目的:在本研究中,性别和出生类型对生长性能的影响,枯萎高度(WH),研究了Gurcu山羊孩子的放射学测量和选定的激素谱。
方法:20个孩子(单身女性=5,单身男性=5,双胞胎女性=5,双胞胎男性=5)被纳入研究。体重(BW),WH,射线照相测量(肱骨长度[HL],半径长度[RL],肱骨近端骨phy板宽度[HEP]和尺骨远端骨phy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])在1、3、5、7、9和12个月大时进行。
结果:从第7个月开始,男性的BW明显高于女性(p<0.05)。男性HL在第7个月(p=0.009)和第9个月(p=0.033)较高,而第3个月时双胞胎的RL较低(p=0.021)。男性在第7个月(p=0.008)和第9个月(p=0.036)时UEP较宽。到第12个月,65%的儿童发现HEP关闭。在第3个月(p=0.045)和第5个月(p=0.006),观察到由于组和时间效应而引起的变化(p<0.05),而其他激素仅随时间变化(p<0.05)。观察到BW,WH,HL,RL和IGF-IBW之间呈负相关,WH,HL,RL,IGF-I和HEP,UEP,降钙素,FT3,FT4,GH。
结论:Gurcu山羊孩子的性别和出生类型可能对生长性能有影响,射线照相测量和某些荷尔蒙概况。
OBJECTIVE: 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.
METHODS: 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.
RESULTS: 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.
CONCLUSIONS: Sex and birth type in Gurcu goat kids may have an impact on growth performance, radiographic measurements and certain hormonal profiles.