Journal of Pet Animal Nutrition
Online ISSN : 2185-7601
Print ISSN : 1344-3763
ISSN-L : 1344-3763
Volume 11, Issue 2
Displaying 1-8 of 8 articles from this issue
  • H. Muramatsu, T. Erikawa, M. Takeishi, Y. Takahashi, A. Kurosawa, S. I ...
    2008 Volume 11 Issue 2 Pages 61-66
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
    In order to predict lysine and valine requirements in rabbits using the response of plasma free amino acid concentrations to the amounts of both amino acids in diets,17 Japanese white rabbits, aged 2months, were given experimental diets containing five levels of lysine and valine at 3 CP levels of 12,16 and 20%. Rabbits were fed each diet for successive 4 days. Blood was collected from the vein of the ear at 14: 00on day 4 and the free amino acid concentrations in the plasma were determined. Although the body weight gain, feed efficiency and apparent CP digestibility for CP 20% group showed the highest values, but no significant differences were recognized among 3 dietary CP levels. Metabolic fecal CP calculated by the extrapolation method was 0.88 g/d, resulting in similar true digestibility irrespective of dietary CP levels. Plasma lysine concentration only in the CP 12% group remained constant (basal line) when lysine intake was less than 0.6g/d, and then increased linearly in response to the increase in lysine intake. The lysine requirement at 12%CP was obtained as an intersection between the basal line and increasing line, leading to the value of 0.63%. Because plasma lysine at 16 and 20% CP levels as plasma valine at all CP levels increased linearly without the basal line, requirements of lysine and valine were not clear within the range of these CP levels.
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  • Yuichi Hidaka, Kenichi Ishikawa, Mifumi Goto, Syusaku Shinohara, Tomoh ...
    2008 Volume 11 Issue 2 Pages 67-72
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
    In this study, plasma vitamin C (VC) concentration was measured in dogs of breeds predisposed to intervertebral disk disease (IDD) and mitral insufficiency (MI), likely caused by endocardiosis. These dogs were divided into healthy-, IDD- and MI-groups. Samples of five healthy large-breed dogs were treated as control. The mean values of healthy-, IDD- and MI- groups were 3.9±1.9μg/ml (n=13),3.0±0.6μg/ml (n=6) and 3.8±1.8μg/ml (n=6), respectively. In large-breed dogs, the average was 2.3±0.9μg/ml. There was no significant difference among the values of these groups. Plasma VC levels decreased with age in healthy-(R=-0.42) and IDD-groups (R=-0.97). In dogs of healthy-group, VC concentrations were significantly higher in dogs less than one year of age than dogs 1.5 years of age and older (P<0.05).
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  • M. Kaneko, J. Ishihara, Y. Asami, M. Funaba
    2008 Volume 11 Issue 2 Pages 73-77
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
    The relationship between dietary base excess (BE), which is calculated from dietary content of Ca, Mg, Na, K, P, Cl, methionine and cystine (cysteine), and urine pH was examined in adult dogs. A total of seven dry foods, i. e., four experimental foods that are different in dietary BE, and three commercial foods, was fed to four clinically normal dogs, and urine pH was measured. There are four estimates of dietary BE; inclusion or removal of dietary content of cystine (cysteine), and coefficient of dietary content of P (2 or 1.8) in calculation of dietary BE. Urine pH highly and positively related to dietary BE, irrespective of estimated of dietary BE. When the regression equation between urine pH (y) and dietary BE (x) in this study was compared with that in previous study using cats, the y-intercept was higher in the regression equation in cats.. The present study indicates that similar to cats, urine pH can be estimated from dietary BE also in adult dogs,, and suggests that relationship between dietary BE and acid-base balance in dogs is different from that in cats.
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  • [in Japanese]
    2008 Volume 11 Issue 2 Pages 78-81
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
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  • Yasuhiro Asami
    2008 Volume 11 Issue 2 Pages 82-87
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
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  • [in Japanese]
    2008 Volume 11 Issue 2 Pages 88-92
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
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  • 2008 Volume 11 Issue 2 Pages 93-95
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
  • 2008 Volume 11 Issue 2 Pages 96-100
    Published: October 10, 2008
    Released on J-STAGE: September 24, 2012
    JOURNAL FREE ACCESS
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