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Tironi SMT, Sitó-Silva L, de Camillo BL, Denadai R, Silva ALAD, de Paula Freitas-Dell'Aqua C, Junior JAD, de Oliveira RA, Souza MIL, Oba E. Use of coenzyme Q-10 to improve the pregnancy rate in sheep. Anim Reprod Sci 2024; 266:107498. [PMID: 38788536 DOI: 10.1016/j.anireprosci.2024.107498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/06/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
One of the factors responsible for less pregnancy rates is the use of frozen semen in sheep due to the oxidative stress created by the process. The aim of this experiment was to test the effects of adding coenzyme Q-10 (CoQ10) to the seminal extender on sperm quality and the pregnancy rate of sheep. In this study, ejaculates from eight Dorper rams of reproductive age were used and tested in four treatments: Control (pure BotuBov®), C1 (175 µM of CoQ10), C3 (350 µM of CoQ10), and C7 (700 µM of CoQ10). Samples were collected in triplicate from each animal, and sperm analysis was performed by CASA after thawing at 0 h and 2 h. The samples were also analyzed by flow cytometry for plasma and acrosomal membrane integrity, stability, lipid peroxidation, mitochondrial potential, and superoxide anion production. In total, 198 ewes were inseminated by laparoscopy and divided into two groups: control (n=98) and C7 (n=100). Pregnancy diagnosis was performed at 30 days. Coenzyme Q10 proved to be safe for semen cryopreservation, not altering sperm kinetic values between the groups post-thawing. In flow cytometry, the C1 and C7 groups achieved a better index of plasma membrane integrity and membrane stability (P<0.05). A increased pregnancy rate was observed in C7 (52 %) compared to the control (38 %). In conclusion, coenzyme Q10 assists in the cryopreservation process, protecting the sperm cell and improving pregnancy rates in ewes.
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Affiliation(s)
- Stella Maris Teobaldo Tironi
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil
| | - Luan Sitó-Silva
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil
| | - Beatriz Lippe de Camillo
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil
| | - Renan Denadai
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil
| | | | - Camila de Paula Freitas-Dell'Aqua
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil
| | - José Antonio Dell'Aqua Junior
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil
| | | | - Maria Inês Lenz Souza
- Morphophysiology Department, Biosciences Institute, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Eunice Oba
- Veterinary Surgery and Animal Reproduction Department, College of Veterinary Medicine and Animal Science, Paulista State University, Botucatu, Brazil.
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Hassan MAE, Khalil WA, Ismail AA, Momenah MA, Al-Marakby KM, Abdelnour SA. Effect of interleukin 6 (IL-6) on sperm quality, kinematic parameters, acrosome integrity, apoptosis, ultrastructure, and molecular docking in cryopreserved ram spermatozoa. Reprod Biol 2024; 24:100912. [PMID: 38852377 DOI: 10.1016/j.repbio.2024.100912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/25/2024] [Accepted: 05/28/2024] [Indexed: 06/11/2024]
Abstract
Sperm cryopreservation can lead to subfertility due to potential damage to sperm DNA, membranes, and overall motility caused by the freeze-thaw process. Interleukin-6 (IL-6) is a versatile cytokine with various roles in reproductive processes. However, the impacts of IL-6 supplementation on cryopreserved ram sperm have not been thoroughly investigated. Therefore, this study aims to assess the influence of IL-6 on the sperm quality of cryopreserved ram sperm. Ram semen was collected, pooled, and extended with tris-citrate soybean lecithin extender supplemented with 0, 50, 100, and 200 ng/mL of IL-6. The samples experienced a standard freezing protocol, and sperm quality, kinematic parameters, ultrastructure, and molecular docking of cryopreserved ram spermatozoa were evaluated. The results showed that sperm kinematics, viability, progressive motility, and membrane integrity were significantly enhanced by the addition of 100 or 200 ng of IL-6/mL (p < 0.05). Semen supplemented with 100 or 200 ng/mL of IL-6 also exhibited higher percentages of sperm kinematics, including DAP, DCL, DSL, VSL, VAP, VCL, and ALH, compared to other groups (p < 0.05). IL-6 supplementation enhanced acrosome integrity, and reduced caspase-3 activity in post-thawed ram spermatozoa (p < 0.05) compared to untreated group. Supplementation with IL-6 (200 ng/mL) significantly decreased oxidative biomarkers (NO, MDA, and H2O2) (p < 0.001) and improved total antioxidant capacity (p < 0.05). The percentage of sperm damage (tail, head, and midpiece) was significantly reduced by IL-6 supplementation (p < 0.05). Electron micrographs showed that supplementation with 100 or 200 ng/mL IL-6 protected acrosome stability, plasma membrane integrity, and sustained the ultrastructure integrity of cryopreserved ram spermatozoa. The docking exploration indicates a higher binding affinity with sperm function biomarkers, including caspase 3, BCL2, and PSMA6, with binding energies of - 52.30 kcal/mol, - 56.04 kcal/mol, and - 57.06 kcal/mol, respectively. In conclusion, the addition of IL-6 to the freezing extender can enhance the post-thaw quality of cryopreserved ram spermatozoa.
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Affiliation(s)
- Mahmoud A E Hassan
- Animal Production Research Institute, Agriculture Research Centre, Ministry of Agriculture, Dokki, Giza 12619, Egypt
| | - Wael A Khalil
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt.
| | - Aya A Ismail
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
| | - Maha Abdullah Momenah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Khaled M Al-Marakby
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Sameh A Abdelnour
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
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El Amiri B, Rahim A. Exploring Endogenous and Exogenous Factors for Successful Artificial Insemination in Sheep: A Global Overview. Vet Sci 2024; 11:86. [PMID: 38393104 PMCID: PMC10891879 DOI: 10.3390/vetsci11020086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/20/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Artificial insemination (AI) plays a vital role in animal breeding programs. AI is applied to enhance animal genetics and facilitate the widespread integration of desirable characteristics with a high potential for productivity. However, in sheep, this biotechnology is not commonly practicable due to multi-factorial challenges, resulting in inconsistent outcomes and unpredictable results. Thoughtful selection of semen donors and recipients based on genetic merit deeply impacts ovine AI outcomes. Additionally, endogenous factors such as breed, age, fertility traits, genetic disorders, and cervical anatomy in ewes contribute to ovine AI success. Extensive research has studied exogenous influences on sexual behavior, reproductive health, and hormonal regulation, all impacting ovine AI success. These exogenous factors include techniques like estrus induction, synchronization, semen handling methods (fresh/chilled/frozen), and insemination methods (cervical/laparoscopic), as well as nutritional factors and climatic conditions. This overview of the literature highlights the endogenous and exogenous challenges facing successful ovine AI and proposes strategies and best practices for improvement. This paper will serve as a guide for understanding and optimizing the success of ovine AI.
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Affiliation(s)
- Bouchra El Amiri
- Animal Production Unit, Regional Center Agricultural Research of Settat, National Institute for Agricultural Research (INRA), Avenue Ennasr, P.O. Box 415 Rabat Principal, Rabat 10090, Morocco;
- African Sustainable Agriculture Research Institute (ASARI), Mohammed VI Polytechnic University (UM6P), Laayoune 70000, Morocco
| | - Abdellatif Rahim
- Animal Production Unit, Regional Center Agricultural Research of Settat, National Institute for Agricultural Research (INRA), Avenue Ennasr, P.O. Box 415 Rabat Principal, Rabat 10090, Morocco;
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, Hassan First University of Settat, P.O. Box 577, Settat 26000, Morocco
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Bayomy MFF, Hassab El-Nabi SE, El Kassas TA, Attia ZI, Saeed AM, Taha HSA, Alagawany M, Galosi L, Biagini L, El-Kassas S. Extender Supplementation with Glutathione (GSH) and Taurine Improves In Vitro Sperm Quality and Antioxidant Status of New Zealand Rabbits during Chilled Storage for up to 72 hours. Vet Med Int 2023; 2023:8339591. [PMID: 37732161 PMCID: PMC10509003 DOI: 10.1155/2023/8339591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 08/26/2023] [Accepted: 08/30/2023] [Indexed: 09/22/2023] Open
Abstract
This study assessed the influence of supplementing the rabbit semen extender with various concentrations of glutathione (GSH) and taurine at 24, 48, and 72 h postchilling at 5°C. Semen samples were collected from 20 New Zealand bucks, and ejaculates with standard color, motility (>85%), about 0.5 mL volume, and ∼400 × 106/mL concentration were used and diluted with extenders supplemented with 0.5, 1, and 2 mM of GSH and 1, 5, and 10 mM of taurine and chilled at 5°C. Nonsupplemented samples were used as a control. Sperm's progressive motility, acrosome reaction, and extracellular oxidative stress biomarkers such as MDA contents and GPx, SOD, and CAT concentrations and intracellular transcriptomic levels of SOD and CAT genes were assessed. GSH and taurine supplementation improved the sperm's kinetics by reducing cooling-associated stress, which was ascertained by lowering MDA concentration and increasing SOD, CAT, and GPx concentrations (P < 0.05). Increasing the levels of antioxidant enzymes in the extender was due to the increasing mRNA copies of the SOD and CAT genes (P < 0.05). Furthermore, GSH and taurine maintained the fructose levels in the extender and lowered the GPT levels, which implies sperm membrane stability is maintained through GSH and taurine supplementation. GSH and taurine supplementation to the extender had protective influences on the in vitro rabbit semen quality during chilled storage for up to 72 h, which were remarkable with increasing supplementation dose and cooling time at 5°C.
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Affiliation(s)
- Mohamed F. F. Bayomy
- Zoology Department, Faculty of Science, Menoufia University, Shibin Al Kawm, Egypt
- General Biology Department, Center of the Basic Sciences, Misr University for Science and Technology (MUST), 6th of October City, Egypt
| | | | - Tahany A. El Kassas
- Zoology Department, Faculty of Science, Menoufia University, Shibin Al Kawm, Egypt
| | - Zeinab I. Attia
- Zoology Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Ayman M. Saeed
- Biotechnology Department, Animal Production Research Institute, Giza, Egypt
| | - Heba S. A. Taha
- Department of Genetics, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Mahmoud Alagawany
- Poultry Department, Agriculture Faculty, Zagazig University, Zagazig 44519, Egypt
| | - Livio Galosi
- School of Bioscience and Veterinary Medicine, University of Camerino, Matelica 62024, Italy
| | - Lucia Biagini
- School of Bioscience and Veterinary Medicine, University of Camerino, Matelica 62024, Italy
| | - Seham El-Kassas
- Animal, Poultry, and Fish Breeding and Production, Department of Animal Wealth Development, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr el-Sheikh, Egypt
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Kamal MM, Alam ME, Das SK, Yeasmin MS, Ahmed S, Rahman MA, Das DK, Gofur MR, Masum MA. Effects of glucose and trehalose on tris-citric acid-egg yolk-fructose diluents for semen cryopreservation in goat. J Adv Vet Anim Res 2023; 10:169-177. [PMID: 37534075 PMCID: PMC10390673 DOI: 10.5455/javar.2023.j666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 08/04/2023] Open
Abstract
Objectives This study aimed to examine the impacts of the wide range of concentrations of glucose and trehalose on the tris-citric acid-egg yolk-fructose (TCEF) extenders for cryopreservation of goat semen. Materials and Methods The sperm sample was pooled, washed, and diluted in control (TCEF without glucose and trehalose), TCEF + glucose (75, 150, 450, and 900 mm), and TCEF + trehalose (75, 150, 450, and 900 mm). After equilibrations, the semen straws were frozen under LN2 in the LN2 tank. After LN2 storage, the straws were thawed at 37°C for 30 seconds. The sperm parameters of all study groups were checked after equilibration and freezing. Results After equilibration, the progressive motility (PM), total motility (TM), and viability of sperm in G-75, G-150, G-450, T-75, T-150, and T-450 were not significantly different (p < 0.05) from those in control. After cryopreservation and thawing, the PM, TM, and plasma membrane integrity (PMI) of T-150 were significantly higher (p < 0.05) than in control, G-75, G-900, T-75, and T-900. The viability of sperm in T-150 was substantially higher (p < 0.05) than in the control, whereas there was no significant difference among the control, G-75, G-900, T-75, and T-900. However, the acrosome integrity (AI) of sperm in G-900 was significantly decreased (p < 0.05) compared to the control, G-75, G-150, G-450, T-75, T-150, and T-450. Conclusion According to the findings, the supplementation of 150 mm trehalose in the TCEF diluent was more efficient for sperm cryopreservation in the buck as reflected by PM, TM, viability, PMI, and AI.
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Affiliation(s)
- Md. Mostofa Kamal
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Md. Emtiaj Alam
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Sunny Kumar Das
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Most. Shorifa Yeasmin
- Department of Pharmacy, Faculty of Sciences and Engineering, East West University, Dhaka, Bangladesh
| | - Soshe Ahmed
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Mst. Afroza Rahman
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Dipak Kumar Das
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Md. Royhan Gofur
- Department of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Rajshahi University, Rajshahi, Bangladesh
| | - Md. Abdul Masum
- Department of Anatomy, Histology and Physiology, Faculty of Animal Science and Veterinary Medicine, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
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Barbas JP, Pimenta J, Baptista MC, Marques CC, Pereira RMLN, Carolino N, Simões J. Ram Semen Cryopreservation for Portuguese Native Breeds: Season and Breed Effects on Semen Quality Variation. Animals (Basel) 2023; 13:ani13040579. [PMID: 36830367 PMCID: PMC9951670 DOI: 10.3390/ani13040579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
The semen quality is one of the determinant factors of ram semen cryopreservation. The present retrospective study aimed to characterize the seasonal ram pattern during the year for ten Portuguese local sheep breeds, hypothesizing that the breed and season had low effects on the main spermatozoa traits. A total of 1471 ejaculates were used and evaluated (fresh semen) from 85 rams between 2004 and 2020 and re-evaluated after thawing (thawed semen). The effect of breed, season, and sperm cryopreservation on nine semen traits were evaluated. The volume per ejaculate, spermatozoa (SPZ) concentration, and total number of SPZ per ejaculate, were affected by breed (p < 0.001) but not by season (p > 0.05). As expected, the semen processing was the most significant (p < 0.001) factor of variation on seminal parameters. Moreover, breed and interactions between breed × semen processing, modulated the response of alive SPZ, abnormal morphology, head, and intermediate piece defects. In fresh semen, season only affected the intermediate piece defects due to the highest percentage observed between February and April period in some breeds. Overall, and despite the mentioned particularities, there were similarities among the ten local breeds. We also concluded that the seasonal effect on ejaculate and SPZ traits is not significant in our region. These local ram breeds have low seasonality and can be employed in natural mating as well as semen donors for cryopreservation and assisted reproductive biotechnologies during the whole year at our latitude.
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Affiliation(s)
- João Pedro Barbas
- Department of Biotechnology and Genetic Resources of Instituto Nacional de Investigação Agrária e Veterinária, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
- CIISA-AL4AnimalS-Faculty of Veterinary Medicina, Universidade de Lisboa, 1300-477 Lisboa, Portugal
| | - Jorge Pimenta
- Department of Biotechnology and Genetic Resources of Instituto Nacional de Investigação Agrária e Veterinária, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
- CIISA-AL4AnimalS-Faculty of Veterinary Medicina, Universidade de Lisboa, 1300-477 Lisboa, Portugal
| | - Maria Conceição Baptista
- Department of Biotechnology and Genetic Resources of Instituto Nacional de Investigação Agrária e Veterinária, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
| | - Carla Cruz Marques
- Department of Biotechnology and Genetic Resources of Instituto Nacional de Investigação Agrária e Veterinária, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
| | - Rosa Maria Lino Neto Pereira
- Department of Biotechnology and Genetic Resources of Instituto Nacional de Investigação Agrária e Veterinária, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
- CIISA-AL4AnimalS-Faculty of Veterinary Medicina, Universidade de Lisboa, 1300-477 Lisboa, Portugal
| | - Nuno Carolino
- Department of Biotechnology and Genetic Resources of Instituto Nacional de Investigação Agrária e Veterinária, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal
- CIISA-AL4AnimalS-Faculty of Veterinary Medicina, Universidade de Lisboa, 1300-477 Lisboa, Portugal
| | - João Simões
- Department of Veterinary Sciences, Veterinary and Animal Research Centre (CECAV), AL4AnimalS, School of Agricultural and Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
- Correspondence: ; Tel.: +351-259-350-666
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Swelum AA, Ba-Awadh HA, Olarinre IO, Saadeldin IM, Alowaimer AN. Effects of adding mixed chicken and quail egg yolks to the cryodiluent on the quality of ram semen before and after cryopreservation. Front Vet Sci 2022; 9:1013533. [PMID: 36311647 PMCID: PMC9596808 DOI: 10.3389/fvets.2022.1013533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 09/16/2022] [Indexed: 11/04/2022] Open
Abstract
The effects of adding mixed chicken and Japanese quail egg yolks (EYs) to the cryodiluent on the quality of ram semen before freezing and post-thawing were evaluated. Additionally, the composition of chicken and quail egg EYs and their mixture were analyzed for results explanation. The semen was collected from rams (n = 5) and extended with cryodiluent containing the EY of chicken, quail or their mixture (1:1). The extended semen was chilled slowly to 5 °C within 2 h and equilibrated for 2 h, before frozen on the liquid nitrogen vapor and cryopreserved at -196 °C. The straws were evaluated before freezing and post-thawing for sperm motility, vitality and abnormality besides plasma-membrane and DNA integrities. The moisture, ash, protein, and fatty acid (FA) contents of chicken EY, quail EY and their mixture were analyzed. Sperm vitality, plasma membrane integrity and DNA integrity before freezing were significantly (P < 0.05) higher in quail EY than chicken EY and mixed EYs cryodiluent. The chicken EY extender significantly improved the vitality, plasma membrane and DNA integrities of post-thawed ram semen in comparison with quail EY or mixed EYs extenders. While, the post-thawing sperm abnormalities was lower (P ≤ 0.05) in quail EY than chicken EY and mixed EYs cryodiluent. The post-thawing sperm motion kinetics parameters were higher in quail EY than chicken EY and mixed EYs cryodiluent. The highest percentages of moisture, ash, saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs) were detected in quail EY had. While, the highest percentages of fat, protein and polyunsaturated fatty acids (PUFAs) were detected in chicken EY. In conclusion, using of chicken EY can improve total motility, vitality, plasma membrane integrity and DNA integrity of cryopreserved ram semen. While, using of quail EY can improve sperm abnormalities and kinetic motion parameters of cryopreserved ram semen. Mixing chicken and quail EYs added no value for post-thawing ram semen parameters.
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Affiliation(s)
- Ayman A. Swelum
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia,Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt,*Correspondence: Ayman A. Swelum
| | - Hani A. Ba-Awadh
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Isiaka O. Olarinre
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Islam M. Saadeldin
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia,Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Abdullah N. Alowaimer
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
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