飼喂中鏈和長(zhǎng)鏈脂肪酸甘油酯對(duì)體重輕的新生仔豬存活率的影響

畜牧編輯

　　第22期：飼喂中鏈和長(zhǎng)鏈脂肪酸甘油酯對(duì)體重輕的新生仔豬存活率的影響

　　作者：J. Casellasa,*, X. Casasc, J. Piedrafitaa,
　　X. Mantecab aDepartament de Cie`ncia Animal
　　i dels Aliments, Universitat Autonoma de Barcelona,
　　08193 Bellaterra, Barcelona,
　　Spain bDepartament de Biolog ́ıa Cel lular,
　　de Fisiologia i d’Immunologia,
　　Universitat Auto`noma de Barcelona,
　　08193Bellaterra,Barcelona,Spain  cDivasa Farmavic S.A., 08503 Gurb-Vic, Barcelona, Spain

　　來(lái)源：Preventive Veterinary Medicine 67 (2005) 213–221

　　翻譯：腸動(dòng)力研究院 梁琦

　　摘要

　　通過(guò)分類生存分析法研究了508頭仔豬的斷奶前存活率，評(píng)估添加中鏈-長(zhǎng)鏈脂肪酸甘油酯（MCT-LCT）對(duì)體重輕的新生仔豬的影響，并確定了其他影響因素。出生體重（BW）<1250 g的98頭仔豬中有一半在出生的前3天內(nèi)每天飼喂1.95 g MCT-LCT，與未喂食的另一半的仔豬相比，其死亡風(fēng)險(xiǎn)降低了1.9倍。飼喂MCT-LCT的這批仔豬的死亡風(fēng)險(xiǎn)率（HR）與同批出生體重較重的410頭仔豬相比差異不顯著。然而，與同群體重較重的仔豬相比，出生體重較輕的新生仔豬的死亡風(fēng)險(xiǎn)率（HR）為2.8，并且出生活仔數(shù)高于12頭的窩群HR為4.5。在幾個(gè)月的實(shí)驗(yàn)過(guò)程中，來(lái)自初產(chǎn)母豬的仔豬提高了死亡風(fēng)險(xiǎn)率（HR = 4.0）。

　　關(guān)鍵詞：仔豬飼喂和營(yíng)養(yǎng)；能量供應(yīng)；中鏈脂肪酸；斷奶前仔豬死亡率；生存分析

　　以下是實(shí)驗(yàn)中相關(guān)圖表

　　表1：乳化的中鏈和長(zhǎng)鏈脂肪酸甘油脂的脂肪酸組成檢測(cè)

　　圖1：研究期間仔豬死亡的分布圖

　　表2：從出生到死亡或斷奶的仔豬數(shù)量的分析，死亡數(shù)量，和死亡率（HR）

　　圖2：根據(jù)出生體重和能量供應(yīng)，分析仔豬從出生到斷奶的存活函數(shù)。NS：不添加；S：添加。注釋：其余的重要因素分別為：2003年7月分娩批次，> 12頭窩群的活仔豬，第三次分娩的母豬和正常的相對(duì)出生體重。

　　啟示
　　該研究表明集中補(bǔ)充低劑量的MCT-LCT給出生體重較輕的那部分仔豬，能夠提高出生體重最輕的仔豬從出生到21日齡的存活率。

　　Abstract
　　The pre-weaning survival of 508 piglets was studied with a categorical survival analysis, evaluating the effect of medium–long-chain triglyceride (MCT–LCT) supplementation on small newborn pigs, and determining additional risk factors. Half of the 98 piglets born with birth weight (BW) < 1250 g received 1.95 g of MCT–LCT each 24 h during the first 3 days of life, and their death hazard was reduced 1.9-fold in relation with small unsupplemented siblings. The death hazard ratio (HR) of supplemented animals compared to 410 heavier littermates was not different. However, the HR for newborn pigs that were small in relation with their siblings was 2.8, and the HR for litters with >12 piglets born alive was 4.5. There was variation across months, and also piglets from primiparous sows had increased hazard of death (HR = 4.0).

　　Keywords: Pig-feeding and nutrition; Energetic supplement; Medium-chain fatty acids; Pre-weaning mortality; Survival analysis

　　Conclusion
　　Our results suggest that concentrating the supplementation on a relatively small proportion of piglets and with a reduced dose of MCT–LCT we can improve survival to day 21 of the smallest piglets.

　　轉(zhuǎn)自：腸動(dòng)力