Prof. Dr. drh. Tongku Nizwan Siregar, M.P

Tentang Saya (About Me)

I was born in Rantau Prapat, September 1st 1969. I completed my veterinary degree in 1995, then in 1998 I graduated my master degree in veterinary science.  I completed my doctoral degree in biology reproduction in 2003. I teach animal physiology reproduction, Technology reproduction, and reproduction disorders. My research focus is on the development of aceh cattle productivity, and some of the results have been published in reputable national and international journals. Currently, I am conducting research on early embryo death and repeat breeding in cows. I was born in Rantau Prapat, September 1st 1969. I completed my veterinary degree in 1995, then in 1998 I graduated my master degree in veterinary science.  I completed my doctoral degree in biology reproduction in 2003. I teach animal physiology reproduction, Technology reproduction, and reproduction disorders. My research focus is on the development of aceh cattle productivity, and some of the results have been published in reputable national and international journals. Currently, I am conducting research on early embryo death and repeat breeding in cows. 

email siregar[at]unsyiah.ac.id

idGaruda idThomson idScopus idGoogleScholar

Publikasi (Publications)

Jurnal (Journals)

Aswadi, Husnurrizal, Mulyadi Adam, Tongku Nizwan Siregar, 2021, The Effect of PGF2? Injection on Post-Thaw Motility in Sperm of Nubian Goats, Buletin Peternakan, Volume, 1-5, 0126-4400/E-ISSN-2407-876X.

Muharriza Nasution , Tongku Nizwan Siregar , Arman Sayuti , Hafizuddin , Rosmaidar , Mulyadi Adam, 2021, Identification of factors causing reproductive disorders of the cow found in North Labuhanbatu Regency, North Sumatera Province, Livestock and Animal Research, Volume, 80-86, p-ISSN 2721-5326 e-ISSN 2721-7086.

Cut Nila Thasmi, Husnurrizal, Muslim Akmal, Sri Wahyuni, Tongku Nizwan Siregar, 2021, THE BLOOD BIOCHEMICAL PROFILE IN ACEH COWS WITH REPEAT BREEDING, Jurnal Veteriner, Vol. 2, 26 - 32, pISSN: 1411-8327; eISSN: 2477-5665.

Adhea Prestiya, Tongku Nizwan Siregar, Husnurrizal, Sri Wahyuni, Eka Meutia Sari, Hafizuddin, dan Budianto Panjaitan, 2020, The improvement of sperm motility in Nubian goat after PGF2? administration in andromed semen diluents, Agripet, Vol 20, 32-37, 1411-4625.

Novika Ayuni Rambe, Tongku Nizwan Siregar, Teuku Armansyah TR, Gholib, Budianto Panjaitan, Mulyadi Adam, dan Dasrul, 2020, Effectiveness of different commercial prostaglandin hormone administration on the percentage of estrous in cattles in South Labuhanbatu, North Sumatera, Agripet, Volume, 105-110, 2460-4534.

Agung Prayogi, Jauhari, Nellita Meutia, Yusmadi, Tongku Nizwan Siregar, Juli Melia, Budianto Panjaitan, Nuzul Asmilia, 2020, Profil Biokimia Darah Sapi Aceh pada Intensitas Estrus yang BerbedaProfil Biokimia Darah Sapi Aceh pada Intensitas Estrus yang Berbeda, Jurnal Veteriner, Volume, 470-475, 2477-5665.

Amalia Sutriana, Fuza Khoiriah, Husnurrizal, Tongku Nizwan Siregar, Rasmaidar, Herrialfian, 2020, Pengaruh Pemberian PGF2? terhadap Peningkatan Kualitas Spermatozoa Kambing Boerka, ACTA VETERINARIA, Volume, 15-21, 2337-4373.

JULI MELIA, TONGKU NIZWAN SIREGAR, LUTHFY ALFAHMI1, HUSNURRIZAL, HENDRA SAUMAR, MUKHTAR, NELLITA MEUTIA, BUDIANTO PANJAITAN, TEUKU ARMANSYAH, 2020, Short Communication: Relationship between interferon-tau level (IFN- ?) and embryo mortality incident in Aceh cattle, Biodiversitas, Volume, 5758-5762, 1412-033X.

JULI MELIA, TONGKU NIZWAN SIREGAR, LUTHFY ALFAHMI, HUSNURRIZAL, HENDRA SAUMAR, MUKHTAR, NELLITA MEUTIA, BUDIANTO PANJAITAN, TEUKU ARMANSYAH, 2020, Relationship between interferon-tau level (IFN- ?) and embryo mortality incident in Aceh cattle, Biodiversitas, Volume, 5758-5762, 1412-033X.

Tongku Nizwan Siregar, Teuku Armansyah, Budianto Panjaitan*, Gholib Gholib, Herrialfian Herrialfian, Amalia Sutriana, Zainal Abidin, Muhammad Aufa Reynaldi, FathurRazak, Yulli Artaliani, Yuswar Yuswar, 2019, Changes in Cervical Mucus as an Indicator of Fertility in Aceh Cattle, Advances in Animal and Veterinary Sciences, Volume, 306-314, 2307-8316.

Tongku Nizwan Siregar , Uzir Uzir , Mukhtar Mukhtar, Zainuddin Zainuddin, Muhammad Agus Nashri Abdullah, Farid Wajdi, Juli Melia and Budianto Panjaitan, 2019, Environmental Temperature Reduces Conception Rate and Increases Embryonic Mortality in Aceh Cattle , International Journal of Veterinary Science, vol 8 , 229-234, 23043075, 23054360.

Budianto Panjaitan, Citra Chyntia Helwana, Nellita Meutia, Yusmadi, Tongku Nizwan Siregar, Dasrul, dan Teuku Armansyah TR, 2019, Correlation between progesterone levels in early luteal phase and embryonic death in Aceh cattle, Agripet, Vol 19, 107-112, 1411-4625.

Arman Sayuti, Khairiah, Tongku Nizwan Siregar, Juli Melia, Syafruddin, Erdiansyah Rahmi, Herrialfian, Mahdi Abrar, Budianto Panjaitan, Razali Daud, 2019, Determination of Gestational Age and Observation of Kacang Goat Fetal Development during 60 Days of Pregnancy by Using Transcutaneous Ultrasonography, Jurnal Veteriner, Vol. 2, 534-540, 1411-8327.

Eka Meutia Sari, Satria Tanjung, Dewi Ratna Sari, Muslim Akmal, Tongku Nizwan Siregar, and Cut Nila Thasmi, 2019, THE IMPROVEMENT OF SEMEN QUALITY AND TESTOSTERONE LEVEL OF BALI CATTLE AFTER PROSTAGLANDIN F2? ADMINISTRATION, Jurnal Kedokteran Hewan, Vol 13, 79-82, 1978-225X.

Mulyadi Adam, Raja Nurul Huda, Widya Zahara, Tongku Nizwan Siregar, Hamdan, Sri Wahyuni, Cut Nila Thasmi, Rosmaidar, 2018, Comparison of estrous performance and estradiol level between Kacang and Nubian Goats induced with PGF 2 alfa, Jurnal Sain Veteriner, Vol 36, 32-39, P-ISSN: 0126-0421; E-ISSN: 2407-3733.

Teuku Armansyah, Edi Rusmansyah Putra Barat, Cut Vela Risqa Handini, Dwinna Aliza, Amalia Sutriana, ?Hamdan Hamdan, Budianto Panjaitan, Arman Sayuti and Tongku Nizwan Siregar4,*, 2018, Concentration and motility of spermatozoa and testosterone level of kacang goat after seminal vesicle extract administration, Open Veterinary Journal, Volume, 406-410, 2226-4485.

Cut Nila Thasmi, Tongku Nizwan Siregar, Sri Wahyuni, Dwinna Aliza, Budianto Panjaitan, Nazaruddin Nazaruddin, Firschilia Nurul Sabila, Miranda Fallatanza, 2018, Anatomical and histological changes of uterine horn of Aceh cattle with repeat breeding, JOURNAL OF ADVANCED VETERINARY AND ANIMAL RESEARCH, Volume, 445-453, 2311-7710.

Syafruddin Syafruddin1, Tongku Nizwan Siregar, Azrina Azrina, Teuku Armansyah, Budianto Panjaitan, Dwinna Aliza, Amalia Sutriana, Zuhrawati Zuhrawati, Rosmaidar Rosmaidar, Roslizawaty Roslizawaty, 2018, Histological description of aceh cattle ovary cryopreserved by various cryoprotectants, Indian J. Anim. Res, Volume, 1223-1226 , 0367-6722.

Yezi Gita Rahayu, Tongku Nizwan Siregar, Gholib, Cut Nila Thasmi, Herrialfian, Razali Daud, Zuhrawati, Hamdan, Rasmaidar, 2018, The Comparison of Waringin Sheep Progesterone Level during Estrous Cycle Induced by PGF2? and Combination of PGF2? and GnRH, Jurnal Ilmiah Peternakan Terpadu , Vol. 6, 101-105, 1411-8327.

Juli Melia, Fauziah Fauziah, Hamdan Hamdan, Budianto Panjaitan, Syafruddin Syafruddin, Teuku Armansyah, Tongku Nizwan Siregar, 2018, The Image Of Embryo And Fetal Of Etawa Crossbred Goats Using Ultrasonography At Different Gestational Ages, Jurnal Kedokteran Hewan, 12 (2), 47-52, ISSN: 1978-225X.

Teuku Armansyah, Edi Rusmansyah Putra Barat, Cut Vela Risqa Handini, Dwinna Aliza, Amalia Sutriana, Hamdan Hamdan, Budianto Panjaitan, Arman Sayuti, and Tongku Nizwan Siregar, 2018, Concentration and motility of spermatozoa and testosterone level of kacang goat after seminal vesicle extract administration, Open Veterinary Journal, Volume, 406-410, 2218-6050.

Tongku Nizwan Siregar1, Farid Wajdi2, Muslim Akmal1, Yudha Fahrimal1, Mulyadi Adam1, Budianto Panjaitan1, Amalia Sutriana1, Razali Daud1, Teuku Armansyah1, Nellita Meutia2, 2017, EMBRYONIC DEATH INCIDENTS DUE TO HEAT STRESS AND EFFECT OF THERAPY WITH GONADOTHROPIN RELEASING HORMONE (GnRH) IN ACEH CATTLE, VETERINARIJA IR ZOOTECHNIKA (Vet Med Zoot)., 75 (9, 70-74, 1392-2130.

Tongku Nizwan Siregar1, Iin Agustina1, Dian Masyitah2, Al Azhar3, Dasrul1, Cut Nila Thasmi1, Rusli Sulaiman4, Razali Daud4, 2017, Physical Properties of Cervical Mucus of Repeat Breeder Aceh Cattle, Jurnal Veteriner, 18(3), 378-382, 1411-8327.

Teuku Armansyah, Tongku Nizwan Siregar, Dwinna Aliza, Juli Melia, Nellita Meutia, Budianto Panjaitan, Hafizuddin Hafizuddin, Mulyadi Adam, Mahdi, 2017, Aceh Cattle Follicle Dynamic Under Environmental Heat Stres, Jurnal Kedokteran Hewan, 11 (3), 86-90, ISSN: 1978-225X.

Mulyadi Adam, Tongku Nizwan Siregar, Sri Wahyuni, Gholib Gholib, Cut Erika Ramadhana, Riski Ananda, Afifuddin Afifuddin, 2017, Steroid Level And Pregnancy Rate Of Aceh Cows In Response To Ovulation Induction Using Presynch- Ovsynch Method, Jurnal Kedokteran Hewan, 11 (4), 138-141, ISSN: 1978-225X.

Cut Nila Thasmi, Tongku Nizwan Siregar*, Sri Wahyuni, Dwinna Aliza, Hamdan Hamdan, Budianto Panjaitan, Nuzul Asmilia, Husnurrijal Husnurrijal, 2016, Estrus Performance and Steroid Level of Repeat Breeding Aceh Cattle Synchronized With Pgf2?, Veterinaria, 66(1), 36-40, 0372-6827 (ISSN); 2233-1360 (EISSN).

Tongku N. Siregar, Juli Melia, Rohaya, Cut Nila Thasmi, Dian Masyitha, Sri Wahyuni, Juliana Rosa, Nurhafni, Budianto Panjaitan, and Herrialfian, 2016, Determining Proportion of Exfoliative Vaginal Cell during Various Stages of Estrus Cycle Using Vaginal Cytology Techniques in Aceh Cattle, Veterinary Medicine International, 2016, 1-5, -.

Muslim Akmal1, Tongku Nizwan Siregar2, Sri Wahyuni3,4, Hamny4, Mustafa Kamal Nasution5, Wiwik Indriati6, Budianto Panjaitan7 and Dwinna Aliza8, 2016, The expression of cyclic adenosine monophosphate responsive element modulator in rat sertoli cells following seminal extract administration, Veterinary World, Vol 9 , 1001-1005, EISSN: 2231-0916.

Gholib G, Sri Wahyuni, Okta Hilda Kadar, Mulyadi Adam, Triva Murtina Lubis, Azhar A, Muslim Akmal, Tongku Nizwan Siregar, Teuku Armansyah, Taufiq Purna Nugraha, 2016, Measurement Of Serum Testosterone In Kacang Goat By Using Enzyme-Linked Immunosorbent Assay (Elisa) Technique: The Importance Of Kit Validation, Jurnal Kedokteran Hewan, 10 (1), 32-36, ISSN : 1978-225X.

Arman Sayuti, Juli Melia, Ira Khubairoh Marpaung, Tongku Nizwan Siregar, Syafruddin S, Amiruddin A, Budianto Panjaitan, 2016, Diagnosis Kebuntingan Dini Pada Kambing Kacang (Capra sp.) Menggunakan Ultrasonografi Transkutaneus, Jurnal Kedokteran Hewan, 10 (1), 63-67, ISSN : 1978-225X.

Sri Wahyuni, Srihadi Agungpriyono, I. Ketut Mudite Adnyane, Hamny Hamny, Muhammad Jalaluddin, Gholib Gholib, Muslim Akmal, Mulyadi Adam, Dwinna Aliza, Tongku Nizwan Siregar, 2016, Studi Histokimia Lektin Pada Sel-Sel Spermatogenik Testis Muncak (Muntiacus muntjak muntjak), Jurnal Kedokteran Hewan, 10 (1), 82-85, ISSN : 1978-225X.

Tongku Nizwan Siregar, Hafizuddin Hafizuddin, Muslim Akmal,Arman Sayuti, Dwinna Aliza, Juli Melia, Teuku Armansyah, Syafruddin Syafruddin, Budianto Panjaitan and Durrah Luthfiah Adani, 2016, Follicle Dynamics of Aceh Cattle During Estrous Cycle, Global Veterinaria, 17 (5), 424-429, ISSN: 1992-6197.

Tongku Nizwan Siregar, Hamdan Hamdan, Ginta Riady, Budianto Panjaitan, Dwinna Aliza, Enita Febri Pratiwi, Teguh Darianto, Husnurrizal, 2015, Efficacy of Two Estrus Synchronization Methods in Indonesian Aceh Cattle, International Journal of Veterinary Science, 4(2), 87-91, P-ISSN: 2304-3075; E-ISSN: 2305-4360.

Tongku Nizwan Siregar*, Hamdan Hamdan, Ginta Riady, Budianto Panjaitan, Dwinna Aliza, Enita Febri Pratiwi, Teguh Darianto and Husnurrizal, 2015, Efficacy of Two Estrus Synchronization Methods in Indonesian Aceh Cattle, International Journal of Veterinary Science, 4(2), 87-91, P-ISSN: 2304-3075; E-ISSN: 2305-4360.

Muslim Akmal, Aulanni’am A, M. Aris Widodo, Sutiman B. Sumitro, Basuki B. Purnomo, Tongku Nizwan Siregar, Muhammad Hambal, Amiruddin A, Syafruddin S, Dwinna Aliza, Arman Sayuti, Mulyadi Adam, T. Armansyah, Erdiansyah Rahmi, 2015, Inhibin B Menurunkan Konsentrasi Follicle Stimulating Hormone (Fsh) Pada Tikus Putih (Rattus norvegicus): Upaya Pengembangan Kontrasepsi Hormon Pria Berbasis Peptida, Jurnal Kedokteran Hewan, 9 (1) , 42-46, ISSN : 1978-225X.

Ginta Riady, Tongku Nizwan Siregar, Juli Melia, Hamdan H, Reni Ayunanda, 2015, Gambaran Involusi Uterus Kambing Kacang (Capra Sp.) Berdasarkan Pengamatan Dengan Ultrasonografi Transkutaneus., Jurnal Kedokteran Hewan, 9 (1), 24-28, ISSN : 1978-225X.

Muslim Akmal, Tongku Nizwan Siregar, Sri Wahyuni, Muhammad Hambal, Sugito S, Amiruddin A, Syafruddin S, Roslizawaty R, Zainuddin Z, Mulyadi Adam, Gholib G, Cut Dahlia Iskandar, Rinidar R, Nuzul Asmilia, Hamny H, Joharsyah J, Suriadi S, 2015, Pemberian Ekstrak Epididimis Berpotensi Meningkatkan Kualitas Spermatozoa Kambing Jantan Lokal, Jurnal Kedokteran Hewan, 9 (2), 168-173, ISSN : 1978-225X.

Tongku Nizwan Siregar, Muslim Akmal, Sri Wahyuni, Hermawaty Tarigan, Mulyadi M, Idawati Nasution, 2014, Pemberian Ekstrak Vesikula Seminalis Meningkatkan Kualitas Spermatozoa Tetapi Tidak Memengaruhi Konsentrasi Spermatozoa Dan Testosteron Tikus Putih (Rattus norvegicus), Jurnal Kedokteran Hewan, Vol. 8, 90-93, 1978-225X.

Amiruddin, Tongku Nizwan Siregar, Hamdan, Azhari, Jalaluddin, Zulkifli, dan Andre Afriadi Rahman, 2014, Pengaruh Pemberian Ekstrak Hipofisa Sapi Terhadappeningkatan Produktivitas Ayam Petelur Pada Fase Akhir Produksi, Jurnal Kedokteran Hewan, Vol. 8, 80-84, 1978-225X.

Rahmandi, Tongku Ni zwan Siregar, Muslim Akmal, Teuku Armansyah , dan Syafruddin, 2013, Peningkatan Aktivitas Luteolitik Setelah Pemberian Ekstrak Vesikula Seminalis Sapi Pada Tikus Putih (Rattus norvegicus), Jurnal Kedokteran Hewan, Vol. 7, 65-70, 1978-225X.

Wida Puspita Arum , Tongku Nizwan Siregar , dan Juli Melia, 2013, EFEK PEMBERIAN EKSTRAK HIPOFISA SAPI TERHADAP RESPONS SUPEROVULASI SAPI ACEH, Jurnal Medikan Veterinaria, 7, 71-74, 0853 - 1943.

Juli Melia, Delli Lefiana, Tongku Nizwan Siregar, Jalaluddin, 2013, PROSES REGRESI CORPUS LUTEUM SAPI ACEH YANG DISINKRONISASI ESTRUS MENGGUNAKAN PROSTAGLANDIN F2 ALFA (PGF2α), Jurnal Medikan Veterinaria, 7, 23-17, 0853 - 1943.

Tongku Nizwan Siregar , Indah Kesuma Siregar , Teuku Armansyah , Syafruddin , Arman Sayuti , Hamdani, 2013, Tampilan Reproduksi Kambing Lokal Hasil Induksi Superovulasi dengan Ekstrak Pituitary Sapi, Jurnal Veteriner, Vol. 1, 91-98, 1411 - 8327.

Amiruddin A, Tongku Nizwan Siregar, Teuku Armansyah, Hamdan H, Aris munandar, Muhammad Rifki, 2013, Level Steroid Sapi Aceh Yang Diinduksi Dengan Pregnant Mare’s Serum Gonadotropin (Pmsg) Dan Follicle Stimulating Hormone (FSH), Jurnal Kedokteran Hewan, 7 (2), 120-124, ISSN : 1978-225X.

Tongku Nizwan Siregar , Maikhar Gita Eldora , Juli Melia , Budianto Panjaitan , Yusmadi , dan Rina Aulia Barus, 2012, Kehadiran Folikel Dominan Pada Saat Inisiasi Superovulasi Menurunkan Respons Superovulasi Sapi Aceh., Jurnal Kedokteran Hewan, Vol. 6, 67-71, 1978-225X.

Hafizuddin , Tongku Nizwan Siregar , Muslim Akmal , Juli Melia , Husnurrizal , dan Teuku Armansyah, 2012, Perbandingan Intensitas Berahi Sapi Aceh Yang Disinkronisasi Dengan Prostaglandin F2 Alfa Dan Berahi Alami, Jurnal Kedokteran Hewan, Vol. 6, 81-83, 1978-225X.

Hamdan, Dian Nurcahaya , Tongku Nizwan Siregar , Budianto Panjaitan, dan Husnurrizal, 2012, Kinerja Reproduksi Kambing Lokal Yang Diinduksi Superovulasi Dengan Antiserum Inhibin., Jurnal Kedokteran Hewan, Vol. 6, 1-5, 1978-225X.

Hafizuddin, Tongku N. Siregar, dan Muslim Akmal, 2012, HORMON DAN PERANNYA DALAM DINAMIKA FOLIKULER PADA HEWAN DOMESTIK, Jesbio, Vol. 1, 21-24, 2302-1705.

Hafizuddin, Wenny Novita Sari, Tongku Nizwan Siregar, Hamdan, 2011, Persentase Berahi Dan Kebuntingan Kambing Peranakan Ettawa (Pe) Setelah Pemberian Beberapa Hormon Prostaglandin Komersial., Jurnal Kedokteran Hewan, Vol. 5, 84-88, 1978-225X.

Arman Sayuti, Herrialfian, T. Armansyah, Syafruddin, Tongku Nizwan Siregar, 2011, Penentuan Waktu Terbaik Pada Pemeriksaan Kimia Urin Untuk Diagnosis Kebuntingan Dini Pada Sapi Lokal., Jurnal Kedokteran Hewan, Vol. 5, 23-26, 1978-225X.

Teuku Armansyah , Al-Azhar , Tongku Nizwan Siregar, 2011, Analisis Isozim untuk Mengetahui Variasi Genetik Sebagai Upaya Pemurnian Ras Sapi Aceh, Jurnal Veteriner, Vol. 1, 254-261, 1411 - 8327.

Tongku N. Siregar, T. Armansyah, Syafruddin, dan Arman Sayuti, 2010, Tampilan Reproduksi Kambing Lokal yang Mengalami Induksi Berahi dengan Sistem Sinkronisasi Singkat, Jurnal Veteriner, Vol. 1, 25-29, 1411-8327.

Syafruddin, Tongku N. Siregar, Herrialfian, T. Armansyah, Arman Sayuti, dan Roslizawaty, 2010, Efektivitas Pemberian Ekstrak Vesikula Seminalis terhadap Persentase Berahi dan Kebuntingan pada Kambing Lokal, Jurnal Kedokteran Hewan, Vol. 4, 57-61, 1978-225X.

Amiruddin, Tongku Nizwan Siregar, Amalia Sutriana, Dwinna Aliza, T. Armansyah, 2010, Karakterisasi Protein Inhibin dari sel Granulosa Hasil Kultur dan Non Kultursebagai Dasar Produksi Antibodi Monoklonal Inhibin, Jurnal Kedokteran Hewan, Vol 4 , 11-17, 1978-225X.

Tongku Nizwan Siregar, Teuku Armansyah, Arman Sayuti, Syafruddin, 2010, Tampilan Reproduksi Kambing Betina Lokal yang Induksi Berahinya Dilakukan dengan Sistem Sinkronisasi Singkat, Jurnal Veteriner, 11, 30-35, 1411 - 8327.

Tongku Nizwan Siregar, 2009, PROFIL HORMON ESTROGEN DAN PROGESTERON PADA SIKLUS BERAHI KAMBING LOKAL, Jurnal Kedokteran Hewan, Vol. 3, 240-245, 1978-225X.

Muslim Akmal, Aulanni�am, Rasmaidar, Dasrul, Tongku N. Siregar, Erdiansyah Rahm, 2008, EFEK PAPARAN DEKOK BIJI PINANG ( Areca catechu ) TERHADAP MOTILITAS SPERMATOZOA TIKUS ( Rattus norvegicus ): UPAYA MENEMUKAN KANDIDAT ANTIFERTILITAS PRIA T, Jurnal Kedokteran Hewan, Vol. 2, 137-142, 1978-225X.

Tongku Nizwan Siregar, 2008, Upaya Meningkatkan Intensitas Berahi Pada Kerbau Dalam Hubungannya Dengan Peningkatan Angka Konsepsi Hasil Inseminasi Buatan, Jurnal Ilmu-ilmu Peternakan, Vol. X, 69-74, 1410 - 7791.

Arman Sayuti, Tongku Nizwan Siregar, Muslim Akmal, Hamdan, Hamdani, 2007, PENGARUH UKURAN DAN JUMLAH FOLIKEL PER OVARI TERHADAP KUALITAS OOSIT KAMBING LOKAL, Jurnal Kedokteran Hewan, Vol. 1, 36-42, 1978-225X.

Tongku Nizwan Siregar, Aulanni'am, Yulianus Linggi, Ginta Riady, Hamdan, dan T. Armansyah, 2006, Profil titer antiserum-inhibin hasil induksi inhibin 32 kDa pada kelinci sebagai kandidat vaksin untuk induksi superovulasi, Jurnal Sain Veteriner, 29, 34-37, 1411 - 8327.

Tongku Nizwan Siregar dan Hamdan, 2004, Evaluasi Daya Tahan Hidup Spermatozoa Kambing Peranakan Etawah dalam Beberapa Pengencer Sederhana, Jurnal Sain Veteriner, 22, 60-64, 1411 - 8327.

Tongku Nizwan Siregar, 2002, Pengukuran Profil Progesteron sebagai suatu Metode Diagnosis Kebuntingan Dini dan Kelahiran Kembar pada Domba Lokal, Media Kedokteran Hewan, 18, 45-49, 2015-8930.

Ginta Riady, Tongku Nizwan Siregar, 2001, EFFECT OF AN INTRAVAGINAL PROGESTERONE IMPLANT ON SEX RATIO IN BEEF CATTLE, Jurnal Sain Veteriner, 19, 41-47, 1411 - 8327.

Prosiding (Proceedings)

Juli Melia, Baroli Sadri, Tongku N. Siregar, Ginta Riady, Nuzul Asmilia, Muhammad Hanafiah4, Budianto Panjaitan, 2020, The Effectiveness of Lugol for Endometritis Therapy in Aceh Cow, E3S Web of Conferences, 1st ICVAES 2019, Unsyiah, 12 Desember 2019, E3S Web of Conferences, E3S Web of Conferences, 0, 01008.

ri Wahyuni, Gholib Gholib, Rizki Maulana, Dasrul Dasrul, Tongku N. Siregar, Hamny Hamny, Muhammad Jalaluddin, Fadli A. Gani, Mudhita Z. Ritonga, Muslim Akmal, 2020, The correlation between spermatozoa morphometry and the testosterone levels in the epididymis of aceh cow, E3S Web of Conferences, 1st ICVAES 2019, Unsyiah, 12 Desember 2019, E3S Web of Conferences, E3S Web of Conferences, 0, 01008.

Budianto Panjaitan, Almira Dewi, Fadli FR Nasution, Mulyadi Adam, Tongku N. Siregar, Cut N. Thasmi, and Syafruddin Syafruddin, 2020, Comparison of Estrous Performance and Progesterone Level of Kacang Goats Induced by PGF2? Versus Ovsynch Protocol, E3S Web of Conferences, 1st ICVAES 2019, Unsyiah, 12 Desember 2019, E3S Web of Conferences, E3S Web of Conferences, 0, 01008.

Nellita Meutia; Tongku Nizwan Siregar; Sugito; Juli Melia, 2014, Pengaruh stres panas terhadap intensitas berahi sapi aceh, Improving the quality of animal health professional services for environment animal and human healthy and safety, Konferensi Ilmiah Veteriner Nasional ke-13 Perhimpunan Dokter Hewan Indonesia ke-13, Palembang, 23-26 November 2014, PDHI, Jakarta, PDHI, Jakarta, 57-58, -.

Training/Diklat (Workshops)

08-12-2014, Pelatihan Teknik Imunohistokimia, FKH Unsyiah, Lab. Riset Unsyiah
30-11-2014, Peran Mahasiswa dalam Melestarikan Sapi Aceh: Aset Tanah Rencong yang Diambang Kepunahan, HIMPARSIA, FKH Unsyiah
12-11-2014, Revisi dan Remodelling Kurikulum, 7 in 1 IDB, Universitas Syiah Kuala
06-11-2014, Pelatihan Teknik ELISA dalam Bidang Sain Veteriner, FKH Unsyiah, Lab. Riset Terpadu
31-10-2014, Understanding ISO 9001:2008 Training Course, BSI, FKH Unsyiah
25-06-2014, Pengelolaan dan Akreditas Jurnal, Fakultas Keperawatan, Fakultas Keperawatan
11-06-2014, Pelatihan Proposal Pengabdian Kepada Masyarakat, LPM Unsyiah, LPM Unsyiah
16-03-2014, Penulisan Karya Ilmiah/Skripsi, FKH Unsyiah, FKH Unsyiah
08-03-2014, Pelatihan IB dan Pemeriksaan Kebuntingan, FKH Unsyiah, Lab. Reproduksi
18-02-2014, Behavioral and Earthquake Science: From Geology to Animal Perception, Syiah Kuala University and Natural Resources and Life Sciences, Vienna, Austria, Balai Senat Unsyiah
31-12-2013, Penulisan Artikel dan Penerbitan Jurnal Ilmiah, PPs Unsyiah, PPs Unsyiah
31-12-2013, Seminar Hasil Penelitian 2013, Lemlit Unsyiah, Lemlit Unsyiah
04-12-2013, Seminar Hasil Penelitian 2013, Lemlit Unsyiah, Lemlit Unsyiah

Penghargaan (Awards)

03-09-2007, Dosen Berprestasi I Unsyiah, Unsyiah, Unsyiah, Indonesia.

26-05-2014, Pengawasan Ujian Nasional Kabupaten Pidie Jaya, Unsyiah, Pidie Jaya, Indonesia.

17-06-2014, Penanggungjawab Lokasi SBMPTN, Panitia SMBPTN, Unsyiah, Indonesia.