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生殖性能和母猪在妊娠期间体重变化之间的相关性

Sang Hun Ha¹, Yo Han Choi², Jun Young Mun¹

¹Department of Animal Industry Convergence, Kangwon National University, Chuncheon 24341, Korea.

Journal of animal science and technology

|July 8, 2024

概括

在妊娠期间的母猪体重变化 (BWC) 显著影响小猪的表现. 保持适当的BWC,特别是在怀孕早期 (35-70天),对于改善小猪出生体重,生长和生存率至关重要.

科学领域:

动物科学动物科学
生殖生物学生殖生物学
猪生产生产猪生产

背景情况:

种子的身体状况会影响生殖效率和后代的发育.
了解孕期母猪体重变化 (BWC) 的动态对于优化小猪的结果至关重要.

研究的目的:

为了研究母猪在特定妊娠期的体重变化 (BWC) 和随后的小猪表现之间的相关性.
确定主要的母猪生理指标,预测小猪生长和死亡率.

主要方法:

评估了70头母猪的体重变化 (BWC),背部脂肪厚度变化 (BFC),口径得分变化 (CALC),料摄入量,以及断奶到的间隔 (WEI).
根据妊娠期分析的数据:35-70天,70-105天,整体35-105天.
相关的母猪生理参数与小猪出生体重,断奶体重,平均每日增量 (ADG) 和死亡率.

主要成果:

生猪出生体重,断奶体重和ADG与母猪BWC正相关,特别是在35-70天期间.
母BFC和CALC也与小猪的表现有相关性,而小猪的死亡率与BFC密切相关.
较高的母猪BWC在70-105天内,加上从35-70天起的良好BWC增长,导致小猪体重增加和断奶体重增加.

结论:

孕期早期 (35-70天) 的母猪体重变化 (BWC) 是从出生到断奶的小猪表现的重要预测因素.
在整个孕期保持最佳的母猪BWC对于最大限度地提高小猪的生长率和最大限度地降低死亡率至关重要.
孕期BWC管理策略应优先考虑早期阶段的收益,以提高生殖成功.

关键词:

每天平均体重增加.背部脂肪的厚度背部脂肪的厚度出生的体重出生时的体重.身体重量体重体重相对应关系相对应关系死亡率死亡率死亡率

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