ABSTRACT
The study was conducted to examine the effect of heat treatment of green tea waste (GTW) on rumen degradability, apparent digestibility, and plasma metabolites in Black Bengal goat based on in vitro and in vivo studies. The in vitro incubation was performed with autoclaved, oven, and freeze-dried GTW, whereas animal study was conducted using 12 Black-Bengal goats in a 3 × 3 Latin-square design. Goats were fed a total-mixed-ration without (control) or with the partial replacement of soybean meal and barley with 50 g/kg dry matter (DM) of either oven-dried or autoclaved GTW. Heat treatments reduced ether extract and tannins concentration but increased the effective DM and crude protein (CP) degradability of GTW. The highest values of in vitro volatile fatty acid concentration, molar proportion of propionate, ammonia-nitrogen concentration, and cumulative gas production were observed for oven-dried GTW among the tested GTW. Dietary treatment did not alter the DM intake, but apparent CP digestibility and retained nitrogen (N) were increased in goats fed control or oven-dried GTW incorporated diets. Feeding autoclaved GTW diet increased the urinary and fecal N excretion in goats. In contrast, plasma glucose concentration was highest in goats fed control or oven-dried GTW diet. In conclusion, oven drying could be a practical approach to increase protein digestibility and retained N in goats.
Subject(s)
Animal Feed , Goats , Animal Feed/analysis , Animals , Digestion , Fermentation , Goats/metabolism , Hot Temperature , Kinetics , Nitrogen/metabolism , TeaABSTRACT
The parasitic Fascioliasis is a zoonotic and economically significant disease for livestock and humans, creating public health concerns around the world, including in Bangladesh. Populations of Bangladesh are more vulnerable to this parasitic infestation for their intimate interactions. To tackles the adverse effects on humans from food animals, it is exigency to know the exact prevalence and associated risk factors of zoonotic Fascioliasis among ruminants. Therefore, the aim of this systematic review and meta-analysis was to determine the authentic knowledge of potential risk factors and prevalence among livestock populations. Four globally recognized databases, including Web of Science, Scopus, PubMed, and Google Scholar, along with local databases, were used to search the related studies since 2000. A total of 38 studies were selected for the meta-analysis, and the pooled prevalence of Fascioliasis was found at 20% (95 % CI: 15-25). A subgroup analysis was also performed for: species, age, sex, study duration, and sample size. The prevalence rate was found highest in cattle and sheep at 21% (95 % CI: 15-27), female individuals at 26% (95 % CI: 16-35), aged animals at 26% (95 % CI: 15-36), and rainy season at 25% (95 % CI: 16-34). This is the first systematic review and meta-analysis in Bangladesh that offers a comprehensive picture of the prevalence of Fascioliasis in ruminants and possible risk factors. Thus, this study will assist the government, policymakers, and veterinarians in implementing effective control measures by providing more detailed information about outbreak patterns.
ABSTRACT
Soluble protein extracted from leaves and stems of grasses and forage legumes is defined as green protein. The present study was conducted to evaluate in situ green protein degradability, intestinal protein disappearance, and in vitro fatty acids biohydrogenation (BH) in dairy cows. Three green protein concentrates (red clover, ryegrass, and grass clover) were heat treated as follows: oven-drying at 70 °C, subsequent autoclaving at 121 °C for 45 min, and for grass clover also spin flash-drying. Freeze-dried green protein was considered as a control (untreated). Autoclaving and oven-drying of green protein reduced the crude protein and dry matter degradability. The linolenic acid BH rate was lowest in heat-treated grass clover concentrate ( P < 0.01). In conclusion, green proteins are heat sensitive, and oven-drying can be an appropriate method to increase the amount of protein and unsaturated fatty acids escaping from the rumen.
