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Full-lactation performance of multiparous dairy cows with differing residual feed intake

Karlsson, Johanna and Danielsson, Rebecca and Åkerlind, Maria and Holtenius, Kjell (2022). Full-lactation performance of multiparous dairy cows with differing residual feed intake. PLoS ONE. 17 :8 , e0273420
[Research article]

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Abstract

Residual feed intake (RFI) is an efficiency trait underpinning profitability and environmental sustainability in dairy production. This study compared performance during a complete lactation of 36 multiparous dairy cows divided into three equal-sized groups with high (HRFI), intermediate (IRFI) or low RFI (LRFI). Residual feed intake was determined by two different equations. Residual feed intake according to the NorFor system was calculated as (RFINorFor) = (NEintake)–(NEmaintenance + NEgestation + NEmilk—NEmobilisation + NEdeposition). Residual feed intake according to the USA National Research Council (NRC) (RFINRC) was calculated as: RFI = DMI − predicted DMI where predicteds DMI = [(0.372× ECM)+(0.0968×BW0.75)]×(1−e−0.192×(DIM/7+3.67)). Cows in the HRFINorFor group showed higher daily CH4 production, CH4/ECM and CH4 yield (g/kg DMI) than IRFINorFor and LRFINorFor cows. Cows characterized by high efficiency (LRFINorFor) according to the NorFor system had lower body weight. Dry matter intake and apparent dry matter digestibility were not affected by efficiency group but milk yield was lower in the low efficiency, HRFINorFor, group. Cows characterized by high efficiency according to the NRC system (LRFINRC) had lower dry matter intake while yield of CH4 was higher. Daily CH4 production and CH4 g/kg ECM did not differ between RFINRC groups. Dairy cows characterized by high efficiency (both LRFINorFor and LRFINRC cows) over a complete lactation mobilized more of their body reserves in early lactation as well as during the complete lactation. The results also indicated great phenotypic variation in RFI between different stages the lactation.

Authors/Creators:Karlsson, Johanna and Danielsson, Rebecca and Åkerlind, Maria and Holtenius, Kjell
Title:Full-lactation performance of multiparous dairy cows with differing residual feed intake
Series Name/Journal:PLoS ONE
Year of publishing :2022
Volume:17
Number:8
Article number:e0273420
Number of Pages:13
ISSN:1932-6203
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 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:Lactation, Milk, Insulin, Glucose, Blood plasma, Body weight, Computer software, Fatty acids
URN:NBN:urn:nbn:se:slu:epsilon-p-118638
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118638
Additional ID:
Type of IDID
DOI10.1371/journal.pone.0273420
ID Code:28620
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: SLUpub Connector
Deposited On:29 Aug 2022 09:25
Metadata Last Modified:29 Aug 2022 09:31

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