Comparison of ultrasonographic measures of reproductive tract in Thai swamp buffalo heifers and cows

IF 0.2 4区 农林科学 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE Buffalo Bulletin Pub Date : 2023-12-31 DOI:10.56825/bufbu.2023.4245554
S. Majarune, W. Maitreejet, Pumrapee Tanjaichon, Arthit Panyasak, Chakrit Borirak, T. Raungprim, A. Pinyopummin, S. Rattanatabtimtong
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Abstract

Although artificial insemination (AI) technology is widely used in buffalo breeding in Thailand, AI in buffaloes has a lower conception rate compared to AI in beef cattle. It is crucial to understand the development of the ovary and reproductive system of buffalo heifers and cows. The objective of the present study was to evaluate the reproductive tract characteristic using ultrasound measurements during the luteal and follicular phases in Thai swamp buffalo heifers and cows. The studies of reproductive tract were conducted in buffalo cows (n=8; BCS=3.38) and heifers (n=8; BCS=3.25). The reproductive tract was evaluated by measuring the size of the ovary, dominant follicle, CL, uterine horn, cervix, and vulva. The buffalo cows had larger diameter of the cervix and vulvar width (P<0.05) compared with those of heifers. In the follicular phase, buffalo cows had a mean ovarian diameter (ipsilateral POF) of 2.35 cm, and heifers had a mean ovarian diameter of 2.24 cm (P>0.05). The average preovulatory follicle diameter was 1.29 cm in buffalo cows and 1.18 cm in heifers (P>0.05). In the luteal phase, the mean ovarian diameter (ipsilateral CL) of buffalo cows was significantly larger than heifers (P<0.05; 2.46 vs. 2.09 cm, respectively). The diameters of the CL in buffalo heifers and cows were 1.27 and 1.47 cm, respectively (P>0.05). Buffalo cows and heifers have no differences in ovarian components in the follicular and luteal phases, but there are differences in the size of the reproductive tract, which reproductive tract of buffalo cows is larger than heifers.
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泰国沼泽水牛母牛和母牛生殖道超声波测量的比较
虽然人工授精(AI)技术在泰国的水牛饲养中得到了广泛应用,但与肉牛人工授精相比,水牛人工授精的受孕率较低。了解水牛母牛和母牛卵巢和生殖系统的发育情况至关重要。本研究的目的是利用超声波测量泰国沼泽水牛母牛和奶牛黄体期和卵泡期的生殖道特征。对水牛母牛(8 头;BCS=3.38)和小母牛(8 头;BCS=3.25)的生殖道进行了研究。通过测量卵巢、优势卵泡、CL、子宫角、子宫颈和外阴的大小来评估生殖道。水牛的子宫颈直径和外阴宽度较大(P0.05)。水牛排卵前卵泡的平均直径为 1.29 厘米,小母牛为 1.18 厘米(P>0.05)。在黄体期,水牛的平均卵巢直径(同侧CL)明显大于母牛(P0.05)。水牛和母牛在卵泡期和黄体期的卵巢成分没有差异,但在生殖道大小上存在差异,水牛的生殖道大于母牛。
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来源期刊
Buffalo Bulletin
Buffalo Bulletin AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
0.50
自引率
0.00%
发文量
53
审稿时长
>12 weeks
期刊介绍: Buffalo Bulletin is published quarterly in January-March, April-June, July-September and October-December. Contributions on any aspect of research or development, progress reports of projects and news on buffalo will be considered for publication in the bulletin.
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