In order to investigafe the changes of cireumstance of fertilization at the time pre-andpost-ovulation,the amino acid cantent of cervix mucus in 27 cows were determined separately.Theresults indicated that the amino a...In order to investigafe the changes of cireumstance of fertilization at the time pre-andpost-ovulation,the amino acid cantent of cervix mucus in 27 cows were determined separately.Theresults indicated that the amino acid content at the time pre-orulatlon in arerage was 1032 pg/mL,and2380 ug/mL at the time post ovulation which made up 2.3 times of the former.The highest proportions of determined amino acids in cervix mucus were those af glutamic acid andthreonine making up 12.8%and 12.2%of the total,respectively,and the lowest was thaf of histidine,making up only 2.2%of the total.Those proportions stand stable at the time pre-and post-ovulation.The threonine content in cervix mucus of the tested sample cows at the time post-ovulation dropped onan average of 19%of that at pre-ovulation.And,Iysine increased at post-ovulation on an average25%of that at pre-ovulation.The amino acid metabolism in body fluid is an important physiological activity,in cervix mucus afteroyulation the bath cases of dropping of threanine content and the enhancement of Iysine reflect thechanges in protein composition which were related to those amino acids.As for the aforesaid changes.it stil needs further research on the relating physiological significance and the producing influenceupon the combinatioa between egg and X er Y sperm.展开更多
文摘In order to investigafe the changes of cireumstance of fertilization at the time pre-andpost-ovulation,the amino acid cantent of cervix mucus in 27 cows were determined separately.Theresults indicated that the amino acid content at the time pre-orulatlon in arerage was 1032 pg/mL,and2380 ug/mL at the time post ovulation which made up 2.3 times of the former.The highest proportions of determined amino acids in cervix mucus were those af glutamic acid andthreonine making up 12.8%and 12.2%of the total,respectively,and the lowest was thaf of histidine,making up only 2.2%of the total.Those proportions stand stable at the time pre-and post-ovulation.The threonine content in cervix mucus of the tested sample cows at the time post-ovulation dropped onan average of 19%of that at pre-ovulation.And,Iysine increased at post-ovulation on an average25%of that at pre-ovulation.The amino acid metabolism in body fluid is an important physiological activity,in cervix mucus afteroyulation the bath cases of dropping of threanine content and the enhancement of Iysine reflect thechanges in protein composition which were related to those amino acids.As for the aforesaid changes.it stil needs further research on the relating physiological significance and the producing influenceupon the combinatioa between egg and X er Y sperm.
