Organic Mineral Supplementation Research Articles

Effect of the organic minerals zinc, manganese, and copper on growth performance and the locomotor system of finishing pigs

Supplementation with complexed minerals influences the growth performance and the integrity of the locomotor system of animals. The aim of this study was to determine the effect of a complex supplementation of organic minerals (metal-amino acids) consisting of Zn (50 ppm), Mn (20 ppm), and Cu (10 ppm) (Availa® Sow FF Zinpro Corp.) on the growth performance and integrity of the locomotor system in pigs. One hundred and eighty 61-day-old animals, comprised of females (n=90) and castrated males (n=90), were used in a randomised block factorial design with ten replicates per treatment and sex. The experimental design consisted of two treatments: control (T1) animals without supplementation and treatment (T2) animals that were supplemented with organic minerals (0.75 g kg-1). At 112 days of housing (D112), the pigs were subjected to a hoof evaluation, at D115 they were weighed, and at D117, they were slaughtered (178 days of age). After boning, a blind analysis was performed on the medial and lateral condyles of the distal humerus. The supplemented animals (T2) had higher scores for the performance parameters of final weight (P=0.03), weight gain (WG) (P=0.02), and average daily weight gain (DWG) (P=0.021). For WG, T2 showed 3.10 kg more gain than the control; the increase in females was on average 4.07 kg and in males 2.45 kg. The prevalence of hoof lesions was 100% in both groups. The supplementation reduced the incidence of damage to the dew claws (P=0.02) and heel-sole cracks (P=0.02). The incidence of osteochondrosis was 19.13%, with no influence of supplementation. Supplementing pigs with the organic minerals Zn, Mn, and Cu during the finishing phase improved the WG, DWG, final weight, and hoof integrity.

Impact of Dietary Organic Mineral Supplementation on Reproductive Performance, Egg Quality Characteristics, Lipid Oxidation, Ovarian Follicular Development, and Immune Response in Laying Hens Under High Ambient Temperature.

The objectives of this study were to investigate the impact of dietary organic mineral mixture (manganese, zinc, and copper) supplementation on reproductive performance, egg quality characteristics, and immune response in laying hens under high ambient temperature. Hens were randomly divided into three treatments: (1) control (basal diet without organic mineral mixture (Mn, Zn, and Cu) supplementation); (2) basal diet + 0.5g/kg of organic mineral mixture; and (3) basal diet + 1g/kg of organic mineral mixture from 30 to 38weeks of age. Hen-day egg production and egg mass were significantly increased by dietary supplementation of 1g/kg of organic mineral mixture, while feed intake was not affected; therefore, feed conversion ratio (FCR) was significantly improved (P < 0.01). Egg weight, albumen width, shell weight, and shell thickness were significantly increased by the dietary treatments. Serum total cholesterol and glucose were significantly decreased by organic mineral mixture supplementation. Interestingly, yolk contents of total cholesterol and malondialdehyde (MDA) were significantly decreased. Yolk contents of Zn and Cu were significantly increased, while Mn was numerically increased (P > 0.05). Dietary organic mineral mixture supplementation improved the antibody titers against avian influenza H9N1 significantly (P < 0.05) and Newcastle disease virus numerically (P > 0.05) in comparison with the control diet. It might be concluded that the inclusion of organic mineral mixture (Mn, Zn, and Cu) enhanced reproductive performance, shell quality characteristics, plasma profile, yolk mineral concentration, yolk lipid oxidation, and immune response in laying hens under high ambient temperature.

362 Effects of organic versus conventional diets on dam and kid weight in Nubian caprine

Abstract Recently, agriculture has trended towards the utilization of organic products, due to the belief of superior outcomes, reporting healthier animals with better weight gains, and higher quality products among consumers. However, previous research regarding organic feedstuffs has reported conflicting results, supporting the need for continuing research. Reproductive success throughout and post gestation of caprine dams is closely related to the nutritional intake of the animal, which could be impacted by consumption of organic products. The objective of the current study was to observe caprine kid birth weight, kid ADG, and dam weight throughout pregnancy comparing organic and conventional feedstuffs. Eight pregnant Nubian dams (n = 4) between 1 and 5 yr of age with initial BW between 45.4 and 68.5 kg were separated into groups based on initial BW and BCS. The organic group received a certified organic concentrate, certified organic mineral supplement, and a certified organic molasses while the conventional group received a conventional concentrate, conventional mineral supplement, and conventional molasses. Both groups had ad-libitum access to hay and water. Dams were fed 0.907kg/d/45.4kg of BW of concentrate and mineral supplement at 0.012kg/d/45.4kg of BW in individual feeding stocks at 0630 and 1730 for the last six wk of gestation and three wk post-parturition. Dams were individually weighted and observed weekly for BCS using the American Daily Goat Association’s BCS 1 to 5 scale. After parturition, kid birth weight was measured using a hanging sling scale and daily kid weight gain was recorded for three wk post parturition. Differences in kid birth weight, kid ADG, and dam weight were analyzed by two-tailed T-Test at P &gt; 0.05. No differences between kid ADG (P = 0.759), kid birth weight (P = 0.405), or for dam weekly weight (P = 0.457) were observed. Thus, the increase in cost to raise certified organic livestock, such as caprine, is not financially justifiable.

Upregulation of antioxidant enzymes by organic mineral co-factors to improve oxidative stability and quality attributes of muscle from laying hens

This study investigated the impact of organic trace minerals (OTM: Fe, Cu, Mn, and Zn proteinates premix) and Se-yeast (0.25 mg/kg) as a feed supplement versus inorganic forms of the same minerals (sulfated) on the enzymatic (GPX, CAT, SOD), oxidative, and physicochemical properties of fresh breast muscle from 68-week old hens during storage (4 °C) for 0, 2, 4 and 6 days. OTM with Se-yeast was more effective than sulfated minerals or selenite for enriching meat with Zn, Se and vitamin E (P < .05). At only one-third of the full inorganic mineral supplementation level, OTM with Se-yeast still induced higher GPX activity and greater inhibition of lipid (58% less TBARS) and protein (24% less sulfhydryl loss) oxidation. The organic mineral treatments significantly decreased drip loss and improved color stability of meat when compared with inorganic mineral supplements. Enhanced muscle cellular antioxidant enzymatic activity by the mineral co-factors was plausibly implicated in the protection.

Mineral supplementation: effects on bone integrity and intestinal morphometry of broiler chickens challenged with Eimeria sp

Abstract The objective of this study was to evaluate the effect of supplementation of organic minerals on the productive performance and bone quality of broilers from 1 to 21 days of age and the intestinal health in situations of enteric challenge from 21 to 28 days of age. In a completely randomized design, with two treatments composed for minerals as sulfate and Carbo-Amino-Phospho-Chelate (CAPC), a total of 900 male broiler chicks were allocated to nine replicates and 18 experimental units with 50 birds each. 640 birds at 21 days of age were transferred to experimental cages and distributed in a completely randomized design, in factorial 2 × 2 (minerals as sulfate and CAPC × with and without enteric challenge), obtaining 4 treatments with 16 replicates and 10 birds each. In the same day of change, the group of challenged broilers received a commercial vaccine for coccidiosis that covers the Eimeria sp. At 7 days, the supplementation with CAPC minerals resulted in higher (p&lt;0.05) weight gain and better feed conversion in relation to the inorganic source. The deposition of minerals evaluated in the tibia of broilers was not influenced (p&gt;0.05) by the source of minerals, with the exception of Cu and Mn, whose deposition was greater (p&lt;0.05) in the bones of poultries supplemented with inorganic source of minerals. There was higher (p&lt;0.05) length and width of the villi and increase in the ratio villus: crypt in response to the intestinal spoliation with CAPC supplementation when compared to the inorganic source.

Effects of trace mineral amount and source on aspects of oxidative metabolism and responses to intramammary lipopolysaccharide challenge in midlactation dairy cows

Trace minerals have important roles in immune function and oxidative metabolism; however, little is known about the relationships between supplementation level and source with outcomes in dairy cattle. Multiparous Holstein cows (n=48) beginning at 60 to 140 days in milk were utilized to determine the effects of trace mineral amount and source on aspects of oxidative metabolism and responses to intramammary lipopolysaccharide (LPS) challenge. Cows were fed a basal diet meeting National Research Council (NRC) requirements except for no added zinc (Zn), copper (Cu) or manganese (Mn). After a 4-week preliminary period, cows were assigned to one of four topdress treatments in a randomized complete block design with a 2×2 factorial arrangement of treatments: (1) NRC inorganic (NRC levels using inorganic (sulfate-based) trace mineral supplements only); (2) NRC organic (NRC levels using organic trace mineral supplements (metals chelated to 2-hydroxy-4-(methythio)-butanoic acid); (3) commercial inorganic (approximately 2×NRC levels using inorganic trace mineral supplements only; and (4) commercial organic (commercial levels using organic trace mineral supplements only). Cows were fed the respective mineral treatments for 6 weeks. Treatment effects were level, source and their interaction. Activities of super oxide dismutase and glutathione peroxidase in erythrocyte lysate and concentrations of thiobarbituric acid reactive substances (TBARS) and total antioxidant capacity (TAC) in plasma were measured as indices of oxidative metabolism. Effects of treatment on those indices were not significant when evaluated across the entire experimental period. Plasma immunoglobulin G level was higher in cows supplemented with organic trace minerals over the entire treatment period; responses assessed as differences of before and after Escherichia coli J5 bacterin vaccination at the end of week 2 of treatment period were not significant. Cows were administered an intramammary LPS challenge during week 5; during week 6 cows fed commercial levels of Zn, Cu and Mn tended to have higher plasma TAC and cows fed organic sources had decreased plasma TBARS. After the LPS challenge, the extent and pattern of response of plasma cortisol concentrations and clinical indices (rectal temperature and heart rate) were not affected by trace mineral level and source. Productive performance including dry matter intake and milk yield and composition were not affected by treatment. Overall, results suggest that the varying level and source of dietary trace minerals do not have significant short-term effects on oxidative metabolism indices and clinical responses to intramammary LPS challenge in midlactation cows.

Relationship of organic mineral supplementation and spermatozoa/white blood cells mRNA in goats

The antioxidant properties and the protective role of organic zinc (Zn) and copper (Cu) in white blood cells (WBCs) and spermatozoa were analyzed through quantification of superoxide dismutase 1 (SOD1), catalase (CAT), glutathione peroxidase 4 (GPx4) and nuclear factor erythroid 2-like 2 (NFE2L2) and correlations were determined with sperm functional characteristics in Osmanabadi bucks. Bucks (aged 5 months; n = 40) were divided into ten groups, and the dietary treatments comprised of a control and nine treatment groups as follows: organic Zn as Zn 20, Zn 40 and Zn 60, organic Cu as Cu 12.5, Cu 25, Cu 37.5 and combined organic Zn and Cu as Zn 20+Cu 12.5, Zn 40+Cu 25, Zn 60+Cu 37.5, respectively per kg dry matter for a period of 8 months. The blood (120 and 240 days) and semen (240 days: 40 × 4 = 160) samples were collected from 40 bucks. In WBCs: the relative abundance of mRNA for SOD1, CAT, GPx4, NFE2L2 was greater (P < 0.05) in (120 and 240 days) in majority of the mineral supplemented animals. In spermatozoa: the relative abundance of SOD1, NFE2L2, GPx4 and CAT mRNA was greater (P < 0.05) in selected treatment groups. The abundance of SOD1 mRNA in WBCs was positively correlated (P < 0.05) with sperm mass motility (r = 0.692, P = 0.027). The abundance of GPx4 mRNA was negatively correlated (P < 0.05) with type A sperm (straightness; STR) > 85% and amplitude of lateral head displacement (ALH) > 2.5 μm/ s) (r = −0.711, P = 0.021) and (P < 0.05) positively correlated with sperm viability (r = 0.669, P = 0.035). Organic Zn and Cu supplementation was associated with an increase in the expression of antioxidant defense enzyme genes in bucks.

473 Effects of Feeding Organic and Conventional Mineral Supplements on Dam Weight throughout the Last Period of Gestation in Nubian Goats.

473 Effects of Feeding Organic and Conventional Mineral Supplements on Dam Weight throughout the Last Period of Gestation in Nubian Goats.

499 Effects of Conventional Verse Organic Mineral Supplementation on Kid Birth Weight in Nubian Goats.

499 Effects of Conventional Verse Organic Mineral Supplementation on Kid Birth Weight in Nubian Goats.

Nutrient Digestibility of Beef Cattle Ration with Total Mixed Fiber Amoniation (TMFA) as Basal Feed and Organic Mineral Supplementation by In Vitro

The research was aimed to obtain the level of organic minerals supplementation with Total mixed fiber Amoniation (TMFA) as basal feeding for the improvement of nutrient digestibility in rumen. Technique of research conducted by In Vitro technique. The method used in this research is a Completely Randomly Designed (CRD) with 4 treatments and 4 replications. P1: 60% amoniation TMF + 0 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Swamp Legumes. P2: 60% ammonia TMF + 0.75 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Swamp Legum, P3: 60% ammonia TMF + 1 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Legum Swamp P4: 60% amoniation TMF + 1.5 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Swamp Legum. Each treatment was added with an organic micro-mineral consisting of 40 ppm organic Zn, 10 ppm organic Cu, 0.10 ppm organic Se, and 0.30 ppm organic Cr. The parameters measured in the in-vitro technique were, measurement of nutrient digestibility which consists of dry matter and organic matter, crude protein, crude fiber, NDF and ADF. The results showed that organic mineral supplementation had significantly different effect (P <0.05) on nutrient digestibility (dry matter, organic matter, crude protein, crude fiber, ADF, NDF). The conclusion of this study was that organic mineral supplementation of Ca, P and S 1.5 times of requirement according to NRC (2000) gave the best results for in vitro nutrient beef digestion with Total mixed fiber ammoniation (TMFA) as basal feed and supplementation of l5% legume swamp (Kemon air). Keywords : Amoniation, total mixed fiber, organic mineral, nutrient digestibility

Effects of palm kernel shell ash as organic mineral supplement on performance of broiler chicks

Evaluation of palm kernel shell ash (PKSA) as organic mineral supplement on broiler chicks performance was conducted. Ninety six Arbor Acre day old chicks were randomly assigned in 3 replicates of eight birds per replicate to four experimental diets containing graded levels of PKSA at 0, 5,10 and 15kg/ton of feed labeled T1, T2, T3 and T4 respectively. At 1st week of life, the chicks were assessed for growth performance, digestive tract development, histology and digesta pH. The growth performance of the chicks were affected (P less than 0.05) by the supplementation on treatment groups in all parameters except the FCR. The digestive tract development shown by percentage crop weight, proventriculus weight, liver weight and large intestinal weights were significantly affected. The histological analysis of the villi shows that birds consuming T1 and T3 diets were more developed (p less than 0.05) than those consuming T2 and T4 diets. The pH of the digesta contents in the GIT of the various segments showed that PKSA supplementation affected (P less than 0.05) them except those in the proventriculus and large intestine.The quadratic function showed that only pH of digesta in crop and small intestine were positively influenced (P less than 0.05) among the significant parameters by optimum inclusion levels of 25% and 17.5% PKSA respectively. Therefore, PKSA could be used favorably in broiler chicks production at levels of up to 10%.

Inorganic, organic, and encapsulated minerals in vegetable meal based diets for Sparus aurata (Linnaeus, 1758).

Substituting fishmeal (FM) with vegetable meal (VM) can markedly affect the mineral composition of feeds, and may require additional mineral supplementation. Their bioavailability and optimal supplementation levels depend also on the form of delivery of minerals. The aim of the study was to determine the effect of different delivery forms of three major trace elements (Zn, Mn and Se) in a marine teleost. Gilthead sea bream juveniles of 22.5 g were fed a VM-based diet for 12 weeks that was either not supplemented with these minerals or supplemented with inorganic, organic, or encapsulated inorganic forms of minerals in triplicate and compared to a FM-based diet. Our results showed that mineral delivery form significantly affected the biochemical composition and morphology of posterior vertebrae. Supplementation of VM-based diets with inorganic forms of the target minerals significantly promoted growth, increased the vertebral weight and content of ash and Zn, enhanced bone mineralization and affected the vertebral shape. Conversely, encapsulation of inorganic minerals reduced fish growth and vertebral mineral content, whereas supplementation of organic minerals, enhanced bone osteogenesis by upregulating bone morphogenetic protein 2 (bmp2) gene and produced vertebrae with a larger length in relation to height. Furthermore, organic mineral forms of delivery downregulated the expression of oxidative stress related genes, such as Cu/Zn superoxide dismutase (Cu/Zn sod) and glutathione peroxidase 1 (gpx-1), suggesting thus that dietary minerals supplemented in the organic form could be reasonably considered more effective than the inorganic and encapsulated forms of supply.

English

Micro minerals (Trace minerals) are required for normal growth and development in broilers. The present study was undertaken to compare the effect of replacing inorganic with organic trace minerals on growth performance, carcass characteristics and chemical composition of broiler thigh meat. A corn soybean based diet supplemented with organic trace minerals (OTM) (x) and an inorganic trace mineral (ITM) (y) was prepared. Four hundred eighty birds were stratified by weight and randomly assigned to 6 dietary treatments with four replicates per treatment (20 birds/replicate pen). The treatments were A) Positive control group diet (x) supplemented for whole period (0-5 wk). B) Fed diet (x) during starter and grower phase (1-4 wk) and diet (y) was offered in finisher phase (5 wk). C) 1st 3 weeks were fed diet (x) and last two weeks were given diet (y). D) First 2 weeks were fed diet (x) while, diet (Y) offered in the last three weeks. In the treatment (E), diet (x) offered during initial phase and nourished with diet (y) during grower and finisher phase while in treatment (F), complete diet (y). The result showed that organic trace mineral supplementation did not affect growth performance in the first and last week of trail but during 2nd, 3rd and 4th weeks organic trace mineral supplementation showed better growth performance than that of inorganic trace mineral supplementation. Chicken fed with organic trace mineral supplemented diets had the better growth performance which differed from that of inorganic supplemented diet groups. Additionally, organic trace minerals supplementation did not affect dressing percentage and giblets weight but shank and keel lengths were improved. While, OTM supplementation did not alter dry matter, ash and moisture content in thigh meat; however, crude protein content was improved in thigh meat. Overall results demonstrated that the quality of broiler chicken meat in high organic trace mineral supplement increased relative to the low supplemented groups. It is concluded that addition of organic trace mineral to feed can improve the growth performance of broiler particularly during growing phase. Key words: Carcass, dry matter, growth, performance, replacing.

Chelated minerals and two limestone particle sizes on production of layers in the second laying cycle

SUMMARY The aim of this experiment was to evaluate the performance, egg quality, and bone quality of commercial white-egg layer hens in the second production cycle fed diets containing organic and inorganic minerals and two limestone particle sizes. A total of 215 birds with an average weight of 1.527 ± 0.092 kg were distributed in a completely randomized design in a 2 × 2 factorial arrangement (two mineral sources and two limestone particle sizes) with six replicates. The following four treatments were tested: T1 = inorganic minerals + 100% fine limestone; T2 = inorganic minerals + 50% fine limestone + 50% coarse limestone; T3 = organic minerals + 100% fine limestone; and T4 = organic minerals+ 50% fine limestone + 50% coarse limestone. No significant interaction occurred between the studied factors for any variable. Egg production, egg mass, bone resistance and bone deformity were higher with organic supplementation. Eggshell weight, percentage of eggshell, and specific gravity were higher in the treatments with the fine+coarse limestone association. In conclusion, organic mineral supplementation improves the performance based on egg production and egg mass. The association between fine and larger-sized limestone improves the external quality of eggs. The use of organic minerals improves the bone quality of birds in the second production cycle.

Comparison of Two Organic Trace Mineral Supplements for Cows Grazing Tall Fescue

Comparison of Two Organic Trace Mineral Supplements for Cows Grazing Tall Fescue

Effects of dietary supplementation of organic minerals on the performance of broiler chicks fed oxidised soybean oil

SummaryThe oxidation (rancidity) of fat is a very common feed quality issue, which can negatively affect growth performance and meat quality of broilers. Besides other factors, metal ions such as Zn, Cu and Fe can facilitate lipid peroxidation in feed. The objective of the current study was to investigate the effect of feeding corn soy diets containing fresh or oxidised soybean oil with different forms of microminerals on production performance of broiler chicks. Dietary treatments consisted of a 2 × 2 factorial structure with two kinds of soybean oil (oxidised or fresh) and two forms of microminerals (inorganic or organic). Mineral proteinate (Bioplex®, Alltech Inc.) including Zn, Mn, Cu and Fe was used as the organic source and was supplemented at the level equivalent to 25% of an inorganic source in the control diets. Organic selenium (Sel-Plex®, Alltech Inc.) at 0.3 mg/kg of diet was used to replace sodium selenite used at 0.3 mg/kg of diet in control diet. Oxidised soybean oil was prepared by convection heat (90°C for a period of seven days in a convection oven). A total of 1152 one-day old chicks were allotted randomly to the four dietary treatments using 12 replicates of 24 chicks per pen. Chicks were raised in floor pens for 42 days in an environmentally controlled room with free access to feed and water. There was no statistical interaction between oil source and mineral form on performance or mineral content of breast meat. Feeding oxidised oil increased (P &lt; 0.05) feed intake and decreased gain to feed ratio (FCE) of chicks. Supplementation with organic minerals improved (P &lt; 0.05) weight gain and FCE of chicks. The breast meat of chicks fed organic mineral had higher (P &lt; 0.01) Se content than those from the control group. The results indicated that the addition of organic minerals to broiler diets can minimise the negative impact of oxidised oil on the performance of broiler chicks.

Effect of Garlic Extract and Organic Mineral Supplementation on Feed Intake, Digestibility and Milk Yield of Lactating Dairy Cows

Effect of Garlic Extract and Organic Mineral Supplementation on Feed Intake, Digestibility and Milk Yield of Lactating Dairy Cows

Effectivity of probiotic, micromineral enriched yeast and their combination with Azadirachta indica leaves containing tannin on fermentability and digestibility of Pennisetum hybrid

Organic additive for animal had been explored to replace antibiotic growth promoter. Probiotic from lactic acid bacteria was widely used to support the microbial balances in digestive tract, while organic mineral was added into diets to improve bioavailability for preventing mineral deficiency disorders. This experiment was aimed to assess probiotic (Pediococcus acidilactici RS2) and micromineral enriched yeast (MEY) combined with tannin from neem (Azadirachta indica) leaves containing tannin on king grass (P. hybrid) fermentability using in vitro gas production technique. Treatments consisted of P0 (control/forage without additive), P1 (P0+MEY); P2 (P0+MEY+crude tannin); P3 (P0+Probiotic); P4 (P0+Probiotic+MEY), and P5 (P0+Probiotic+MEY+crude tannin). The study was arranged in a completely randomized design (CRD) with three replications in each treatment. Probiotic, MEY or tannin supplementation significantly increased (P<0.05) gas production without affecting volatile fatty acid, protozoa numbers, methane production and in vitro digestibility of forage. The highest cumulative gas production was found in forage treated by P4 followed by P5, P1, P5, P2, P3 and control. Kinetic of gas production was significantly affected by treatments after 8 h incubation. Although the treatments were only significantly affected gas production kinetic (b, c and total gas), the hierarchical cluster analysis indicated that some parameters consisted of acetate, propionate, in vitro digestibility, protozoa numbers, and methane production were closely correlated to the gas production kinetic parameters. It was concluded that either organic mineral supplementation or its combination with probiotic, and probiotic+tannin improved fermentabilty of forage without negative effect on in vitro digestibility.

Release of minerals in groundnut haulm based complete diets supplemented with organic and inorganic mineral sources by in sacco method in steers

The study was carried out to evaluate the effect of organic and inorganic mineral supplementation to groundnut haulm (GNH) based complete diets on mineral release by in sacco method. A basal complete diet was prepared with GNH and concentrate mixture (8% maize, 10% soybean meal, 21.5% deoiled rice bran and 0.5% salt) in 60:40 ratio. The basal diet was treated as control (T1) and 3 more diets were prepared by supplementing basal diet with commercial mineral mixture (T2), inorganic mineral supplements (T3) and organic mineral supplements (T4). The commercial mineral mixture was added at the rate of 1.5% in T2/sub&gt; diet by adjusting the deoiled rice bran to 20%. The inorganic mineral supplements were added at the rate of 26.4g (8.3g ZnSO4, 4.0g CuSO4 and 14.0 g MnSO4) in the T3 diet. The organic mineral supplements were added at the rate of 72g (12g Zn-P, 10 g Cu-P and 50g Mn-P) in the T4 diet. The in sacco mineral release of Cu, Mn and Zn from experimental diets showed that the disappearance % was higher in commercial mineral mixture supplemented diet followed by organic mineral supplemented diet, and then inorganic mineral supplemented diet. The in sacco copper, manganese and zinc release from feed ingredients revealed that copper disappearance (%) was higher in all the feed ingredients followed by Mn and Zn. The NDF degradability also increased with increase in incubation time. A correlation was drawn between in sacco mineral release and NDF degradability of the treatment diets. Significant positive correlation was observed between the NDF degradability and mineral release in the rumen. It can be concluded that the organic mineral supplements were better bioavailable than the inorganic mineral supplements.

In vivo evaluation of mineral bioavailability in groundnut haulm based complete diets supplemented with organic and inorganic mineral sources in goats

A study was carried out to evaluate in vivo mineral bio-availability in groundnut haulm based complete diets supplemented with organic and inorganic mineral sources in goats. A basal complete diet was prepared with GNH and concentrate mixture (8% maize, 10% soybean meal, 21.5% de-oiled rice bran and 0.5% salt) in 60: 40 ratio. The basal diet was treated as control (T1) and 3 more diets were prepared by supplementing basal diet with commercial mineral mixture at 1.5% (T2), inorganic mineral supplements at 26.4g (8.3 g ZnSO4, 4.0 g CuSO4 and 14.0 g MnSO4) (T3) and organic mineral supplements @ 72g (12g Zn-P,10 g Cu-P and 50g Mn-P) (T4). The CP, CF, EE, TA, AIA and NFE contents of the basal diet were 15.8, 20.0, 1.4, 17.8, 9.7 and 45.0% respectively. In vivo metabolic studies were carried out on 4 complete diets T1, T2, T3 and T4. The DMI was 2.7 kg/% body weight which is in accordance with ICAR (1998) recommendation. The DCP intake was 115.7, 121.2, 117 and 117 g/animal/day in T1, T2, T3 and T4 respectively. There was no significant difference between treatments with regard to DMI or DCP intake. Significant differences were also not observed between treatments with regard to total nitrogen excretion (g/day), N retention (g/day) and N retention expressed as % of intake. The N-retention expressed as % of intake in T1, T2, T3 and T4 were 57.1, 58.1, 52.0 and 54.1% respectively. The mineral supplementation did not influence the nitrogen retention in all the treatments. Positive nitrogen balances were observed in all the treatments showing that there was no negative effect of mineral supplementation on N- balance. The copper retention expressed as % of Cu intake in T1, T2, T3 and T4 were 65.1, 64.8, 70.8 and 75.0% respectively, suggesting that significant differences were observed between the treatments with regard to Cu intake (g/d) and copper retention (g/day). The zinc retention (g/day) and zinc retention expressed as per cent of intake showed significant differences between the treatments. Mn retention expressed as per cent of intake was 18.0, 38.2, 32.3 and 33.7% respectively in T1, T2, T3 and T4 treatments. Significant differences were observed between the treatments with regard to Mn intake (g/day), Mn retention and Mn retention expressed as % of intake. The plasma Cu, Mn and Zn concentrations in all the animals increased at the end of the metabolic study, as compared to the values at the start of the experiment. It can be concluded that the organic mineral supplements were better bio-available than the inorganic mineral supplements.