Kuru Mushap, Boga Kuru Buket, Sogukpinar Osman, Cebi Sen Cigdem, Oral Hasan, Kirmizibayrak Turgut
Department of Obstetrics and Gynecology, Kars, Turkey.
Department of Animal Breeding and Husbandry, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey.
J Vet Res. 2020 Nov 6;64(4):573-579. doi: 10.2478/jvetres-2020-0074. eCollection 2020 Dec.
The aim of the study was to determine the effect of the vitamins, omega-3 polyunsaturated fatty acid and minerals in the supplement Toryum administered before and during oestrus synchronisation on some fertility parameters of ewes during the non-breeding season.
The experimental animals were clinically healthy Pirlak ewes, 55-75 days postpartum, aged 2-4 years and weighing 40-50 kg. A sponge was inserted into the vagina for 10 d (G1, n = 30; G2, n = 30) or 14 d (G3, n = 30; G4, n = 30) for oestrus synchronisation, and on the day of removal, 400 IU equine chorionic gonadotropin was injected. Toryum soft capsules were administered individually (1 capsule/ewe p.o.) to G1 and G3 ewes seven days before the sponge was inserted and on the day it was removed. Oestrus detection was started 12 h after sponge removal. Pregnancy was diagnosed by transrectal ultrasonography on the 30 day after mating.
The pregnancy rate was statistically different between G1 and G4 (P < 0.05). The onset of oestrus was statistically different (P < 0.001) between the 10-d groups (G1 and G2) and the 14-d groups (G3 and G4). The litter size and oestrus, conception, lambing, multiple birth, and survival rates were not significantly different between the groups (P > 0.05).
Toryum administered to Pirlak ewes during progesterone-based oestrus synchronisation protocols during the non-breeding season may increase pregnancy rates. The relationship between Toryum and fertility parameters in ewes would be better understood by comprehensive studies.
本研究的目的是确定在发情同步化之前及期间给予母羊的营养补充剂Toryum中的维生素、ω-3多不饱和脂肪酸和矿物质对非繁殖季节母羊某些繁殖参数的影响。
实验动物为临床健康的皮尔拉克母羊，产后55 - 75天，年龄2 - 4岁，体重40 - 50千克。为进行发情同步化，将海绵栓插入阴道10天（G1组，n = 30；G2组，n = 30）或14天（G3组，n = 30；G4组，n = 30），取出海绵栓当天注射400国际单位马绒毛膜促性腺激素。在插入海绵栓前7天及取出当天，给G1组和G3组母羊单独投喂Toryum软胶囊（每只母羊口服1粒）。取出海绵栓12小时后开始发情检测。配种后30天通过经直肠超声检查诊断妊娠情况。
G1组和G4组的妊娠率在统计学上存在差异（P < 0.05）。10天组（G1和G2）与14天组（G3和G4）之间发情开始时间在统计学上存在差异（P < 0.001）。各组间产仔数、发情、受孕、产羔、多胎率和存活率无显著差异（P > 0.05）。
在非繁殖季节基于孕酮的发情同步化方案期间给皮尔拉克母羊投喂Toryum可能会提高妊娠率。通过全面研究能更好地理解Toryum与母羊繁殖参数之间的关系。
