Reducing dietary protein content in fish feeds will reduce cost of production if growth performance can be maintained. In this study, we assessed the effects of reduced dietary protein content from 33.5% to 27.4% with ideal amino acids profile on the growth, immune parameters, intestinal microvilli length and total ammonia nitrogen discharge of tilapia. After 8 weeks of feeding, growth performa...

Efficiency in animal protein production can be defined in different ways, for example the amount of human-digestible essential amino acids (HDEAA) in the feed ration relative to the amount of HDEAA in the animal products. Cattle production systems are characterised by great diversity and a wide variety of feeds and feed ration compositions, due to ruminants' ability to digest fibrous materials ...

Livestock, particularly ruminants, can eat a wider range of biomass than humans. In the drive for greater efficiency, intensive systems of livestock production have evolved to compete with humans for high-energy crops such as cereals. Feeds consumed by livestock were analysed in terms of the quantities used and efficiency of conversion of grassland, human-edible ('edible') crops and crop by-pro...

This study was conducted to determine in vitro crude protein degradation (IVDP) parameters and effective crude protein degradability (EPD) of various feeds using the modified in vitro gas production (GP) technique. Feed samples were alfalfa hay, soybean meal, soybean, rapeseed meal, sunflower meal and fish meal. Rumen fluid was collected before the morning feeding from four rumen fistulated lam...

The objective of this study was to estimate the protein degradability parameters of 6 common ruminant feedstuff using the nylon bags (in situ) and the innovative in vitro method-the DaisyII incubator. Significant differences were observed between the in situ and in vitro methods in estimation of the rapidly soluble (a) fraction (Pin vitro method were highly correlated with the estimated values ...

The feed preference of two species wild mice, the house mouse (Mus musculus), and mound-building spicilegus) was investigated (kept in our laboratory for 25 generations). Our interest focused on (i.e. if mice choose type closest to their natural food). proximate composition granulated feeds offered differed minimally; crude fat fibre content mixture higher, only this contained insect protein. B...

The use of non-conventional animal protein (NCAP) sources as alternative feed resources for poultry production has been a topic interest in recent years. NCAP sources, such insects, have the potential to significantly reduce costs, which account 80% total costs. Insects, particular, offer protein-rich options with excellent amino acid profiles, resulting remarkable taste and market value. Howev...

The gut microbiome of animals varies by species, age, sex, and nutrition. content nutrients in the diet as well feed additives (synbiotics, eubiotics, phytobiotics) determine quantity quality intestinal flora. ban on use antibiotic growth promoters (AGP) has led to search for various effective alternatives that affect microbiome, animal health production results. It been shown fermented feeds, ...