Department of Theriogenology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt.
Department of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Anim Reprod Sci. 2019 Sep;208:106134. doi: 10.1016/j.anireprosci.2019.106134. Epub 2019 Jul 21.
This study was conducted on 47 pluriparous pregnant Egyptian buffalo. Body condition score (BCS) was classified and blood samples were collected pre-partum and post-partum for estimation of IGF-1, hormonal, metabolic and antioxidants values. There was palpation per rectum and ultrasonography in addition to quantitation of progesterone (P) and estradiol-17β (E-17β) for monitoring post-partum ovarian resumption. Reproductive indices were calculated 60, 90, 120 and 150 days post-partum. Based on the concentrations of P and E-17β, buffalo were divided into ovulatory and non-ovulatory groups. The P and E-17β were greater (P < 0.001) in ovulatory compared to non-ovulatory buffalo. The BCS and IGF-1 post-partum were greater (P = 0.024; 0.001, respectively) in ovulatory than non-ovulatory buffalo. Glucose and albumin were greater during pre- (P < 0.001; 0.013) and post-partum (P = 0.005; 0.003) periods in ovulatory than non-ovulatory buffalo. Post-partum, NEFA and BHBA concentrations were greater (P < 0.001) in non-ovulatory than ovulatory buffalo. The BUN concentrations were greater (P = 0.002) in non-ovulatory buffalo during pre- and post-partum periods. There were differences in GSH and SOD concentrations between groups (P < 0.001; 0.002, respectively). The BCS, albumin, IGF-1, GSH and SOD concentrations post-partum were negatively correlated with the delay of post-partum ovulation. The post-partum NEFA and BHBA concentrations, however, were positively correlated with delayed post-partum ovulation. Ovulatory buffalo had fewer (P < 0.01) days non-pregnant and for calving intervals as well as greater pregnancy rates than non-ovulatory buffalo. In conclusion, buffalo with delayed post-partum ovarian resumption were prone to have negative energy balance.
这项研究对 47 头经产埃及水牛进行了研究。对其体况评分（BCS）进行了分类，并在产前和产后采集了血液样本，以评估 IGF-1、激素、代谢和抗氧化剂值。除了定量孕激素（P）和雌二醇-17β（E-17β）以监测产后卵巢恢复外，还进行了直肠触诊和超声检查。产后 60、90、120 和 150 天计算了繁殖指数。根据 P 和 E-17β的浓度，将水牛分为排卵和非排卵组。排卵组的 P 和 E-17β均高于非排卵组（P<0.001）。排卵组的 BCS 和 IGF-1 产后更高（P=0.024；0.001）。排卵组的葡萄糖和白蛋白在产前（P<0.001；0.013）和产后（P=0.005；0.003）期间均高于非排卵组。非排卵组的产后 NEFA 和 BHBA 浓度高于排卵组（P<0.001）。非排卵组的 BUN 浓度在产前和产后期间均高于排卵组（P=0.002）。两组之间的 GSH 和 SOD 浓度存在差异（P<0.001；0.002）。产后 BCS、白蛋白、IGF-1、GSH 和 SOD 浓度与产后排卵延迟呈负相关。然而，产后 NEFA 和 BHBA 浓度与产后排卵延迟呈正相关。排卵组的非怀孕天数和产犊间隔较少（P<0.01），怀孕率也高于非排卵组。综上所述，产后卵巢恢复延迟的水牛更容易出现负能平衡。
