Poultry litter for intensive beef production

Abstract

The nutritional value of a pelleted fattening concentrate mixture, in which heat-sterilized poultry litter (PL) was included at rates of 0,15, 25 and 35%, was studied. A digestion and nitrogen balance trial was carried out with rams, and a feeding trial was carried out with intact male cattle from the age of 8 mo to slaughter at 14 mo. Digestibility of crude protein was related inversely to PL content of the diet. This decrease in digestibility was not accompanied by a decrease in the quality of the protein digested. Gross and digestible energy contents of the diets were related inversely to their PL content. There were no significant differences in blood urea concentration. A concentrate mixture containing 1 % urea but otherwise similar to the control, was included in the feeding trial. There were no significant differences in rate of live-weight or carcass gain between treatments. The differences in degree of fatness of the carcasses tended to be related inversely to PL% in the diet, but they were small and reached significance only with the extreme treatments. Feed intake on PL-containing diets was higher than on the control diet, but feed conversion efficiency was impaired when the proportion of PL exceeded 25%. No significant correlations were found between total volatile fatty acids in rumen liquor and daily live-weight gain.

Study on Effect of Poultry-Litter-Based-Silage on Serum Chemistry of Fattening Lambs

“…Non-significant changes in average daily gain and feed efficiency were also observed by partial substitution of soybean meal with poultry wastes in sheep ration by Smith (1974). Feed conversion efficiency was impaired when proportion of poultry litter exceeded in fattening concentrate mixture (Tagari et al, 1976) but this effect was not seen in the present study when poultry litter was used in silage. Flachowsky (1985) reported daily live weight gain in sheep fed poultry litter on average 13 G per daily higher than that of the control.…”

Interactions between supplementary nitrogen source and ration energy density on performance and nitrogen utilization in growing and fattening male cattle

“…An increased loss of ammonia from the rumen and a possible reduction in microbial protein synthesis for the PL and NPN treatments of the LMEC diets may be responsible, owing to a reduced presence of fermentable energy (Burroughs et al, 191 A;Hagemeister et al, 1981). This, too, could be attributed to differences in availability of fermentable energy, since approximately half of the N in PL is amino acid N (Tagari et al, 1976b). This, too, could be attributed to differences in availability of fermentable energy, since approximately half of the N in PL is amino acid N (Tagari et al, 1976b).…”

Response to partial replacement of yellow corn with potato processing waste as non-traditional source of energy on the productive performance of Ossimi lambs

“…Generally, the superiority in nitrogen retention due to a specific ration is affected by several factors such as possible production of microbial protein synthesis, increasing presence of fermentable energy (Hagemeister et al 1981), differences in availability of fermentable energy (Tagari et al 1976), variability in nitrogen that might escape fermentation from the rumen, an increased utilization of ammonia in the rumen (Holzer et al 1986), and the effect of free fats in protein synthesis (Sutton et al 1983). …”