Diet selection in growing pigs

Diet selection priorities in growing pigs offered a choice of feeds

Two experiments were conducted to test whether young pigs are capable of discriminating against a feed based on its nutrient balance (or protein value) and/or the presence or absence of anti-nutritional factors, and whether there is an order of preference. In each experiment 48 Large White x Landrace female pigs weighing 16.5±1.50 kg were randomly allocated to one of either 12 dietary treatment...

Phosphorus Requirements in the Ration of Growing Pigs Phosphorus Requirements in the Ration of Growing Pigs

The replacement of protein concentrates by synthetic lysine in the diet of growing pigs.

I . Pigs from 20 to 60 kg live weight were fed on cereal diets, supplemented only with vitamins and minerals, with and without supplementary lysine. 2. Growth rate, feed:gain ratio and carcass quality of pigs given a high-barley diet (75 barley meal, 23 % wheat offal) were inferior to those of pigs given a high-wheat offal diet (75 :h wheat offal, 23 yo barley meal). 3. On both diets, but parti...

Limiting amino acids in an 11% crude protein corn-soybean meal diet for growing pigs.

Three experiments were conducted to test the hypothesis that methionine, isoleucine, valine or nitrogen either singly or in combination are limiting in an 11% crude protein, lysine-tryptophan-threonine-supplemented, corn-soybean meal diet for growing pigs. A 16% crude protein diet was used as a positive control in each experiment and all amino acid additions were made, at a minimum, to equal re...

Utilization of dried microbial cells grown on methanol in a semi-purified diet for growing pigs.

1. Twenty-four pigs (mean body-weight 44 kg) were used to determine the digestibilities of energy, nitrogen and amino acids in dried microbial cells (DMC) grown on methanol and in white fish meal (WFM). N utilization and the excretion of various nitrogenous compounds were also studied. 2. Semi-purified diets containing DMC, WFM or no protein source were offered at the rate of 1 kg fresh food/d....