Many equine nutrient requirements are based on certain assumptions about how well horses digest and absorb nutrients. Unfortunately, a great many questions remain unanswered about nutrient digestibility in horses. How well do horses utilize different sources of nutrients? What nutrients interact with one another to affect digestibility? Over the past five years, Kentucky Equine Research has con...

The techniques of post-valve ‘‘T’’ caecal cannulation (PVTC) and ileo-rectal anastomosis (IRA) and the indigestible markers Cr O and TiO for determination of ileal digestibility of nutrients were studied in this experiment. The results 2 3 2 showed that the marker Cr O gave consistently lower ileal recovery and ileal apparent digestibility of nutrients. The 2 3 average value of ileal recovery o...

Two experiments were conducted to evaluate effects of coated compound proteases (CC protease) on apparent total tract digestibility (ATTD) of nitrogen (N) and energy, and apparent ileal digestibility (AID) of amino acids (AA) and nutrients in diets for pigs. In Exp. 1, 12 crossbred barrows (initial body weight: 20.14±1.71 kg) were housed in individual metabolism crates and allotted into 2 treat...

The impact of dietary fiber on fecal digestion is well-known and provides a comprehensive approach toward nutrient digestibility and availability. Little quantitative information is available on digestion of fiber in the different segments of the gastrointestinal tract (GIT). The objectives of this study were to obtain a method allowing the quantification of the digestive process in different s...

A study was conducted to determine voluntary nutrient intake, its digestibility and optimum fiber requirements in dry Nili Ravi buffaloes kept at Buffalo Research Institute (BRI), Pattoki district Kasur Punjab province Pakistan for a period of 60 days. The buffaloes (n=25) were selected from amongst the existing herd and randomly divided into five groups. These animals were fed isonitrogenous a...

Two experiments were conducted to study the effect of rapeseed cake and xylanase application on the digestibility and deposition of nutrients and energy in young broiler chickens. Experiment 1 was carried out on broiler chickens between the ages of 1 to 21 days, which were divided into three groups. The control diet contained soybean meal, whereas in the experimental diets a part of the soybean...

Knowledge about metabolisable energy (ME) intake is crucial for various experimental settings in rodent studies. ME considers faecal and renal energy losses. In particular, faecal energy excretion can vary considerably between differentially composed diets. Thus determination of faecal energy losses, i.e. apparent energy digestibility, is the most important experimental approach to determine ME...

Most of amino acid (AA) digestibility values for feed ingredients are obtained using pigs cannulated in the distal ileum. The ileal-cannulated pig model uses pigs older than six weeks due to difficulties related to implanting the T-cannula in distal ileum of younger pigs and complications during the post-surgical recovery. However, to properly formulate the diet of weaned pigs, the nutritive va...