Pregnancy rate following artificial insemination or natural service in postpartum estrus synchronized beef cattle

被引：2

作者：

Malik, Abdul ^{[1
,2
]}

Haron, Abd Wahid ^{[2
]}

Yusoff, Rosnina ^{[2
]}

Kasim, Azhar ^{[3
]}

Yusoff, Sabri Mohd ^{[4
]}

机构：

[1] Islamic Kalimantan Univ, Fac Agr, Dept Anim Sci, Banjarmasin, Indonesia

[2] Univ Putra Malaysia, Fac Vet Med, Dept Vet Clin Studies, Upm Serdang 43400, Selangor Darul, Malaysia

[3] Univ Putra Malaysia, Fac Agr, Dept Anim Sci, Upm Serdang 43400, Selangor Darul, Malaysia

[4] Univ Putra Malaysia, Dept Vet Pathol & Microbiol, Fac Vet Med, Upm Serdang 43400, Selangor Darul, Malaysia

来源：

TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES | 2012年 / 36卷 / 04期

关键词：

Natural service; artificial insemination; estrus synchronization; conception rate; REPRODUCTIVE-PERFORMANCE; DAIRY-COWS; ENDOMETRITIS;

D O I：

10.3906/vet-1008-15

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

The objective of this study was to investigate the pregnancy rate following artificial insemination (AI) or natural service (NS) in postpartum estrous synchronized beef cattle. A total of 85 Brangus cows, postpartum, were divided into 2 groups. Group 1 consisted of 35 cows and was further subdivided into 7 groups, each consisted of 5 cows that were naturally mated. Group 2 consisted of 40 cows that were artificially inseminated. Estrus synchronization was carried out using a controlled internal drug releasing device (CIDR) containing 1.38 mg of progesterone, for 7 days. Group 1 cows were mixed with bulls at a 1:5 ratio of bull: cows for 7 days and group 2 cows were inseminated 55-58 h aft er the CIDR removal. Pregnancy was determined using transrectal ultrasonography 32 days aft er NS and AI. The pregnancy rate was higher in the NS group (28.6%) than in the AI group (18.0%), but the difference was not significant (P > 0.05).

引用

页码：451 / 455

页数：5

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