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

Abstract

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 × 10 9 /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. K E Y W O R D Sampulla massage, angora goat, fertility, infrared thermography, semen, trans-rectal massage

Innovations in cryoconservation of animal genetic resources

“…It is important to note that poultry and stallions should never be collected using electroejaculation, and if possible, this technique should be avoided with goats (bucks) and used only following administration of sedation in boars, as they tend to be very sensitive to the electrical stimulation. If the use of an artificial vagina or electroejaculation is not possible, then alternative methods such as transrectal ultrasonic-guided massage of the accessory sex glands (Abril-Sánchez et al, 2017 or transrectal digital stimulation (Tekin et al, 2019) has recently been investigated with small ruminants. With these approaches for semen collection, fewer and potentially no electrical stimuli are used while a quality sample may be collected, which may mitigate animal welfare concerns.…”

The Main Aspects of Andrological Evaluation of Bucks

“…The prepuce and penis should be both inspected visually and by palpation to make sure there are no signs of injury, adhesions, or other pathologies. Palpation of the accessory glands is not as easily done as in bulls; however, it can be done using one or two fingers or by transrectal ultrasonography (Tekin et al,2019). Testicular traits are properties correlated with sperm production and animal fertility.…”

Use of Infrared Thermography during Ejaculation Process and Its Link with Semen Quality and Freezability in Dogs

“…Infrared thermography is common practice for different purposes in internal medicine and surgery, particularly as a diagnostic tool in small animals [ 4 , 5 , 6 , 7 , 8 ]. However, in reproduction, there are few reports related to pregnancy diagnosis, estrus detection, mastitis, or to the development of mammary tumors [ 8 , 9 , 10 , 11 , 12 , 13 ]. Infrared thermography in clinical animal andrology is considered in various species and specific information about its use for the definition of a thermal pattern of scrotal surface temperature is present above all in species with a pendulous scrotum [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ].…”