Early consumption of starter feed promotes rumen development in lambs. We examined rumen development in lambs fed starter feed for 5 weeks using histological and biochemical analyses and by performing high-throughput sequencing in rumen tissues. Additionally, rumen contents of starter feed-fed lambs were compared to those of breast milk-fed controls. Our physiological and biochemical findings r...

Morphological changes associated with rumino-reticular development was compared in two groups of SA Mutton Merino lambs (n = 12) fed different diets at 3-5 weeks, 17-19 weeks and 31-33 weeks of age. Diet groups were identified as MMH or MHH according to the sequence at which the full-milk replacement (M) or hay (H) diet were fed to the lambs over the three study phases (phases I, II and III) pr...

This study was conducted in two separate experiments. Four rumen-cannulated sheep were allocated in the first experiment to evaluate date by-product (DBP) and date seed (DS) nutrients degradation in rumen. In experiment two eighteen fattening lambs were allocated in three different treatments (6 animals/treatment) to evaluate DBP effects on animal performance and nutrients’ digestibility. Three...

protein and energy are the two major components of feed that influence performance of the growing and fattening lambs. provision of the quality of protein in the lamb’s diet does not only improve the animal performance but also ensures profitable animal production. different vegetable protein sources are used to formulate the rations for growing and fattening lambs. these protein sources differ...

two experiments were conducted to evaluate the different levels of selenium supplements on performance, blood metabolites and nutrient digestibility in mehraban male lambs. the first experiment consisted of 18 lambs, 4-5 months of age and 35.9±2.7 kg average in weight randomly allotted to 3 treatments. treatments were: 1) control diet (a diet without selenium, containing 0.06 ppm of selenium), ...

This study was conducted to evaluate the possibility of alfalfa replacement with fenugreek hay for ruminants, using in vitro gas production parameters and some of rumen fermentation characteristics. For this propose, five different total mixed rations were formulated to meet nutrient requirements of 35 kg growing lambs with gradually replacement of alfalfa in control diet (T1) with different le...

A total of 24 three-month-old lambs with an average weight 23 ± 1.5 kg were used in this study and fed a complete diet supplemented natural zeolite at 1% 2% feed to evaluate the effect on calcium (Ca), phosphorus (P), magnesium (Mg) concentration tissues (kidney, liver, muscle), rumen fluid, blood. Adding resulted increase (p < 0.05) body but depressed conversion ratio. Phosphorus digestibil...

castration of male animal's leads to a reduction in aggressive behavior, which animals will avoid wasting energy resulting to economic production of the animal, grows. it also reduces damage and bruising animals and increases normed meat producing at slaughter. in this study, 20 lambs ghezel breed in four age groups, group 1: one month (n = 4), group 2: two months (n = 4) group 3: three months ...

This study aimed to evaluate the dry matter digestibility, intake and metabolic profile of ewe lambs fed active or inactive yeasts in diet containing fibrolytic enzyme. Twenty crossbred animals with an average weight 33.4kg age six months were distributed a completely randomized design. The treatments consisted yeasts: Control (no yeast), Milk Sacc X® (active Active Flora® yeast + yeast) Rumen ...