The question is posed of the applicability to cattle feeding, of digestibility data obtained with sheep. An experiment is described where the same high concentrate diet was fed at three levels, equalised per kg body mass between species. In energy…
The digestibility of organic matter (DOM) of material selected by cattle, Boer goats, Dorper and Merino sheep on natural Karoo pasture was investigated. A highly significant difference (P ≤ 0,01) in DOM selected between years, with an interclass (animal types)…
Nutrition research with grazing ruminants. Native pasture is still the main source of feed supply for the sheep and beef cattle industries. Apparently an inadequate intake of digestible nutrients puts a limitation on animal production. Due to the seasonal pattern…
The possibility of substituting maize for sorghum grain in fattening diets was studied in a digestibility trial with wethers and a growth study with steers. ln die digestibility trial a 6 x 6 Latin square design was used with maize,…
Rice-straw was ensiled with a 5-6% urea solution for 3 weeks before being fed. Cattle fed with urea-ensiled rice straw alone can maintain weight. However, to obtain a daily weight gain of 300-450 g in Holstein Friesian heifers (8-12 months…
The digestive capabilities of the Cape porcupine (Hystrix africaeaustralis) were studied using captive and field animals. The stomach contents comprised 6,47% of the body mass and had a low pH (2,0).The Cape porcupine also has a long small intestine (670…
Factors influencing food plant selection by the blesbok (Damaliscus dorcas) were studied in an area with simple plant composition. Dicanthium pyllosum leaves were specifically selected by the blesbok. Cuticle analysis gave a ratio of 1 Dicanthium to 1,85 of all…
Groundnut and bean haulms were evaluated as feeds for indigenous Malawian goats. Generally, the results showed that the nutrients in the bean haulms were better digested and utilized by the goats than those in the groundnut haulms. However, provided that…
Supplementation of low quality Mongolian hay and barley straw with urea, minerals and a small quantity (11 - 14% of total DM) of easily digestible carbohydrate had a positive influence on in vivo digestibility, increasing the net energy value of…
The effect of alkali-treated bagacillo in diets varying in proportion of bagacillo and molasses was studied in lambs. The bagacillo was treated with a concentrated solution of NaOH in a horizontal drum-type mixer to give a final concentration of 6%…
A balance study was carried out to investigate digestibility and retention of major nutrients in wethers fed rations in which condensed beet molasses solubles (CBS) formed 27% of the dietary DM. Results showed that CBS contained 8,3 MJ of ME…
Treatment of oat grain by anhydrous ammonia at levels of approximately 0,75; 1,5 and 3,0% was investigated. Diets consisting of untreated oat grain and oat grain ammoniated for 24 hours at 90°C in an AN-STRA-VERTER® -oven at the respective treatment…
Utilization of apple residue in diets for lambs and milking cows The effect of replacing 0%, 33%, 66% and 100% of the maize meal with apple residue in a growth diet containing 45% roughage for lambs was investigated…
A series of 12 in vivo digestibility trials, using two-tooth Merino wethers were conducted on freshly-cut green kikuyu herbage. Samples of this herbage were analysed by proximate and acid-detergent analysis. A close relationship was found between crude fibre (CF) and…
Milled (13 mm screen) maize residue containing 35% moisture was treated with 4% anhydrous ammonia on roughage dry matter in a stack for 50 days. Performance of lambs was measured in a 2 x 5 factorial experiment with two treatments…
Two experiments were conducted to evaluate L. albus cv. Buttercup as an alternative to heated full-fat soya bean meal for early weaned piglets. In Experiment 1, the performance of piglets, fed diets with 0%, 4%,8% and 12% lupins and formulated…
The effect of replacing O. 33, 66 and 100% of the maize meal with apple residue in a concentrate diet (containing 89% concentrate and 11% roughage) for dairy calves was investigated. Four groups of 10 new-born Friesian bull calves were…
Four rumen-cannulated steers were fed a diet consisting of whole maize grain, high protein concentrate and molasses. Two of the four animals received 10% ground Eragrostis curvula hay in addition to the whole maize grain diet. The feeding period was…
The utilization of urea-supplemented and ammoniated barley straw in sheep. Barley straw treated with urea (75 kg/ton straw) and with anhydrous ammonia (30 kg/ton straw) by the stack and oven methods were compared with urea-supplemented barley straw in an intake…
This experiment was conducted to determine apparent and true amino acid digestibilities of untreated (BPS), heat-treated (HBPS) and thermal-ammoniated (NH3BPS) high-tannin sorghum with pigs both intact and with an ileo-rectal anastomosis (IRA). The mean endogenous protein secretion for the surgically…
