Economic and Reproductive Performances of Two Estrus Synchronization Protocols in Dairy Cows

Rittichai, Pilachai; Phatcharee, Phasuk; Pranpreya, Kummee; Yuavapol, Chumpol; Weerachai, Thongdee

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dc.contributor.author	Rittichai, Pilachai
dc.contributor.author	Phatcharee, Phasuk
dc.contributor.author	Pranpreya, Kummee
dc.contributor.author	Yuavapol, Chumpol
dc.contributor.author	Weerachai, Thongdee
dc.date.accessioned	2017-09-25T07:59:54Z
dc.date.available	2017-09-25T07:59:54Z
dc.date.issued	2016
dc.identifier.citation	การประชุมวิชาการระดับชาติและนานาชาติ “ราชภัฏวิจัยครั้งที่ 4”	en_US
dc.identifier.uri	http://dspace.bru.ac.th/xmlui/handle/123456789/2336
dc.description	Abstract The objective of this study was to compare reproductive and economic efficiency between the estrus synchronization protocols utilizing a controlled internal drug release insert (CIDR-E2-PG) and fixed time artificial insemination protocol (Ovsynch) in lactating cows. A total of 120 anestrus cross-breed Holstein Frisian lactating cows from 9 dairy herds were randomly assigned to the CIDR-E2-PG (n=60) or the Ovsynch (n=60) protocol. Overall, the cumulative pregnancy rate within 250 d in milk period, cows in the CIDR-E2-PG group tended to have a higher (P=0.14) compared with the cows received Ovsynch program. Cows in the CIDR-E2-PG group tended to have a greater percentage of pregnancy within the first AI (P=0.11). Irrespective of lactation number and body condition score, estimated median times of day open of cows in the CIDR-E2-PG group tended to be (P=0.07) a shorter than the Ovsynch cows. The cost per conception utilizing the CIDR-E2-PG protocol was lower than the Ovsynch protocol. Furthermore, the efficient scale of economics for the CIDR-E2-PG protocol was significantly higher (P<0.05) when compared with the Ovsynch protocol. It can be concluded that estrus synchronization with the CIDR-E2- PG protocol tended to improve reproductive performances, reduced production cost and increase the economic efficiency scale in lactating cows.	en_US
dc.publisher	มหาวิทยาลัยราชภัฏบุรีรัมย์	en_US
dc.subject	Estrus synchronization	en_US
dc.subject	reproductive performances	en_US
dc.subject	economic	en_US
dc.subject	lactating cow	en_US
dc.title	Economic and Reproductive Performances of Two Estrus Synchronization Protocols in Dairy Cows	en_US
dc.type	Proceedings	en_US