Papers by Posane S Y L V E S T E R Lebata
Lebata812025AJRAVS131371, 2025
Ticks are ectoparasites that act as vectors for transmission of various pathogens to wild and dom... more Ticks are ectoparasites that act as vectors for transmission of various pathogens to wild and domesticated animals and pose a serious threat to human health. The study aimed to determine the common tick species infesting canines in six villages within the Roma Valley. A cross-sectional study was conducted, during which dogs were randomly selected for tick collection. Approximately 15 dogs from each village were chosen as experimental units, resulting in a total of 90 dogs included in the experiment. The animals were classified by age into three categories: young (below one year of age), middle (puberty stage, between 7 and 10 months), and adults (one year and older). To comprehend the epidemiology of tick-borne diseases, it is essential to identify ticks on dogs of various age groups. This is due to the complex life cycle of ticks, which consists of four stages, each displaying distinct behaviors related to host attachment and feeding duration. Ticks
A study was conducted with 204 Merino ewes as experimental units to assess the effectiveness of f... more A study was conducted with 204 Merino ewes as experimental units to assess the effectiveness of four estrus synchroni-zation protocols. The ewes were divided into four groups: TRT A (Control), TRT B (Intravaginal sponges
for 12 days), TRT C (Double prostaglandin injections on days 0 and 11) and TRT D (Intravaginal sponges for 13 days, a single prostaglandin injection on day 12, plus PMSG on day 13). Six rams were used to detect heat, with standing to be mounted as the primary indicator of estrus. There were no significant differences (p>0.05) in estrus response rates among the groups: 94.10% for TRT B, 96.20% for TRT D, and 90.20% for both TRT A and TRT C. Additionally, the time from treatment withdrawal to the onset and end of estrus showed no significant variation (p>0.05). The duration of estrus differed significantly among the treatments (TRT D, TRT A, and TRT C) with notable differences at specific time intervals: 48h and 36h for TRT D, and 24h for TRT C (p<0.05). Significant differences were also found between TRT B and TRT D at 48h and 60h post-treatment withdrawal. Additionally, TRT D showed high significance at 24h and 36h intervals. At 72 hours, both TRT C and TRT D were significant, with TRT D remaining significant at 84h (p<0.05). Overall, combination treatment (TRT D) was more effective in synchronizing estrus in Merino ewes, resulting in a higher response rate and shorter interval from treatment withdrawal to estrus onset.
Keywords: Estrus, Progesterone, Prostaglandin, PMSG, Synchronization.
Lebata812025AJRAVS130818.pdf, 2025
Sheep production system in Lesotho is based on natural mating hence reproduction performance of t... more Sheep production system in Lesotho is based on natural mating hence reproduction performance of these sheep falls below the expected lamb crop per year. The study was carried out to evaluate the comparative effectiveness of four different synchronization protocols on the reproductive performance of Merino ewes during the autumn breeding season. The ewes were inseminated
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Papers by Posane S Y L V E S T E R Lebata
for 12 days), TRT C (Double prostaglandin injections on days 0 and 11) and TRT D (Intravaginal sponges for 13 days, a single prostaglandin injection on day 12, plus PMSG on day 13). Six rams were used to detect heat, with standing to be mounted as the primary indicator of estrus. There were no significant differences (p>0.05) in estrus response rates among the groups: 94.10% for TRT B, 96.20% for TRT D, and 90.20% for both TRT A and TRT C. Additionally, the time from treatment withdrawal to the onset and end of estrus showed no significant variation (p>0.05). The duration of estrus differed significantly among the treatments (TRT D, TRT A, and TRT C) with notable differences at specific time intervals: 48h and 36h for TRT D, and 24h for TRT C (p<0.05). Significant differences were also found between TRT B and TRT D at 48h and 60h post-treatment withdrawal. Additionally, TRT D showed high significance at 24h and 36h intervals. At 72 hours, both TRT C and TRT D were significant, with TRT D remaining significant at 84h (p<0.05). Overall, combination treatment (TRT D) was more effective in synchronizing estrus in Merino ewes, resulting in a higher response rate and shorter interval from treatment withdrawal to estrus onset.
Keywords: Estrus, Progesterone, Prostaglandin, PMSG, Synchronization.
for 12 days), TRT C (Double prostaglandin injections on days 0 and 11) and TRT D (Intravaginal sponges for 13 days, a single prostaglandin injection on day 12, plus PMSG on day 13). Six rams were used to detect heat, with standing to be mounted as the primary indicator of estrus. There were no significant differences (p>0.05) in estrus response rates among the groups: 94.10% for TRT B, 96.20% for TRT D, and 90.20% for both TRT A and TRT C. Additionally, the time from treatment withdrawal to the onset and end of estrus showed no significant variation (p>0.05). The duration of estrus differed significantly among the treatments (TRT D, TRT A, and TRT C) with notable differences at specific time intervals: 48h and 36h for TRT D, and 24h for TRT C (p<0.05). Significant differences were also found between TRT B and TRT D at 48h and 60h post-treatment withdrawal. Additionally, TRT D showed high significance at 24h and 36h intervals. At 72 hours, both TRT C and TRT D were significant, with TRT D remaining significant at 84h (p<0.05). Overall, combination treatment (TRT D) was more effective in synchronizing estrus in Merino ewes, resulting in a higher response rate and shorter interval from treatment withdrawal to estrus onset.
Keywords: Estrus, Progesterone, Prostaglandin, PMSG, Synchronization.