揭示了子牛奶的属性
A Ludwiczak1, J Składanowska-Baryza1, B Kuczyńska2
1Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Słoneczna 1, 62-002 Suchy Las, Poland.
概括
在哺乳期,子牛奶的成分发生显著变化,影响子健康. 怀孕会对牛奶产量和质量产生负面影响,可能会损害母乳生长.
科学领域:
- 动物科学动物科学
- 乳制品科学 乳制品科学
- 生殖生物学 生殖生物学
背景情况:
- 了解子牛奶成分对于改善子养健康和生长在繁殖计划中至关重要.
- 之前的研究还没有全面详述子乳在哺乳期的物理化学特性或生殖状况的影响.
研究的目的:
- 为了对子牛奶进行全面的物理化学分析.
- 调查鹿的生殖状况对每日牛奶产量和牛奶成分的影响.
- 在连续的哺乳期内评估牛奶属性的变化.
主要方法:
- 在一家商业养场使用Hycole进行的研究,对连续三次哺乳进行了研究.
- 每天的牛奶产量被记录下来.
- 物理化学分析包括总固体,非脂肪固体,蛋白质,素,乳糖,脂肪酸 (C18:2,C18:3),体细胞计数 (SCC),pH和脂肪球体大小分布.
主要成果:
- 从哺乳期的第二天到第14天,每天的牛奶产量增加了,达到约300克/天.
- 哺乳期显著改变了牛奶的总固体,非脂肪固体,蛋白质,素,乳糖,脂肪酸,SCC和pH.
- 在哺乳期,脂肪球体直径从5到7微米增加,小脂肪球体减少,可能会降低牛奶的消化能力.
- 怀孕对牛奶产量,子生长以及牛奶中蛋白质,非脂肪固体和乳糖的含量产生了负面影响.
结论:
- 子牛奶的成分和产量在整个哺乳期都是动态的,并受到子的生殖状况的影响.
- 哺乳期间小脂肪球体的减少可能会影响子套装中的营养吸收.
- 交叠的哺乳期和怀孕期可能会对子的发育产生负面影响,因为牛奶的质量和数量下降.
相关概念视频
01:39Epistasis
47.0K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
47.0K
01:12The Mammary Glands
765
The female breast is a hemispheric projection of variable size positioned anterior to the pectoralis major and serratus anterior muscles. A fascia layer composed of dense, irregular connective tissue connects it to these muscles.
Each breast features a pigmented projection known as the nipple, through which milk emerges via closely spaced openings of ducts, referred to as lactiferous ducts. Surrounding the nipple is a circular pigmented area of skin named the areola, which appears rough due to...
Each breast features a pigmented projection known as the nipple, through which milk emerges via closely spaced openings of ducts, referred to as lactiferous ducts. Surrounding the nipple is a circular pigmented area of skin named the areola, which appears rough due to...
765