机构地区:[1]河南农业大学牧医工程学院,郑州450002 [2]河南省畜牧总站,郑州450002
出 处:《黑龙江畜牧兽医》2020年第15期1-6,共6页Heilongjiang Animal Science And veterinary Medicine
基 金:国家重点研发计划项目(2018YFD0501200);河南省生猪产业技术体系项目(S2012-06-G03)。
摘 要:为了研究不同饲养模式对母猪繁殖性能的影响,试验整理了河南省某公司群养模式下母猪5 625窝和限位栏饲养模式下母猪5 086窝的繁殖记录(包括杜洛克猪、大白猪、长白猪),采用独立样本t检验的方法对不同饲养模式下初产及经产母猪繁殖性能进行了研究。结果表明:在产仔数方面,相比于限位栏饲养模式,经产母猪在群养模式下总产仔数提高了0.63头、产活仔数提高了0.64头、健仔数提高了0.79头、畸形数降低了0.01头(P<0.01)。在生长性能方面,相比于限位栏饲养模式,初产母猪在群养模式下所产仔猪平均初生重提高了0.11 kg、断奶仔猪数提高了0.55头、平均断奶重提高了0.46 kg(P<0.01);经产母猪在群养模式下所产仔猪初生窝重提高了3.44 kg、平均初生重提高了0.18 kg、断奶仔猪数提高了0.61头、平均断奶重提高了0.59 kg(P<0.01)。在杜洛克、长白、大白三个品种之间,初产及经产母猪的产仔数、活仔数、断奶仔猪数、断奶重等各项繁殖相关参数多在群养模式下升高,显现出了一致性。在发情及平均使用胎次方面,群养模式下母猪断奶后再发情间隔缩短了0.77 d(P<0.01),年均胎次增多了0.27胎(P<0.05)。说明群养模式下,母猪整体繁殖性能及利用率优于限位栏饲养模式,杜洛克、长白、大白初产及经产母猪的繁殖相关参数表现出了相似的变化趋势,且群养模式下母猪初情和初配日龄均有所提前,生产周期更短。In order to investigate the effects of different feeding patterns on sow reproductive performance, the breeding records(including Duroc, Yorkshire, and Landrace)of 5 625 sows under group housing feeding pattern and 5 086 sows under stall housing feeding pattern were selected and used to study the reproductive performance between primiparous and multiparous sows under different feeding patterns by independent T test. The results showed that the total pigs born, the pigs born alive and the pigs born healthy among the multiparous sows under the group housing feeding pattern increased by 0.63,0.64 and 0.79(P<0.01), respectively, comparing with stall housing feeding pattern, while the pigs born malformation decreased by 0.01(P<0.01). In pigs born quality parameters, compared with the limited pen feeding mode, the average birth weight of piglets, the number of weaned pigs and the average weaning weight in primiparous sows under the group housing feeding pattern increased by 0.11, 0.55 and was 0.46 kg(P<0.01), respectively;the litter birth weight, the average birth weight of piglets, the number of weaned pigs and the average weaning weight in the multiparous sows under the group housing feeding pattern increased by 3.44, 0.18, 0.61 and 0.59 kg(P<0.01), respectively. The reproductive-related parameters such as total pigs born, pigs born alive, number of weaned pigs and average weaning weight were all increased under the group housing feeding pattern and showed consistency in primiparous sows and multiparous sows among Duroc, Landrace and Yorkshire breeds. In terms of reproductive parameters, the weaning-to-estrus interval of group housing sows was shorted by 0.77 days(P<0.01), and the average number of births per year was increased by 0.27(P<0.05). In conclusion, the reproductive performance and utilization rate of sows under the group housing feeding pattern was better than that in the stall housing feeding pattern;the reproductive related parameters in primiparous sows and multiparous sows among Duroc, Landrace and Yor
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