Go with the flow—biology and genetics of the lactation cycle

EM Strucken, YCSM Laurenson… - Frontiers in genetics, 2015 - frontiersin.org
Lactation is a dynamic process, which evolved to meet dietary demands of growing
offspring. At the same time, the mother's metabolism changes to meet the high requirements …

Mathematical modeling of lactation curves: A review of parametric models

M Bouallegue, N M'Hamdi - Lactation in farm animals-biology …, 2020 - books.google.com
The mathematical representation of milk production against time represents one of the most
successful applications of mathematical modeling in agriculture. Models provide summary …

Factors affecting the shape of lactation curves of Holstein cows from the Balikesir province of Turkey

M Tekerli, Z Akinci, I Dogan, A Akcan - Journal of Dairy Science, 2000 - Elsevier
The shape of the lactation curve for 475 Turkish Holsteins was estimated by fitting a gamma
function to daily milk yields from monthly recording of 754 lactations. Lactation curve traits …

Economic aspects of persistency of lactation in dairy cattle

JCM Dekkers, JH Ten Hag, A Weersink - Livestock Production Science, 1998 - Elsevier
Persistency of lactation is a trait of economic importance in dairy cattle because of its impact
on fertility, health, and feed costs. When level of production is based on a 305-day lactation …

Genetic parameters for milk production and persistency for Danish Holsteins estimated in random regression models using REML

JH Jakobsen, P Madsen, J Jensen, J Pedersen… - Journal of Dairy …, 2002 - Elsevier
(Co) variance components for milk, fat, and protein yield of 8075 first-parity Danish Holsteins
(DH) were estimated in random regression models by REML. For all analyses, the fixed part …

[HTML][HTML] Genetic relationships between persistency and reproductive performance in first-lactation Canadian Holsteins

BL Muir, J Fatehi, LR Schaeffer - Journal of dairy science, 2004 - Elsevier
The main objective of this study was to estimate genetic relationships between lactation
persistency and reproductive performance in first lactation. Relationships with day in milk at …

Genetic and environmental relationship among calving interval, survival, persistency of milk yield and somatic cell count in dairy cattle

M Haile-Mariam, PJ Bowman, ME Goddard - Livestock production science, 2003 - Elsevier
Data from Australian Holstein–Friesian cattle on calving interval (CI), survival (Surv), mean
milk yield (MY), mean fat yield (FY), mean loge somatic cell count (LnSCC) and the …

Genetic evaluation of dairy cattle using test-day models

J Jensen - Journal of Dairy Science, 2001 - Elsevier
Recently there has been considerable interest in modeling individual test-day records (TDR)
for genetic evaluation of dairy cattle as a replacement for the traditional use of estimated …

The effects of breeding and selection on lactation in dairy cattle

JB Cole, BO Makanjuola, CM Rochus… - Animal …, 2023 - academic.oup.com
• Genetic selection can be used to alter the shape of the lactation curve, manufacturing
properties of milk, and composition associated with human health.• Mid-infrared spectral …

[HTML][HTML] Diversity of dairy goat lactation curves in France

M Arnal, C Robert-Granié, H Larroque - Journal of Dairy Science, 2018 - Elsevier
ABSTRACT A high level of production at the peak of lactation may be associated with animal
health disorders, high feeding costs, and reduced milk supply throughout the year. The …