Abstract
The objective of this study was to determine the effect of dietary manganese on the reproductive performance of sows. Sows (n = 39; 231 ± 8 kg) were randomly assigned to one of three dietary levels of supplemented Mn (CON: 0 ppm Mn; PRO20: 20 ppm Mn; PRO40: 40 ppm Mn). The experimental treatments were initiated at breeding and continued through two parities. The sows were blocked by parity within each farrowing group. The data were analyzed as a randomized complete block design using the MIXED procedure of SAS with diet as a fixed effect and block as a random effect. The lactation feed intake increased in the PRO20 sows compared to the CON and PRO40 sows (p < 0.05). The PRO20 and PRO40 sows farrowed piglets with improved average daily gain from birth to weaning (CON 214 g/day; PRO20 237 g/day; 220 g/day; p < 0.05) compared to the CON sows. The milk fat content was lower in the PRO20 (5.5%) and PRO40 sows (6.1%; p < 0.05) compared to the CON sows (7.8%), possibly due to increased milk demand. Supplementary dietary Mn throughout two gestation and lactation cycles led to improved birth weights and pre-weaning growth of piglets.
Subject
Plant Science,Agronomy and Crop Science,Food Science
Reference58 articles.
1. Kyriazakis, I., and Whittemore, C.T. (2006). Whittemore’s Science and Practice of Pig Production, Blackwell Publishing. [3rd ed.].
2. Swine Nutrition: Nutrient Usage during Pregnancy and Early Postnatal Growth, An Introduction;Schoknecht;J. Anim. Sci.,1997
3. Impact of Swine Reproductive Technologies on Pig and Global Food Production;Lamb;Advances in Experimental Medicine and Biology,2014
4. Knox, R.V., Dziuk, P., and Hollis, G.R. (2005). The Changing Nature of Pig Reproduction Livestock Trail, The University of Illinois. Available online: http://livestocktrail.illinois.edu/swinerepronet/paperDisplay.cfm?ContentID=7588.
5. Effects of dietary electrolyte balance on the chemistry of blood and urine in lactating sows and sow litter performance;Derouchey;J. Anim. Sci.,2003
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献