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Tekin K, İnanç ME, Özen D, Cil B, Olğaç KT, Yılmaz B, Taşdemir U, Tuncer PB, Büyükleblebici S, Daşkın A, Uysal O, Stelletta C. Use of Infrared Thermography during Ejaculation Process and Its Link with Semen Quality and Freezability in Dogs. Animals (Basel) 2021; 11:ani11113023. [PMID: 34827755 PMCID: PMC8614508 DOI: 10.3390/ani11113023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 12/02/2022] Open
Abstract
Simple Summary Scientific attention to infrared technology has grown over the last decade. Remote and non-invasive monitoring techniques are of great importance in discovering ejaculation response and future trends because of their role in vascular flux regulation. However, detailed information about its use in andrology has yet to be fully explained. Therefore, we aimed to reveal information about the amount of sperm to be obtained by observing stress levels with non-invasive eye temperature measurement, and the relationship between various reproductive temperature patterns and parameters of the animal’s various physiological conditions such as age, body condition, total ejaculation time and testicular volume. Abstract This study aimed to describe the thermal variation of external reproductive tracts during ejaculation in relation to sperm quality in dogs. Forty-six adult fertile dogs were monitored using a thermal camera before, during and after the semen collection, taking into account penile and scrotal temperatures as reproductive thermal patterns while eye and perianal temperatures were recorded as complementary thermal patterns of behavioral response. The parameters were classified depending on age (≤4 years and >4 years), body weight (BW) (≤75 kg and >75 kg), sperm concentration (CON) (≤300 million and >300 million), total testicular volume (TTV) (≤600 cm3 and >600 cm3) and total ejaculation time (TET) (≤800 s and >800 s) of the animals from which semen was collected successfully. Heavier males (p < 0.05) that have more consistent testicles (p < 0.01) as well as quicker ejaculate responders (p < 0.001) and lower scrotal temperature had better semen (Δ motility) freezability. The lower eye temperature prior to the ejaculation (p < 0.01), lower scrotal temperature following ejaculation (p < 0.01), and conversely, higher penile temperature during the ejaculation (p < 0.001) had a higher sperm concentration. Furthermore, the sperm freezability was negatively correlated with total ejaculation time (r = −0.39, p < 0.05) and sperm abnormalities were lower in the ejaculate of dogs having a higher temperature of the scrotum, bulbus and penis. In conclusion, infrared monitoring throughout semen collection in dogs can provide information on behavioral reactions during human manipulation, as well as semen quality and testicular functionality.
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Affiliation(s)
- Koray Tekin
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
| | - Muhammed Enes İnanç
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur 15030, Turkey;
| | - Doğukan Özen
- Department of Biostatistics, Faculty of Veterinary Medicine, Ankara University, Ankara 06560, Turkey;
| | - Beste Cil
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
| | - Kemal Tuna Olğaç
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
| | - Burak Yılmaz
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
| | - Umut Taşdemir
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Aksaray University, Aksaray 68100, Turkey;
| | - Pürhan Barbaros Tuncer
- Technical Sciences Vocational School, Mersin University, Mersin 33110, Turkey; (P.B.T.); (S.B.)
| | - Serhat Büyükleblebici
- Technical Sciences Vocational School, Mersin University, Mersin 33110, Turkey; (P.B.T.); (S.B.)
| | - Ali Daşkın
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
| | - Ongun Uysal
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
| | - Calogero Stelletta
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ankara University, Ankara 68100, Turkey; (K.T.); (B.C.); (K.T.O.); (B.Y.); (A.D.); (O.U.)
- Department of Animal Medicine, Production and Health, University of Padova, 35122 Padova, Italy
- Correspondence:
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Moura ABB, Brandão FZ, Esteves SN, Nunes de Souza G, Fonseca JFD, Pantoja MHA, Romanello N, Botta D, Giro A, Garcia AR. Differences in the thermal sensitivity and seminal quality of distinct ovine genotypes raised in tropical conditions. Theriogenology 2019; 123:123-131. [PMID: 30292856 DOI: 10.1016/j.theriogenology.2018.09.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 09/10/2018] [Accepted: 09/26/2018] [Indexed: 11/16/2022]
Abstract
For different ovine breeds to maximize their reproductive capacity in countries with tropical climate, it is important to evaluate their potential for thermal resilience and consequences on their reproductive traits. Therefore, the objective of this study was to evaluate the effect of thermal environment temperatures of climate seasons in a tropical climate region on the surface temperatures of the scrotum, testicular biometric characteristics, seminal quality and serum testosterone concentration of rams of different genotypes. Breeders of four different genotypes (Dorper, n = 8, Texel, n = 8, Santa Inês, n = 9 and Morada Nova, n = 8) were used throughout the four climate seasons. Higher thermal challenge was recorded in the spring and summer. In the summer increase in scrotal surface temperature was detected by infrared thermography (P < 0.05), mainly in the regions of the distal testicular pole and tail of the epididymis. The animals of the Texel genotype had higher rectal temperature in the summer. In spring, this genotype also had the highest testicular pole (32.2 ± 0.5 °C; P < 0.05) and distal (29.9 ± 0.4 °C; P < 0.05) temperatures and a higher mean testicular temperature (31.7 ± 0.4 °C; P < 0.05). The Morada Nova genotype showed a higher surface temperature gradient between testicular poles (2.96 ± 0.1 °C; P < 0.05), especially in spring. Genotype-dependent thermal sensitivity was detected for the thermal gradient between the testicular poles, reflecting the seminal quality. There was a positive correlation of the thermal gradient between testicular poles with sperm membrane integrity and negative correlation with total sperm defects. The Texel genotype showed less progressive motility and higher percentage of sperm defects. There was no difference in testosterone concentration between genotypes and in the different seasons (P > 0.05). Thus, the indigenous genotypes showed a greater capability to maintain the scrotum-testicular thermoregulation. Dorper animals resembled the indigenous sheep genotypes, in terms of seminal characteristics, unlike Texel animals, which showed lower adaptability and lower seminal quality.
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Affiliation(s)
| | | | - Sérgio Novita Esteves
- Laboratory of Animal Reproduction, Brazilian Agricultural Research Corporation, Embrapa Southeast Livestock (CPPSE/Embrapa), São Carlos, SP, Brazil
| | | | | | | | - Narian Romanello
- Faculty of Veterinary Medicine and Animal Science, University of São Paulo (FMVZ/USP), Pirassununga, SP, Brazil
| | - Daniela Botta
- Institute of Veterinary Medicine, Federal University of Pará, Castanhal, PA, Brazil
| | - Alessandro Giro
- Institute of Veterinary Medicine, Federal University of Pará, Castanhal, PA, Brazil
| | - Alexandre Rossetto Garcia
- Laboratory of Animal Reproduction, Brazilian Agricultural Research Corporation, Embrapa Southeast Livestock (CPPSE/Embrapa), São Carlos, SP, Brazil.
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Romanello N, de Brito Lourenço Junior J, Barioni Junior W, Brandão FZ, Marcondes CR, Pezzopane JRM, de Andrade Pantoja MH, Botta D, Giro A, Moura ABB, do Nascimento Barreto A, Garcia AR. Thermoregulatory responses and reproductive traits in composite beef bulls raised in a tropical climate. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2018; 62:1575-1586. [PMID: 29732473 DOI: 10.1007/s00484-018-1557-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 04/10/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
It is believed that increased livestock production is limited by tropical climate. Thermal imbalance in bulls can lead to hyperthermia and alter testicular metabolism, causing subfertility or infertility. Therefore, the thermoregulation of composite Canchim bulls (5/8 Charolais × 3/8 Zebu) raised in tropical climate as well as their consequences in the physiological, hematological, hormonal, and andrological parameters were evaluated monthly. The bulls (n = 18; 30.0 ± 1.5 months; 503.8 ± 23.0 kg) were kept on pasture, in a single group, from August 2015 to March 2016, comprising the winter, spring, and summer seasons. Biometeorological variables were continuously monitored, and the Temperature and Humidity Index (THI) was calculated. A greater thermal challenge occurred in spring and summer (THI ≥ 72.0). Nevertheless, the bulls exhibited normothermia (38.6 to 38.9 °C) in these seasons. The cortisol did not vary between seasons (7.0 vs. 8.7 vs. 6.8 ng/mL; P > 0.05) and remained within the physiological patterns. Independent of the seasons, stress leukogram was also not observed, refuting the incidence of acute or chronic thermal stress. It is noteworthy that T3 and testosterone increased (P < 0.0001, P < 0.05) in spring and summer, the time that coincides with the breeding season, when there is increased metabolic requirement from the bulls. The progressive thermal challenge increase did not affect the scrotal thermoregulatory capacity, and in general, scrotal temperature remained at 5.2 °C below the internal body temperature. In summer, there was a 5% reduction in the minor sperm defects (P < 0.05) and DNA fragmentation in 2.4% of spermatozoa, a compatible value for high fertility bulls. The results show that the studied composite bulls can be considered as climatically adapted and constitute a viable alternative to be used in production systems in a tropical climate, even if the breeding seasons occur during the most critical thermal condition periods of the year.
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Affiliation(s)
- Narian Romanello
- Federal University of Pará, Av. dos Universitários, s/n, Castanhal, 68746-360, Brazil
| | | | - Waldomiro Barioni Junior
- Laboratory of Biotechnology and Animal Reproduction, Brazilian Agricultural Research Corporation, Embrapa Livestock Southeast, Rod. Washington Luiz, km 234, São Carlos, 13560-970, Brazil
| | | | - Cintia Righetti Marcondes
- Laboratory of Biotechnology and Animal Reproduction, Brazilian Agricultural Research Corporation, Embrapa Livestock Southeast, Rod. Washington Luiz, km 234, São Carlos, 13560-970, Brazil
| | - José Ricardo Macedo Pezzopane
- Laboratory of Biotechnology and Animal Reproduction, Brazilian Agricultural Research Corporation, Embrapa Livestock Southeast, Rod. Washington Luiz, km 234, São Carlos, 13560-970, Brazil
| | | | - Daniela Botta
- Federal University of Pará, Av. dos Universitários, s/n, Castanhal, 68746-360, Brazil
| | - Alessandro Giro
- Federal University of Pará, Av. dos Universitários, s/n, Castanhal, 68746-360, Brazil
| | | | | | - Alexandre Rossetto Garcia
- Laboratory of Biotechnology and Animal Reproduction, Brazilian Agricultural Research Corporation, Embrapa Livestock Southeast, Rod. Washington Luiz, km 234, São Carlos, 13560-970, Brazil.
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Assessment of body and scrotal thermoregulation and semen quality of hair sheep rams throughout the year in a tropical environment. Small Rumin Res 2018. [DOI: 10.1016/j.smallrumres.2018.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Menegassi SRO, Pereira GR, Dias EA, Rocha MK, Carvalho HR, Koetz C, Oberst ER, Barcellos JOJ. Infrared thermography as a noninvasive method to assess scrotal insulation on sperm production in beef bulls. Andrologia 2017; 50. [DOI: 10.1111/and.12904] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2017] [Indexed: 11/28/2022] Open
Affiliation(s)
- S. R. O. Menegassi
- Department of Animal Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - G. R. Pereira
- Department of Animal Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Department of Animal Production; University of Northern Parana; Arapongas PR Brazil
| | - E. A. Dias
- Biological Science Institute; Federal University of Rio Grande; São Lourenço RS Brazil
| | - M. K. Rocha
- Department of Animal Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - H. R. Carvalho
- Department of Animal Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - C. Koetz
- Department of Animal Production; University of Northern Parana; Arapongas PR Brazil
| | - E. R. Oberst
- Department of Veterinary Clinical Pathology; Veterinary School; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - J. O. J. Barcellos
- Department of Animal Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
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Vulvar thermal pattern following synchronization of estrus is linked to fertility after timed artificial insemination in goat. Theriogenology 2017; 103:137-142. [PMID: 28783590 DOI: 10.1016/j.theriogenology.2017.07.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/17/2017] [Accepted: 07/25/2017] [Indexed: 11/22/2022]
Abstract
Aim of this study was to study the vulvar thermal pattern variation during the timed artificial insemination protocol in Angora goat and identify the relationship with the successful rate. Does (36 adult healthy females) were synchronized using PGF2α at the day 0, 11 days of progesterone impregnated sponges intra-vaginally, PMSG 48 h before sponges withdraw (day 11) and the intra-cervical inseminations were carried out 48 h later (Timed Artificial Insemination: TAI) with chilled semen. Vulvar (VST) and perivulvar (PST) areas were considered to evaluate the thermal pattern during the protocol at the day 0 and at the TAI using a thermo camera (E60, FLIR System). Differences of temperature (ΔT) between the surfaces were calculated for each time. The does were monitored for pregnancy, delivery time and prolificacy. Pregnant (P) and non-pregnant (NP) does were compared in terms of VST, PST and ΔT using two ways ANOVA considering time and pregnancy as sources of variability. VST was lower than PST in all the monitored does (P < 0.05) (34.79 ± 0.14 vs 36.58 ± 0.14 °C) and without differences between P and NP at day 0 (35 ± 0.18 vs 36.39 ± 0.22 °C). Significant difference (P < 0.05) between P and NP does was recorded at TAI in terms of VST (33.89 ± 0.31 vs 35.40 ± 0.24 °C) and ΔT (-3.16 ± 0.34 vs -1.62 ± 0.26 °C). In conclusion thermal emission by glabrous surfaces in goat may be used to identify the right response induced by hormonal treatments and to optimize the application of assisted reproductive techniques at the field level.
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Recovery of normal testicular temperature after scrotal heat stress in rams assessed by infrared thermography and its effects on seminal characteristics and testosterone blood serum concentration. Theriogenology 2016; 86:795-805.e2. [DOI: 10.1016/j.theriogenology.2016.02.034] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 12/21/2015] [Accepted: 02/27/2016] [Indexed: 12/27/2022]
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