Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls
ABSTRACT The objective of this study was to evaluate characteristics of the testicular parenchyma and vascular parameters of the pampiniform plexus obtained by ultrasound, semen quality parameters, and sperm freezability in Nellore bulls classified based on residual feed intake (RFI). Twenty-seven b...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Zootecnia
2023-06-01
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| Series: | Revista Brasileira de Zootecnia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982023000100700&tlng=en |
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| author | Marcelo Sant’Ana Borges Marina de Oliveira Silva Luana Gomes Fernandes Naiara Nantes Rodrigues Guilherme Fazan Rossi Camila de Paula Freitas-Dell’Aqua Sarah Figueiredo Martins Bonilha Maria Eugênia Zerlotti Mercadante Fabio Morato Monteiro |
| author_facet | Marcelo Sant’Ana Borges Marina de Oliveira Silva Luana Gomes Fernandes Naiara Nantes Rodrigues Guilherme Fazan Rossi Camila de Paula Freitas-Dell’Aqua Sarah Figueiredo Martins Bonilha Maria Eugênia Zerlotti Mercadante Fabio Morato Monteiro |
| author_sort | Marcelo Sant’Ana Borges |
| collection | DOAJ |
| description | ABSTRACT The objective of this study was to evaluate characteristics of the testicular parenchyma and vascular parameters of the pampiniform plexus obtained by ultrasound, semen quality parameters, and sperm freezability in Nellore bulls classified based on residual feed intake (RFI). Twenty-seven bulls (21.82±0.88 months of age) evaluated for feed efficiency were sampled for the study, including 15 with low RFI (−0.592±0.09 kg dry matter/day) and 12 with high RFI (0.792±0.10 kg dry matter/day). In ultrasound and Doppler assessment, the most efficient animals (low RFI) showed higher pulsatility and resistive indexes, as well as a tendency towards greater heterogeneity of the testicular parenchyma (0.625±0.032 vs. 0.508±0.032, 1.012±0.072 vs. 0.802±0.072, and 12.9±0.96 vs. 10.2±0.96, respectively, for low vs. high RFI). However, these animals tended to have lower peak diastolic velocity (5.19±0.50 for low RFI vs. 6.54±0.50 for high RFI). Analysis of fresh semen showed a lower percentage of minor defects in low RFI animals (2.67±1.19%) compared with high RFI animals (8.10±1.19%), without differences in the other parameters in fresh or thawed semen and after thermoresistance testing. Evaluation of flow cytometry parameters showed a higher quality of mitochondrial respiration in semen samples of low RFI animals (22.04±2.50%) compared with high RFI animals (12.29±2.71%). Therefore, although RFI exerts an effect on the Doppler parameters of the pampiniform plexus, it is not sufficient to affect the quality of fresh or thawed semen. |
| first_indexed | 2024-03-13T02:19:31Z |
| format | Article |
| id | doaj.art-edbd6a2dd7bc455d8b6b9dce4379c07c |
| institution | Directory Open Access Journal |
| issn | 1806-9290 |
| language | English |
| last_indexed | 2024-03-13T02:19:31Z |
| publishDate | 2023-06-01 |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-edbd6a2dd7bc455d8b6b9dce4379c07c2023-06-30T10:54:21ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1806-92902023-06-015210.37496/rbz5220220041Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bullsMarcelo Sant’Ana Borgeshttps://orcid.org/0000-0002-8842-5710Marina de Oliveira Silvahttps://orcid.org/0000-0003-4988-9958Luana Gomes Fernandeshttps://orcid.org/0000-0003-1832-0021Naiara Nantes Rodrigueshttps://orcid.org/0000-0001-5580-9606Guilherme Fazan Rossihttps://orcid.org/0000-0002-8786-2839Camila de Paula Freitas-Dell’Aquahttps://orcid.org/0000-0002-4457-9160Sarah Figueiredo Martins Bonilhahttps://orcid.org/0000-0002-8055-4112Maria Eugênia Zerlotti Mercadantehttps://orcid.org/0000-0002-1218-5378Fabio Morato Monteirohttps://orcid.org/0000-0003-4344-4667ABSTRACT The objective of this study was to evaluate characteristics of the testicular parenchyma and vascular parameters of the pampiniform plexus obtained by ultrasound, semen quality parameters, and sperm freezability in Nellore bulls classified based on residual feed intake (RFI). Twenty-seven bulls (21.82±0.88 months of age) evaluated for feed efficiency were sampled for the study, including 15 with low RFI (−0.592±0.09 kg dry matter/day) and 12 with high RFI (0.792±0.10 kg dry matter/day). In ultrasound and Doppler assessment, the most efficient animals (low RFI) showed higher pulsatility and resistive indexes, as well as a tendency towards greater heterogeneity of the testicular parenchyma (0.625±0.032 vs. 0.508±0.032, 1.012±0.072 vs. 0.802±0.072, and 12.9±0.96 vs. 10.2±0.96, respectively, for low vs. high RFI). However, these animals tended to have lower peak diastolic velocity (5.19±0.50 for low RFI vs. 6.54±0.50 for high RFI). Analysis of fresh semen showed a lower percentage of minor defects in low RFI animals (2.67±1.19%) compared with high RFI animals (8.10±1.19%), without differences in the other parameters in fresh or thawed semen and after thermoresistance testing. Evaluation of flow cytometry parameters showed a higher quality of mitochondrial respiration in semen samples of low RFI animals (22.04±2.50%) compared with high RFI animals (12.29±2.71%). Therefore, although RFI exerts an effect on the Doppler parameters of the pampiniform plexus, it is not sufficient to affect the quality of fresh or thawed semen.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982023000100700&tlng=enfeed efficiencyIndian cattlesperm kineticstesticular parenchyma |
| spellingShingle | Marcelo Sant’Ana Borges Marina de Oliveira Silva Luana Gomes Fernandes Naiara Nantes Rodrigues Guilherme Fazan Rossi Camila de Paula Freitas-Dell’Aqua Sarah Figueiredo Martins Bonilha Maria Eugênia Zerlotti Mercadante Fabio Morato Monteiro Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls Revista Brasileira de Zootecnia feed efficiency Indian cattle sperm kinetics testicular parenchyma |
| title | Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls |
| title_full | Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls |
| title_fullStr | Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls |
| title_full_unstemmed | Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls |
| title_short | Relationship of residual feed intake with semen parameters and testicular ultrasound of Nellore bulls |
| title_sort | relationship of residual feed intake with semen parameters and testicular ultrasound of nellore bulls |
| topic | feed efficiency Indian cattle sperm kinetics testicular parenchyma |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982023000100700&tlng=en |
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