Tryptophan

…Skatole, in turn, is a product of the bacterial breakdown of tryptophan in the large intestine. Although it is not a sex hormone, it is closely related to the function of androstenone…

aximum, average, and median values. Statistical analysis was performed only for compounds detected in at least six samples per group. Table 6. Indole, skatole, androstenol, and androsterone content in meat (ng/g). Groups Item p-Value C E1 E2 Undetectable - - - Average 43.7 ± 20.61 32.7 ± 20.21 33.0 ± 12.06 Indole Minimum 18.4 10.9 10.9 0.301 Maximum 80.2 76.8 48.9 Median 39.9 28.8 32.8 Undetectable - 1 - Average 19.1 ± 13.12 9.9 ± 4.36 11.5 ± 6.20 Skatole Minimum 3.7 4.3 1.2 0.289 Maximum 40.7 17.4 19.8 Median 16.6 10.4 10.9 Undetectable - - - Average 59.6 a ± 9.50 70.9 b ± 13.29 67.0 ab ± 10.41 Androstenol Minimum 49.7 57.4 55.7 0.025 Maximum 78.0 96.2 88.2 Median 56.4 66.8 64.2 Undetectable 6 2 3 Average 120.7 141.3 147.6 Androsterone Minimum 25.1 40.8 43.6 - Maximum 169.7 331.7 386.7 Median 143.9 136.5 112.4 a, b—mean values marked with different letters differ significantly (p ≤ 0.05). Table 7. Indole, skatole, androstenol, and androsterone content in backfat (ng/g). Groups Item p-Value C E1 E2 Undetectable 6 5 6 Average 11.0 13.0 53.3 Indole Minimum 9.6 10.0 11.9 - Maximum 12.4 14.6 171.6 Median 11.0 13.5 14.8 Undetectable Average 10 10 9 Skatole Minimum - - - 405.0 Maximum Median Undetectable - - - Average 493.0 a ± 193.77 996.6 b ± 623.01 779.2 ab ± 517.30 Androstenol Minimum 307.9 309.4 362.8 0.018 Maximum 974.7 2214.1 2007.8 Median 457.9 816.5 573.9 Undetectable 1 3 Average 6017.8 4646.7 9 Androsterone Minimum 1463.2 203.9 - 6823.1 Maximum 13,475.1 12,294.1 Median 3321.0 3278.1 a, b—mean values marked with different letters differ significantly (p ≤ 0.05). The highest average indole content was determined in the meat of boars from group C, whereas the lowest one was in the meat of boars from group E1. A similar trend was observed for

…Borrisser-Pairó et a reduction in tryptophan availability by modifying the al. (2017) found out that consumers with a high sensi- endogenous microbiome, as well as gastrointestinal tivity to androstenone were more…

…Borrisser-Pairó et a reduction in tryptophan availability by modifying the al. (2017) found out that consumers with a high sensi- endogenous microbiome, as well as gastrointestinal tivity to androstenone were more…

…Skatole is a metabolite of the amino acid tryptophan with a fecal odor and is synthesized in the colon by microbial degradation. Boar carcasses can have higher skatole levels in adipose tissue…

…Skatole is a metabolite of the amino acid tryptophan with a fecal odor and is synthesized in the colon by microbial degradation. Boar carcasses can have higher skatole levels in adipose tissue…

…the amino acid tryptophan with a fecal odor that is synthesized by Frontiers in Veterinary Science 03 frontiersin.org Wang et al. 10.3389/fvets.2023.1248879 TABLE 2 Several commercial immunocastration…

…the amino acid tryptophan with a fecal odor that is synthesized by Frontiers in Veterinary Science 03 frontiersin.org Wang et al. 10.3389/fvets.2023.1248879 TABLE 2 Several commercial immunocastration…

tandard curve was generated for each assay using haptoglobin standards at 2.5, 1.25, 0.625, 0.312, and 0 mg/mL. The Page 5/20 assay procedure involved dispensing reagents 1 and 2 into storage vessels within the instrument, followed by aliquoting samples, controls, and calibrators into the appropriate sample cuts. Absorbance was then measured at 600–630 nm while the calibration curve developed. Results were interpreted by calculating the mean absorbance for each sample, control, or standard. A calibration curve was generated by plotting absorbance (600–630 nm) against haptoglobin concentration (mg/mL), and a smooth curve was fitted through the data points. For porcine samples, expected haptoglobin values were categorized as follows: normal range (0.00-2.2- mg/mL) and acute phase range (3.00–8.00 mg/mL). The intra assay and inter assay coefficients of variation were 5.8% and 4.9%, respectively. Inflammatory response Infrared thermography (IRT) was used to detect changes in skin temperature associated with inflammation. Image collection followed the methodology described by Bates et al., (2014), utilizing a portable infrared camera (Degree2Act). Temperature changes were analyzed by comparing the piglets' skin temperature at different time points: 24 hours before castration (D0 - baseline), immediately after castration (D1), and at 7- and 14-day post-castration. Histopathological response To assess histopathological changes at the incision site, punch biopsies were collected on days 7 and 14 of the trial from five pigs per treatment group. The randomly selected piglets received pain control consisting of 1 mL of 2% lidocaine applied in the inguinal area and flunixin meglumine (2.2 mg/kg) administered intranasally 20 minutes prior to sample collection. Punch biopsies

en® 38.7 ± 0.53 128.4 ± 22.7 47.0 ± 10.6 Day −1 Placebo 38.8 ± 0.30 129.3 ± 20.0 41.5 ± 9.2 Tri-Solfen® 38.7 ± 0.36 128.5 ± 26.2 40.4 ± 11.0 Day 1 - - - Placebo 39.5 ± 0.50 125.1 ± 14.6 44.5 ± 10.2 Tri-Solfen® 39.1 ± 0.46 131.0 ± 20.7 43.7 ± 9.7 Day 7–8 Placebo 39.9 ± 0.52 117.1 ± 21.3 51.7 ± 19.5 Tri-Solfen® 39.9 ± 0.55 121.1 ± 27.2 50.7 ± 17.8 Day 11–12 Placebo 39.3 ± 0.51 123.8 ± 20.7 44.2 ± 10.9 Tri-Solfen® 39.1 ± 0.55 124.7 ± 19.4 43.1 ± 10.9 Calves were weighed on day −2, days 11–12, 21–22, and 33–34 and average daily gain was calculated on an individual animal basis over the assessment period. These results are presented in Table 5. There was a trend towards higher average daily gain in Tri-Solfen® - treated animals. Average daily gains were higher in the Tri-Solfen® treatment group at all time points, which was particularly notable at days 11–12 (p = 0.06). Table 5. Average daily gain (kg/day) in calves from each treatment group over time for Study 2. Average Daily Gain Average Daily Gain Average Daily Gain Group/Treatment (Day −2 to Day 11–12) (Day −2 to Day 21–22) (Day −2 to Day 33–34) kg/day kg/day kg/day Placebo 0.65 0.81 0.83 Tri-Solfen® 0.85 0.89 0.88 Treatment effect 0.20 0.08 0.05 (Average Daily Gain) Treatment effect (%) 31 10 6 One animal in the Tri-Solfen® treatment group was found dead in its pen on the morn- ing of day 1. A small amount of consolidated lung tissue was observed post mortem, sug- gestive of viral pneumonia, with no other abnormalities detected at necroscopy. No other serious adverse events or mortality occurred during the study. 3.2.3. Wound Healing Assessment Disbudding wounds were visually examined on days 7–8, 11–12, 21–22 and 33–34 and assessed for overall