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Title: Maternal nutrition of beef cattle at pasture mediates long-term consequences for offspring primarily through effects on growth early in life
Contributor(s): Greenwood, Paul (author); Robinson, Dorothy L  (author); Cafe, Linda  (author)orcid 
Publication Date: 2010
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Abstract: This study tested the hypothesis that there are long-term consequences for offspring due to nutrition of the dam, beyond effects that result from variation in growth early in life (see Greenwood and Cafe 2007). Hereford cows were mated in consecutive years to Piedmontese or Wagyu sires. When confirmed pregnant, cows (n = 513) commenced low or high pasture quality and availability treatments until parturition and/or weaning. At weaning, offspring (n = 240) within steer and heifer cohorts were selected into 4 early-life growth groups (Low-Low, Low-High, High-Low and High-High), resulting in multi-modal distributions based on maternal nutrition and offspring growth to birth and weaning. Subsequent growth, efficiency, carcass and beef quality characteristics were determined (Table 1). Stepwise regression was used to test whether there were effects of the cow's nutrition during pregnancy and lactation, over and above effects due to birth and weaning weight. The model included covariates for birth (B) and weaning (W) weight and age at measurement (A), and fixed effects of nutrition during pregnancy (P) and lactation (L), calf sex (S), year (Y) and sire breed (G). First order interactions between fixed effects, and between covariates and fixed effects were included in the analyses.
Publication Type: Conference Publication
Conference Details: Australian Society of Animal Production 28th Biennial Conference - Livestock Production in a Changing Environment, Armidale, Australia, 11th - 15th July, 2010
Source of Publication: Proceedings of the Australian Society of Animal Production 28th Biennial Conference, v.28, p. 92-92
Publisher: ASAP: Australian Society of Animal Production
Place of Publication: Online
Field of Research (FOR): 070204 Animal Nutrition
070206 Animal Reproduction
070202 Animal Growth and Development
Socio-Economic Objective (SEO): 830301 Beef Cattle
HERDC Category Description: E3 Extract of Scholarly Conference Publication
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