Yuzhi Li - Publications

Refereed Articles

He, Y., J. Deen, G.C. Shurson, C. Chen, D.H. Keisler, and Y.Z. Li. 2016. Identifying factors contributing to slow growth in pigs. J. Anim. Sci. 94:2103-2116.

Wang, L.H. and Y.Z. Li. 2016. Effect of continuous access to feeding stalls during mixing on behavior, welfare and performance of group-housed gestating sows in different social ranks. Can. J. Anim. Sci. 10.1139/CJAS-2015-0054.
http://www.nrcresearchpress.com/doi/pdf/10.1139/CJAS-2015-0054

Li, X., S.K. Baidoo, Y.Z. Li, G.C. Shurson, and L.J. Johnston. 2014. Interactive effects of distillers dried grains with solubles and housing system on reproductive performance and longevity of sows over three reproductive cycles. J. Anim. Sci. 92:1562-1573.

Phillips, C.E., C. Farmer, J.E. Anderson, L.J. Johnston, G.C. Shurson, J. Deen, D.H. Keisler, A.M. Conner, and Y.Z. Li. 2014. Preweaning mortality in group-housed lactating sows: Hormonal differences between high risk and low risk sows. J. Anim. Sci. 92:2603-2611.

Johnston, L.J. and Y.Z. Li. 2013. Performance and well-being of sows housed in pens retrofitted from gestation stalls. J. Anim. Sci. 91:5937-5945.

Li, Y.Z. and H.W. Gonyou. 2013. Comparison of management options for sows kept in pens with electronic feeding stations. Can. J. Anim. Sci. 93:445-452.

Li, Y.Z., C.E. Phillips, L.H. Wang, X.L. Xie, S.K. Baidoo, G.C. Shurson, and L.J. Johnston. 2013. Effects of distillers' dried grains with solubles on behavior of sows kept in a group-housed system with electronic sow feeders or individual stalls. Can. J. Anim. Sci. 93:57-66.

Dong, N., Q. Ma, A. Shan, Y. Lv, W. Hu, Y. Gu, and Y. Li. 2012. Novel design of short antimicrobial peptides derived from the bactericidal domain of avian β-defensin-4. Protein and Peptide Letters. 19(11):1212-1219.

Dong, N., Q. Ma, A. Shan, Y. Lv, W. Hu, Y. Gu, and Y.Z. Li. 2012. Strand-length dependent antimicrobial activity and memrane-active mechanism of arginine- and valine-rich beta-hairpin-like antimicrobial peptides. Antimicrob. Agents Chemother. v.56(6):2994-3003.

Li, Y.Z., J.E. Anderson, and L.J. Johnston. 2012. Animal-related factors associated with piglet mortality in a bedded, group-farrowing system. Can. J. Anim. Sci. 92:11-20.

Li, Y.Z., L.H. Wang, and L.J. Johnston. 2012. Effects of farrowing system on behavior and growth performance of growing-finishing pigs. J. Anim. Sci. 90:1008-1014.

Li, Y.Z., L.H. Wang, and L.J. Johnston. 2012. Sorting by parity to reduce aggression towards young sows in group-gestation housing systems. J. Anim. Sci. 90:4514-4522.

Ma, Q., N. Dong, A. Shan, Y. Lv, Y. Li, Z. Chen, B. Cheng, and Z. Li. 2012. Biochemical property and membrane-peptide interactions of de novo antimicrobial peptides designed by helix-forming units. Amino Acids 43(6):2527-2536.

Phillips, C.E., Y.Z. Li, L.J. Johnston, A.E. Goplen, and G.C. Shurson. 2012. Technical note: A technique for ear vein catheterization in grouphoused sows. J. Anim. Sci. 90:501-504.

Wang, L.H., Y.Z. Li, and L.J. Johnston. 2012. Effects of reduced nocturnal temperature on performance and behavior of nursery pigs. J. Integ. Ag. 11:101-108.

Li, Y.Z., S.K. Baidoo, L.J. Johnston, and J.E. Anderson. 2011. Effects of tryptophan supplementation on aggression among group-housed gestating sows. J. Anim. Sci. 89:1899-1907.

Li, Y.Z. and L.H. Wang. 2011. Effects of previous housing systems on agonist behaviors of growing pigs at mixing. Appl. Anim. Behav. Sci. 132:20-26.

Li, Y.Z., L.J. Johnston, and A.M. Hilbrands. 2010. Pre-weaning mortality of piglets in a bedded, group-farrowing system. A Case Report. J. Swine Health Prod. 18(2):75-80.

Li, Y.Z. and L.J. Johnston. 2009. Behavior and performance of pigs previously housed in large groups. J. Anim. Sci. 87:1472-1478.

Strawford, M.L., Y.Z. Li, and H.W. Gonyou. 2008. The effect of management strategies and parity on the behavior and physiology of gestating sows housed in electronic sow feeding system. Can. J. Anim. Sci. 88:559-567.

Li, Y.Z. and H.W. Gonyou. 2007. Effects of stall width and sow size on behavior of gestating sows. Can. J. Anim. Sci. 87:129-138.

Li, Y.Z., B.J. Kerr, M.T. Kidd, and H.W. Gonyou. 2006. Use of supplementary tryptophan to modify the behavior of pigs. J. Anim. Sci. 84:212-220.

Li, Y.Z., L. Chenard, S.P. Lemay, and H.W. Gonyou. 2005. Water intake and wastage at nipple drinkers by growing-finishing pigs. J. Anim. Sci. 83:1413-1422.

Schmolke, S.A., Y.Z. Li, and H.W. Gonyou. 2004. Effects of group size on social behaviour following regrouping of growing-finishing pigs. Appl. Anim. Behav. Sci. 88:27-38.

Spinka M., H.W. Gonyou, Y.Z. Li, and L.A. Bate. 2004. Nursing synchronization in lactating sows as affected by activity, distance between the sows and playback of nursing vocalizations. Appl. Anim. Behav. Sci. 88:13-26.

Harris, M.J., Y.Z. Li, and H.W. Gonyou. 2003. Savaging behaviour in gilts and sows. Can. J. Anim. Sci. 83:819-821.

Schmolke, S.A., Y.Z. Li, and H.W. Gonyou. 2003. Effect of group size on performance of growing-finishing pigs. J. Anim. Sci. 81:874-878.

Li, Y.Z. and H.W. Gonyou. 2002. Analysis of belly nosing and associated behaviour among pigs weaned at 12-14 days of age. Appl. Anim. Behav. Sci. 77:285-294.

Li, Y.Z., R.J. Christopherson, and C.J. Field. 2000. Effects of beta-adrenergic receptor agonist and low environmental temperature on the immune system of growing lambs. Can. J. Anim. Sci. 80:605-613.

Li, Y.Z., R.J. Christopherson, B.T. Li, and J.A. Moibi. 2000. Effects of a beta-adrenergic agonist (L-644, 969) on performance and carcass traits of growing lambs in a cold environment. Can. J. Anim. Sci. 80:459-465.

Moibi, J.A., R.J. Christopherson, and Y.Z. Li. 2000. Effect of beta-adrenergic agonist L-644, 969 on the impact of the thermal environment on in vitro fatty acid synthesis and lipogenic enzymes in sheep. Comp. Bioch. and Physio. C125:251-263.

Li, Y.Z., M. Li, S. Li, D. Luan, Y.L. Shan, Z.B. Zhang, and Q.H. Wang. 1998. Study on an open circuit respiratory calorimetry system. ACTA Zoonutrimenta Sinica, Vol. 10:29-34.

Li, X., Y.Z. Li, Q.H. Wang, X.F. Meng, and Y.L. Shan. 1997. The effect of high temperature and clenbuterol on performance and carcass composition of broilers. J. North. Agri. Univ. 4:34-44.

Li, Y.Z., T. Ito, and S. Yamamoto. 1992. Effects of environmental temperature on heat production associated with food intake and on abdominal temperature in laying hens. Br. Poult. Sci. 33:113-122.

Li, Y.Z., T. Ito, and S. Yamamoto. 1991. Diurnal variation in heat production related to some physical activities in laying hens. Br. Poult. Sci. 32:821-827.

Li, Y.Z., T. Ito, and S. Yamamoto. 1991. Use of limited daily access to food in measuring the heat production associated with food intake in laying hens. Br. Poult. Sci. 32:829-839.

Li, Y.Z. 1990. A short review on energy expenditure of laying hens. Japanese J. of Livestock Management 25:81-84.

Li, Y.Z., T. Ito, and S. Yamamoto. 1989. Heat production and evaporative heat loss of laying hens under high environmental temperature. Japanese J. Livestock Mgmt. 25:55-58.

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Invited Papers, Conference Proceedings, Presentations

Li, Y.Z. 2015. Automated monitoring of swine behavior using accelerometers: Classification of behavior of nursery pigs from acceleration patterns. Midwestern ASAS Meeting, Des Moines, IA. (Poster) March 16-18.

Li, Y.Z. 2015. A comparison for IgG absorption between Min and Landrace piglets. Joint Annual Meeting of ASAS/ADSA/CSAS, Orlando, FL. (Poster) July 12-16.

Li, Y.Z. 2015. Determining feeder space requirement for growing-finishing pigs. Joint Annual Meeting of ASAS/ADSA/CSAS, Orlando, FL. (Poster) July 12-16.

Li, Y.Z. 2015. Identifying risk factors of slow growth of pigs from birth to market. Midwestern ASAS Meeting, Des Moines, IA. (Poster) March 16-18.

Li, Y.Z. 2015. Minimal floor space requirement for group-housed gestating sows. W2173 Multi-State Res. Committee Annual Mtg., Daytona, FL. July 17-18.

Li, Y.Z. 2015. Modern animal agriculture and pork production. Operation Main Street, Alexandria High School, FFA Banquet, Alexandria, MN. May 14.

Li, Y.Z. 2015. Physiological characteristics of slow growing pigs from birth to market. Midwestern ASAS Meeting, Des Moines, IA. (Poster) March 16-18.

Li, Y.Z. 2015. Research update on welfare and management of gestating sows. Proc., China Swine Sci. Conf., Xiamen Internatl. Conf. and Exhibition Ctr., Xiamen City, Fujian Province, China. Sep. 19-21.

Li, Y.Z. 2014. Biosecurity for alternative swine farms - The experience of WCROC. Seminar for Alternative Swine Producers, Redwood Falls, MN. Jan. 13.

Li, Y.Z. 2014. Effects of feeder space and feeder type on welfare and growth performance of growing-finishing pigs. Swine Res. Seminar, Guangdong Acad. of Ag. Sci., Guangzhou, China. Nov. 19.

Li, Y.Z. 2014. Effects of feeder space and feeder type on welfare and performance of growing-finishing pigs. Shenzhen Swine Industry Forum: Facing the Environmental and Efficiency Challenges, Shenzhen, China. Nov. 21.

Li, Y.Z. 2014. Effects of group size and social rank on welfare and performance of gestating sows in a group-housing system with floor feeding. Joint Annual Mtg. of ASAS/ADSA/CSAS, Kansas City, KS. (Poster) July 22.

Li, Y.Z. 2014. Effects of social rank on agonistic behaviors and associated injuries of gestating sows at mixing. Midwestern ASAS Mtg., Des Moines, IA. (Poster) March 18.

Li, Y.Z. 2014. Protecting low ranking sows in group-housing systems. W2173 Multi-State Res. Committee Annual Mtg., Univ. of Nebraska. July 25-26.

Li, Y.Z. 2014. Swine housing and welfare. NCERA-219 Annual Mtg., WCROC, Morris, MN. Oct. 28.

Li, Y.Z. 2014. What determines the social rank of a sow in a group- housing system? Midwestern ASAS Mtg., Des Moines, IA. (Poster) March 18.

Li, Y.Z. 2013. Animal stress and welfare. 11th World Conf. of Animal Production, Beijing, China. Oct. 15-19, 2013.

Shurson, J., L. Johnston, and Y. Li. 2014. Challenges and opportunities for optimal nutrition of the high producing sow. Asiapac, Donguan, PRC. June 29-30.

Li, Y.Z. 2013. Can feeding stalls be used by low ranking sows as hiding spaces? Midwestern Section ASAS Meeting. March 12, 2013. (Poster)

Li, Y.Z. 2013. Management options for group-house sows. Midwestern Section ASAS Meeting. March 12, 2013.

Li, Y.Z. 2013. Minimizing aggression among group-housed sows. 68th Seminar of Appl. Anim. Sci., Graduate School of Biosphere Sci., Univ. of Hiroshima, Higashi-Hiroshima, Japan. June 3.

Li, Y.Z. 2013. Research on group-hosing for sows. International Symposium on Animal Environment and Welfare, Rongchang, Chongqing, China. Oct. 19-22. pp. 32-38.

Li, Y.Z. 2013. Research on sow housing. Internatl. Symp. of Anim. Environment and Welfare, Chongqing, China. Oct. 20-21.

Li, X., G.C. Shurson, S.K. Baidoo, Y.Z. Li, and L.J. Johnston. 2013. Effects of gestation housing system on sow performance and longevity over three reproductive cycles. Manipulating Pig Production. Proc. of the 14th Biennial Conf. of the Australasian Pig Sci. Assoc. (APSA), Melbourne, Australia. Nov.

Li, Y.Z. 2012. Gestation sow housing – Options for group gestation housing. Fall Swine Educ. Seminar, NDSU Ext. Service, North Dakota State Unive., Fargo, ND. Oct. 5.

Li, Y.Z. 2012. Housing and welfare of gestating sows. Food Marketing Inst. Webinar: Sow Gestation Stall. July 18.

Li, Y.Z. 2012. Improving breeding and farrowing performance in alternative swine production. Workshop on Successful Options for Profiting from Livestock Production - Options for Making $45,000 from Hogs, Land Stewardship Project (LSP), St. Charles, MN. March 17.

Li, Y.Z. 2012. Options for group-housing of gestating sow. Fed. of Anim. Sci. Soc. and Amer. Vet. Med. Assoc. Webinar Series: Gestation Sow Housing. May 11.
http://www.fass.org/2012animalcareseries/gestation/.

Li, Y.Z. 2012. Research review on alternative swine at the WCROC. Annual Meeting of Task Force for Alternative Swine Housing, Montevideo, MN. March 8.

Li, Y.Z. 2011. Evaluation of swine housing systems in the United States. Heilongjiang Swine Conf., Wangkui County, Heilongjiang Province, China. July 7-8.

Li, Y.Z. 2011. Performance and welfare of gestating sows in group-housing systems. Internatl. Symp. on Animal Welfare, Nanjing Ag. Univ., Nanjing, China. May 6-9.

Li, Y.Z. 2011. Research on alternative swine production at WCROC. Workshop on Successful Options for Livestock Production, Land Stewardship Project (LSP), Redwood Falls, MN. Jan. 29.

Wang, L.H. and Y.Z. Li. 2011. Effects of farrowing system on agonistic behaviors of growing pigs at mixing. Proc., 72nd MN Nutrition Conf., Owatonna, MN. p. 65.

Li, Y.Z. 2010. An overview of research in swine behavior and welfare. College of Anim. and Vet. Sci., Qingdao Ag. Univ., Qingdao, China. Aug. 5.

Li, Y.Z. 2010. Building efficient alternative systems. Presented at 2010 Iowa Pork Congr., Des Moines, IA. Jan. 20-21.

Li, Y.Z. 2010. Research in animal behavior and its application. Presented at 2010 Conf. of the Chinese Environmental Management and Hygiene of Farm Animals, Innger Mongolia, China. July 30-31.

Li, Y.Z., S.K. Baidoo, L.J. Johnston, and J.E. Anderson. 2010. Effects of tryptophan supplementation on aggression among group-housed gestating sows. Proc., 71st MN Nutrition Conf., Owatonna, MN. p. 43.

Phillips, C.E., Y.Z. Li, and J. Anderson. 2010. Fear response in gestating sows. Proc., 10th ISAE North Amer. Reg. Mtg., Washington State Univ., Pullman, WA. p. 11.

Wang, L.H., and Y.Z. Li. 2010. Effects of previous housing in large groups on behavior of growing pigs at mixing. Proc., 10th ISAE North Amer. Reg. Mtg., Washington State Univ., Pullman, WA. p. 34.

Li, Y.Z. 2009. Animal welfare and animal production. College of Anim. Sci. Techn. Northeast Ag. Univ., Harbin, China (June 23), and College of Anim. Sci. Techn., Shenyang Ag. Univ., Shenyang, China (June 17).

Li, Y.Z. 2009. Effects of parity and maternal fear on piglet mortality in loose farrowing systems. Presented at Niman Ranch Annual Meeting, Ames, IA. March 20.

Li, Y.Z., C.E. Phillips, S.K. Baidoo, and L.J. Johnston. 2009. Controlling aggression among gestating sows. Allen D. Leman Swine Conf., Univ. of Minnesota. 36:197.

Li, Y.Z. 2008. The benefits to farmer of implementing higher welfare systems and practices in swine production. Proc., Importance of Farm Animal Welfare Sci. to Sustainable Ag., Internatl. Forum, Beijing, China. Chinese Economists' Soc. for the Forestry, Livestock and Fisheries Industries. March 29-30. p. 47.

Li, Y.Z. 2008. Considering behavioral and welfare needs when selecting a housing system. Presented at Allen D. Leman Swine Conf., Pre-conference Section: Gestating Sow Housing, St. Paul, MN. Sep. 21.

Li, Y.Z. 2008. Reducing pre-weaning mortality of piglets in loose farrowing systems. Presented at Pork Niche Market Working Group Mtg., Des Moines, IA. Dec. 18

Li, Y.Z. and H.W. Gonyou. 2006. Eating sequences of gestating sows in group housing with electronic sow feeders. Proc., 40th Internatl. Congr. ISAE. p. 237.

Li, Y.Z. and H.W. Gonyou. 2006. Effects of stall width and sow size on behaviour of gestating sows. 25th Annual Centralia Swine Res. Update. Vol. 2, Kirkton-Woodham Community Centre, Ontario, Canada. pp. 42-43.

Cao, H., Y.Z. Li, D. Luan, L. Sun, and X.F. Meng. 1995. Effects of cold stress and feed intake on heat balance of growing pigs of different breeds. Proc., 5th Natl. Conf. Farm Anim. Envir. Sci. Vol. 2:47-54 (in Chinese).

Meng, X.F., D. Luan, L. Sun, and Y.Z. Li. 1995. Effect of feed intake on metabolic heat production of Min Pigs. Proc., 5th Natl. Conf. Farm Anim. Envir. Sci. Vol. 2:60-64 (in Chinese).

Shan, Y.L., L. Sun, P. Yan, and Y.Z. Li. 1995. Effects of feed intake on thermal balance of growing pigs of different genetics. Proc., 5th Natl. Conf. Farm Anim. Envir. Sci. Vol. 2:55-59 (in Chinese).

Li, Y.Z., P. Yan, D. Luan, and Q.H. Wang. 1993. Effect of environmental temperature on energy metabolic rate of early weaning piglets of Min and Landrace. Proc., Internatl. Symp. Chinese Pig Breeds, Northeast Forestry Univ, Harbin, China. p.274-278.

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Abstracts

Cui, S.Q., J.E. Anderson, L.H. Wang, J. Deen, and Y.Z. Li. 2015. Automated monitoring of swine behavior using accelerometers: Classification of behavior of nursery pigs from acceleration patterns. J. Anim. Sci. 93 (E-Suppl.2):102 (Abstr. 232).

Cui, S.Q., X.B. Wang, X.K. Huang, Y. Xu, and Y.Z. Li. 2015. Association of IgG concentration in colostrum with diarrhea in piglets born to Min and Landrace sows. J. Anim. Sci. 93 (E-Suppl.2):106 (Abstr. 240).

Cui, S.Q., Y. Xu, X.K. Huang, X.B. Wang, and Y.Z. Li. 2015. A comparison for IgG absorption between Min and Landrace piglets. J. Anim. Sci. 93 (E-Suppl. 3):635 (Abstr. W48).

He, Y., J. Deen, G.C. Shurson, and Y.Z. Li. 2015. Identifying risk factors of slow growth of pigs from birth to market. J. Anim. Sci. 92 (E-Suppl.2):103 (Abstr. 235).

He, Y., J. Deen, G.C. Shurson, and Y.Z. Li. 2015. Physiological characteristics of slow growing pigs from birth to market. J. Anim. Sci. 93 (E-Suppl.2):103 (Abstr. 234).

Li, Y.Z., K. McDonalds, and H.W. Gonyou. 2015. Determining feeder space requirement for growing-finishing pigs. J. Anim. Sci. 93 (E-Suppl. 3):17 (Abstr. M30).

Seddon, Y.M., M.M. Bouvier, Y.Z. Li, and J.A. Brown. 2015. Mixing strategies for group-housed gestating sows: Effects on productivity. J. Anim. Sci. 93 (Suppl. 2):3 (Abstr. 006).

Bouvier, M.M., S.A. Ethier, Y.M. Seddon, Y.Z. Li, and J.A. Brown. 2014. Mixing strategies for group housed sows: Effects on aggression and productivity. Intl. Soc. Appl. Ethol. (ISAE), North Amer. Reg. Mtg., East Lansing, MI. (Abstr.) May 30-31.

He, Y., J. Deen, G.C. Shurson, C. Chen, and Y.Z. Li. 2014. Identifying factors associated with slow growth of pigs from birth to market. Allen D. Leman Swine Conf., Recent Res. Rep. Vol. 41:31.

He, Y., J. Deen, G.C. Shurson, and Y.Z. Li. 2014. Identifying characteristics of slow-growing pigs from birth to 9 wk of age and growth performance responses to feeder space postweaning. J. Anim. Sci. 92 (Suppl.2):6 (Abstr. 013).

Li, Y.Z., and L.H. Wang. 2014. Effects of group size and social rank on welfare and performance of gestating sows in a group-housing system with floor feeding. J. Anim. Sci. 92 (E-Suppl.2):406 (Abstr. 0812).

Wang, L.H., L.J. Johnston, and Y.Z. Li. 2014. Effects of social rank on agonistic behaviors and associated injuries of gestating sows at mixing. J. Anim. Sci. 92 (Suppl.2):115 (Abstr. 262).

Wang, L.H., L.J. Johnston, and Y.Z. Li. 2014. What determines the social rank of a sow in a group-housing system? J. Anim. Sci. 92 (Suppl.2):116 (Abstr. 263).

Johnston, L., Y.Z. Li, and A. Hilbrands. 2013. Performance and well-being of pregnant sows housed in pens retrofitted from stalls. J. Anim. Sci. 91 (E-Suppl. 2):18 (Abstr. O054).

Li, X., G.C. Shurson, S.K. Baidoo, Y.Z. Li, and L.J. Johnston. 2013. Interactive effects of distillers dried grains with solubles (DDGS) and housing system on litter performance, sow productivity, and sow longevity over 3 reproductive cycles. J. Anim. Sci. 91 (E-Suppl. 2):89 (Abstr. P003).

Li, Y.Z.and H.W. Gonyou.2013. Effects of management options on performance of gestating sows housed in an electronic sow feeder system. J. Anim. Sci. 91 (E-Suppl. 2):19 (Abstr. O057).

Swanson, J., Y. He, L.J. Johnston, and Y.Z. Li. 2013. Can feeding stalls be used by low ranking sows as hiding spaces at mixing? J. Anim. Sci. 91 (E-Suppl. 2):89 (Abstr. P001).

Li, Y.Z., L.J. Johnston, S.K. Baidoo, C.E. Phillips, L.H. Wang, X.L. Xie, and G.C. Shurson. 2012. Effect of feeding DDGS diets on behaviors of gestating sows in different housing systems. Abstracts of 2012 ADSA/ASAS Mtg. p. 507 (Abstr. W16).

Li, Y.Z., L.H. Wang, L.J. Johnston, A.M. Hilbrands, and X.L. Xie. 2012. Behavioral response of nursery pigs to reduced nocturnal temperature. Abstracts of 2012 Midwest ADSA/ASAS Mtg. p. 20 (Abstr. 52).

Li, Y.Z., L. H. Wang, L.J. Johnston, A.M. Hilbrands, and X.L. Xie. 2012. Sorting by parity improves welfare and performance of young sows in a group-housing gestation system. Abstracts of 2012 Midwest ADSA/ASAS Mtg. p. 19 (Abstr. 48).

Li, Y.Z., J.E. Anderson, and L.J. Johnston. 2011. Animal-related factors affecting piglet mortality in loose farrowing systems. J. Anim. Sci. 89 (E-Suppl.2):50.

Phillips, C.E., Y.Z. Li, J.E. Anderson, L.J. Johnston, G.C. Shurson, and J. Deen. 2011. Assessment of sow fear, parity and season on piglet mortality in loose farrowing systems. J. Anim. Sci. 89 (E-Suppl.2):49.

Phillips, C.E., Y.Z. Li, L.J. Johnston, G.C. Shurson, J. Deen, and C. Farmer. 2011. Association of sow fear with prolactin and cortisol concentrations pre- and postfarrowing. J. Anim. Sci. 89 (E-Suppl.1):12.

Li, Y.Z., J.E. Anderson, and L.J. Johnston. 2010. Effect of parity on pre-weaning mortality and growth performance of piglets in a bedded, group-farrowing system. J. Anim. Sci. 88 (E-Suppl. 3):45 (Abstr. 5).

Li, Y.Z., L.J. Johnston, and J.E. Anderson. 2010. Effect of lactation housing on growth performance of pigs. J. Anim. Sci. 88 (E-Suppl. 3):49 (Abstr. 19).

Li, Y.Z., C.E. Phillips, S.K. Baidoo, and L.J. Johnston. 2010. Controlling aggression among gestating sows. J. Anim. Sci. 88 (E-Suppl. 3):49 (Abstr. 17).

Li, Y.Z. 2009. Effects of maternal fear on pre-weaning mortality of piglets in a loose farrowing system. J. Anim. Sci. 87:(Suppl. 3):42.

Li, Y.Z. and L.J. Johnston. 2007. Effects of familiarity and weight variation on aggression among grow-finish pigs following regrouping. J. Anim. Sci. Vol. 85 (Suppl. 2):49.

Li, Y.Z., L.J. Johnston, and A.M. Hillbrands. 2006. Factors related to pre-weaning mortality of piglets in a bedded, group farrowing system. J. Anim. Sci. Vol. 84 (1):269.

Harris, M.J., Y. Li, and H.W. Gonyou. 2001. Savaging gilts and second parity sows: A study of seven commercial farms. J. Anim. Sci. 79 (1):15 (Abstr.).

Li, Y.Z. and H.W. Gonyou. 2001. Effect of supplementary tryptophan on aggression of growing pigs following regrouping. Proc., 35th Internatl. Congr. ISAE. p. 202 (Abstr.).

Li, Y.Z. and H.W. Gonyou. 2001. Water intake and wastage by grower/finisher pigs at nipple drinkers. Advances in Pork Production, Banff Pork Seminar. Vol. 12 (Abstr. 39).

Li, Y.Z., D.M. Luan, H. Cao, and R.J. Christopherson. 1996. Effect of short cold exposure on heat production of weaned piglets. Proc., Can. Soc. Anim. Sci., Lethbridge. p. 49.

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Extension & Outreach Publications

He, Y.J., G.C. Shurson, J. Deen, and Y.Z. Li. 2015. Ample feeder space benefits slow growing pigs in nursery phase. UMN Swine Ext.
http://www.extension.umn.edu/agriculture/swine/feeder-space-benefits-slow-growing-pigs/index.html

Li, Y.Z. 2015. Housing and management options for group-housed gestating sows. Educational Webcast Series, eXtension. March 6.
http://articles.extension.org/pages/72676/novel-livestock-housing

Li, Y.Z., W. Martin, and S. Schieck. 2015. Biosecurity for alternative pig farms. Pig Information Gateway. Nov. 11.
http://porkgateway.org/resource/biosecurity-for-alternative-pig-farms

Li, Y.Z. 2014. New project in 2015: Research on tail biting and tail docking in pigs. UMN Swine Ext.
http://www.extension.umn.edu/agriculture/swine/research-on-tail-biting-and-docking/index.html

Li, Y.Z. 2014. Sow welfare research update: Solving the problem of hunger and aggression in gestating sows. UMN Ext.
http://www.extension.umn.edu/agriculture/swine/solving-the-problem-of-hunger-and-aggression-in-gestating-sows/index.html

Li, Y.Z. 2014. What determines the social rank of a sow in a group-housing system? UMN Swine Ext.
http://www.extension.umn.edu/agriculture/swine/what-determines-social-rank-of-sow/index.html

Martin, W., S. Schieck, and Y.Z. Li. 2014. Biosecurity for alternative pig farms. UMN Ext., Small Farms.
http://www.extension.umn.edu/food/small-farms/livestock/swine/biosecurity-for-alternative-pig-farms/

Li, Y.Z. 2012. Minimizing aggression among group-housed gestating sows at mixing. Pork Information Gateway, PIG 05-03-01.
http://porkgateway.org/resource/minimizing-aggression-among-group-housed-gestating-sows-at-mixing/

Li, Y.Z. 2011. How much space does a sow need in a group-housing system? UMN Swine Ext.
http://www.extension.umn.edu/swine/components/pubs/how-much-space.htm

Li, Y.Z. 2011. Sorting sows by parity to reduce aggression in group-housing systems. UMN Swine Ext.
http://www.extension.umn.edu/swine/components/pubs/sorting-sows-by-parity.htm

Li, Y.Z. and H.W. Gonyou. 2001. Effects of nipple drinker height and flow rate on water wastage in grower and finisher pigs. Prairie Swine Centre Ann. Rep. 2001. p. 32.

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Popular Press

Li, Y.Z. 2015. A new research project of floor space allowance for group-housed gestating sows. News From the WCROC. Feb. 25.

Li, Y.Z. 2015. A new research project on swine welfare (tail docking and tail biting) at the WCROC. News from the WCROC. May 27.

Li, Y.Z. 2015. Tail biting in pigs – What do we know about it? News from the WCROC. Sep. 2.
http://wcroc.cfans.umn.edu/tail-biting

Li, Y.Z. 2014. Biosecurity on alternative swine farms. West Central News-WCROC. Jan. 22.

Li, Y.Z. 2014. Tail biting and tail docking in pigs. West Central News-WCROC. Nov. 12.

Li, Y.Z. 2014. Update on sow welfare research at the 2014 Animal Science Annual Joint Meeting. West Central News-WCROC. Aug. 6.

Li, Y.Z. 2014. Using individual stalls to protect low ranking sows in group housing systems. Morris Sun Tribune, Farm Edition. March 15.

Li, Y.Z. 2014. What determines the social ranking of a sow in a group-housing system? West Central News, WCROC. April 30.

Johnston, L., Y.Z. Li, and W.F. Lazarus. 2012. Retrofitting gestation stalls to grouphousing – A field study on performance and economics. National Hog Farmer. Aug. 15, 2012. p. 14-19.

Li, Y.Z. and L.J. Johnston. 2012. 11 tips for managing pregnant sows in group housing. Ag News Wire, UMN Ext.
http://blog.lib.umn.edu/umnext/news/2012/07/11-tips-for-managing-pregnan...

Johnston, L.J. and Y.Z. Li. 2011. Reducing nocturnal temperature for nursery pigs. Morris Sun Tribune (Ag Special Supplement), Morris, MN. D4. March 12.

Li, Y.Z. and L.J. Johnston. 2011. Grouping parity 1 sows with gilts improves welfare, performance. National Hog Farmer, 2011 Swine Res. IV-8 Review): 19-20. Dec. 15.
http://nationalhogfarmer.com/animal-well-being/2011-swine-research-revie...

Li, Y.Z. 2010. Animal behavior and welfare domain in Pig Information Gateway. West Central News, Univ. of Minnesota. April 28.

Li, Y.Z. 2010. Animal welfare assessment – Animal-based approach. West Central News, Univ. of Minnesota. Nov. 10.

Li, Y.Z. 2010. Controlling aggression among group-housed gestating sows. The Land, The Pork Professor. A30. March 19.

Li, Y.Z. 2010. Reducing piglet mortality in loose farrowing systems. The Land. June 11.

Li, Y.Z., J.E. Anderson, L.J. Johnston, and A.M. Hilbrands. 2010. Effect of parity on pre-weaning mortality and growth performance of piglets in a bedded, group-farrowing system. Morris Sun Tribune (A Special Supplement), Morris, MN. D9. March 14.

Li, Y.Z. 2009. Controlling aggression among group-housed gestating sows. West Central News, Univ. of Minnesota. June 24.

Li, Y.Z. 2009. Is maternal fear associated with piglet survival in loose farrowing systems? Morris Sun Tribune (A Special Supplement), Morris, MN. D9. March.

Li, Y.Z. 2009. Pre-weaning mortality of piglets – How can we solve the problem? West Central News, Univ. of Minnesota. Oct. 14.

Li, Y.Z. 2009. Transition of gestation stalls to group-housing – How much space does a sow need in a group-housing system? West Central News, Univ. of Minnesota. March 4.

Li, Y.Z. 2008. Behavior and performance of pigs previously housed in large groups. West Central News, Univ. of Minnesota. May 5.

Li, Y.Z. 2008. Is maternal fear associated with piglet survival in loose farrowing systems? West Central News, Univ. of Minnesota. Sep. 17.

Li, Y.Z. 2008. What is the real picture of piglet pre-weaning mortality in loose farrowing systems? West Central News, Univ. of Minnesota. July 9.

Li, Y.Z. and L.J. Johnston. 2008. Behavior and performance of pigs previously housed in large groups. Morris Sun Tribune (A Special Supplement), Morris, MN. D8. March 2008.

Li, Y.Z. 2007. Defining and assessing animal welfare. West Central News, Univ. of Minnesota. July 18.

Li, Y.Z. 2007. Piglet pre-weaning mortality in alternative swine housing. West Central News, Univ. of Minnesota. Nov. 7.

Li, Y.Z., L.J. Johnston, and A.M. Hilbrands. 2007. Reducing pre-weaning mortality of piglets in a loose farrowing system. Morris Sun Tribune (A Special Supplement), Morris, MN. D10. March.

Martin, W. and Y.Z. Li. 2007. Alternative swine production roundtable meetings held in 2007. West Central News, Univ. of Minnesota. April 4.