This study was to evaluate the effects of glucose tolerance status,maternal starch supplementation and soybean substitution in diets on the performance of dams and their offspring.Eighty-eight pregnant sows(Landrace x...This study was to evaluate the effects of glucose tolerance status,maternal starch supplementation and soybean substitution in diets on the performance of dams and their offspring.Eighty-eight pregnant sows(Landrace x Large White)were selected from an initial total of 120 sows,based on blood glucose test values,and assigned to 4 experimental treatments in a 2×2 factorial design.The factors were glucose tolerance status(glucose intolerant[GIT]vs.normal glucose tolerant[NGT])or dietary treatments(corn starch diet[CS]vs.soybean substitution diet[SSI]).A higher area under the curve(AUC)for post-meal glucose was observed(P<0.05)in the GIT group than in the NGT group on d 109 of gestation.The CS group had a lower value of homeostasis model assessment-insulin resistance than the SS group(P<0.05)on d 109 of gestation.Corn starch supplementation for sows decreased the stillbirth rate(P<0.05),regardless of the sows’glucose tolerance status.The villus height of the jejunum and the villus height to crypt depth ratio of the ileum were greater in normal birth weight piglets from the CS group than from the SS group(P<0.01),and so was the activity of sucrase in the jejunum and ileum(P<0.01).Compared with the SS group,the CS group showed a reduction in pre-weaning mortality rate,an increase in the number of high-birth-weight piglets,and a decrease in the number of low-birth-weight piglets(P<0.05)under GIT status.In conclusion,sows fed CS decreased stillbirth rate and improved insulin resistance,as well as improving the intestinal morphology and digestive enzyme activities of their progeny,regardless of glucose tolerance status.Additionally,the CS group improved birth weight distribution and decreased pre-weaning mortality rate of piglets under GIT status.展开更多
This study investigated the effects of different amounts of wheat aleurone(WA)(0,15%,30%)inclusion in gestation diets on the reproductive performance,postprandial satiety,stress status and stereotypic be-haviors of so...This study investigated the effects of different amounts of wheat aleurone(WA)(0,15%,30%)inclusion in gestation diets on the reproductive performance,postprandial satiety,stress status and stereotypic be-haviors of sows.A total of 84 Landrace×Yorkshire sows(parity 4.87±1.32)at breeding were randomly allotted to one of the three isoenergetic and isonitrogenous dietary treatments based on parity and body weight.The results showed that,compared with the control(0),sows fed the WA diet had a higher serum concentration of peptide YY(PYY)(P<0.05)and glucagon like peptide-1(GLP-1)(P<0.05)and a lower concentration of saliva cortisol(P<0.01).Importantly,compared with the control group,only the 15%WA group had a higher concentration of the total antioxidant capacity(T-AOC)(P<0.05),lower pro-portions of sitting(P=0.05)and stillbirth rates(P<0.01).Accordingly,the production cost per piglet born alive($6.9 vs.$7.6)or per piglet born healthy($7.4 vs.$7.9)declined in the 15%WA group versus the control group.Overall,15%WA inclusion in gestation diets contributed to enhancing postprandial satiety,alleviating stress status and decreasing stillbirth rate of sows.This study provides a reference for the application of WA as a partial substitute for conventional feed ingredients to improve sows'repro-ductive performance.展开更多
Background: Despite improvements in antenatal and intrapartum care, stillbirth still remains an important, largely understudied and pregnant problem in obstetrics. Most of the stillbirths occur in the developing world...Background: Despite improvements in antenatal and intrapartum care, stillbirth still remains an important, largely understudied and pregnant problem in obstetrics. Most of the stillbirths occur in the developing world and the majority of stillbirths are preventable. Objective: To determine the stillbirth rate, the identifiable risk factors and sociodemographic factors associated with stillbirths. Materials and Methods: This was a retrospective review of all deliveries conducted at UATH over a five-year period spanning from the January 2012 to December 2016. In this study, stillbirths were considered as foetal death at or after 28 weeks of gestation or a birth weight of 1000 g or more. The folders of cases that met the definition of stillbirth within the study period were retrieved and analyzed for sociodemographic factors, type of stillbirth, fetomaternal determinants of stillbirths and presumptive/identifiable risk factors for the stillbirth. Results: There were a total of 5714 deliveries within the period under review, of which 288 resulted in stillbirths giving an institutional stillbirth rate of 50.4/1000 deliveries. Out of the 288 stillbirths, 136 (47.2%) were fresh stillbirths while 152 (52.8%) were macerated. Macerated stillbirth (152, 52.8%) was slightly predominant, with obstructed labour 94 (32.6%) being responsible for most of the stillbirths. Most of the stillbirths were preterm (183, 63.5%). There were 6 congenitally malformed stillbirth foetuses and no autopsy was carried out on any of the 288 stillborn. However, majority of the parturients who had stillbirth were unemployed (137, 47.6%) and uneducated (110, 38.2%). Conclusion: The stillbirth rate within the study period appears. Complications of labour seem to be the leading risk factor for stillbirth in this study. Low socioeconomic status underscores the need to reduce factors related to social, educational, occupational and healthy inequalities in the developing world.展开更多
基金jointly supported by the Project of National Natural Science Foundation China(No.31790411 and 31902165)Natural Science Foundation of Guangdong Province(2021A1515012116 and 2019A1515011443)。
文摘This study was to evaluate the effects of glucose tolerance status,maternal starch supplementation and soybean substitution in diets on the performance of dams and their offspring.Eighty-eight pregnant sows(Landrace x Large White)were selected from an initial total of 120 sows,based on blood glucose test values,and assigned to 4 experimental treatments in a 2×2 factorial design.The factors were glucose tolerance status(glucose intolerant[GIT]vs.normal glucose tolerant[NGT])or dietary treatments(corn starch diet[CS]vs.soybean substitution diet[SSI]).A higher area under the curve(AUC)for post-meal glucose was observed(P<0.05)in the GIT group than in the NGT group on d 109 of gestation.The CS group had a lower value of homeostasis model assessment-insulin resistance than the SS group(P<0.05)on d 109 of gestation.Corn starch supplementation for sows decreased the stillbirth rate(P<0.05),regardless of the sows’glucose tolerance status.The villus height of the jejunum and the villus height to crypt depth ratio of the ileum were greater in normal birth weight piglets from the CS group than from the SS group(P<0.01),and so was the activity of sucrase in the jejunum and ileum(P<0.01).Compared with the SS group,the CS group showed a reduction in pre-weaning mortality rate,an increase in the number of high-birth-weight piglets,and a decrease in the number of low-birth-weight piglets(P<0.05)under GIT status.In conclusion,sows fed CS decreased stillbirth rate and improved insulin resistance,as well as improving the intestinal morphology and digestive enzyme activities of their progeny,regardless of glucose tolerance status.Additionally,the CS group improved birth weight distribution and decreased pre-weaning mortality rate of piglets under GIT status.
基金the National Natural Science Foundation of China,China(31872985)the National Key Research and Development Program of China,China(2018YFD0500600)the China Scholarship Council.China(201907630006).
文摘This study investigated the effects of different amounts of wheat aleurone(WA)(0,15%,30%)inclusion in gestation diets on the reproductive performance,postprandial satiety,stress status and stereotypic be-haviors of sows.A total of 84 Landrace×Yorkshire sows(parity 4.87±1.32)at breeding were randomly allotted to one of the three isoenergetic and isonitrogenous dietary treatments based on parity and body weight.The results showed that,compared with the control(0),sows fed the WA diet had a higher serum concentration of peptide YY(PYY)(P<0.05)and glucagon like peptide-1(GLP-1)(P<0.05)and a lower concentration of saliva cortisol(P<0.01).Importantly,compared with the control group,only the 15%WA group had a higher concentration of the total antioxidant capacity(T-AOC)(P<0.05),lower pro-portions of sitting(P=0.05)and stillbirth rates(P<0.01).Accordingly,the production cost per piglet born alive($6.9 vs.$7.6)or per piglet born healthy($7.4 vs.$7.9)declined in the 15%WA group versus the control group.Overall,15%WA inclusion in gestation diets contributed to enhancing postprandial satiety,alleviating stress status and decreasing stillbirth rate of sows.This study provides a reference for the application of WA as a partial substitute for conventional feed ingredients to improve sows'repro-ductive performance.
文摘Background: Despite improvements in antenatal and intrapartum care, stillbirth still remains an important, largely understudied and pregnant problem in obstetrics. Most of the stillbirths occur in the developing world and the majority of stillbirths are preventable. Objective: To determine the stillbirth rate, the identifiable risk factors and sociodemographic factors associated with stillbirths. Materials and Methods: This was a retrospective review of all deliveries conducted at UATH over a five-year period spanning from the January 2012 to December 2016. In this study, stillbirths were considered as foetal death at or after 28 weeks of gestation or a birth weight of 1000 g or more. The folders of cases that met the definition of stillbirth within the study period were retrieved and analyzed for sociodemographic factors, type of stillbirth, fetomaternal determinants of stillbirths and presumptive/identifiable risk factors for the stillbirth. Results: There were a total of 5714 deliveries within the period under review, of which 288 resulted in stillbirths giving an institutional stillbirth rate of 50.4/1000 deliveries. Out of the 288 stillbirths, 136 (47.2%) were fresh stillbirths while 152 (52.8%) were macerated. Macerated stillbirth (152, 52.8%) was slightly predominant, with obstructed labour 94 (32.6%) being responsible for most of the stillbirths. Most of the stillbirths were preterm (183, 63.5%). There were 6 congenitally malformed stillbirth foetuses and no autopsy was carried out on any of the 288 stillborn. However, majority of the parturients who had stillbirth were unemployed (137, 47.6%) and uneducated (110, 38.2%). Conclusion: The stillbirth rate within the study period appears. Complications of labour seem to be the leading risk factor for stillbirth in this study. Low socioeconomic status underscores the need to reduce factors related to social, educational, occupational and healthy inequalities in the developing world.
