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Economic consequences of dairy crossbreeding in conventional and organic herds in Sweden

Clasen, Julie and Fikse, Freddy and Kargo, M. and Rydhmer, Lotta and Strandberg, Erling and Ostergaard, S. (2020). Economic consequences of dairy crossbreeding in conventional and organic herds in Sweden. Journal of Dairy Science. 103 , 514-528
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Abstract

This study simulated the consequences of crossbreeding between Swedish Holstein and Swedish Red on herd dynamics and herd profitability under Swedish conditions. Two base herds were simulated using a stochastic herd simulation model, SimHerd Crossbred. The herds reflected average Swedish conventional and organic herds having purebred Swedish Holstein. For each base herd, 3 breeding strategies were simulated: purebreeding, 2-breed terminal crossbreeding, and 2-breed rotational crossbreeding. The terminal crossbreeding strategy implied having a nucleus of Swedish Holstein and a proportion of F-1 Swedish Red x Swedish Holstein crossbred cows within the same herd. The crossbreds in this herd did not produce replacement heifers but exclusively beef x dairy crass calves. Beef semen was also used in the pure-breeding (10-20% in cows) and the rotational crossbreeding (40% in cows) strategies to retain a limited surplus of replacement heifers. To ensure an adequate number of crossbreds in the terminal crossbreeding strategy, X-sorted sexed semen was used for insemination in all the purebred heifers. The outcome was 67% purebred and 31% F-1 crossbreds in the herd. In addition, 31% heterosis was expressed compared with 67% heterosis expressed using a 2-breed rotational crossbreeding strategy. Compared with the pure-breeding strategy, crossbreeding increased the annual contribution margin per cow by (sic)20 to (sic)59, with the rotational crossbreeding strategy creating the largest profitability. The increased profitability was mainly due to improved functional traits, especially fertility. For the conventional production system, the replacement rate was 39.3% in the pure-breeding strategy and decreased to 35.8 and 30.1% in the terminal and rotational crossbreeding strategy, respectively. Similar changes happened in the organic production system. Additionally, the crossbreeding strategies earned (sic)22 to (sic)42 more annually per cow from selling live calves for slaughter due to the extended use of beef semen. Milk production was similar between pure-breeding and terminal crossbreeding, and only decreased 1 to 2% in rotational crossbreeding. These results show that crossbreeding between Swedish Holstein and Swedish Red can be profitable in both conventional and organic Swedish herds using the strategies we have simulated. However, some aspects remain to be investigated, such as the economically optimal breeding strategy, genetic improvement, and transition strategies.

Authors/Creators:Clasen, Julie and Fikse, Freddy and Kargo, M. and Rydhmer, Lotta and Strandberg, Erling and Ostergaard, S.
Title:Economic consequences of dairy crossbreeding in conventional and organic herds in Sweden
Series Name/Journal:Journal of Dairy Science
Year of publishing :2020
Volume:103
Page range:514-528
Number of Pages:15
Publisher:ELSEVIER SCIENCE INC
ISSN:0022-0302
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Keywords:crossbreeding, herd management, herd profitability
URN:NBN:urn:nbn:se:slu:epsilon-p-103847
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-103847
Additional ID:
Type of IDID
DOI10.3168/jds.2019-16958
Web of Science (WoS)000504824000046
ID Code:21740
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Breeding and Genetics
Deposited By: SLUpub Connector
Deposited On:26 Jan 2021 08:43
Metadata Last Modified:26 Jan 2021 08:51

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