Feeding value of spring and winter barley grain
1998
Vaculova, K. (Zemedelsky Vyzkumny Ustav, Kromeriz (Czech Republic)) | Heger, J.
A set of 158 spring and winter varieties and new lines of barley was grown under field conditions and tested for their suitability for feeding purposes in biological growth and balance experiments in vivo using laboratory rats. Barley cultivars and lines were divided into groups considering their growth habit type (spring and winter), ear type (two-row and multirow) and grain type (hull-less and covered). The groups were tested and compared for biological parameters (weight gain of laboratory animals, feed utilization in g/g of weight gain, protein efficiency ratio, coefficient of true protein digestibility, protein biological value, net protein utilization, usable protein content, coefficient of energy digestibility, digestible energy content, gross energy content), content of nutrients and antinutritional components in grain (starch, protein, lysine, fat, beta-glucans, fiber - all parameters in g/kg, lysine in protein - in g/16 g N) and grain weight. Interseasonal variability in biological parameters of grain feeding quality was mostly low, that in nutrients (except for starch) was medium to higher. The most variable parameter was fiber content within years as well as in individual barley groups.
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