Selected blood biochemical indicators of Cherry Valley ducks undergoing fattening in relation to their diet and sex

Abstract

The aim of the present study was to assess dietary and sex-related effects on selected blood indicators of 40-day-old mallard ducks undergoing fattening. The ducks were divided into three dietary groups (control, L50 and L100). The control (C) group was fed a diet containing soybean meal as the main protein component of the feed. In both experimental groups L50 and L100 soybean meal was replaced with meal of whole seeds of white lupine, Zulika variety, in proportions of 50 and 100%, respectively. With respect to the assessed dietary effect, the serum of the L50 group showed a significantly higher albumin concentration as compared to the C group (P < 0.05) accompanied by a significantly lower proportion of γ-globulins in the L50 group as compared to the L100 group (P < 0.01). As for the blood plasma, the C group showed a significantly higher concentration of total cholesterol as compared to the L100 group (P < 0.05) and a highly significant increase in the triacylglyceride (TAG) level as compared to the L50 and L100 groups (P < 0.01). Concerning plasma mineral indicators, ducks of the C group showed a significantly higher calcium concentration (P < 0.05) in comparison to the L100 group and a lower phosphorus concentration (P < 0.01) in comparison to the L50 as well as L100 group. Further, the C group showed a significantly lower level of potassium (K) as compared to the L50 group (P < 0.05) as well as the L100 group (P < 0.01). The sex of the ducks significantly (P < 0.05) affected the proportion of α-globulins in serum and the magnesium level in the plasma and affected the plasma levels of TAG and K and the activity of aspartate aminotransferase (P < 0.01).

Beneficial effects of substituting soybean meal for white lupin (Lupinus albus, cv. Zulika) meal on the biochemical blood parameters of laying hens

“…The positive effect of lupin protein on production and health was not apparent only in hens and chickens. Similar findings were reported by Jerabek et al (2018), who confirmed the effect of feeding diet containing lupin on lower levels of cholesterol and triacylglyceride values in the blood plasma of fattened ducks. Feeding diet with lupin to turkeys, positively reflected the development and function of their gastrointestinal tract and also the absorption of nutrients from the feed which is closely linked with better production parameters (Zdunczyk et al 2016).…”

“…The lupin meal in the diet did not affect the alanine aminotransferase (AST) activity in the blood plasma of the experimental groups which is positive because higher values of AST are sign of hepatic disorders. Even though, the mean AST values in the plasma of the hens were higher than values in the study of Jerabek et al (2018). This slight increase cannot be considered as harmful for the health of the layers because the values were still in physiological range and the difference may also have reason in variation of biochemical parameters between hens and ducks.…”

Effect of Dietary Protein Sources Substituting Soybean Meal on Growth Performance and Meat Quality in Ducks

“…Legume seeds are a valuable protein-rich feed material, and they reportedly have a positive effect on performance parameters [30,31]. In the present study, the body weights of the ducks were higher than those in feeding trials by Jerabek et al [32], who investigated the effects of a duck diet containing SBM and yellow lupin at levels of 50% and 100% of the feed ration. Olver [33,34] reported lower performance parameters in ducks fed a diet based on bitter lupin, which may be attributed to the negative effect of alkaloids.…”

Meat quality traits and fatty acid composition of breast muscles from ducks fed with yellow lupin

“…Olver (1997) as well as Olver and Jonker (1998) concluded that 20% to 40% inclusion of lupin reduced the content of fat in 6-week-old ducks. In a study by Jerabek et al (2018), ducks fed a diet with 50% and 100% inclusion of YL as a replacement of SBM had lower BW compared to birds fed SBM. Our study did not reveal a significant effect of dietary lupin on BW and other carcass traits of birds.…”