Dep, artment of Animal Breeding and Husbandry, Faculty of Veterinary Medicine, Kafkas University, Kars, Turkey.
Department of Internal Medicine, Faculty of Veterinary Medicine, Kafkas University, Kars, Turkey.
Vet Med Sci. 2024 Sep;10(5):e70013. doi: 10.1002/vms3.70013.
In this study, the effects of sex and birth type on growth performance, withers height (WH), radiographic measurements and selected hormone profiles in Gurcu goat kids were investigated.
Twenty kids (single female = 5, single male = 5, twin female = 5, twin male = 5) were included in the study. Body weight (BW), WH, radiographic measurements (humerus length [HL], radius length [RL], proximal humerus epiphyseal plate width [HEP] and distal ulna epiphyseal plate width [UEP]) and biochemical analysis (for serum calcitonin, free triiodothyronine [FT3], free thyroxine [FT4], growth hormone [GH] and insulin-like growth factor-I [IGF-I]) were performed at 1, 3, 5, 7, 9 and 12 months of age.
BW was significantly higher in males starting from the seventh month compared to females (p < 0.05). HL was higher in males at seventh (p = 0.009) and ninth (p = 0.033) months, whereas RL was lower in twins at the third month (p = 0.021). UEP was wider in males at seventh (p = 0.008) and ninth (p = 0.036) months. Closure of HEP was observed in 65% of kids by the 12th month. Calcitonin was lower in twins at third (p = 0.045) and fifth (p = 0.006) months, with changes observed due to group and time effects (p < 0.05), whereas other hormones only changed with time (p < 0.05). Positive correlations were observed between BW, WH, HL, RL and IGF-I. There was a negative correlation between BW, WH, HL, RL, IGF-I and HEP, UEP, calcitonin, FT3, FT4, GH.
Sex and birth type in Gurcu goat kids may have an impact on growth performance, radiographic measurements and certain hormonal profiles.
本研究旨在探讨公母性别和产仔类型对古尔库羊羔羊生长性能、体高(WH)、影像学测量值和部分激素水平的影响。
本研究纳入了 20 只羔羊(单胎母羊 5 只、单胎公羊 5 只、双胎母羊 5 只、双胎公羊 5 只)。在 1、3、5、7、9 和 12 月龄时,对羔羊的体重(BW)、体高、影像学测量值(肱骨长度[HL]、桡骨长度[RL]、肱骨近端骺板宽度[HEP]和尺骨远端骺板宽度[UEP])和生化分析(血清降钙素、游离三碘甲状腺原氨酸[FT3]、游离甲状腺素[FT4]、生长激素[GH]和胰岛素样生长因子-I[IGF-I])进行了检测。
从第 7 个月开始,雄性羔羊的 BW 显著高于雌性羔羊(p<0.05)。第 7 个月时,雄性羔羊的 HL 较高(p=0.009),第 9 个月时,雄性羔羊的 RL 较低(p=0.033)。第 3 个月时,双胎羔羊的 RL 较低(p=0.021)。第 7 个月和第 9 个月时,雄性羔羊的 UEP 较宽(p=0.008、p=0.036)。12 月龄时,65%的羔羊的 HEP 已闭合。第 3 个月和第 5 个月时,双胎羔羊的降钙素较低(p=0.045、p=0.006),且存在组间和时间效应的变化(p<0.05),而其他激素仅随时间变化(p<0.05)。BW、WH、HL、RL 和 IGF-I 之间呈正相关。BW、WH、HL、RL、IGF-I 与 HEP、UEP、降钙素、FT3、FT4、GH 之间呈负相关。
古尔库羊羔羊的性别和产仔类型可能会对其生长性能、影像学测量值和部分激素水平产生影响。