Results 11 to 20 of about 4,714,251 (292)

Effects of pregnancy on daily milk yield of Holstein–Friesian dairy cattle

Livestock Production Science, 2004
First, second and third lactation curves of 21,885 first lactation dairy cows were allowed to vary depending on the months in milk at which the cow became pregnant. The curves were modelled using a 4th degree polynomial of days in milk. In the models for second and third lactation daily yield, days open in the previous lactation was included as a ...
Brotherstone, S., Thompson, R., White, I. M. S.   +2 more
openaire   +2 more sources

Bias and Accuracy of Single Milking Testing Schemes to Estimate Daily and Lactation Milk Yield

Journal of Dairy Science, 1995
This study evaluated the adequacy of an alternate a.m.-p.m. testing scheme for milk yield in comparison with the official test method based on weighing two milkings within 24 h. A total of 88,558 single test day milking weights from 15,670 Italian Friesian cows in 610 herds in the province of Milano (Italy) were collected between September 1991 and ...
CASSANDRO, MARTINO, CARNIER, PAOLO, GALLO, LUIGI, MANTOVANI, ROBERTO, CONTIERO, BARBARA, BITTANTE, GIOVANNI, JANSEN GB   +6 more
openaire   +3 more sources

ESTIMATION OF DAILY AND LACTATION MILK YIELD FROM ALTERNATIVE MILK RECORDING SCHEME [PDF]

Stočarstvo : Časopis za unapređenje stočarstva, 2008
Statistical methods were to developed and evaluated for the estimation of daily and 305-day lactation milk yield of dairy cattle from alternative milk recording scheme. Data included 7,815 individual test-day milk yield records collected according to the A4 milk recording method on 769 cows reared on 15 family farms.
Jovanovac, Sonja, Gantner, Vesna, Kuterovac, K., Klopčič, Marija, Cassandro, M.   +4 more
core   +7 more sources

A Forage Allowance by Forage Type Interaction Impacts the Daily Milk Yield of Early Lactation Dairy Cows. [PDF]

Animals (Basel), 2023
We tested for a forage allowance effect on the milk yield of early lactation dairy cow herds grazing swards sown with perennial ryegrass (Lolium perenne L.), white clover (Trifolium repens L.) and plantain (Plantago lanceolata L.) relative to perennial ...
Langworthy AD, Freeman MJ, Hills JL, McLaren DK, Rawnsley RP, Pembleton KG.   +5 more
europepmc   +2 more sources

Effects of the timing of protein infusion on the daily rhythms of milk synthesis and plasma hormones and metabolites in dairy cows

Journal of Dairy Science, 2023
: Milk synthesis exhibits a daily rhythm that is modified by the timing of feed intake. However, it is unknown how specific nutrients entrain this daily rhythm.
Isaac J. Salfer, Cesar I. Matamoros, P.A. Bartell, Kevin J. Harvatine   +3 more
doaj   +1 more source

Skin fold thickness and its association with milk production performance in Sahiwal cows

Indian Journal of Animal Sciences, 2021
The present experiment was conducted at Bull Mother Experimental Farm (BMEF), College of Veterinary Science and Animal Husbandry, Anjora to study the relationship between skin thickness and milk yield of Sahiwal cows.
SWETA BANJARE, AJIT KUMAR SANTRA, KAISER PARVEEN, SHARAD MISHRA, NISHIMA SINGH   +4 more
doaj   +1 more source

Can meteorological data improve the short-term prediction of individual milk yield in dairy cows?

Journal of Dairy Science, 2023
: Many farms document daily milk yields of individual cows because these are a good indicator of cow well-being. It is established that extreme meteorological conditions influence the milk yields by causing heat and cold stress, whereas less is known ...
L. Gasser, F. Perez Cruz, M. Cockburn
doaj   +1 more source

The Effect of Neighbouring Cows within the Milking Parlour on a Cow's Daily Milk Yield [PDF]

Livestock Science
Social interactions in a dairy herd are essential to maintain the herd's structure. Disturbances in social relationships can be stressful and may impact both animal welfare and production. Pathological and physiological changes, biological variations, but also the social environment induced by surrounding cows can affect variation in the daily milk ...
Ida Hansson, Hector Marina, Freddy Fikse, Per Peetz Nielsen, Lars Rönnegård   +4 more
openaire   +3 more sources

Predicting bovine daily milk yield by leveraging genomic breeding values

Computers and Electronics in Agriculture, 2023
The main goal of this work, conducted on a herd of 502 Holstein cows situated in Italy, is to propose a machine learning-based approach to forecast the individual bovine daily milk production by explicitly leveraging genotypic information. As part of our study, we also evaluated the importance in the prediction of genotypic and phenotypic variables ...
Vergani, Andrea Mario, Bagnato, Alessandro, Masseroli, Marco   +2 more
openaire   +2 more sources

The Effect of Thermal Environment on Daily Milk Yield of Dairy Cows [PDF]

Macedonian Veterinary Review, 2016
Abstract The primary objective of this research was to evaluate the impact of environmental air temperatures on the milk production of dairy cows. Therefore, the experiment was carried out at the height of summer (from 15th of June to 15th of September) in three small family dairy farms and one commercial dairy farm.
Trajchev, Metodija, Nakov, Dimitar, Andonov, Sreten   +2 more
openaire   +4 more sources