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1、DanAg International丹俄国际American system,European management,Chinese solution美式体系,欧式管理,中国方案EFFECT OF BACKFAT ON THE PRODUCTION PERFORMANCE OF TIK-TAK SOWS AND THE CORRELATION BETWEEN BODY CONDITION EVALUATION AND BACKFAT VALUE背膘对回交二元母猪生产性能的影响及体况评估与背膘值背膘对回交二元母猪生产性能的影响及体况评估与背膘值的相关性研究的相关性研究程则洪 Hong cheng
2、Tel&WeChat:项目经理Project ManagerEmail Address:Hn 非洲猪瘟导致能繁母猪产能断崖式下降,产能严重不足,这给我国养猪业带来了前所未有的挑战。为快速恢复生猪产能,大量回交二元母猪填补了能繁母猪的缺口。African swine fever has led to a precipitous drop in the production capacity of fertile sows and a serious shortage of production capacity,which has brought unprecedented
3、 challenges to Chinas pig industry.In order to quickly restore the production capacity of pigs,large number of tik-tak sows to fill the gap in breeding sows.n 回交二元母猪缺乏管理标准,如何确定回交二元母猪最佳的背膘值,是生产管理者需要面对的问题之一。As lack of management standards for tik-tak sows,how to determine the optimal backfat value for
4、 tik-tak sows is one of the issues that production managers facing currently.背景介绍INTRODUCTIONINTRODUCTIONn 分析回交二元母猪,在不同阶段背膘厚度与繁殖性能之间的关系,探讨生产中各阶段母猪最佳背膘厚度和整个妊娠阶段背膘厚度的最佳范围,为实际生产中的妊娠母猪精准管理和背膘控制提供参考依据 The relationship between backfat thickness and reproductive performance of tik-tak sows at different sta
5、ges is analyzed to explore the optimal backfat thickness of sows at each stage and the optimal range of backfat thickness throughout the gestation stage,and to provide a reference basis for accurate management and backfat control of gestating sows in actual productionn 由于背膘测量工作量相对较大,通过对同一母猪体况使用背膘卡尺、
6、眼观评分、背膘仪进行测量,并分析数据的相关性,研究体况评估是否能够代替背膘仪测量。Due to the relatively large workload of backfat measurement,the same sow body condition is measured by backfat calipers,5 score assessment and backfat meters to explore the correlation between these three methods and investigate whether body condition assessm
7、ent can replace backfat meter measurements.研究目的RESEARCHRESEARCH OBJECTIVEOBJECTIVEn 材料 Materials2020年投产的存栏5000头加系回交二元母猪场作为研究对象A sow farm with inventory of 5,000 Canadian genetic tik-tak sows in operation in 2020 was used as the study population.利用三种常见的背膘判定方法(背膘卡尺、眼观评分、背膘仪),在母猪分娩前一天、断奶前一天、进行背膘检测评分。统计
8、母猪的分娩数据及7天内断奶配种率和受胎率。Three common methods of backfat measurements(backfat calipers,5 score assessment and backfat meters)were used to measure body condition on the day before farrowing,the day before weaning.Data of sow farrowing,weaning to breeding rate within 7 days and conception rate were counte
9、d.材料和方法MATERIALS AND METHODSMATERIALS AND METHODSn 方法 Methods材料和方法MATERIALS AND METHODS MATERIALS AND METHODS 实验共统计2328头母猪有效数据 Experimental statistics 2328 valid data of sows 将母猪背膘分为4组 分别为 A组13mm以下、B组13-17mm、C组18-22mm、D组 22mm以上Sows are divided into 4 groups of backfat:Group A less than 13mm、Group B
10、13-17mm、Group C 18-22mm、Group D more than 22mm 数据采用IBM SPSS 20.0进行统计分析,不同组间数据采用单因素方差分析(One-way ANOVA),所有实验结果采用平均值标准差(meanSD)表示,并使用GraphPad Prism 8软件进行绘图,数据标注不同字母表示差异显著(P 0.05)The data were statistically analyzed using IBM SPSS 20.0.One-way ANOVA was used to analyze the data between groups,and all ex
11、perimental results were expressed as mean standard deviation(mean SD)and plotted using GraphPad Prism 8 software.n 方法 Methods材料和方法MATERIALS AND METHODS MATERIALS AND METHODS 体况评分与背膘值数据使用GraphPad Prism 8软件进行相关性分析。Correlationship between body condition score and backfat value was analyzed using GraphP
12、ad Prism 8 software.母猪背膘对生产影响的经济分析Economic analysis of the impact of sow backfat on production.n 分娩前背膘值与窝均重 Pre-farrowing backfat values and litter weight结果RESULTS RESULTS 10.0012.0014.0016.0018.0020.0022.0024.00527282930及以上窝均重 weight/litters结果:C组窝均重最高并与ABD三组差异显著(P0.
13、05),A组均重显著低于BCD三组(P0.05)Results:Group C had the highest mean litter weight and was significantly different from Group ABD(P0.05),group A was significantly lower than that of group BCD(P0.05)n 分娩前背膘值与仔猪均重 Pre-farrowing backfat values and piglet weight结果RESULTS RESULTS 1.001.101.201.301.401.501.601011
14、7324252627282930及以上仔猪均重 weight/piglet结果:C组仔猪均重最高并与AB两组差异显著(P0.05),A组均重显著低于CD两组(P0.05)Results:Group C had the highest average piglet weight and was significantly different from Group AB(P0.05).Group A was significantly lower than that of average piglet weight CD groups(p 0.05)n
15、分娩前背膘值与窝均总仔 Pre-farrowing backfat values and litter Avg Totalborn结果RESULTS RESULTS 12.5013.0013.5014.0014.5015.0015.5016.00527282930及以上窝均总仔 Avg Totalborn结果:C组窝均总仔最高并显著大于A组(P0.05),但与B、D组差异不显著(P0.05)Results:Group C had the highest litter totalborn and was significantly
16、 larger than Group A(P 0.05)n 分娩前背膘值与窝均活仔 Pre-farrowing backfat values and litter Avg liveborn结果RESULTS RESULTS 10.0011.0012.0013.0014.0015.0016.00527282930及以上窝均活仔 Avg Liveborn结果:B、C组窝均活仔最高并与A组差异显著(P0.05),与D组差异不显著(P0.05)Results:Groups B and C had the highest average
17、litter liveborn and were significantly different from Group A(P0.05).The difference with Group D was not significant(P0.05)n 分娩前背膘值与窝均死胎 Pre-farrowing backfat values and litter Avg Stillborn结果RESULTS RESULTS 0.000.200.400.600.801.001.201.40527282930及以上窝均死胎 Avg Stillb
18、orn结果:ABCD四组之间差异不显著(P0.05),但从柱状图中(左图)可以看出A、D组的死胎数高于B、C组 Results:the difference between the four groups ABCD was not significant(P0.05),but the number of stillbirths in groups A and D was higher than that in groups B and C as can be seen from the histogram(left)n 分娩前背膘值与分娩性能汇总 Pre-farrowing backfat v
19、alues and farrowing performance summary结果RESULTS RESULTS 背膘值(毫米)Backfat Thickness(mm)窝均重Weight/Litters仔猪均重 Weight/Piglet窝均活仔Avg Liveborn窝均死胎Avg Stillborn窝均总仔猪Avg Totalborn-1318.144.51 c1.330.21 b13.592.81 b0.330.7214.112.73 b13-1719.824.04 b1.360.21 b14.652.91 a0.330.6615.132.99 a18-2221.093.78 a1.4
20、70.24 a14.622.96 a0.290.7215.193.17 a22+19.913.59 b1.430.23 a14.092.61 ab0.380.7714.652.73 ab注:同列数据肩标小写字母不同表示差异显著(P0.05),相同字母或无字母表示差异不显著(P0.05)除窝均死胎外,背膘值对分娩数据性能影响差异显著(P0.05),B、C组分娩数据普遍优于A、D组,且差异显著(P0.05)With the exception of stillbirths per litter,the effect of backfat value on performance of farrow
21、ing data was significantly different(P0.05),with parturition data in groups B and C generally better than in groups A and D,with significant differences(P0.05)n 断奶前背膘值与间隔配种天数 Pre-weaning backfat values and wean to breeding interval结果RESULTS RESULTS 024685122232425间隔配
22、种天数Wean to breeding interval结论:ABC组之间差异不显著(P0.05),但与D组差异显著(P0.05)Results:No significant difference between group ABC(P0.05),but significantly different from Group D(P0.05)n 断奶前背膘值与受胎率 Pre-weaning backfat values and conception rate结果RESULTS RESULTS 结果:ABCD四组之间差异不显著(P0.05)Results:No significant differ
23、ence between the four groups ABCD(P0.05)0.880.890.90.910.920.930.940.957895122232425受胎率 Pregnancy raten 断奶前背膘值与7天内断配率 Pre-weaning backfat values and Breeding rate within 7 days after weaning结果RESULTS RESULTS 结果:BC两组之间差异不显著(P0.05),AD两组之间差异不显著(P0.05),BC组与AD组差异显著(P0.05)Results:No
24、significant difference between the BC groups(P0.05),no significant difference between the AD groups(P0.05),significant difference between the BC and AD groups(P0.05)00.10.20.30.40.50.60.70.80.9392021222324257天内断配率Breeding rate within 7 days of weaningn 断奶前背膘值与母猪繁殖性能汇总 Pre-weani
25、ng backfat values and reproduction performance summary结果RESULTS RESULTS 背膘厚度(毫米)Backfat thickness(mm)断奶7天内配种率(%)Breeding rate within 7 days of weaning(%)断奶到配种间隔(天)Wean to breeding interval(day)受胎率(%)Pregnancy rate(%)-1367.4116.64 b8.512.74 a92.930.9713-1786.433.91 a7.430.37 a92.120.7518-2284.894.86
26、a7.860.66 a91.780.9322+66.6711.54 b11.672.08 b91.971.38注:同列数据肩标小写字幕不同表示差异显著(P0.05),相同字母或无字母表示差异不显著(P0.05)除母猪受胎率外,背膘值对母猪繁殖性能影响差异显著(P0.05),B、C组分娩数据普遍优于A、D组 With the exception of conception rate,the effect of backfat value on performance of breeding data was significantly different(P0.05),with parturit
27、ion data in groups B and C generally better than in groups A and Dn 背膘仪与卡尺相关性分析 Backfat meter and calipers relevance analysis 结果RESULTS RESULTS 0300203000222426052025300300203002030n 背膘仪与眼观评分相关性分析 Backfat meter and eye asse
28、ssment relevance analysis结果RESULTS RESULTS 0603450345034501020300246n 相关性分析汇总 Summary of correlation analysis结果RESULTS RESULTS 结果:眼观评分和卡尺与背膘仪测量数值相关性较差,生产中不能使用眼观评分和卡尺测量来代替背膘仪对母猪体况的评估 Results:Backfat meters do not correlate well with ey
29、e assessment and calipers and should not be used in production as a substitute for backfat meters to assess the condition of sows胎次Parity背膘仪与眼观评分 r值Backfat meter and eye assessment 背膘仪与卡尺 r值Backfat meter and calipers 00.41540.443310.39810.185120.40950.380230.37220.513640.30690.360950.33690.3287总体 Ov
30、erall0.35870.35730r0.3 不相关 Not correlated0.3r0.5 弱相关 Weakly correlated0.5r0.8 中度相关 Moderately correlated0.8r1 强相关 Strongly correlatedn 分娩前背膘差异的经济学分析 An economic analysis of the difference in backfat the day before farrowing结果RESULTS RESULTS 按存栏5000头母猪规模农场计算。与最优组相比,A组母猪占比20%时农场一年损失134.5万元,D组母猪占比20%时农
31、场损失71.06万元。Calculation on the inventory is 5,000 heads sow farm.Compared with the optimal group,the annual farm loses is 1,345,000RMB when the sow of group A accounts for 20%,while the annual farm loss is 710,600RMB when group D sow accounts for 20%.背膘厚度(毫米)Backfat thickness(mm)窝均活仔 Avg Liveborn年产胎次
32、Litter/Year断奶前仔猪成活率pre-wean survivability仔猪价格Piglet Prices母猪效益/头/年Benefits/Sow/Year效益差值/头/年Benefit margin/Sow/Year假设群体占比Percent of groups效益/年Benefit margin/Year-1313.592.3590%60017,245.71-1,345.1420%-1,345,140.0013-1714.6518,590.850.000.0018-2214.6218,552.78-38.070.0022+14.0917,880.21-710.6420%-710,
33、640.00n 断奶前背膘差异的经济学分析 An economic analysis of the difference in backfat the day before weaning结果RESULTS RESULTS 背膘厚度(毫米)Backfat thickness(mm)断奶到配种间隔(天)Wean to breeding interval(day)年产胎次Litter/Year饲养费用/天Feeding costs/Day效益差值/头/年Benefit margin/Sow/Year假设群体占比Rate of groups效益/年Benefit margin/Year-138.51
34、2.3515 38.0720.00%-38,070.0013-177.430.000.0018-227.8615.1620.00%-15,157.5022+11.67149.4620.00%-149,460.00按存栏5000头母猪规模农场计算。与最优组相比,A组母猪占比20%时农场饲养费用增加3.8万元,D组母猪占比20%时饲养费用增加14.95万元。Calculation on the inventory is 5,000 heads sows farm.Compared with the optimal group,the annual farm increased feeding co
35、sts is 38,070RMB when the sow of group A accounts for 20%,while the annual farm increased feeding costs is 149,460RMB when group D sow accounts for 20%.n 背膘值对母猪生产性能影响显著(P0.05),综合各因素回交二元母猪分娩前最佳背膘为18-22mm,断奶前最佳背膘为13-17mmBackfat has a significant effect on sow performance(P0.05).The optimal backfat for
36、 tik-tak sows is 18-22mm before farrowing and 13-17mm before weaning taken all factors into consideration.n 眼观评分和卡尺与背膘仪测量数值相关性差,生产中不能使用眼观评分和卡尺测量来代替背膘仪测量对母猪体况的评估The correlation between measurement of backfat meters with 5 score assessment and calipers are weak and should not be used in production as
37、a substitute for backfat meters to assess the condition of sows.结论CONCLUSION CONCLUSION 致谢ACKNOWLEDGEMENT ACKNOWLEDGEMENT 马瑞修博士,丹俄首席兽医 Dr.Mauricio,Chief Veterinarian of DanAg丹俄生产管理团队 Production Management Team of DanAg丹俄健康管理团队 Health Management Team of DanAg丹俄农业技术咨询(郑州)有限公司DANAG AGRITECH CONSULTING(ZHENGZHOU)CO.,LTD感 谢 关 注!THANKS FOR YOUR ATTENTION!