Ermer P M, Miller P S, Lewis A J
Department of Animal Science, University of Nebraska, Lincoln 68583-0908.
J Anim Sci. 1994 Jun;72(6):1548-54. doi: 10.2527/1994.7261548x.
Preference tests and meal pattern analyses were conducted to examine the feed intake response of weanling pigs to spray-dried porcine plasma (SDPP). In Exp. 1, 36 weanling pigs (mean +/- SD; 6.2 +/- .8 kg and 26 d of age) were allowed to choose between a SDPP diet (8.5% SDPP, 20% dried whey, 10% lactose, and .13% DL-methionine) and a dried skim milk (DSM) diet (20% each of DSM and dried whey) throughout 21 d postweaning. Twenty-eight pigs preferred the SDPP diet and seven pigs preferred the DSM diet. Preference for SDPP became apparent by d 2 (60% of total feed consumption) and increased (P < .01) to d 21 (71% of total feed consumption). Average daily feed consumption was 371 and 172 g for the SDPP and DSM diets, respectively (P < .01). The meal patterns of 16 weanling pigs (mean +/- SD; 7.2 +/- .3 kg and 26 d of age) offered either the SDPP or the DSM diet were examined in Exp. 2. On d 3, 7, and 14 postweaning, feeding behavior was observed continuously for 18 h (0600 to 2400). Time spent consuming feed and time between periods of feeding were recorded. Although the difference was not significant, pigs fed the SDPP diet consumed 27 and 6% (P = .38) more feed than pigs fed the DSM diet during the first 7 d and during the entire 21-d period, respectively. This difference was reflected in increased (P < .05) rate of feed consumption on d 3 and 7. Diet had no effect (P > .10) on meal size, the number of meals, or the percentage of time spent consuming feed. Weanling pigs prefer diets containing SDPP to those containing DSM, and the increased consumption of diets containing SDPP may be due to greater palatability.
进行了偏好测试和采食模式分析，以研究断奶仔猪对喷雾干燥猪血浆（SDPP）的采食量反应。在实验1中，36头断奶仔猪（平均±标准差；体重6.2±0.8千克，26日龄）在断奶后的21天内可以在SDPP日粮（8.5% SDPP、20% 乳清粉、10% 乳糖和0.13% DL-蛋氨酸）和脱脂奶粉（DSM）日粮（DSM和乳清粉各20%）之间进行选择。28头仔猪偏好SDPP日粮，7头仔猪偏好DSM日粮。到第2天，对SDPP的偏好就很明显了（占总采食量的60%），并在第21天增加（P < 0.01）至（占总采食量的71%）。SDPP和DSM日粮的平均日采食量分别为371克和172克（P < 0.01）。在实验2中，对16头断奶仔猪（平均±标准差；体重7.2±0.3千克，26日龄）分别提供SDPP或DSM日粮时的采食模式进行了研究。在断奶后的第3天、第7天和第14天，连续18小时（06:00至24:00）观察采食行为。记录采食所用时间和采食间隔时间。尽管差异不显著，但在前7天和整个21天期间，采食SDPP日粮的仔猪采食量分别比采食DSM日粮的仔猪多27%和6%（P = 0.38）。这种差异反映在第3天和第7天采食量增加（P < 0.05）。日粮对采食餐量、餐数或采食所用时间百分比没有影响（P > 0.10）。断奶仔猪更喜欢含SDPP的日粮而不是含DSM的日粮，含SDPP日粮采食量增加可能是由于适口性更好。
