初产母猪产后的临床和内分泌学研究。泌乳期长度和窝仔数的影响。
Clinical and endocrinological studies in primiparous post partum sows. Effects of lactation length and litter size.
作者信息
Kunavongkrit A
出版信息
Acta Vet Scand. 1984;25(2):260-79. doi: 10.1186/BF03547270.
Abstract
The object of this investigation was to determine the relationships between clinical findings and hormonal patterns in primiparous sows with different lactation length and litter size during lactation, weaning and to the first oestrus. Seven pairs of primiparous full sib sows were used to determine the effect of lactation length with normal litter size. One sow of each pair was assigned to nurse the piglets for 3 weeks (group A) while the other nusred for 5 weeks (group B). Another 8 primiparous sows (group C) were assigned to nurse 2–4 piglets during a 5-week lactation period. Oestrus detection was performed twice daily and laparoscopic examination every 2 weeks. If the sows did not come in oestrus within 3 weeks after weaning they were slaughtered. Peripheral plasma levels of progesterone, oestradiol-17β and LH were estimated by radioimmunoassays throughout the experimental period.
摘要
本研究的目的是确定初产母猪在不同泌乳期长度、不同窝产仔数情况下，在泌乳期、断奶期以及至首次发情期间的临床发现与激素模式之间的关系。使用七对初产全同胞母猪来确定正常窝产仔数情况下泌乳期长度的影响。每对中的一头母猪被分配去哺育仔猪3周（A组），而另一头哺育5周（B组）。另外8头初产母猪（C组）被分配在5周的泌乳期内哺育2至4头仔猪。每天进行两次发情检测，每2周进行一次腹腔镜检查。如果母猪在断奶后3周内未发情，则将其屠宰。在整个实验期间，通过放射免疫分析法测定外周血中孕酮、雌二醇-17β和促黄体生成素的水平。
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