Phosphorus in swine. IV. Influence of dietary calcium and phosphorus and protein levels on feedlot performance serum minerals, bone development and soundness scores in boars.

Phosphorus in swine. II. Influence of dietary calcium and phosphorus levels and growth rate on serum minerals, soundness scores and bone development in barrows, gilts and boars.

The influence of dietary Ca and P and growth rate from birth to 60 to 70 days of age on serum minerals, soundness scores and bone development was evaluated with crossbred gilts and barrows or boars. The following dietary treatments, as percentages of NRC recommendations for barrows and gilts, were used: (1) 100% Ca and P, (2) 125% Ca and P, (3) 100% Ca and 125% P and (4) 100% Ca and 75% P. Pigs...

Phosphorus in swine. V. Interrelationships of various feedlot performance, serum minerals, structural soundness and bone parameters in barrows, boars and gilts.

Daily gain, daily feed intake, feed per unit of gain, serum Ca, serum P, serum Mg, structural soundness scores, foot pad scores, metacarpal breaking force and metacarpal ash values from five Ca P trials with barrows, gilts or boars were subjected by sex in each trial to multivariate analysis of variance. Correlation coefficients were obtained from the residual sums of squares and sum of product...

Effect of dietary available phosphorus and phytase on production performance of old laying hens and tibia bone quality

Background: Old laying hens are more prone to dietary calcium (Ca) and phosphorus (P) deficiencies as  they absorb Ca and P less efficiently than younger hens. OBJECTIVES: In a 2×2 factorial design, the influence of diets with two levels of available phosphorus (AP) and phytase enzyme on the laying performance, egg quality and tibia bone characteristics of laying hens at their late 2nd producti...

Influence of calcium and non-phytate phosphorus deficient diets with phytase on the performance of broilers, serum concentrations of minerals and the activity of alanin transaminase, aspartate transaminase and lactate dehydrogenas e

Effects of Calcium, Phosphorus and Zinc in Wheat-Based Diets on Broiler Chickens’ Performance, Immunity and Bone Parameters

An experiment was conducted to investigate the effect of zinc (Zn) supplementation and different concentrations of calcium (Ca) and phosphorus (P) in wheat-based diets on the performance, immune responses and bone parameters of broiler chickens. A randomized complete block design with factorial arrangement was used (three concentrations of Zn supplementation×two concentrations of dietary Ca-P),...