干旱区生态环境知识资源中心(Arid): Realized genetic selection differentials in Canadian Ayrshire, Jersey, and Brown Swiss dairy cattle populations

Arid

DOI	10.3168/jds.2019-17938
	Realized genetic selection differentials in Canadian Ayrshire, Jersey, and Brown Swiss dairy cattle populations
	Hagan, B. A.; Moro-Mendez, J.; Cue, R., I
通讯作者	Hagan, BA (corresponding author), McGill Univ, Anim Sci Dept, Ste Anne Bellevue, Montreal, PQ H9X 3V9, Canada. ; Hagan, BA (corresponding author), Council Sci & Ind Res Anim Res Inst, Accra 00233, Ghana.
来源期刊	JOURNAL OF DAIRY SCIENCE
ISSN	0022-0302
EISSN	1525-3198
出版年	2021
卷号	104 期号:2 页码:1951-1966
英文摘要	Estimated breeding values of a selection index, production, durability, health, and fertility traits from Canadian Ayrshire, Jersey, and Brown Swiss bulls and cows were used to study genetic selection differentials (GSD). The bulls arid cows were born from 1950 and 1960, respectively. The GSD for the 3 Canadian dairy populations were studied along the 4-path selection model: sire-to-bull (SB), dam-to-bull (DB), sire-to-cow (SC), arid darn-to-cow (DC) pathways. We also determined the variations in realized GSD due to herd and herd x year of conception in addition to the effects of some environmental factors on realized GSD of the SC arid DC paths. The mean realized GSD of the DB were higher than those of other paths and were increasing for lifetime performance index, 305-d milk yield, 305-d fat yield, and 305-d protein yield in all 3 dairy cattle populations. We observed no clear trends in realized GSD for type traits in all 3 dairy cattle breeds except for the apparent increasing trends in realized GSD of mammary system, dairy strength, and feet and legs in the DB arid SC paths of the Ayrshire breed. No clear patterns were observed in the realized GSD of daughter fertility in the SB, DB, and SC paths of all dairy cattle breeds. Realized GSD for somatic cell score showed increasing and favorable trends in the 3 most influential selection paths (SB, DB, and SC). Year of conception influenced realized GSD of artificial insemination bulls in Ayrshire, Jersey, and Brown Swiss dairy populations. Selection emphases for the SC path generally increased with time. There was considerable variation among herds in selection pressures applied in the SC and DC pathways but no clear association with housing system or region. This study demonstrates that variations exist among herds of minor dairy cattle breeds in their selection for economically important traits. These variations offer opportunities for further improvements in these populations.
英文关键词	Ayrshire Brown Swiss Jersey realized genetic selection differential herd
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000608140300055
WOS关键词	REPRODUCTIVE-PERFORMANCE ; GENERATION INTERVALS ; CLINICAL MASTITIS ; FERTILITY TRAITS ; YIELD TRAITS ; HOLSTEIN ; PARAMETERS ; TRENDS ; PATHS ; COWS
WOS类目	Agriculture, Dairy & Animal Science ; Food Science & Technology
WOS研究方向	Agriculture ; Food Science & Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347997
作者单位	[Hagan, B. A.; Cue, R., I] McGill Univ, Anim Sci Dept, Ste Anne Bellevue, Montreal, PQ H9X 3V9, Canada; [Hagan, B. A.] Council Sci & Ind Res Anim Res Inst, Accra 00233, Ghana; [Moro-Mendez, J.] Dairy Consultant, Montreal, PQ, Canada
推荐引用方式 GB/T 7714	Hagan, B. A.,Moro-Mendez, J.,Cue, R., I. Realized genetic selection differentials in Canadian Ayrshire, Jersey, and Brown Swiss dairy cattle populations[J],2021,104(2):1951-1966.
APA	Hagan, B. A.,Moro-Mendez, J.,&Cue, R., I.(2021).Realized genetic selection differentials in Canadian Ayrshire, Jersey, and Brown Swiss dairy cattle populations.JOURNAL OF DAIRY SCIENCE,104(2),1951-1966.
MLA	Hagan, B. A.,et al."Realized genetic selection differentials in Canadian Ayrshire, Jersey, and Brown Swiss dairy cattle populations".JOURNAL OF DAIRY SCIENCE 104.2(2021):1951-1966.