Evaluation of Nutritional Condition on the Basis of Milk Urea Nitrogen and Milk Protein Concentrations in Dairy Cows

Ikuta, Kentaro; Kokamo, M.; Sasakura, Kazumi; Hakogi, Etsuji

doi:10.12935/jvma1951.53.289

Cited by 3 publications

(2 citation statements)

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“…Positive beliefs scores also correlated positively with milk urea nitrogen, which is used as an indicator of the balance between energy and protein in feed. A proper milk urea nitrogen concentration range is approximately 10-18 mg/dL (Ikuta et al 2000); however, in the current study the average milk urea nitrogen among the respondents was relatively lower (9.25 ± 1.72 mg/dL). A positive correlation between the positive beliefs score and milk urea nitrogen would suggest that farmers with lower positive beliefs scores fed their cows feed with protein content that was relatively lower than its energy content.…”

Section: Relationship Between Farmer's Attitude and Dairy Productivitcontrasting

confidence: 79%

Relationship between the stockperson's attitudes and dairy productivity in Japan

Fukasawa

Kawahata

Higashiyama

et al. 2016

Animal Science Journal

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The aim of this study is to identify the factors that comprise farmer attitudes toward dairy cows and jobs in Japan, and examine the relationship between these attitudes and dairy productivity. At first, we executed a questionnaire survey to determine factors that comprise attitudes of farmers toward their jobs and dairy cows, and three factors were extracted. These were named as 'Positive beliefs to cows', 'Negative beliefs to cows' and 'Job satisfaction', respectively. Second, we examined the relationships between attitude and dairy productivity in 35 dairy farms. The positive beliefs scores correlated positively both with milk yield and milk urea nitrogen concentration. We found there to be three farm groups by cluster analysis using three attitude score. The group B farms showed significantly higher positive beliefs scores and job satisfaction scores; on the other hand, the group C farms showed significantly lower positive beliefs scores and higher negative belief scores. The milk yield in group B was significantly higher than that in group C. This study showed that Japanese farmers' attitudes toward cows considerably resemble those seen in previous studies in Western cultures. Positive attitudes toward cows could enhance stockmanship, and could improving animal welfare and productivity.

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Section: Relationship Between Farmer's Attitude and Dairy Productivitcontrasting

confidence: 79%

Relationship between the stockperson's attitudes and dairy productivity in Japan

Fukasawa

Kawahata

Higashiyama

et al. 2016

Animal Science Journal

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“…In dairy cattle, the nutritional status is usually monitored using the lactating quantity and quality as a criterion because the genetic diversity of cows is relatively large and the lactating periods are not the same among individual cows (DePeters and Cant, 1992;Ikuta et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Methionine or Arginine Levels on the Urinary Creatinine Excretion in Broiler Chicks

2017

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Two experiments were conducted to evaluate the usefulness of urinary creatinine levels as a criterion for the estimation of protein and amino acid requirements in poultry. Here we studied the effects of dietary precursor levels of creatinine, methionine and arginine, on urinary creatinine excretion in experiments. Both experiments used 15 Chunky broilers chicks that were 8 days old. The chicks were assigned to three dietary groups, with five chicks each, and were fed an experimental diet for 7 days. The experimental diets mainly consisted of corn and soybean meal, and contained deficient, adequate, or excessive methionine and arginine levels in experiments 1 and 2, respectively. Excreta were collected for the last 3 days of the feeding trial, and chicks were terminated by dislocation of the neck at the end of the feeding trial to collect their livers. Creatinine concentration in the excreta and hepatic L-arginineglycine amidinotransferase (AGAT) activities were determined.Urinary creatinine levels increased with increasing both dietary methionine and arginine levels from deficient to adequate recommended by Japanese feeding standard (P＜0.05), and then remained constant in experiments 1 and 2, respectively. The hepatic AGAT activity decreased when both dietary creatinine precursors levels were increased from deficient to adequate levels (p＜0.05), and then remained constant.These results suggested that creatinine excretion was changed with both increasing dietary methionine and arginine, dose-dependently.

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Effects of Prepartum Zeolite A Administration on Blood Calcium Levels in Postpartum Dairy Cows

Kanazawa

Kimura

Fujiwara³

et al. 2021

J.Jpn.Vet.Med.Assoc.

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Evaluation of Nutritional Condition on the Basis of Milk Urea Nitrogen and Milk Protein Concentrations in Dairy Cows

Cited by 3 publications

References 0 publications

Relationship between the stockperson's attitudes and dairy productivity in Japan

Relationship between the stockperson's attitudes and dairy productivity in Japan

Effects of Dietary Methionine or Arginine Levels on the Urinary Creatinine Excretion in Broiler Chicks

Effects of Prepartum Zeolite A Administration on Blood Calcium Levels in Postpartum Dairy Cows

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