The aim of this study was to determine the best level of utilization of dried waste of cassava starch extraction (WCSEd) as a substitute for corn for lactating cows. Four lactating cows were fed diets with increasing levels (0%, 33%, 66% and 100%) of WCSEd as a substitute for corn. The intake and digestibility of dry matter and nutrients, milk production and composition, blood parameters of glu...

This study aimed to identify suitable predictors of nitrogen (N) use efficiency (NUE; milk N/N intake) for cows that differed in breeds and were fed with ryegrass pasture, using existing data from the scientific literature. Data 16 studies used develop models based on relationships between NUE dietary animal-based factors. a further 10 model validation. Milk urea N (MUN) water-soluble carbohydr...

We investigated how lactating cows are able to cope with a sustained water restriction. In experiment 1, body weight and meal patterns were recorded with ad libitum access to water (baseline) and during 8 days of 25 and 50% restriction of drinking water relative to ad libitum intake. In experiment 2, indirect calorimetry was combined with nitrogen and energy balance and plasma hormone and metab...

The objective of the current study was to investigate the effect of N-carbamoylglutamate (NCG) supplementation on milk production and nitrogen (N) utilization in Chinese Holstein dairy cows. Sixty multiparous cows (78±17.3 d in milk, 635±61.00kg of body weight, and 41.9±7.9kg/d milk yield; mean ± SD) were blocked by parity, days in milk, and milk yield and randomly allocated to 1 of 4 groups, e...

Energy and nitrogen balances were performed in 12 very low birthweight infants fed on either human milk or on a preterm formula. Energy and nitrogen retention were significantly higher in those given the formula feed (p less than 0.05). Highly significant correlations were found between nitrogen intake and nitrogen retention and between energy retention and nitrogen retention (p less than 0.001...

ABSTRACT The objective of this work was to compare the dry matter intake, milk yield and quality, physiological biochemical parameters in Holstein (n=10) Jersey cows under heat stress insolation, two treatments: CL - cooling by ventilation sprinkling HS insolation. Data were submitted ANOVA. There an interaction between treatment breed day effect for intake. For consumption % body weight, consu...

This aim of this study demonstrated the relationship between nutritional variables ration and fertility parameters in postpartum period dairy cattle farms. All farms, which used present study, were with problems (calving range ≥14 months artificial insemination number ≥1.8). Ration milk samples taken from selected Fertility records herd registration systems examined. In urea nitrogen (MUN) leve...