Semen collection by trans‐rectal digital stimulation and insemination campaign in goat

• Published in: Andrologia Vol. 52; no. 2; pp. e13458 - n/a
• Main Authors: Tekin, Koray, Cil, Beste, Alemdar, Havva, Olgac, Kemal Tuna, Tirpan, Mehmet Borga, Daskin, Ali, Stelletta, Calogero
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.03.2020
• Subjects: ampulla massage; angora goat; Artificial insemination; Ejaculation; fertility; Goats; infrared thermography; Motility; Pregnancy; Rectum; Semen; Thermography; trans‐rectal massage; Ultrasonography; United States > US; semen; infrared thermography; ampulla massage; trans-rectal massage; angora goat; fertility
• ISSN: 0303-4569; 1439-0272
• DOI: 10.1111/and.13458

The overall purpose of this study was to describe a method of semen collection via trans‐rectal digital massage (TDM) and to carry out a related fertility trial in Angora goat. Sixteen Angora bucks (ranging 1–4 years) and 28 nulliparous does (1–2 years) were used in this study. Semen samples were collected via trans‐rectal massage from 85.71% of the bucks in multiple attempts (18/21). The mean values of volume, pH, mass motility, total motility, concentration, viability, abnormal spermatozoa rate and ejaculation time were 0.64 ± 0.09 ml, 6.3 ± 0.21, 2.7 ± 0.34, 58.18 ± 5.1%, 3.68 ± 0.31 × 109/ml, 71.38 ± 7.12%, 18.22 ± 2.48% and 3.4 ± 0.33 min respectively. Oestrus was detected with teaser buck and confirmed by using infrared thermography and ultrasonography (US). The success rate of synchronisation was found as 71.4% (20/28). On Day 21, pregnancy diagnosis was performed trans‐rectally with US and the pregnancy rate was determined as 78.57% (11/14). TDM method of semen collection seems to be easily applicable to the buck and it could be a good alternative to collect semen as well as its use in artificial insemination campaign. Thermal monitoring is found to be a valuable tool to monitor the response to hormonal driven ovulatory synchronisation in Angora does during timed artificial insemination.