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The Research Column

by Heinz Meissner

Click on any of the publications below to read more about the specific topic:

 

Title Date Discipline Extract Keywords
Effect of injectable vitamin E on incidence of retained fetal membranes and reproductive performance of dairy cows.

Discipline: reproduction; Key words: reproduction, retained fetal membranes,

A comparison of individual cow versus group concentrate allocation strategies on dry matter intake, milk production, tissue changes, and fertility of Holstein-Friesian cows offered a grass silage diet.

Discipline: nutrition/feeding; Key words: concentrate allocation strategy,

THE EFFECT OF HIGH SCC LEVELS ON MILK AND CHEESE QUALITY

Discipline: mastitis; Key words: somatic cell counts, pasteurized fluid milk quality, shelf-life study, cheese, total solids, protein. 
WATER USE ON NON-IRRIGATED PASTURE-BASED DAIRY FARMS

Discipline: pasture/grazing; Key words: water use, water efficiency, leakage, milking parlour, pasture systems
Milk is good for you.

Discipline: dairy and health; Key words: milk, nutraceuticals, probiotics, gut microbiome, immunomodulatory activities, soluble peptides.
Water use on non-irrigated pasture-based dairy farms: Combining detailed monitoring and modelling to set benchmarks.
Environment

Water use on the dairy farm is important to know how much should be provided for the animals, for cleaning purposes, for irrigation and general use. It is normally a surprisingly high figure which therefore should be well-managed. In intensively managed, confinement dairy systems water use because of relative ease of determination has been widely studied, but few reports exist regarding water use on pasture-based dairy farms. The objective of the study by Dr C.D.

 water use, water efficiency, leakage, milking parlour, pasture systems
Meta-analysis to predict the effects of metabolizable amino acids on dairy cattle performance.

Discipline: supplementation; Key words: amino acids, milk protein, meta-analysis, immune-metabolism, methionine, transition period. 
Milk progesterone on day 5 following insemination in the dairy cow: associated metabolic variables and reproductive consequences.

Discipline: reproduction; Key words:conception rate, dairy cow, leptin, metabolic variables, milk progesterone.

 
Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows.

Reducing on-farm storage and retail waste should increase agricultural resource efficiency and, thus, food availability. One way of reducing waste and increase efficiency could be to reduce inclusion of human-edible products such as cereal grain (e.g. maize, wheat, oats etc) and soybean meal in the diets fed to dairy cows in intensive production systems.
Intravenous calcium infusion in a calving protocol disrupts calcium homeostasis compared with an oral calcium supplement.

Serum total Ca (tCa) and whole-blood ionized Ca (iCa) were monitored in 24 multi-lactation Holstein cows after parturition. Pre-calving diets were formulated with a positive dietary cation-anion difference of 172 mEq per kg of DM and contained 4.1 g of Ca per kg of DM. At calving, cows were blocked by calving sequence and blood Ca status as either normo-calcaemic (cut-off threshold of iCa equal or more than 1.10 mmol per L) or hypocalcaemic (cut-off threshold of iCa less than 1.10 mmol per L).