Body mobilization of high-yielding dairy cows is intense after calving and can generate health and fertility troubles. This study aimed to estimate the genetic correlation between body weight loss during the five first weeks of lactation (BWL) and daily milk production (MY24a) in first (L1) and second (L2) lactations Holstein cows. The dataset included 859,020 MY24a and 570,651 body weight (BW) daily phenotypes from 3,989 L1 cows, and 665,361 MY24a and 449,449 BW daily phenotypes from 3,060 L2 cows, recorded in 36 French commercial farms equipped with milking robots including an automatic weighing platform. The genetic parameters of BW and MY24a in L1 and L2 were estimated using a 4-trait random regression model. Genetic correlations between BWL and MY24a ranged from -0.26 to 0.05 in L1, and varied from -0.11 to 0.10 in L2, suggesting that selecting to reduce early body mobilization while maintaining milk production is possible.
Proceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP)
Technical and species orientated innovations in animal breeding, and contribution of genetics to solving societal challenges
EditorsR.F. Veerkamp and Y. de Haas
Published: 2022 Pages: 3364
eISBN: 978-90-8686-940-4
Book Type: Conference Proceedings
52. Genetic relationships between weight loss in early lactation and daily milk production until 305 days in Holstein cows
T. Tribout Related information
1Université Paris Saclay, INRAE, AgroParisTech, GABI, 78350 Jouy-en-Josas, France.
*Corresponding author: thierry. tribout@inrae. fr
, S. Minéry Related information*Corresponding author: thierry.
2Institut de l’Elevage, 75012 Paris, France.
, R. Vallée Related information2Institut de l’Elevage, 75012 Paris, France.
, S. Saille Related information3INNOVAL, CS 10040, 35538 Noyal sur Vilaine, France.
, D. Saunier Related information4FCEL, France Conseil Elevage, 75009 Paris, France.
, V. Ducrocq Related information1Université Paris Saclay, INRAE, AgroParisTech, GABI, 78350 Jouy-en-Josas, France.
, P. Faverdin Related information5INRAE, AgroCampus Ouest, PEGASE, 35590 Saint-Gilles, France.
, D. Boichard Related information1Université Paris Saclay, INRAE, AgroParisTech, GABI, 78350 Jouy-en-Josas, France.
Pages: 256 - 259
Published Online: February 09, 2023
Abstract: