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Late gestation heat stress in dairy cows: Effects on dam and daughter
Heat stress during the dry period has dramatic negative impacts on the cow and her offspring. Cows that experience heat stress in late gestation make less milk and are at greater risk of disease and nutritional issues.
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Gene expression in bovine rumen epithelium during weaning identifies molecular regulators of rumen development and growth
In this study, molecular markers of rumen development and gene networks regulating the rumen epithelium were identified.
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Assessment of ruminal fluid pH evolution across the weaning period in Holstein calves under field conditions
A study from Aristotle University in Greece showed the ruminal pH of weaned calves is related to herd-level management of the pre-weaning period and weaning protocols.
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Relationships between blood metabolites and energy balance in early lactation dairy cows
An altered metabolic state is common in high-yielding dairy cows during early lactation. A study in the United Kingdom set out to determine if blood metabolites — such as beta-hydroxy butyrate (BHB), glucose and non-esterified fatty acids (NEFA) — could be correlated to energy status (EB).
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Calf rumen development may be linked to feed processing
Calves undergo a process of rumen development before, during and after weaning. Researchers are still seeking to understand the rumen microbiome development that happens. Click to read the whole study.
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In utero exposure to thermal stress has long-term effects on mammary gland microstructure and function in dairy cattle
Milk yield is significantly lower in first-lactation heifers that experienced fetal heat stress. This study examines how the development of mammary glands are affected by heat stress during gestation.
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Weaning age affects growth, feed intake, gastrointestinal development, and behavior in Holstein calves fed an elevated plane of nutrition during the preweaning stage
This study investigates the relationship between the age of weaning and feed intake — and its influence on growth, gastrointestinal development and behavioral indicators in preweaning dairy calves.
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Development of Ruminal and Fecal Microbiomes Are Affected by Weaning But Not Weaning Strategy in Dairy Calves
This research analyzes the pre- and post-weaning ruminal and fecal microbiomes of Holstein dairy calves exposed to either gradual or abrupt weaning strategies.
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Presence of Selected Methanogens, Fibrolytic Bacteria, and Proteobacteria in the Gastrointestinal Tract of Neonatal Dairy Calves from Birth to 72 Hours
This article provides insight into rumen microbial colonization, which is essential for calves’ future growth and digestive health.
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Transformation of the young calf’s gastrointestinal tract
During weaning, ruminal adaptation and nutrient flow to the lower gastrointestinal tract dramatically change and the gut structure, permeability and function are altered.
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