کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8426200 | 1546051 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of breed on testicular blood flow dynamics in bulls
ترجمه فارسی عنوان
تأثیر نژاد بر پویایی جریان خون بیضه در گاوها
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
همودینامیک مفصلی، شاخص تندرستی، شاخص مقاومتی، تنظیم حرارتی، بولز،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
The evaluation of testicular hemodynamics can contribute significantly to the understanding of the thermoregulatory mechanisms and oxygen supply of the testis in domestic animals. The present study aimed to characterize circulatory dynamics using the mean velocity (MV), pulsatility index (PI) and resistive index (RI) of the supratesticular artery in bulls. We evaluated 334 bulls of five different breeds (Nelore, Hereford, Aberdeen Angus, Braford and Brangus) by performing a velocimetry analysis using Doppler ultrasonography. Data were compared by Welch's ANOVA, Games-Howell (post-hoc test) and Spearman correlation with a significance level of 5%. The overall MV of 12.14â¯Â±â¯0.30â¯cm/s differed among breeds. In addition, we observed that Brangus bulls showed higher (Pâ¯<â¯0.05) MV (16.28â¯Â±â¯1.02â¯cm/s) compared to Nelore bulls (8.76â¯Â±â¯0.40â¯cm/s). The RI had an overall mean of 0.41â¯Â±â¯0.01 and differed among breeds. We observed higher (Pâ¯<â¯0.05) RI values in Hereford (0.44â¯Â±â¯0.01) compared to Brangus (0.36â¯Â±â¯0.02) animals. Overall, the PI values (0.33â¯Â±â¯0.01) did not differ (Pâ¯>â¯0.05) among breeds. The correlation between the PI and RI (0.936; Pâ¯<â¯0.001) was high and positive; however, the correlations were low and negative between MV and the PI (â0.228; Pâ¯<â¯0.001) and between MV and the RI (â0.270; Pâ¯<â¯0.001). We concluded that there are differences in the MV and RI of the bulls' supratesticular arteries among the different evaluated breeds. Moreover, the presented values attributed to blood flow dynamics can serve as parameters in future studies and can be used to identify alternative diagnostic tools for infertility or to understand issues of adaptability in bulls.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theriogenology - Volume 118, 15 September 2018, Pages 16-21
Journal: Theriogenology - Volume 118, 15 September 2018, Pages 16-21
نویسندگان
Flávio Antônio Barca Junior, Celso Koetz Junior, PatrÃcia da Cruz Fávaro, Gabriel Ribas Pereira, Fábio Morotti, Silvio Renato Oliveira Menegassi, Júlio Otávio Jardim Barcellos, Marcelo Marcondes Seneda,