干旱区生态环境知识资源中心(Arid): Genetic parameters for conception rate and milk production traits within and across Holstein herds with different housing types and feeding systems during the first 3 lactations

Arid

DOI	10.3168/jds.2020-18494
	Genetic parameters for conception rate and milk production traits within and across Holstein herds with different housing types and feeding systems during the first 3 lactations
	Yamazaki, T.; Yamaguchi, S.; Takeda, H.; Osawa, T.; Hagiya, K.
通讯作者	Yamazaki, T
来源期刊	JOURNAL OF DAIRY SCIENCE
ISSN	0022-0302
EISSN	1525-3198
出版年	2020
卷号	103 期号:11 页码:10361-10373
英文摘要	The housing types (HST) in which dairy cows are kept and the feeding systems (FDS) used differ among farmers in Japan. Here, we investigated the genetic relationships among conception rate at first insemination (CR) and milk production traits (PROD) during the first 3 lactations of Holstein cows by using a multiple-trait model that considered the trait values of herds with different HST [tiestall (TSL) barn, freestall (FS) barn, or grazing (CZ)] and FDS as separate traits. Milk production and conception records of Holstein cows in the Hokkaido region of Japan (283,611 records for first lactation, 253,902 for second, and 181,197 for third) were analyzed. We categorized herds with TSL or FS into 2 types of FDS for cows: separate feeding (SF) of roughage plus concentrate or feeding of total mixed ration, in which roughage and concentrates were mixed before feeding. The PROD analyzed were cumulative milk, fat, and protein yields within 305 cl and lactation persistency, which we defined as the difference between milk yields at 240 and 60 d in milk. We estimated the heritabilities for CR or PROD within each HST or HST x FDS group arid the genetic correlations between these traits within each group or across different groups within each lactation by using a 3-MST (TSL, FS, and GZ) x 2-trait (CR and each PROD) or 2-HST (TSL and FS) x 2-FDS x 2-trait animal model. Heritability estimates for CR in GZ were higher than those in TSL or FS, and genetic correlations for CR between GZ and TSL or FS barns were weaker than those between TSL arid FS barns. In addition, genetic correlations between CR and PROD in GZ were weaker than those in TSL and FS barns. In the comparison among the 4 HST x FDS except GZ, heritability estimates for CR in FS x SF were higher than those in the others, and genetic correlations for CR between FS x SF and the other systems were relatively weak. These results indicated that differences in the production system for Holstein cows influence genotypic effects in terms of the cows' ability to conceive and the genetic relationships between fertility traits and milk production traits.
英文关键词	conception rate dairy cattle genotype by environment interaction management system
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000579895400060
WOS关键词	ENVIRONMENT INTERACTION ; FERTILITY TRAITS ; GENOTYPE ; PASTURE ; COWS ; YIELD
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/2XILL650/326915
作者单位	[Yamazaki, T.] Natl Agr & Food Res Org NARO, Hokkaido Agr Res Ctr, Sapporo, Hokkaido 0628555, Japan; [Yamaguchi, S.] Hokkaido Dairy Milk Recording & Testing Assoc, Sapporo, Hokkaido 0600004, Japan; [Takeda, H.] NARO, Inst Livestock & Grassland Sci, Tsukuba, Ibaraki 3050901, Japan; [Osawa, T.] Natl Livestock Breeding Ctr, Fukushima 9618511, Japan; [Hagiya, K.] Obihiro Univ Agr & Vet Med, Obihiro, Hokkaido 0808555, Japan
推荐引用方式 GB/T 7714	Yamazaki, T.,Yamaguchi, S.,Takeda, H.,et al. Genetic parameters for conception rate and milk production traits within and across Holstein herds with different housing types and feeding systems during the first 3 lactations[J],2020,103(11):10361-10373.
APA	Yamazaki, T.,Yamaguchi, S.,Takeda, H.,Osawa, T.,&Hagiya, K..(2020).Genetic parameters for conception rate and milk production traits within and across Holstein herds with different housing types and feeding systems during the first 3 lactations.JOURNAL OF DAIRY SCIENCE,103(11),10361-10373.
MLA	Yamazaki, T.,et al."Genetic parameters for conception rate and milk production traits within and across Holstein herds with different housing types and feeding systems during the first 3 lactations".JOURNAL OF DAIRY SCIENCE 103.11(2020):10361-10373.