Effects of cross-fostering within 24 h after birth on pre-weaning behaviour, growth performance and survival rate of biological and adopted piglets
Effects of cross-fostering within 24 h after birth on pre-weaning behaviour, growth performance and survival rate of biological and adopted piglets
复制标题
DOI：
10.1016/j.livsci.2012.08.011
复制
发表时间：
2012-12-01
影响因子：
1.8
通讯作者：
Bortolozzo, F. P.
中科院分区：
文献类型：
--
作者：
Heim, G.;Mellagi, A. P. G.;Bortolozzo, F. P.
交叉寄养是指根据仔猪出生体重将仔猪转移到相同的窝产仔数。在许多商业农场中，仔猪通常被分组为100%被收养的仔猪。本实验的目的是评估仔猪在哺乳期的行为，以及评估其性能和死亡率，直至断奶时，在采用和生物学仔猪方面具有不同组成的窝。研究了三种处理：100 B（100%生物仔猪，n=13）、50 B 50 A（50%生物仔猪和50%收养仔猪，n=13）和100 A（100%收养仔猪，n=13）。在出生后20.1 +/- 0.4 h（14.3-24.7 h）内，将所有窝平均标准化为11头仔猪。在连续4天的4次哺乳期间记录仔猪的行为（分娩后第1、2、4和6天，将第1天视为交叉饲养日）。在两个时间段进行观察：TP 1（从仔猪从饲养箱中释放至排奶）和TP 2（从排奶结束至15 min后）。在第1、4、7、10、13和16天对仔猪称重。无差异（P > 0.05）在以下行为变量中的处理：遗漏哺乳事件的百分比;在TP 1时为乳头打架的次数和参与打架的仔猪的百分比;在TP 1和TP 2时发声的仔猪的百分比;在笼中其他地方每头仔猪打架的次数和参与这些打架的仔猪的百分比;在第1天的TP 2时，100 B仔猪表现出较低的玩耍行为次数，争夺乳头（P < 0.05）（100 B、100 A和50 B50 A分别为0.9、1.6和1.4），并且倾向于具有较低的百分比100 B、100 A和50 B50 A组仔猪的产蛋率分别为49.6%、67.2%和64.9%（P < 0.07）。营养喂养次数（第1、2、4和6天的总体中位数分别为4.0、3.0、4.0和4.0）、存活率（总体97.2%）和仔猪平均体重（1983 g. 2650克。处理4、7、10、13和16天分别为3411 g、4207 g和5047 g）之间相似（P > 0.05）。平均在仔猪出生后20 h进行交叉寄养对仔猪的存活和生长性能没有不良影响。(C)2012爱思唯尔有限公司版权所有。
Cross-fostering is the transference of piglets to equalise litter size according to the birth weight. In many commercial farms piglets are usually grouped in litters with 100% adopted piglets. The aim of the experiment was to assess the behaviour of piglets during the suckling period as well as to assess their performance and mortality rate up to weaning in litters with different composition in terms of adopted and biological piglets. Three treatments were studied: 100B (100% biological piglets, n=13), 50B50A (50% biological piglets and 50% adopted piglets, n=13) and 100A (100% adopted piglets, n=13). All litters were standardised to eleven piglets on average within 20.1 +/- 0.4 h (14.3-24.7 h) of birth. The behaviour of piglets was recorded during four consecutive sucklings for four days (days 1, 2, 4 and 6 after farrowing, considering day 1 as the cross-fostering day). The observations were performed at two time periods: TP1 (from release of piglets out of creep box until milk letdown) and TP2 (from the end of milk letdown up to 15 min later). Piglets were weighed at days 1, 4, 7, 10, 13 and 16. There were no differences (P > 0.05) among the treatments in the following behavioural variables: percentage of missed nursing episodes; number of fights for teats and percentage of piglets involved in fights at TP1: percentage of piglets vocalising at TP1 and at TP2: number of fights per piglet elsewhere in the cage and percentage of piglets involved in these fights; number of instances of playful behaviour per piglet and percentage of piglets involved in it. At TP2 of day 1, 100B piglets displayed a lower number (P < 0.05) of fights for teat (0.9 vs. 1.6 vs. 1.4 for 100B, 100A and 50B50A, respectively) and tended to have a lower percentage (P < 0.07) of piglets involved in these fights than 100A (49.6%, 67.2% and 64.9% for 100B, 100A and 50B50A, respectively). Nutritive nursing episodes (overall medians of 4.0, 3.0, 4.0 and 4.0 for days 1, 2, 4 and 6, respectively), survival rate (overall 97.2%) and average weight of piglets (1983g. 2650g. 3411 g, 4207 g and 5047 g for days 4, 7, 10, 13 and 16, respectively) were similar (P > 0.05) among treatments. Cross-fostering performed on average at 20 h after birth has no adverse effects on survival and growth performance of adopted piglets. (C) 2012 Elsevier B.V. All rights reserved.