墨西哥尤卡坦州一家商业农场第一胎和第二胎产仔数对母猪累积生产率的影响

Q3 Agricultural and Biological Sciences

Tropical and Subtropical Agroecosystems Pub Date : 2024-03-12 DOI:10.56369/tsaes.5182

J. Ek-Mex, J. C. Segura-Correa, G. A. Muñoz-Osorio

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引用次数: 0

摘要

背景。第二胎产仔数（RSP）的减少会影响母猪每个生产年限的累积生产率。目的在墨西哥尤卡坦东部地区的一个商业化农场中，比较根据第一次产仔存活仔猪数（LNV）和第二次产仔存活仔猪数减少或增加对淘汰产仔数（NPD）、累计 LNV 和母猪每生产年限断奶数的影响进行的母猪分组。研究方法。使用了 404 头淘汰母猪的数据。将母猪分为六组：第一次产仔时LNV数量少且有RSP（B-RSP）、第二次产仔时LNV数量增加且数量少（B-ISP）、中等且有RSP（M-RSP）、中等且有ISP（M-ISP）、高且有RSP（A-RSP）和高且有ISP（A-ISP）。反应变量为NPD、母猪生产期内累计活产仔猪数（LNVP）和母猪生产期内累计断奶仔猪数（LDVP）。结果不同母猪组之间的NPD和LDVP没有差异（P>0.05）。B-RSP 组和 B-ISP 组母猪的 LNVP 数量最少（P<0.05）。结论在本研究条件下，母猪在猪场期间的NPD和LDVP不受RSP或ISP的影响。第一次产仔数少的母猪，第二次产仔数增加或减少都不会影响LNVP。

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EFECTO DEL TAMAÑO DE CAMADA EN PRIMER PARTO Y SEGUNDO PARTO SOBRE LA PRODUCTIVIDAD ACUMULADA DE LAS CERDAS, EN UNA GRANJA COMERCIAL DE YUCATÁN, MÉXICO

Background. Litter size reduction at second farrowing (RSP) affects cumulative productivity per productive life of sows. Objective. To compare groups of sows according to their classification by number of piglets born alive (LNV) at first farrowing and reduction or increase of LNV at second farrowing on the number of farrowings at culling (NPD), cumulative LNV and weaned per productive life of sows in a commercial farm in the eastern zone of Yucatan, Mexico. Methodology. Data from 404 culled sows were used. Six groups of sows were established: low number of LNV at first farrowing with RSP (B-RSP), low with increased number of LNV at second farrowing (B-ISP), medium with RSP (M-RSP), medium with ISP (M-ISP), high with RSP (A-RSP) and high with ISP (A-ISP). The response variables were NPD, cumulative piglets born alive during the productive life of the sows (LNVP) and cumulative piglets weaned during the productive life of the sows (LDVP). Results. No difference was found between the different sow groups for NPD and LDVP (P>0.05). The lowest number of LNVP was obtained in sows of groups B-RSP and B-ISP (P<0.05). Conclusion. Under the conditions of this study, NPD and LDVP of sows during their stay on the farm were not affected by RSP or ISP. LNVP was not affected by reduction or increase of piglets at second farrowing in sows with small litters at first farrowing.

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来源期刊

Tropical and Subtropical Agroecosystems Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

24 weeks

期刊介绍： The journal is an international peer-reviewed publication devoted to disseminate original information contributing to the understanding and development of agroecosystems in tropical and subtropical areas. The Journal recognizes the multidisciplinary nature of its scope and encourages the submission of original manuscripts from all of the disciplines involved in this area. Original contributions are welcomed in relation to the study of particular components of the agroecosystems (i.e. plant, animal, soil) as well as the resulting interactions and their relationship/impact on society and environment. The journal does not received manuscripts based solely on economic acpects o food technology.