative to the other. Results: Over 9,000 differentially expressed genes (DEG; False discovery rate ≤ 0.05) were found of which 1,478 had a ≥1.5-fold difference. Within these DEG in PAR vs. MFP (n = 736) we noted enrichment of functions related to cell cycle, structural organization, signaling, and DNA/RNA metabolism. Few canonical pathways were among DEG and were mostly involved in cell cycle and tissue organization (p53 signaling). Enriched among DEG more highly-expressed in MFP vs. PAR (n = 742) were genes involved in lipid metabolism, signaling, cell movement, and immune-related functions. Canonical pathways associated with metabolism (fatty acid metabolism) and signaling, particularly immune- (acute phase response) and metabolism-related (cAMP signaling), were significantly enriched. Network analysis uncovered a central role of MYC, TP53, and CTNNB1 in controlling expression of DEG highly-expressed in PAR vs. MFP. Similar analysis revealed a central role of PPARG, KLF2, EGR2, and EPAS1 in regulating expression of highly-expressed DEG in MFP vs. PAR. Analyses revealed putative crosstalk between tissues via differential expression of cytokines and growth factors highly-expressed in PAR (angiopoietin-1, osteopontin, interleukin-1β) or in MFP (adiponectin, interleukin-13, fibroblast growth factor-2, leptin) during bovine mammary development. Conclusions: We uncovered specific transcriptomic signatures characterizing MFP and PAR tissue. Not surprisingly, the expression profile of the MFP is characteristic of adipose tissue, and the one of PAR is characteristic of an epithelial tissue undergoing expansion and remodeling. Overall, our data highlighted a large degree of interaction between the two tissues and allowed envisaging a reciprocal influence in determining the biological features (and perhaps the fate) of each of the two tissues during this stage of development. This is strongly suggested by the potential effect that the signaling molecules released preferentially by PAR have on lipid metabolism-related pathways, which from our data was what most distinguished the MFP from PAR. Similarly, the cytokines and growth factors largely expressed in MFP potentially affect the pathways related to cell cycle, development, and proliferation in PAR, which our data highlighted as the main functions represented among the genes highly expressed in PAR vs. MFP. Based on the current analysis, the number of cytokines and growth factors that potentially are secreted by each tissue and affect molecules in the other underscores the concept of crosstalk. Ultimately, these bidirectional interactions might be required to coordinate mammary tissue development under normal circumstances or in response to environmental stimuli, such as nutrition.
2010-06-01 | GSE20363 | GEO
Project description:MicroRNAs (miRNAs) are short, non-coding RNAs, 21-23 nucleotides in length which are known to regulate biological processes that greatly impact immune system activity. The aim of the study was to compare the miRNA expression in non-infected (H) mammary gland parenchyma samples with that of glands infected with coagulase-positive staphylococci (CoPS) or coagulase-negative staphylococci (CoNS) using next-generation sequencing. The miRNA profile of the parenchyma was found to change during mastitis, with its profile depending on the type of pathogen. Comparing the CoPS and H groups, 256 known and 260 potentially new miRNAs were identified, including 32 that were differentially expressed (p???0.05), of which 27 were upregulated and 5 downregulated. Comparing the CoNS and H groups, 242 known and 171 new unique miRNAs were identified: 10 were upregulated (p???0.05), and 2 downregulated (p???0.05). In addition, comparing CoPS with H and CoNS with H, 5 Kyoto Encyclopedia of Genes and Genomes pathways were identified; in both comparisons, differentially-expressed miRNAs were associated with the bacterial invasion of epithelial cells and focal adhesion pathways. Four gene ontology terms were identified in each comparison, with 2 being common to both immune system processes and signal transduction. Our results indicate that miRNAs, especially miR-99 and miR-182, play an essential role in the epigenetic regulation of a range of cellular processes, including immunological systems bacterial growth in dendritic cells and disease pathogenesis (miR-99), DNA repair and tumor progression (miR-182).
| S-EPMC7937231 | biostudies-literature
Project description:The aim of this study was to investigate the effect of early calf-hood nutrition on the transcriptomic profile of subcutaneous adipose in Holstein-Friesian bulls and possible downstream effects on reproduction. Holstein Friesian bull calves with a mean (±S.D.) age and bodyweight of 19 (±8.2) days and 47.5 (±5.3) kg, respectively, were assigned to either a high (n=10) or low (n=10) plane of nutrition. Calves were fed in order to achieve an overall growth rate of 1.08 and 0.5 kg/day for the high and low plane of nutrition treatments, respectively. At 126 days of age, the bulls were euthanized using an intravenous overdose of sodium pentobarbitone and subcutaneous adipose tissue samples were harvested and RNAseq analysis was performed. At the end of the trial period, there were 745 genes differentially expressed in adipose tissue of bulls on the high plane of nutrition relative to those on the low plane of nutrition (P<0.05; FDR<0.05; fold change >2.0). Plane of nutrition altered the expression of genes involved in energy production and branched chain amino acid degradation. Plane of nutrition was also found to down regulate genes such as leptin and adiponectin which are known to effect reproductive function. This study identifies some of the molecular mechanisms regulated by feeding bulls a high plane of nutrition, which may be incorporated into future breeding programmes for artificial insemination centres.
2018-04-12 | GSE97674 | GEO