How increased heifer growth rate and reduced dairy cow replacement rate can improve farm economy and reduce greenhouse gas emissions - a win to win situation?

التفاصيل البيبلوغرافية
العنوان:	How increased heifer growth rate and reduced dairy cow replacement rate can improve farm economy and reduce greenhouse gas emissions - a win to win situation?
المؤلفون:	Sommerseth JK; Department of Animal and Agricultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, PO Box 5003, NO-1432 Ås, Norway. Electronic address: jon.kristian.sommerseth@tine.no., Shrestha S; Land Economy, Environment & Society, Scotland's Rural College, Peter Wilson Building, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK., MacLeod M; Land Economy, Environment & Society, Scotland's Rural College, Peter Wilson Building, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK., Hegrenes A; Norwegian Institute of Bioeconomy Research, PO Box 115, NO-1431 Ås, Norway., Hansen BG; Tine SA, NO-1431 Ås, Norway., Salte R; Department of Animal and Agricultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, PO Box 5003, NO-1432 Ås, Norway.
المصدر:	Animal : an international journal of animal bioscience [Animal] 2024 Sep; Vol. 18 (9), pp. 101294. Date of Electronic Publication: 2024 Aug 08.
نوع المنشور:	Journal Article
اللغة:	English
بيانات الدورية:	Publisher: Elsevier Country of Publication: England NLM ID: 101303270 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1751-732X (Electronic) Linking ISSN: 17517311 NLM ISO Abbreviation: Animal Subsets: MEDLINE
أسماء مطبوعة:	Publication: 2021- : [London] : Elsevier Original Publication: Cambridge, England : Cambridge University Press
مواضيع طبية MeSH:	Dairying/methods , Dairying/economics , Greenhouse Gases/analysis , Farms, Animals ; Cattle/growth & development ; Female ; Norway ; Animal Husbandry/methods ; Animal Husbandry/economics
مستخلص:	Rearing of replacement heifers makes up a significant part of the total costs in dairy farming. Nevertheless, the average age at first calving for dairy heifers still stays well above 2 years in many countries. This study examined the economic and environmental impacts of increased heifer growth rates and reduced replacement rates on Norwegian dairy farms. The current average growth rate in Norway (baseline scenario) was compared to an accelerated growth rate scenario. Within each of the two growth rate scenarios, we compared three different cow replacement rates. A farm account survey dataset containing physical and economic data on 311 Norwegian farms was clustered into three farm groups: small, medium, and large. To model economic consequences, we used the whole-farm linear programming model ScotFarm. A life cycle analysis model was used to model the environmental impacts of the baseline scenario and an accelerated growth rate scenario on the three farm groups. Accelerated heifer growth rate had a positive effect (14-28%) on farm annual gross margin depending on farm size. While accelerated growth rate resulted in only minor reductions in total emissions at farm level compared to the baseline scenario, reduced replacement rate lowered total farm level emissions by up to 8%, and emissions per unit of output by up to 6%. We conclude that an accelerated heifer growth rate scenario could potentially increase farm gross margin by some 14-28% compared with a baseline growth rate scenario. Reducing the replacement rate would be more efficient to reduce farm-level greenhouse gas emissions. (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
فهرسة مساهمة:	Keywords: Accelerated heifer growth; Farm level modelling; Greenhouse gas emissions; Gross margin; Replacement costs
المشرفين على المادة:	0 (Greenhouse Gases)
تواريخ الأحداث:	Date Created: 20240903 Date Completed: 20240920 Latest Revision: 20240920
رمز التحديث:	20240920
DOI:	10.1016/j.animal.2024.101294
PMID:	39226780
قاعدة البيانات:	MEDLINE

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تدمد:	1751-732X
DOI:	10.1016/j.animal.2024.101294