Laboratory of Chemistry and Nutrition Physiology

Laboratory of, Romania

Laboratory of Chemistry and Nutrition Physiology

Laboratory of, Romania
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Olteanu M.,National Research Development Institute for Animal Biology and Nutrition Balotesti | Olteanu M.,Laboratory of Chemistry and Nutrition Physiology | Panaite T.,National Research Development Institute for Animal Biology and Nutrition Balotesti | Panaite T.,Laboratory of Chemistry and Nutrition Physiology | And 4 more authors.
Indian Journal of Animal Sciences | Year: 2012

The purpose of this study was to investigate the effect of the dietary mulberry leaves on nutrient digestibility and layer performances. The experiment was conducted for 30 days on 105 Lohman Brown layers assigned to 3 groups (C, E1 and E2) with 35 layers/group. The experimental diets included 3% (E1) and 6% (E2) mulberry leaves. The layers had free access to the food. The feed intake, egg production, feed conversion ratio, egg mass production and egg weight were recorded; no significant difference was noticed between the 3 groups. Digestibility studies were performed on weeks 2 and 3 (5 days/week). Organic matter digestibility was significantly higher in the control group compared to the experimental groups: E1 and E2. Nitrogen free extractives significantly differed in groups too. The physical parameters of the eggs (egg weight, egg white weight, egg shell thickness, Haugh unit, egg yolk weight and egg shell weight) did not differ significantly between the groups. Yolk colour intensity was significantly higher in the experimental groups E1 and E2 compared to the control group. Use of mulberry leaves in laying hens nutrition by including into ratio up to 6% had no negative effects on breeding performances and egg quality.


Georgeta C.,Laboratory of Animal Nutrition | Anca G.,Laboratory of Animal Nutrition | Eliza M.D.,Laboratory of Animal Biology | Elena U.A.,Laboratory of Chemistry and Nutrition Physiology
Indian Journal of Animal Sciences | Year: 2014

One-day-old Cobb 500 broiler chicks (1200) were allocated to 3 experimental treatments, each one had 4 replicates. The treatments differed only by the source of Ca and Mg supplemented as follows: control group contained limestone (as Ca source: 10.0/9.6/9.0 g/kg, for each growth phases) and MgO (as Mg source: 2.36/2.39/ 2.38 g/kg, for each growth phases); AD1 and AD2 groups - limestone and MgO were replaced with AD as Ca and Mg source. The AD1 diet contains the same levels of Ca as control and Mg levels were 5.8/5.6/5.45 g/kg. The AD2 diet contained reduced levels of Ca (7.5/7.3/6.8 g/kg) and Mg levels were 4.3/4.21/4.12 g/kg, for each of the growth phases. The plasma biochemistry was not influenced by treatments, except Mg concentration which was increased in the experimental groups. Tibia ash, bone Ca and P content were not different in any of the treatment groups. Bone Mg content was increased in the AD groups compared with control. AD can improve weight gain and presented similar plasma metabolic profile, tibia ash and bone Ca and P content with limestone adding MgO.


Margareta O.,National Research Development Institute for Animal Biology and Nutrition Balotesti | Diana C.R.,National Research Development Institute for Animal Biology and Nutrition Balotesti | Maria C.G.,National Research Development Institute for Animal Biology and Nutrition Balotesti | Maria C.G.,Laboratory of Chemistry and Nutrition Physiology | And 4 more authors.
Indian Journal of Animal Sciences | Year: 2015

The purpose of this study was to investigate the effect of the dietary mulberry leaves given to broiler chicken on their performance and on the quality of the breast meat. The experiment was conducted for 4 weeks, on 114 broilers, aged 21 days. The broilers were assigned to 3 groups (C, E1 and E2) with 38 animals per group. The diets for groups E1 and E2 also included mulberry leaves 2 and 5%, respectively. The birds had free access to the feed and water. The average daily feed intake (g/day/broiler), average daily weight gain (g/day/broiler), final weight (g) and feed conversion ratio (g feed/g gain) were not significantly different among the 3 groups. The fatty acid content of the breast muscle had the following evolution: the concentration of saturated fatty acids decreased, while the concentration of polyunsaturated fatty acids increased by 14.53% in groups E1 and 25.58% in E2 compared to the control group, the difference between groups E2 and C being significant. The cholesterol concentration decreased in the experimental groups, the difference between groups E2 and C also being significant. The inclusion of up to 5% mulberry leaves in broiler diets did not have adverse effects on broiler performance, while it increased the quality of the breast muscle by decreasing the concentration of saturated fatty acids, omega 6 (n-6) to omega 3 (n-3) ratio, and also the concentration of cholesterol. © 2015 Indian Journal of Animal Sciences.

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