Embryonic adenosine triphosphate:phosphodiesters ratios obtained with in vivo nuclear magnetic resonance spectroscopy (phosphorus-31): a new technique for selecting leaner broiler chickens
1994
Liu, Z. | Lirette, A. | Fairfull, R.W. | McBride, B.W.
Phosphorus-containing compounds of 18-d-old embryos from two broiler chicken lines, differing in body fat content, were measured using in vivo 31P nuclear magnetic resonance (NMR) spectroscopy. Subsequently, the same birds were slaughtered at 8 wk of age and the whole body was analyzed for body fat content. The birds of the fat line had lower (P = .002) embryonic adenosine triphosphate (ATP):phosphodiester (PDE) ratios, higher (P = .002) body fat content when adjusted to common BW, and higher (P = .047) dry matter content than the lean line. No differences (P > .05) were detected for BW between the two lines. Females of the two lines had lower (P = .002) ATP:PDE ratios, lower (P = .001) BW, higher (P = .003) adjusted fat contents, and higher (P = .003) dry matter content than the males. No interaction (P > .05) between sexes and lines was detected for any variables. Regression equations indicating a linear negative relationship (Y(body fat content) = 369.05 - 407.27 X(ATP:PDE) + .1295 X(BW), R2 = .62 to .78; or Y(body fat %) = 30.57 - 19.4 X(ATP:PDE), R2 = 49 to .71) between embryonic ATP:PDE ratios and body fat content were developed.
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