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Intrauterine therapy with ozone reduces subclinical endometritis and improves reproductive performance in postpartum dairy cows managed in pasture-based systems.
Tropical Animal Health and Production ( IF 1.7 ) Pub Date : 2020-05-22 , DOI: 10.1007/s11250-020-02298-3
Byron M Escandón 1 , Juan S Espinoza 1 , Fernando P Perea 2 , Fernando Quito 3 , Rafael Ochoa 1 , Gonzalo E López 1 , Diego A Galarza 1 , Juan Pablo Garzón 4, 5, 6
Affiliation  

New postpartum strategies have been developed in dairy cows to ameliorate uterine health and reproductive performance, especially the first service conception rates. This study aimed to assess the effect of intrauterine therapy with ozone (IUTO) in early postpartum on subclinical endometritis prevalence and reproductive parameters in dairy cows under commercial farm conditions. For this purpose, eighty clinically healthy cows with a body condition score between 3.0 and 3.5, from four dairy farms, were randomly allocated into two groups: ozone therapy group (OG, n = 40), which were subjected to IUTO, and control group (CG, n = 40). Content of uterine polymorphonuclear (PMN) leukocytes and subclinical endometritis (SE) percentage were assessed at 35 days after calving by uterine cytology. A second cytology was performed 72 h after IUTO. Reproductive parameters such as interval calving to first service (IFS), number of services per conception (nSC), interval calving to conception (ICC) and first service conception rate (FSCR) were analysed. The second endometrial cytology demonstrated that IUTO reduced (P < 0.01) both PMN (3.7 ± 1.4 vs. 7.6 ± 1.1%) and SE (5.0 vs. 50.0%) percentages compared with CG. Likewise, after ozone treatment, both nSC (2.1 ± 0.3 vs. 3.1 ± 0.2; P < 0.01) and ICC (126.2 ± 9.7 vs. 149.0 ± 9.0; P = 0.0672) decreased, and FSCR increased (50.0 vs. 16.2%; P < 0.01) compared with CG. In conclusion, intrauterine ozone therapy applied at 35 days after calving reduced subclinical endometritis prevalence and improved reproductive performance in postpartum dairy cows managed in a pasture-based system.

中文翻译:

在基于牧场的系统中进行的宫内臭氧治疗可减少亚临床子宫内膜炎并改善产后奶牛的生殖性能。

奶牛业已开发出新的产后策略,以改善子宫健康和生殖性能,尤其是初次受胎率。这项研究旨在评估商业化养殖场条件下产后早期宫腔内臭氧治疗(IUTO)对奶牛亚临床子宫内膜炎患病率和生殖参数的影响。为此,将来自四个奶牛场的80头身体状况得分在3.0到3.5之间的临床健康母牛随机分为两组:臭氧治疗组(OG,n = 40),接受IUTO;对照组(CG,n = 40)。在分娩后第35天,通过子宫细胞学评估子宫多形核(PMN)白细胞含量和亚临床子宫内膜炎(SE)百分比。IUTO后72小时进行第二次细胞学检查。分析了生殖参数,例如首次产程间隔(IFS),每个受孕的服务数量(nSC),产程间隔对首次受孕(ICC)和首次产卵率(FSCR)。第二次子宫内膜细胞学检查表明,与CG相比,IUTO降低了PMN(3.7±1.4对7.6±1.1%)和SE(5.0对50.0%)百分比(P <0.01)。同样,在臭氧处理后,nSC(2.1±0.3 vs. 3.1±0.2; P <0.01)和ICC(126.2±9.7 vs. 149.0±9.0; P = 0.0672)均降低,而FSCR升高(50.0 vs. 16.2%)。 P <0.01)与CG比较。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。分析每个受孕的服务数量(nSC),间隔产卵到受孕(ICC)和第一服务受孕率(FSCR)。第二次子宫内膜细胞学检查表明,与CG相比,IUTO降低了PMN(3.7±1.4对7.6±1.1%)和SE(5.0对50.0%)百分比(P <0.01)。同样,在臭氧处理后,nSC(2.1±0.3 vs. 3.1±0.2; P <0.01)和ICC(126.2±9.7 vs. 149.0±9.0; P = 0.0672)均降低,而FSCR升高(50.0 vs. 16.2%)。 P <0.01)与CG比较。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。分析了每个受孕的服务数量(nSC),间隔产卵到受孕(ICC)和第一服务受孕率(FSCR)。第二次子宫内膜细胞学检查表明,与CG相比,IUTO降低了PMN(3.7±1.4对7.6±1.1%)和SE(5.0对50.0%)百分比(P <0.01)。同样,在臭氧处理后,nSC(2.1±0.3 vs. 3.1±0.2; P <0.01)和ICC(126.2±9.7 vs. 149.0±9.0; P = 0.0672)均降低,而FSCR升高(50.0 vs. 16.2%)。 P <0.01)与CG比较。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。第二次子宫内膜细胞学检查表明,与CG相比,IUTO降低了PMN(3.7±1.4对7.6±1.1%)和SE(5.0对50.0%)百分比(P <0.01)。同样,臭氧处理后,nSC(2.1±0.3 vs. 3.1±0.2; P <0.01)和ICC(126.2±9.7 vs. 149.0±9.0; P = 0.0672)均降低,而FSCR升高(50.0 vs. 16.2%; P <0.01)与CG比较。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。第二次子宫内膜细胞学检查表明,与CG相比,IUTO降低了PMN(3.7±1.4对7.6±1.1%)和SE(5.0对50.0%)百分比(P <0.01)。同样,在臭氧处理后,nSC(2.1±0.3 vs. 3.1±0.2; P <0.01)和ICC(126.2±9.7 vs. 149.0±9.0; P = 0.0672)均降低,而FSCR升高(50.0 vs. 16.2%)。 P <0.01)与CG比较。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。7比149.0±9.0;与CG相比,P = 0.0672)下降,而FSCR上升(50.0对16.2%; P <0.01)。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。7比149.0±9.0;与CG相比,P = 0.0672)下降,而FSCR上升(50.0对16.2%; P <0.01)。总之,在以牧场为基础的系统管理的产后奶牛中,在产犊后35天进行宫内臭氧治疗可降低亚临床子宫内膜炎的患病率并改善生殖性能。
更新日期:2020-05-22
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