To evaluate the effects of glutamine (Gln) supplementation on sow performance during late gestation and lactation and their offspring, eighty pregnant, multiparous sows of a commercial hybrid line were used in a completely randomized, 2 × 2 experimental design at…
This study investigated the effects of incorporating different protein sources (oil seed cakes versus Leucaena leucocephala hay) in a total mixed ration (TMR) on intake, digestibility, growth and carcass meat quality of Saanen goats. Sixteen Saanen male goats were allocated…
Selection for residual feed intake (RFI) as a trait to improve production efficiency was proposed as early as 1963. A low RFI value indicates a more efficient animal and heritability estimates of between 0.28 and 0.58 have been reported for…
A mathematical model together with data analyses were adapted to describe the effect of variation in dietary energy concentration, achieved by the inclusion of different levels of sawdust, on the growing pig. It was found that the autoregression coefficient of…
Sixty Merino lambs were randomly allotted to one of six feeding levels. The feeding levels were ad libitum (control) and 0,82; 0,72; 0,65; 0,55 and 0,45 of ad libitum. The feeding levels were calculated from the average weekly feed intake…
Twelve non-lactating Boer goat does with live masses ranging between 20 and 60 kg and of different body fatness were used to develop equations predicting body moisture, protein, ash and fat from tritiated water space. Calculated coefficients of variation, with…
A group of 82 genetically lean and 90 obese Landrace pigs was allotted to three dietary treatments with lysine concentrations of 1,22 (T1), 1,02 (T2) and 0,83% (T3), corresponding concentrations of crude protein (CP) of 19,7, 16,8 and 13,7% and…
Lucerne hay (LH) was substituted by urea-ammoniated wheat straw (AWS) in four lamb-growth diets, all containing 60% roughage. The ratio of LH to AWS was 60: 0, 40: 20, 20: 40 and 0: 60 in the respective diets, which were…
Forty-eight Dorper lambs, comprising 24 ram and 24 ewe lambs, were divided into four groups of six ram and six ewe lambs each and were allocated to one of the following feeding levels: ad libitum, 80%, 65% or 50% of…
