Growth, Development and Body Composition in Three Genetic Stocks of Swine

Mw, Tess; Ge, Dickerson; Ja, Nienaber; Cl, Ferrell

doi:10.2527/jas1986.624968x

Cited by 52 publications

(33 citation statements)

References 12 publications

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“…The late maturing nature of fat, observed by many authors (Davies and Kallweit, 1979;Shields et al, 1983;Tess et al, 1986;Fortin et al, 1983;Gu et al, 1992) was also confirmed here. Wagner et al (1999) observed that the exponential equation they used described the lipid deposition as sigmoid, whereas the allometric and quadratic functions were more linear in nature.…”

Section: Temporal Growth -Fatsupporting

confidence: 89%

Influence of MHS genotype and feeding regime on allometric and temporal growth of pigs assessed by magnetic resonance imaging

Kušec¹,

Baulain²,

Kallweit³

et al. 2007

Livestock Science

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Section: Temporal Growth -Fatsupporting

confidence: 89%

Influence of MHS genotype and feeding regime on allometric and temporal growth of pigs assessed by magnetic resonance imaging

Kušec¹,

Baulain²,

Kallweit³

et al. 2007

Livestock Science

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“…Robelin and Geay (1978) estimated allometric growth coefficients for protein and water of 1.06 and 0.98, respectively, in a number of literature sources describing studies that had included various breeds. Tess et al (1986) estimate for barrows ranged from 1.10 to 1.13 for protein and ranged from 0.95 to 0.97 for water in relation to FFW. These allometric growth coefficients for cattle and pigs show a similar trend in terms of changes in protein and water deposition in the fat-free empty body.…”

Section: Discussionmentioning

confidence: 99%

Interspecies differences in the empty body chemical composition of domestic animals

Maeno

Oishi

Hirooka

2013

Animal

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Domestication of animals has resulted in phenotypic changes by means of natural and human-directed selection. Body composition is important for farm animals because it reflects the status of energy reserves. Thus, there is the possibility that farm animals as providers of food have been more affected by human-directed selection for body composition than laboratory animals. In this study, an analysis was conducted to determine what similarities and differences in body composition occur between farm and laboratory animals using literature data obtained from seven comparative slaughter studies ( n 5 136 observations). Farm animals from four species (cattle, goats, pigs and sheep) were all castrated males, whereas laboratory animals from three species (dogs, mice and rats) comprised males and/or females. All animals were fed ad libitum. The allometric equation, Y 5aX b , was used to determine the influence of species on the accretion rates of chemical components ( Y, kg) relative to the growth of the empty body, fat-free empty body or protein weights ( X, kg). There were differences between farm and laboratory animals in terms of the allometric growth coefficients for chemical components relative to the empty BW and fat-free empty BW ( P , 0.01); farm animals had more rapid accretion rates of fat ( P , 0.01) but laboratory animals had more rapid accretion rates of protein, water and ash ( P , 0.01). In contrast, there was no difference in terms of the allometric growth coefficients for protein and water within farm animals ( P . 0.2). The allometric growth coefficients for ash weight relative to protein weight for six species except sheep were not different from a value of 1 ( P . 0.1), whereas that of sheep was smaller than 1 ( P , 0.01). When compared at the same fat content of the empty body, the rate of change in water content (%) per unit change in fat content (%) was not different ( P . 0.05) across farm animal species and similar ash-to-protein ratios were obtained except for dogs. The fraction of empty body energy gain retained as fat increased in a curvilinear manner, and there was little variation among farm animals at the same fat content of the empty body. These findings may provide the opportunity to develop a general model to predict empty body composition across farm animal species. In contrast, there were considerable differences of chemical body composition between farm and laboratory animals.Keywords: allometric relationship, body composition, farm animals, interspecies comparison, laboratory animals ImplicationsIn this study, the chemical compositions of the empty body of different domestic species were compared, and the results indicated that there were common allometric relationships between two components (protein and water weights) and fat-free empty BW across farm animal species. This type of information could be useful for the development of a general model of reliably predicting chemical composition and energy content of gain in farm animal species. Furthermore, remarkable interspecies diff...

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“…In the case of liver and spleen the AGRs decreased with increasing carcass weight (P < 0.001 ). Heavier non-carcass components have also been reported for pigs from lines selected for low backfat depths (Tess et al 1986).…”

Section: Femur Shapementioning

confidence: 93%

Patterns of change with growth for muscularity and other composition characteristics of Southdown rams selected for high and low backfat depth

Abdullah¹,

Purchas²,

Davies³

1998

New Zealand Journal of Agricultural Research

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Male Southdown sheep ranging in age from birth to near maturity (c. 28 mo) from genetic lines selected for about five generations for increased (n = 40) and decreased (n = 40) weightadjusted ultrasonic backfat depth were used to investigate patterns of change in muscularity and other composition characteristics. Measures of muscularity in terms of muscle depth relative to bone length were greater for the high-backfat line in anatomical areas around or beside the femur, tibia, total pelvic limb, humerus, and scapula, but not the radius/ulna. Levels of muscularity increased at a decreasing rate with increasing carcass weight from about 1 to 36 kg in all areas. Where there was a genetic line effect on muscularity, this tended to be greater at higher carcass weights, with minimal differences at birth. Muscle to bone ratios corresponding to these measures of muscularity showed similar patterns of change and line differences. Leg bone weight was higher for the low-backfat line; for the same femur length, a number of femur dimensions were greater for that line. Carcass length at a set weight was greater for the low-backfat line, and the allometric growth ratio (AGR) for length declined with increasing carcass A97072

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Growth, Development and Body Composition in Three Genetic Stocks of Swine

Cited by 52 publications

References 12 publications

Influence of MHS genotype and feeding regime on allometric and temporal growth of pigs assessed by magnetic resonance imaging

Influence of MHS genotype and feeding regime on allometric and temporal growth of pigs assessed by magnetic resonance imaging

Interspecies differences in the empty body chemical composition of domestic animals

Patterns of change with growth for muscularity and other composition characteristics of Southdown rams selected for high and low backfat depth

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