Relationship Between Calving Rate and Concentration of Hormones and Blood Metabolites During Pregnancy in Post-Induction Pasundan Cows GnRH

E. N. Setiawati, M. Y. Sumaryadi, V. Armelia
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Abstract

Twenty Pasundan heifers were used in the study to find out calving rates related to the concentration of hormones and metabolites of the mother's blood during the farm. The experimental mother cow was given a combination of the hormone prostaglandin F2α as much as 5 ml per head and gonadotropin realising hormone (GnRH) of 2.5 ml per head intramuscular to uniformize fertility conditions and improve fertility. The mother cow is immediately carried out artificial insemination 2 times with an interval of 6 hours. All experimental cows were given forage basalt food and adlibitum drinking water. Pregnancy examination is carried out on the 60th and 150th days of post-insemination using the rectal palpation method. The observed variables in the form of calving rate were related to plasma concentrations of the hormones progesterone (P), estrogen (E), and blood metabolites levels β-OH butyric (BHBA), blood urea nitrogen (BUN), and non-esterified fatty acids (NEFA). The results showed that in Garut calving average rate of 90%, the plasma concentration of hormone progesterone 4.73±0.28 ng/ml and estrogen 24.59±1.91 pg/ml higher than Bogor with an average calving rate of 70%, the plasma concentration of progesterone hormone 3.46±0.71ng/ml and estrogen 21.67±1.57 pg/ml. The concentration of BHBA, BUN, and NEFA for Bogor region respectively was 12.33±1.81 mg dl-1; 23.70±2.40 mg dL; 1.85±0.25 mmol L-1) higher than Garut in a row is 10.17±1.25*mg dl-1, 22.70±2.70mg dL; 1.76±0.37mmol L-1). The results of regression analysis showed that the relationship of calving rate (CR) with the concentration of hormones conceptus estrogen (E) and progesterone (P) in garut region has a real form of linear relationship (P<0.05) by following the equation Calving rate=4772 +0.232 Estrogen + 0.643 Progesterone - 0.074 BHBA + 0.335 NEFA - 0.082 BUN with a coefficient of determination of 43.65%, while for Bogor region according to Calving regression rate=5,590+ 0.010 Estrogen +0.638 Progesterone - 0.231 BHBA + 1.11NEFA – 0.105 BUN with a coefficient of determination of 16.34%. It was concluded that calving rate is strongly influenced by the concentration of the hormones progesterone and estrogen, as well as having a close relationship with the condition of the mother blood metabolite during the pregnancy.
诱导后帕桑丹奶牛妊娠期激素及血液代谢物浓度与产犊率的关系
研究中使用了20头帕桑丹小母牛,以找出在农场期间与母亲血液中激素和代谢物浓度相关的产犊率。实验母牛每头肌肉注射5 ml的前列腺素F2α和2.5 ml的促性腺激素实现激素(GnRH),以均匀生育条件,提高生育力。对母牛立即进行人工授精2次,间隔6小时。试验奶牛饲喂草料玄武岩饲料和不限量饮水。在人工授精后第60天和第150天采用直肠触诊法进行妊娠检查。产犊率的变化与血浆中黄体酮(P)、雌激素(E)、血代谢产物β-OH丁酸(BHBA)、血尿素氮(BUN)和非酯化脂肪酸(NEFA)水平有关。结果表明,在平均产犊率为90%时,血浆激素黄体酮浓度为4.73±0.28 ng/ml,雌激素浓度为24.59±1.91 pg/ml,高于平均产犊率为70%时的茂物,血浆激素黄体酮浓度为3.46±0.71ng/ml,雌激素浓度为21.67±1.57 pg/ml。茂物地区BHBA、BUN、NEFA浓度分别为12.33±1.81 mg dl-1;23.70±2.40 mg dL;(1.85±0.25 mmol L-1)比加鲁特高10.17±1.25*mg dL -1, 22.70±2.70mg dL;1.76±0.37更易与l - 1)。回归分析结果表明,产犊率(CR)与胎鼠区孕激素雌激素(E)、孕酮(P)浓度的关系为:产犊率=4772 +0.232雌激素+ 0.643孕酮- 0.074 BHBA + 0.335 NEFA - 0.082 BUN,其决定系数为43.65%,符合真正的线性关系(P<0.05);在茂物地区,产犊回归率为5590 + 0.010雌激素+0.638孕激素- 0.231 BHBA + 1.11NEFA - 0.105 BUN,决定系数为16.34%。综上所述,产犊率受孕激素和雌激素浓度的强烈影响,并与妊娠期间母体血液代谢物状况密切相关。
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