Short communication: Genetic study of methane production predicted from milk fat composition in dairy cows

被引：30

作者：

van Engelen, S. ^{[1
,2
]}

Bovenhuis, H. ^{[2
]}

Dijkstra, J. ^{[3
]}

van Arendonk, J. A. M. ^{[1
,2
]}

Visker, M. H. R. W. ^{[1
,2
]}

机构：

[1] TI Food & Nutr, NL-6700 AN Wageningen, Netherlands

[2] Wageningen Univ, Anim Breeding & Genom Ctr, NL-6700 AH Wageningen, Netherlands

[3] Wageningen Univ, Anim Nutr Grp, NL-6700 AH Wageningen, Netherlands

来源：

JOURNAL OF DAIRY SCIENCE | 2015年 / 98卷 / 11期

关键词：

predicted methane yield; milk fatty acid; dairy cow; ENTERIC METHANE; ACIDS; PARAMETERS; EMISSIONS; MITIGATION;

D O I：

10.3168/jds.2014-8989

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Dairy cows produce enteric methane, a greenhouse gas with 25 times the global warming potential of CO2. Breeding could make a permanent, cumulative, and long-term contribution to methane reduction. Due to a lack of accurate, repeatable, individual methane measurements needed for breeding, indicators of methane production based on milk fatty acids have been proposed. The aim of the present study was to quantify the genetic variation for predicted methane yields. The milk fat composition of 1,905 first-lactation Dutch Holstein-Friesian cows was used to investigate 3 different predicted methane yields (g/kg of DMI): Methane1, Methane2, and Methane3. Methane1 was based on the milk fat proportions of C17:0anteiso, C18:1 trans-10+11, C18:1 cis-11, and C18:1 cis-13 (R-2 = 0.73). Methane2 was based on C4:0, C18:0, C18:1 trans-10+11, and C18:1 cis-11 (R-2 = 0.70). Methane3 was based on C4:0, C6:0, and C18:1 trans-10+11 (R-2 = 0.63). Predicted methane yields were demonstrated to be heritable traits, with heritabilities between 0.12 and 0.44. Breeding can, thus, be used to decrease methane production predicted based on milk fatty acids.

引用

页码：8223 / 8226

页数：4

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