Evaluation of urinary creatinine excretion to estimate in vivo body composition of Belgian Blue double-muscled bulls

Campeneere, Sam De; Fiems, L. O.; Vanacker, J.M.; Boucqué, C. V.

doi:10.1051/animres:2000124

Cited by 5 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This method generates juvenile growth trajectories that closely approximate those produced using conventional body weights (43,49). Creatinine production is specifically diagnostic of muscle mass (44,46,47,(74)(75)(76)(77), one dimension of overall body size. It is possible that there is important variance in fat mass or long bone growth not accounted for in this study.…”

Section: Discussionmentioning

confidence: 99%

Faster reproductive rates trade off against offspring growth in wild chimpanzees

Thompson

Muller

Sabbi

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Life history theory predicts a trade-off between offspring quality and quantity. Among large-bodied mammals, prolonged lactation and infant dependence suggest particularly strong potential for a qualityquantity trade-off to exist. Humans are one of the only such species to have been examined, providing mixed evidence under a peculiar set of circumstances, including extensive nutritional provisioning by nonmothers and extrasomatic wealth transmission. Here, we examine trade-offs between reproductive rate and one aspect of offspring quality (body size) in wild chimpanzees (Pan troglodytes schweinfurthii), a species with long periods of infant dependence and little direct provisioning. Juvenile lean body mass, estimated using urinary creatinine excretion, was positively associated with the interval to the next sibling's birth. These effects persisted into adolescence and were not moderated by maternal identity. Maternal depletion could not explain poor offspring growth, as older mothers had larger offspring, and low maternal energy balance during lactation predicted larger, not smaller, juvenile size. Instead, our data suggest that offspring growth suffers when mothers wean early to invest in new reproductive efforts. These findings indicate that chimpanzee mothers with the resources to do so prioritize production of new offspring over prolonged investment in current offspring.life history | growth | reproduction | primates | weaning P arents face a fundamental life-history trade-off between producing more offspring and investing in the quality of each progeny (1-4). This offspring quality-quantity trade-off, along with a trade-off between reproductive investment and parental survival, means that maximizing reproductive rates is often not the strategy that maximizes fitness (5-7). The quality-quantity trade-off has been empirically demonstrated in species that produce litters or clutches, where large litter size often leads to small offspring size, slow growth rates, and reduced survival, particularly under conditions of ecological stress (8-11). Comparative analyses also support a negative interspecific relationship between reproductive rate and offspring size (12, 13). The quality-quantity trade-off has rarely been examined in species for which single births are the norm, and for which reproductive rate is determined by the interval between successive births. Such species are important tests of the model, as a slow breeding strategy suggests a particularly potent trade-off between offspring investment and reproductive rate. Understanding how individuals negotiate this trade-off can provide important insights into the evolution of reproductive biology and behavior.Data on humans are valuable because humans invest intensively in offspring, yet have highly variable reproductive rates. Many studies find the predicted negative relationship between reproductive rates and offspring growth or health (14-18) or demonstrate fitness maximization at intermediate levels of fertility (19-21). For example, when a water tap was ...

show abstract

Section: Discussionmentioning

confidence: 99%

Faster reproductive rates trade off against offspring growth in wild chimpanzees

Thompson

Muller

Sabbi

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

Technical note: Variation in muscle mass in wild chimpanzees: Application of a modified urinary creatinine method

Thompson¹,

Muller²,

Wrangham³

2012

American J Phys Anthropol

View full text Add to dashboard Cite

Individual body size and composition are important variables for a variety of questions about the behavioral ecology and life histories of non-human primates. Standard methodologies for obtaining body mass involve either capture, which poses risks to the subject, or provisioning, which can disrupt the processes being studied. There are no methods currently available to assess body composition from living animals in the wild. Because of its derivation in muscle, the amount of creatinine that an individual excretes in 24 hours is a reliable and frequently used indicator of relative muscle mass in humans and laboratory animals. Although it is not feasible to collect 24-hour urine samples from wild primates, we apply here a simple method to approximate muscle mass variation from collections of spot urine samples. Specific gravity (SG), an alternative method for assessing urinary water content, is both highly correlated to creatinine and free of mass-dependent effects. Individuals with greater muscle mass should excrete more creatinine for a given SG. We examine this relationship in a dataset of 12,598 urine samples from wild chimpanzees in the Kibale National Park, Uganda. As expected from known differences in body composition, the slope of the relationship between SG and creatinine is significantly greater in adult males than adult females and in adults versus immature individuals. Growth curves generated through this method closely approximate published weight curves for wild chimpanzees. Consistent with the role of testosterone in muscle anabolism, urinary testosterone predicted relative creatinine excretion among adult male chimpanzees.

show abstract

Effect of an energy restriction followed by a re-alimentation period on efficiency, blood metabolites and hormones in Belgian Blue double-muscled cows

Fiems¹,

Boever²,

Vanacker³

et al. 2013

Animal Feed Science and Technology

View full text Add to dashboard Cite

Evaluation of urinary creatinine excretion to estimate in vivo body composition of Belgian Blue double-muscled bulls

Cited by 5 publications

References 11 publications

Faster reproductive rates trade off against offspring growth in wild chimpanzees

Faster reproductive rates trade off against offspring growth in wild chimpanzees

Technical note: Variation in muscle mass in wild chimpanzees: Application of a modified urinary creatinine method

Effect of an energy restriction followed by a re-alimentation period on efficiency, blood metabolites and hormones in Belgian Blue double-muscled cows

Contact Info

Product

Resources

About