Genetic parameters of drinking and feeding traits of wean-to-finish pigs under a polymicrobial natural disease challenge

Journal of Animal Science and Biotechnology

Frederic Fortin¹  Michael K. Dyck²  Graham S. Plastow²  Jack C. M. Dekkers³  Jian Cheng³  Austin M. Putz⁴  John C. S. Harding⁵  Pig Gen Canada⁶ 

[1] Centre de Développement du Porc du Québec Inc., G1V 4M6, Québec City, Canada;Department of Agriculture, Food and Nutritional Science, University of Alberta, T6G 2R3, Edmonton, AB, Canada;Department of Animal Science, Iowa State University, 50011, Ames, IA, USA;Department of Animal Science, Iowa State University, 50011, Ames, IA, USA;Hendrix Genetics, Swine Business Unit, 5831, Boxmeer, CK, The Netherlands;Department of Large Animal Clinical Science, University of Saskatchewan, S7N 5A2, Saskatoon, SK, Canada;PigGen Canada Research Consortium, N1H4G8, Guelph, Ontario, Canada;

关键词: Disease resilience;    Feeding and drinking behavior;    Genetic parameters;    Pigs;   

DOI  :  10.1186/s40104-021-00622-x

来源: Springer

【 摘 要 】

BackgroundThe pork industry faces unprecedented challenges from disease, which increases cost of production and use of antibiotics, and reduces production efficiency, carcass quality, and animal wellbeing. One solution is to improve the overall resilience of pigs to a broad array of common diseases through genetic selection. Behavioral changes in feeding and drinking are usually the very first clinical signs when animals are exposed to stressors such as disease. Changes in feeding and drinking behaviors in diseased pigs may reflect the way they cope with the challenge and, thus, could be used as indicator traits to select for disease resilience. The objectives of this study were to estimate genetic parameters of feeding and drinking traits for wean-to-finish pigs in a natural polymicrobial disease challenge model, to estimate genetic correlations of feeding and drinking traits with growth rate and clinical disease traits, and to develop indicator traits to select for disease resilience.ResultsIn general, drinking traits had moderate to high estimates of heritability, especially average daily water dispensed, duration, and number of visits (0.44 to 0.58). Similar estimates were observed for corresponding feeding traits (0.35 to 0.51). Most genetic correlation estimates among drinking traits were moderate to high (0.30 to 0.92) and higher than among feeding traits (0 to 0.11). Compared to other drinking traits, water intake duration and number of visits had relatively stronger negative genetic correlation estimates with treatment rate and mortality, especially across the challenge nursery and finisher (− 0.39 and − 0.45 for treatment rate; − 0.20 and − 0.19 for mortality).ConclusionMost of the recorded drinking and feeding traits under a severe disease challenge had moderate to high estimates of heritability, especially for feed or water intake duration and number of visits. Phenotypic and genetic correlations among the recorded feeding traits under disease were generally low but drinking traits showed high correlations with each other. Water intake duration and number of visits are potential indicator traits to select for disease resilience because of their high heritability and had moderate genetic correlations with treatment and mortality rates under severe disease.

【 授权许可】

CC BY