This study was conducted in two experiments to evaluate the dietary physical form on dry matter intake (DMI), performance, carcass traits and nutrient digestibility from Kalkuhy (an Iranian fat–tailed breed) male lambs. Initial lamb body weight (BW) average was, 32 .81 ± 2 kg, and 110 ± 10 days of age. Three treatments (diet physical form) included T1: total mixture diet (TMR) mixed diet (MD), ...

This study estimated heritabilities of daily observations on milk yield, milking speed, dry matter intake and live weight as well as genetic correlations among them over time using the random regression methodology. Data were from dairy cattle stationed in an experimental research farm over the past 10 years. All traits were recorded daily using automated machines. Estimated heritabilities were...

a study was carried out to evaluate nutrient intake and digestibility by west african dwarf (wad) sheep fed graded levels of dietary pigeon pea seed meal (psm). four diets designated a, b, c and d were formulated to contain 0, 10, 20, and 30% levels of psm, respectively. four wad rams aged between 15 and 17 months and weighing between 16 and 19 kg were used to conduct digestibility study in a 4...

a number of 36 holstein young bulls (initial bw of 345±61 kg) were randomly assigned to 6 dietary treatments, following a 3 × 2 factorial arrangement, with three concentrate levels of fish oil (0, 1.5 and 3 % of dm) and 2 levels of alfalfa hay versus corn silage (10 and 20 % of alfalfa hay forage versus 20 and 10 % of corn silage) were used to investigate the effect of fish oil supplementation ...

Abrupt and gradual dry-off strategies by reducing feeding level (normal vs. reduced energy density), milking frequency (twice once daily), administration of a dopamine agonist after last (i.m. saline cabergoline injection) were investigated (2 × 2 factorial arrangement) for their effects on feed intake, milk yield, balance, leakage, clinical udder characteristics in 119 Holstein cows. In the we...

Four Holstein steers (208 kg) with "T" cannulas in the rumen and proximal duodenum were used in a 4 x 4 Latin square design experiment to evaluate the interaction of feed intake level on comparative ruminal and total tract digestion of dry-rolled and steam-flaked corn. The basal diet contained (DM basis) 6% alfalfa hay, 6% sudangrass hay, 75% corn, 2% yellow grease, 5% cottonseed meal, 3% cane ...

Objectives of this experiment were to: 1) determine appropriate test length, timing, and repeatability of DMI, ADG, and efficiency over different biological time points; 2) determine the efficacy of using decoupled performance and intake data to generate accurate feed efficiency measures; and 3) determine the relationship between forage-and grain-feed efficiency measures. Over 2 yr, Charolais c...

four west african dwarf (wad) grower bucks averaging 6 kg in weight and aged between 5-6 months of age were used in a digestive trial to determine the intake and digestibility of raw or processed pigeon pea seed meal based diets. the diets designated rpbd, spbd, tpbd and bpbd were formulated from cassava peel, palm kernel cake, brewers dry grain, bone meal and common salt to contain 15% of raw,...

INTRODUCTION The peripartum period is very challenging to the dairy cow because of hormonal, metabolic and managerial changes. Dry matter intake, amount and daily variability, during the transition period is probably the most important factor affecting the health and performance of dairy cows (Grummer et al., 2004). Metritic cows have reduced prepartum feed intake, which is likely a predisposin...

the objective of this study was to evaluate the effects of weaning age on dry matter intake (dmi), average daily gain (adg), feed efficiency (fe), feed cost (fc) and benefit index (bi) of holstein calves reared under organic farming system. thirty two holstein calves were divided into two treatments: early weaning (ew) vs. late weaning (lw). calves in the both groups were provided with whole mi...