Tag: Milk production
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Composition of Rumen Bacterial Community in Dairy Cows With Different Levels of Somatic Cell Counts
This research suggests that specific rumen microbes are altered in cows with high SCCs. Cows with high SCCs showed lowered milk and component yield and rumen volatile fatty acids concentration — but these cows also had higher rumen bacterial diversity compared to low SCC cows.
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Long-term effects of postpartum clinical disease on milk production, reproduction, and culling of dairy cows
Read more about how researchers evaluated 7,500 lactating cows to evaluate the long-term effects of disease during the early postpartum period.
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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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Effect of heat stress during early, late, and entire dry period on dairy cattle
This study from the University of Florida, Gainesville, found that cooling for the entire dry period increased milk yield up to 30 weeks into lactation. It showed that heat stress at any time during the dry period compromises performance of cows after calving.
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Claw disorders in dairy cattle: Effects on production, welfare and farm economics with possible prevention methods
Laminitis-related and infectious claw disorders often cause a decrease in milk yield. Claw disorders are also responsible for reproduction problems and can reduce feed intake. This study examines the most efficient measures to prevent those losses — and improve animal welfare.
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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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Metagenomic assessment of the functional potential of the rumen microbiome in Holstein dairy cows
Milk yields are different between the first and subsequent lactations. This fact led researchers to investigate if there was also a difference in rumen microbiota.
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Associations of feeding behavior and milk production in dairy cows
A new multi-study analysis on the relationship between feeding behavior and lactating dairy cow performance shows that milk yield is increased by 0.02 kg per minute of rumination and confirms that milk fat is related to rumination time.
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Reference -
Sauvant D. and Peyraud J. L. 2010.
FRENCH Calculs de ration et évaluation du risque d’acidose. INRA Prod. Anim. 23: 333-342.
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Reference -
Britt J. S., Thomas R. C., Speer N. C., and Hall M. B. 2003.
Efficiency of Converting Nutrient Dry Matter to Milk in Holstein Herds. J. Dairy Sci. 86:3796–3801.