CAJ | 학술논문

以会宁地区某奶牛场的荷斯坦牛为研究对象，选择2011～2013年不同产犊季节及不同胎次的健康母牛共200头，主要探讨产犊季节及胎次对产奶量的影响。将所有产奶数据校正到305d产奶量，用Excel进行统计分析，分别做出不同产犊季节和不同胎次305d产奶量的整体分布曲线。对4个季节和5个胎次的产奶量分别采用单因素方差分析和SSR法多重比较，确定不同季节和各胎次的影响效果。结果表明，不同产犊季节和不同胎次对荷斯坦牛305d产奶量的影响均极显著。秋季（9~11月份）产犊的母牛305d产奶量最高，显著或极显著高于其他季节，属高产奶量季节；夏季（6~8月份）产犊的母牛305d产奶量最低，显著或极显著低于其他季节，属低产奶量季节。第2胎的305d产奶量最高，随着胎次的增加，特别是第3胎及以后产犊的母牛305d产奶量逐渐下降。本研究结果表明，在保证全年牛奶供求基本平衡的前提下，适当调整在高产季节产犊和加强对高胎次奶牛的饲养管理，对提高奶牛群体产奶量具有重要意义。
이회저지구모내우장적하사탄우위연구대상，선택2011～2013년불동산독계절급불동태차적건강모우공200두，주요탐토산독계절급태차대산내량적영향。장소유산내수거교정도305d산내량，용Excel진행통계분석，분별주출불동산독계절화불동태차305d산내량적정체분포곡선。대4개계절화5개태차적산내량분별채용단인소방차분석화SSR법다중비교，학정불동계절화각태차적영향효과。결과표명，불동산독계절화불동태차대하사탄우305d산내량적영향균겁현저。추계（9~11월빈）산독적모우305d산내량최고，현저혹겁현저고우기타계절，속고산내량계절；하계（6~8월빈）산독적모우305d산내량최저，현저혹겁현저저우기타계절，속저산내량계절。제2태적305d산내량최고，수착태차적증가，특별시제3태급이후산독적모우305d산내량축점하강。본연구결과표명，재보증전년우내공구기본평형적전제하，괄당조정재고산계절산독화가강대고태차내우적사양관리，대제고내우군체산내량구유중요의의。
The Holstein cows from dairy farm in Huining region were used as the research subjects, there were totally 200 healthy cows selected from 2011 to 2013 of different calving seasons and different parities, the milk production was recorded, the impact on milk production of calving seasons and parities was discussed. All data of milk production will be shifted to 305d, with Excel format for statistics and analysis, and the overall distribution curve of different calving seasons and different parities of 305d milk production were drawn respectively. Milk production of four seasons and ifve parities were multiple compared by using one factor analysis of variance and SSR method. The results demonstrated that the effects on 305d milk production of Holstein cow in different calving seasons and different parities are extremely obvious. The cows to calve in Autumn (From September to November) that 305d milk production is the highest, signiifcantly or very signiifcantly higher than in other seasons, is the high milk production season. The cows to calve in Summer (From June to August) that 305d milk production is the lowest, signiifcantly or very signiifcantly lower than in other seasons, is the low milk production season. Cows are calving of the subsequent parities that 305d milk production is better, with the parity increases, especially from the three parities and after calving cow’s 305d milk production gradually decreased. Calving seasons and parities had effects on Holstein cows in the Huining region of Gansu province. On the promise of guarantee balance of whole year milk supply and demand, during high calving season to calve to be appropriately adjusted and high parities cows breeding management to be enhanced, which is of great signiifcance to improve milk production of cow’s group.