Comparison of bovine milk oligosaccharides in native North European cattle breeds

Little is known about the extent of variation and activity of naturally occurring milk glycosidases and their potential to degrade milk glycans. A multi-omics approach was used to investigate the relationship between glycosidases and important bioactive compounds such as free oligosaccharides and O-linked glycans in bovine milk. Using 4-methylumbelliferone (4-MU) assays activities of eight indigenous glycosidases were determined, and by mass spectrometry and 1H NMR spectroscopy various substrates and metabolite products were quantified in a subset of milk samples from eight native North European cattle breeds. The results showed a clear variation in glycosidase activities among the native breeds. Interestingly, negative correlations between some glycosidases including β-galactosidase, N-acetyl-β-d-glucosaminidase, certain oligosaccharide isomers as well as O-linked glycans of κ-casein were revealed. Further, a positive correlation was found for free fucose content and α-fucosidase activity (r = 0.37, p-value < 0.001) indicating cleavage of fucosylated glycans in milk at room temperature. The results obtained suggest that milk glycosidases might partially degrade valuable glycans, which would result in lower recovery of glycans and thus represent a loss for the dairy ingredients industry if these activities are pronounced.

Download Full-text

On the origin and diversification of Podolian cattle breeds: testing scenarios of European colonization using genome-wide SNP data

Genetics Selection Evolution ◽

10.1186/s12711-021-00639-w ◽

2021 ◽

Vol 53 (1) ◽

Author(s):

Gabriele Senczuk ◽

Salvatore Mastrangelo ◽

Paolo Ajmone-Marsan ◽

Zsolt Becskei ◽

Paolo Colangelo ◽

...

Keyword(s):

Genetic Diversity ◽

Diversity Indices ◽

Melting Pot ◽

Cattle Breeds ◽

Snp Data ◽

Early Migration ◽

Genome Wide ◽

European Colonization ◽

Approximate Bayesian ◽

European Cattle

Abstract Background During the Neolithic expansion, cattle accompanied humans and spread from their domestication centres to colonize the ancient world. In addition, European cattle occasionally intermingled with both indicine cattle and local aurochs resulting in an exclusive pattern of genetic diversity. Among the most ancient European cattle are breeds that belong to the so-called Podolian trunk, the history of which is still not well established. Here, we used genome-wide single nucleotide polymorphism (SNP) data on 806 individuals belonging to 36 breeds to reconstruct the origin and diversification of Podolian cattle and to provide a reliable scenario of the European colonization, through an approximate Bayesian computation random forest (ABC-RF) approach. Results Our results indicate that European Podolian cattle display higher values of genetic diversity indices than both African taurine and Asian indicine breeds. Clustering analyses show that Podolian breeds share close genomic relationships, which suggests a likely common genetic ancestry. Among the simulated and tested scenarios of the colonization of Europe from taurine cattle, the greatest support was obtained for the model assuming at least two waves of diffusion. Time estimates are in line with an early migration from the domestication centre of non-Podolian taurine breeds followed by a secondary migration of Podolian breeds. The best fitting model also suggests that the Italian Podolian breeds are the result of admixture between different genomic pools. Conclusions This comprehensive dataset that includes most of the autochthonous cattle breeds belonging to the so-called Podolian trunk allowed us not only to shed light onto the origin and diversification of this group of cattle, but also to gain new insights into the diffusion of European cattle. The most well-supported scenario of colonization points to two main waves of migrations: with one that occurred alongside with the Neolithic human expansion and gave rise to the non-Podolian taurine breeds, and a more recent one that favoured the diffusion of European Podolian. In this process, we highlight the importance of both the Mediterranean and Danube routes in promoting European cattle colonization. Moreover, we identified admixture as a driver of diversification in Italy, which could represent a melting pot for Podolian cattle.

Download Full-text

Genome‐wide SNP analysis clearly distinguished the Belarusian Red cattle from other European cattle breeds

Animal Genetics ◽

10.1111/age.13102 ◽

2021 ◽

Author(s):

N. A. Zinovieva ◽

I. P. Sheiko ◽

A. V. Dotsev ◽

R. I. Sheiko ◽

M. E. Mikhailova ◽

...

Keyword(s):

Snp Analysis ◽

Cattle Breeds ◽

Genome Wide ◽

European Cattle

Download Full-text

Bovine Milk Oligosaccharides with Sialyllactose for Preterm Piglets

Nutrients ◽

10.3390/nu10101489 ◽

2018 ◽

Vol 10 (10) ◽

pp. 1489 ◽

Cited By ~ 4

Author(s):

Karina Obelitz-Ryom ◽

Amalie Rendboe ◽

Duc Nguyen ◽

Silvia Rudloff ◽

Anne Brandt ◽

...

Keyword(s):

Bacterial Colonization ◽

Bovine Milk ◽

Protective Effects ◽

Gut Development ◽

Artificial Rearing ◽

Milk Oligosaccharides ◽

Term Infants ◽

Brain Functions ◽

Near Term ◽

Dietary Treatments

Oligosaccharides support gut development and bacterial colonization in term infants, but it is unknown if they benefit preterm infants. Using preterm pigs, we investigated effects of bovine milk supplements enriched with oligosaccharides to improve gut development and colonization. Caesarean-delivered preterm pigs (n = 57) were reared for 19 days. The pigs were fed bovine milk supplemented with an oligosaccharide-enriched whey containing sialyllactose, or a heterogeneous oligosaccharide ingredient. To evaluate the influence of artificial rearing, near-term, vaginally born pigs raised by their sow (n = 12) were compared with artificially reared, caesarean-delivered near-term pigs (n = 14). In preterm pigs, the clinical outcome, gut function, gut microbiota, and systemic immunity were similar among dietary treatments. Natural rearing increased growth rates, gut functions, colon short chain fatty acid concentrations and bacterial diversity, relative to artificial rearing. In conclusion, supplements with bovine milk oligosaccharides were well tolerated, but did not improve gut maturation or clinical outcomes in artificially reared preterm piglets. Immaturity at birth, coupled with artificial rearing, may render the neonate unresponsive to the gut-protective effects of milk oligosaccharides. Whether bovine milk oligosaccharides may affect other endpoints (e.g., brain functions) in conditions of immaturity remains to be investigated.

Download Full-text

Tolerability and safety of the intake of bovine milk oligosaccharides extracted from cheese whey in healthy human adults

Journal of Nutritional Science ◽

10.1017/jns.2017.2 ◽

2017 ◽

Vol 6 ◽

Cited By ~ 10

Author(s):

Jennifer T. Smilowitz ◽

Danielle G. Lemay ◽

Karen M. Kalanetra ◽

Elizabeth L. Chin ◽

Angela M. Zivkovic ◽

...

Keyword(s):

Bovine Milk ◽

Evolutionary Relationship ◽

Microbial Metabolism ◽

Stool Consistency ◽

Placebo Control ◽

Resonance Spectroscopy ◽

Faecal Microbiota ◽

Milk Oligosaccharides ◽

Healthy Human ◽

Bacterial Populations

AbstractMechanistic research suggests a unique evolutionary relationship between complex milk oligosaccharides and cognate bifidobacteria enriched in breast-fed infants. Bovine milk oligosaccharides (BMO) were recently identified as structurally and functionally similar to human milk oligosaccharides. The present single-blind three-way crossover study is the first to determine the safety and tolerability of BMO consumption by healthy human participants (n 12) and its effects on faecal microbiota and microbial metabolism. Participants consumed each supplement (placebo-control; low- and high-BMO doses) for eleven consecutive days, followed by a 2-week washout period prior to initiating the next supplement arm. Low and high BMO doses were consumed as 25 and 35 % of each individual's daily fibre intake, respectively. Safety and tolerability were measured using standardised questionnaires on gut and stomach discomfort and stool consistency. Faecal extracts were profiled for bacterial populations by next-generation sequencing (NGS) and bifidobacteria presence was confirmed using quantitative PCR. Urine was analysed for changes in microbial metabolism using nuclear magnetic resonance spectroscopy (1H-NMR). Consumption of both the low and high BMO doses was well tolerated and did not change stool consistency from baseline. Multivariate analysis of the NGS results demonstrated no change in faecal microbiota phyla among the placebo-control and BMO supplement groups. In conclusion, BMO supplementation was well tolerated in healthy adults and has the potential to shift faecal microbiota toward beneficial strains as part of a synbiotic treatment with probiotic cultures that selectively metabolise oligosaccharides.

Download Full-text