Faculty of Agriculture, Department of Animal Science, Yozgat Bozok University, 66900, Yozgat, Turkey.
Faculty of Arts and Science, Department of Biology, Yozgat Bozok University, 66900, Yozgat, Turkey.
Vet Res Commun. 2021 Dec;45(4):211-221. doi: 10.1007/s11259-021-09802-6. Epub 2021 Jun 5.
The aim of this study was to assess the sperm quality traits of 1- and 2-year-old ganders and the reproduction traits of 2-year-old domestic Turkish geese in natural mating (NM) and artificial insemination (AI) conditions. The study comprised 72 two-year-old females, 12 one-year-old, and 12 two-year-old ganders. Thirty-six female geese were mated naturally (18 with 1-year-old ganders, 18 with 2-year-old ganders); the remaining thirty-six were inseminated artificially (18 with 1-year-old ganders, 18 with 2-year-old ganders). Twenty-four ganders were separated into groups (12 for NM; 12 for AI). The male:female ratio was 1:3 for NM and AI groups. Egg production, broodiness, fertility and hatching traits were determined in female geese, sperm quality traits such as semen volume, sperm concentration, sperm quality factor (eSQF: ejaculated semen SQF; dSQF: diluted semen SQF), sperm motility, and sperm morphological traits in ganders. The insemination method and gander's age did not affect egg production, AI geese showed significantly more broodiness than NM groups as the breeding months progresses (p < 0.05). Fertility was higher in the groups containing 2-year-old ganders than in those 1-year-old ganders, and NM groups compared to AI (p < 0.05). The insemination method significantly affected semen volume, sperm concentration, eSQF, sperm motility, total live sperm, normal sperm, macro-cephalic sperm, and dead sperm percentages in ganders (p < 0.05).Managing females in the NM system with ganders was able to partially suppress the broodiness behavior, possibly due to synchronization of pair-bond behaviors. Greater fertility was achieved with 2-years-old AI ganders, which had lower dSQF compared to 1-year-old NM ganders. This is a good indication that only SQF is not sufficient to achieve sustainable-desired fertility, and sexual experience is also an important factor.
本研究旨在评估 1 岁和 2 岁公鹅的精子质量特征以及 2 岁家养土耳其鹅在自然交配（NM）和人工授精（AI）条件下的繁殖特征。研究包括 72 只 2 岁雌性鹅、12 只 1 岁和 12 只 2 岁公鹅。36 只雌鹅自然交配（18 只与 1 岁公鹅交配，18 只与 2 岁公鹅交配）；其余 36 只雌鹅接受人工授精（18 只与 1 岁公鹅交配，18 只与 2 岁公鹅交配）。24 只公鹅分为两组（12 只为 NM 组；12 只为 AI 组）。NM 和 AI 组的公母比例为 1:3。在雌性鹅中确定了产蛋、抱窝、受精和孵化特性，在公鹅中确定了精子质量特性，如精液量、精子浓度、精子质量因子（eSQF：射出精液 SQF；dSQF：稀释精液 SQF）、精子运动性和精子形态学特性。授精方法和公鹅年龄对产蛋率没有影响，但随着繁殖月份的推进，AI 鹅的抱窝率明显高于 NM 组（p<0.05）。含有 2 岁公鹅的组的受精率高于 1 岁公鹅的组，且 NM 组高于 AI 组（p<0.05）。授精方法对公鹅的精液量、精子浓度、eSQF、精子运动性、总活精子、正常精子、大头精子和死精子百分比有显著影响（p<0.05）。在 NM 系统中用公鹅管理母鹅，可能由于配对行为的同步，部分抑制了抱窝行为。2 岁 AI 公鹅的受精率更高，与 1 岁 NM 公鹅相比，其 dSQF 更低。这表明，只有 SQF 不足以实现可持续的理想受精率，性经验也是一个重要因素。
