A total of 72 growing-finishing pigs（56 days old） were used to investigate the effects of dietary probiotics on growing performance, pork quality and serum metabolites. Using single factorial experiment design, pigs...A total of 72 growing-finishing pigs（56 days old） were used to investigate the effects of dietary probiotics on growing performance, pork quality and serum metabolites. Using single factorial experiment design, pigs were allotted to three groups（four pens/group and six pigs/pen）. Diet treatments were a corn-soybean meal（control group） and a corn-soybean meal with 1% probiotics（probiotics group） or 80 mg kg-1colistin sulfate（antibiotics group）. Pigs were slaughtered when pigs of the lightest averaged 90 kg（157 days of age）. There was no difference（p＆gt;0.05） in average daily gain or feed/gain, and the average daily feed intake of the antibiotics group was higher than that of the probiotics and the control groups（p＆lt;0.05）. Diet supplemented with probiotics reduced the drip loss and cooking loss of pork（p＆lt;0.05）. Dietary supplementation with probiotics significantly decreased the content of triglycerides, lowdensity lipoprotein and urea nitrogen in serum（p＆lt;0.05）, and increased the content of high-density lipoprotein in serum（p＆lt;0.05）. These results suggested improving effects of dietary probiotics on pork quality and serum metabolism in growing-finishing pigs.展开更多
In order to evaluate effects of Chinese medicinal herb (CMH) on growth and immunization of laying male chicks,eleven CMHs were used in this study,which are Astragalus membranacens (AM),Schisandra chinensis (SC),Ligust...In order to evaluate effects of Chinese medicinal herb (CMH) on growth and immunization of laying male chicks,eleven CMHs were used in this study,which are Astragalus membranacens (AM),Schisandra chinensis (SC),Ligustrum Lucidum(LL),Codonopsis,Scutellaria baicalensis (SB),Atractylodes macrocephala(AMA),Haw,Ginger,Acanthopanax scenticosns (AS),Angelica and Lycium,added to basal diet as 1%,respectively,with the basal diet supplemented with 50 mg·kg^(-1) bacitracin zinc(BZ) as the control.The body weight (BW) of birds were recorded at 1,21 and 42 days after birth,individually.The birds were vaccinated 0.50 mL against Newcastle disease (ND) with La sota vaccinel (containing mineral oil as adjuvant) by i.m.inoculation at 21 d of age.All of birds was vaccinated with F48E9 NDV by i.m.inoculation at 49 day of age.Blood samples were taken via wing vein from each bird on the day receiving the vaccination (Day-1) and on 14,21,28,30 and 34 d after vaccination (Days 14,21,28,30 and 34). Results showed that bodyweight (BW) and bodyweight gain(BWG) of the trial groups are similar to the control group.No significant differences of relative weight (RW) of bursa and spleen were observed among trial groups except for AS (P<0.05).Serum antibody titers of SC,LL,Codonopsis,SB,AMA and Lycium groups were significantly increased (P<0.05) in contrast to these control group on day-21 or 28 after immunized ND La sota vaccinel,which suggested that SC,LL,Codonopsis,SB,AMA and Lycium could augment antibody formulation.Furthermore,Compared with the control,antibody titers in SC,Codonopsis,AS,Lycium,SB and AMA group were higher (P<0.05) after vaccinated with F48E9 NDV,which suggested that SC,Codonopsis,AS,Lycium,SB and AMA have activity of antivirus.In conclusion,CMH used in the present study have similar effect on BW and BWG of chicks compared with the control.Moreover,these eleven CMH have little influence on RW of immunized organ except AS.However,SC,Codonopsis,LL,Lycium,SB and AMA could augment antibody formulation.Furthermore,SC,Codonopsis,AS,Lycium,SB and AMA have activity of antivirus compared with the control.展开更多
This study evaluated the lard enriched with n-3 polyunsaturated fatty acids(PUFAs)on serum lipid composition in rats.The experiment contained two parts:(A)20 crossed pigs(Landrace×Min,60±2 kg)were assigned r...This study evaluated the lard enriched with n-3 polyunsaturated fatty acids(PUFAs)on serum lipid composition in rats.The experiment contained two parts:(A)20 crossed pigs(Landrace×Min,60±2 kg)were assigned randomly into two dietary groups:a control group and a group fed the diet added 10%linseed based on the control diet.This part lasted 56 days and the results showed that the levels of the total n-3 PUFA in lard were improved approximately 2-fold(p<0.05),when pigs were fed 10% flaxseed compared to a control diet of corn.The lard taken from pigs was melted and preserved for rat experiment;(B)45 Sprague-Dawley rats at day 36 were randomly fed one of three diets for 42 days:the diet without added fat,the diet contained 10% common lard from pigs fed a conventional corn ration and the diet contained 10% lard enriched with n-3 PUFA from pigs fed 10% flaxseed.Rats fed lard significantly increased(p<0.05)serum cholesterol levels compared with rats maintained on a diet without lard.However,rats fed the lard enriched with n-3 PUFA significantly decreased the level of low-density lipoprotein cholesterol in serum(p<0.05)and better hepatic antioxidant defense capacities,when compared with rats fed common lard(p<0.05).The results showed that pigs fed diet with n-3 PUFA produced lard enriched with n-3 PUFA and thus provided positive health benefits to the consumers.展开更多
基金Supported by China Agriculture Research System(CARS-36)Program for Innovative Research Team of Universities in Heilongjiang Province
文摘A total of 72 growing-finishing pigs（56 days old） were used to investigate the effects of dietary probiotics on growing performance, pork quality and serum metabolites. Using single factorial experiment design, pigs were allotted to three groups（four pens/group and six pigs/pen）. Diet treatments were a corn-soybean meal（control group） and a corn-soybean meal with 1% probiotics（probiotics group） or 80 mg kg-1colistin sulfate（antibiotics group）. Pigs were slaughtered when pigs of the lightest averaged 90 kg（157 days of age）. There was no difference（p＆gt;0.05） in average daily gain or feed/gain, and the average daily feed intake of the antibiotics group was higher than that of the probiotics and the control groups（p＆lt;0.05）. Diet supplemented with probiotics reduced the drip loss and cooking loss of pork（p＆lt;0.05）. Dietary supplementation with probiotics significantly decreased the content of triglycerides, lowdensity lipoprotein and urea nitrogen in serum（p＆lt;0.05）, and increased the content of high-density lipoprotein in serum（p＆lt;0.05）. These results suggested improving effects of dietary probiotics on pork quality and serum metabolism in growing-finishing pigs.
文摘In order to evaluate effects of Chinese medicinal herb (CMH) on growth and immunization of laying male chicks,eleven CMHs were used in this study,which are Astragalus membranacens (AM),Schisandra chinensis (SC),Ligustrum Lucidum(LL),Codonopsis,Scutellaria baicalensis (SB),Atractylodes macrocephala(AMA),Haw,Ginger,Acanthopanax scenticosns (AS),Angelica and Lycium,added to basal diet as 1%,respectively,with the basal diet supplemented with 50 mg·kg^(-1) bacitracin zinc(BZ) as the control.The body weight (BW) of birds were recorded at 1,21 and 42 days after birth,individually.The birds were vaccinated 0.50 mL against Newcastle disease (ND) with La sota vaccinel (containing mineral oil as adjuvant) by i.m.inoculation at 21 d of age.All of birds was vaccinated with F48E9 NDV by i.m.inoculation at 49 day of age.Blood samples were taken via wing vein from each bird on the day receiving the vaccination (Day-1) and on 14,21,28,30 and 34 d after vaccination (Days 14,21,28,30 and 34). Results showed that bodyweight (BW) and bodyweight gain(BWG) of the trial groups are similar to the control group.No significant differences of relative weight (RW) of bursa and spleen were observed among trial groups except for AS (P<0.05).Serum antibody titers of SC,LL,Codonopsis,SB,AMA and Lycium groups were significantly increased (P<0.05) in contrast to these control group on day-21 or 28 after immunized ND La sota vaccinel,which suggested that SC,LL,Codonopsis,SB,AMA and Lycium could augment antibody formulation.Furthermore,Compared with the control,antibody titers in SC,Codonopsis,AS,Lycium,SB and AMA group were higher (P<0.05) after vaccinated with F48E9 NDV,which suggested that SC,Codonopsis,AS,Lycium,SB and AMA have activity of antivirus.In conclusion,CMH used in the present study have similar effect on BW and BWG of chicks compared with the control.Moreover,these eleven CMH have little influence on RW of immunized organ except AS.However,SC,Codonopsis,LL,Lycium,SB and AMA could augment antibody formulation.Furthermore,SC,Codonopsis,AS,Lycium,SB and AMA have activity of antivirus compared with the control.
基金Supported by the National Key R&D Program of China(2018YFD0501202)
文摘This study evaluated the lard enriched with n-3 polyunsaturated fatty acids(PUFAs)on serum lipid composition in rats.The experiment contained two parts:(A)20 crossed pigs(Landrace×Min,60±2 kg)were assigned randomly into two dietary groups:a control group and a group fed the diet added 10%linseed based on the control diet.This part lasted 56 days and the results showed that the levels of the total n-3 PUFA in lard were improved approximately 2-fold(p<0.05),when pigs were fed 10% flaxseed compared to a control diet of corn.The lard taken from pigs was melted and preserved for rat experiment;(B)45 Sprague-Dawley rats at day 36 were randomly fed one of three diets for 42 days:the diet without added fat,the diet contained 10% common lard from pigs fed a conventional corn ration and the diet contained 10% lard enriched with n-3 PUFA from pigs fed 10% flaxseed.Rats fed lard significantly increased(p<0.05)serum cholesterol levels compared with rats maintained on a diet without lard.However,rats fed the lard enriched with n-3 PUFA significantly decreased the level of low-density lipoprotein cholesterol in serum(p<0.05)and better hepatic antioxidant defense capacities,when compared with rats fed common lard(p<0.05).The results showed that pigs fed diet with n-3 PUFA produced lard enriched with n-3 PUFA and thus provided positive health benefits to the consumers.
