【摘 要】
：
The levels of plasma luteinizing hormone(LHt)、 estrogen(E2) and progesterone(P4) were determined in one hundred and ninety-eight SLA-typed sows of Chinese lean
【机 构】
：
Institute of Animal and Veterinary Sciences, Beijing Academy of Agriculture and Forestry Sciences, B
论文部分内容阅读
The levels of plasma luteinizing hormone(LHt)、 estrogen(E2) and progesterone(P4) were determined in one hundred and ninety-eight SLA-typed sows of Chinese lean-type dam-line(DVI). During the lactation, the levels of LH、E2 and P4 were Iow, which had no significant differences in different SLA-typed sows.E2 reached its peak at breeding day. LHt and P4 reached their peaks at 15th day of pregnancy. Compared with other SLA-typed sows, type-D had higher levels of E2 and P4 at breeding day, higher levels of P4 during early pregnancy, which favored the oestrus, breeding and pregnancy of sows.
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