适度补充膳食硼可改善断奶仔猪的生长性能、粗蛋白消化率和腹泻指数，且不受卫生条件影响。
Moderate dietary boron supplementation improved growth performance, crude protein digestibility and diarrhea index in weaner pigs regardless of the sanitary condition.
作者信息
Cho Hyun Min, Macelline Shemil Priyan, Wickramasuriya Samiru Sudharaka, Shin Taeg Kyun, Kim Eunjoo, Son Hong Cheol, Heo Jung Min
机构信息
Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea.
School of Life and Environmental Sciences, The University of Sydney, NSW 2006, Australia.
出版信息
Anim Biosci. 2022 Mar;35(3):434-443. doi: 10.5713/ab.21.0110. Epub 2021 Jun 24.
OBJECTIVE
The study was conducted to investigate the impact of boron supplementation on nutrient digestibility, inflammatory responses, blood metabolites and diarrhea index, and their relevance to growth performance in weaned pigs housed in good and poor sanitary environments for 14 days after weaning.
METHODS
A total of 108 male pigs (Duroc×[Yorkshire×Landrace]) weaned at 21 days of age were used in a randomized complete block design with 2×3 factorial arrangement. Pigs were assigned to three boron treatments (0, 5, and 10 mg/kg) under two environments (good and poor sanitary) to give six replicates per treatment (3 pigs per replicate). On 0, 7, and 14 days, one pig per replicate was euthanized to collect, ileum tissue samples, and rectal fecal samples.
RESULTS
Boron supplementation quadratically influenced (p<0.001) feed intake and weight gain in pigs housed in good sanitary conditions from 1 to 14 days post-weaning where pigs offered 5 mg/kg boron optimized weight gain and feed intake. There is a quadratic interaction (p = 0.019) on feed intake for 1 to 14 days post-weaning where 5 mg/kg boron increased feed intake in good sanitary conditions. Pigs housed in the poor sanitary environment decreased (p<0.001) villus height and crypt depth in ileum at days 7 and 14. On day 7 and 14, crude protein digestibility was quadratically influenced (p<0.05) by boron supplementation. Boron supplementation linearly increased (p<0.05) plasma calcium and cholesterol levels whilst linearly (p = 0.005) reducing plasma triglyceride concentrations. Diarrhea index was quadratically influenced (p<0.05) by boron supplementations regardless of sanitary conditions where 5 mg/kg boron inclusion achieved the lowest diarrhea index.
CONCLUSION
Pigs offered 5 mg/kg of boron increased weight gain which may be deduced by improved dry matter, crude protein, and energy digestibility regardless of the sanitary conditions.
目的
本研究旨在调查补充硼对断奶仔猪营养物质消化率、炎症反应、血液代谢物和腹泻指数的影响，以及它们与断奶后14天饲养在良好和恶劣卫生环境中的生长性能的相关性。
方法
选用108头21日龄断奶的雄性猪（杜洛克×[约克夏×长白]），采用随机完全区组设计，2×3析因排列。将猪分为三种硼处理组（0、5和10 mg/kg），置于两种环境（良好和恶劣卫生条件）下，每个处理6个重复（每个重复3头猪）。在第0、7和14天，每个重复处死1头猪，采集回肠组织样本和直肠粪便样本。
结果
补充硼对断奶后1至14天饲养在良好卫生条件下的猪的采食量和体重增加有二次影响（p<0.001），其中添加5 mg/kg硼的猪体重增加和采食量最佳。断奶后1至14天的采食量存在二次交互作用（p = 0.019），在良好卫生条件下，5 mg/kg硼增加了采食量。饲养在恶劣卫生环境中的猪在第7天和第14天回肠绒毛高度和隐窝深度降低（p<0.001）。在第7天和第14天，补充硼对粗蛋白消化率有二次影响（p<0.05）。补充硼使血浆钙和胆固醇水平线性升高（p<0.05），同时使血浆甘油三酯浓度线性降低（p = 0.005）。无论卫生条件如何，腹泻指数受补充硼的二次影响（p<0.05），添加5 mg/kg硼时腹泻指数最低。
结论
无论卫生条件如何，添加5 mg/kg硼的猪体重增加，这可能是由于干物质、粗蛋白和能量消化率提高所致。
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