scholarly journals Zinc deficiency and the zinc requirements of calves and lambs

1967 ◽  
Vol 21 (3) ◽  
pp. 751-768 ◽  
Author(s):  
C. F. Mills ◽  
A. C. Dalgarno ◽  
R. B. Williams ◽  
J. Quarterman
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Basal Diet ◽  
Zn Deficiency ◽  
Zinc Intake ◽  
Zn Concentration ◽  
Rapid Fall ◽  
Trace Element Deficiency ◽  
Diagnosis Of Zn Deficiency ◽  
Zn Availability

1. The effects of changes in zinc intake on weight gain, plasma Zn concentration and the development of clinical lesions of Zn deficiency have been studies in Zn depletion and repletion studies with calves and lambs.2. A basal diet, the principal components of which are urea, dried egg white, starch, glucose, cellulose and arachis oil has been developed for trace element deficiency studies with ruminants.3. Weight gain ceased abruptly in both calves and lambs when either the unsupplemented basal diet was given or when Zn supplements provided only 0.05 mg Zn/kg live weight per day. Mean plasma Zn concentrations in these animals fell from pre-experiment values of between 0.8 and 1.2 μg Zn/ml to below 0.4 μg Zn/ml after 1 week on these treatments.4. Supplements providing 0.2 mg Zn/kg live weight per day were sufficient to maintain a good rate of growth but insufficient to prevent a fall in plasma Zn.5. Growth arrest occurring within 2 weeks and a rapid fall in plasma Zn occurring within 1 week after Zn supplements were withheld from calves and lambs that had previously received 0.7 mg Zn/kg live weight per day for 6 and 14 weeks respectively indicated that these species have only a limited capacity to store Zn in a form that can be utilized during periods of inadequate Zn intake.6. Tentative estimates are presented of the Zn requirements of calves maintained on this type of basal diet and the influence of ration composition of Zn availability is discussed.7. The possible value and the limitations of plasma Zn determination as an aid to the field diagnosis of Zn deficiency are considered.

Zinc application enhances grain zinc density in genetically-zinc-biofortified wheat grown on a low-zinc calcareous soil

2018 ◽  
pp. 107-110 ◽  
Keyword(s):  
Developing Countries ◽  
Grain Yield ◽  
Calcareous Soil ◽  
Zn Deficiency ◽  
Target Level ◽  
Zn Concentration ◽  
Grain Zinc ◽  
Zn Availability ◽  
Zinc Application ◽  
Grain Zn Concentration

Human zinc (Zn) deficiency is a worldwide problem, especially in developing countries due to the prevalence of cereals in the diet. Among different alleviation strategies, genetic Zn biofortification is considered a sustainable approach. However, it may depend on Zn availability from soils. We grew Zincol-16 (genetically-Zn-biofortified wheat) and Faisalabad-08 (widely grown standard wheat) in pots with (8 mg kg−1) or without Zn application. The cultivars were grown in a low-Zn calcareous soil. The grain yield of both cultivars was significantly (P≤0.05) increased with that without Zn application. As compared to Faisalabad-08, Zincol-16 had 23 and 41% more grain Zn concentration respectively at control and applied rate of Zn. Faisalabad-08 accumulated about 18% more grain Zn concentration with Zn than Zincol-16 without Zn application. A near target level of grain Zn concentration (36 mg kg−1) was achieved in Zincol-16 only with Zn fertilisation. Over all, the findings clearly signify the importance of agronomic Zn biofortification of genetically Zn-biofortified wheat grown on a low-Zn calcareous soil.

scholarly journals Triple super phosphate as a source of phosphorus in the diet of growing bull

1970 ◽  
Vol 39 (1-2) ◽  
pp. 89-96
Author(s):  
A Akter ◽  
ZH Khandaker
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Basal Diet ◽  
Mean Values ◽  
Live Weight Gain ◽  
P Content ◽  
Triple Super Phosphate ◽  
Growing Cattle ◽  
Average Serum ◽  
Dietary Treatments

The study was conducted to investigate the use of Triple Super Phosphate (TSP) as a source of phosphorus in growing cattle. Twelve indigenous growing bull (initial live weight of 150 ± 10 kg) were assigned to four dietary treatments, viz. basal diet (T0) containing 0.14% P and basal diet was supplemented with TSP to provide P levels of 0.24 (T1), 0.35 (T2) and 0.45% (T3) respectively. All diets were formulated to be iso-nitrogenous and iso-energetic. Significant (P<0.05) differences in dry matter intake (DMI) were observed among the dietary treatments. The DMI (g/d) of animals fed diet having 0.35% P was higher than the diet containing 0.14, 0.24 and 0.45% P. The apparent digestibility of DM and OM were significantly (P<0.01) affected but CP and EE were not significantly (P>0.05) affected by the supplementation of P from TSP. The digestibility of CF and NFE was significantly (P<0.01) higher for diets T2 (0.35% P) compared to diet containing 0.14, 0.24 and 0.45% P. Apparent absorption of P was significantly (P<0.05) higher in animals fed on diet containing 0.14% phosphorous (T0) than diets with 0.35 and 0.45% phosphorus and true absorption (g/100g) of P was significantly (P<0.01) higher in the animals fed on diets T0 (0.14% P) than those fed on other diets (T1, T2 and T3. Phosphorus balance was significantly (P<0.01) higher for diets T1 (4.37 g/d), T2 (5.75 g/d) and T3 (7.09 g/d) compared to diet T0 (2.87 g/d) and highest value was observed on diet T3. There was no significant (P>0.05) difference among the mean values for live weight gain and the highest daily live weight gain was observed for diet T2 (69.44g) compared to the other diets T0, T1 and T3). The average serum P concentration of animals fed on diets T1, T2 and T3 was significantly higher (P<0.01) than that of animal fed on diet T0. The results suggested that supplementation of TSP as a source of phosphorus increased total DMI, digestibility of CF, NFE, P retention, P content of blood serum and live weight gain of growing calves. Therefore, supplementation of 0.21% P from TSP may be used in growing cattle ration. Key words: Phosphorus; Triple super phosphate; Growing bull DOI: http://dx.doi.org/10.3329/bjas.v39i1-2.9681 Bang. J. Anim. Sci. 2010, 39(1&2): 89-96

scholarly journals The relative biological potencies of retinyl palmitate and β-carotene for the milk-fed lamb

1970 ◽  
Vol 24 (1) ◽  
pp. 23-28 ◽  
Author(s):  
O. Faruque ◽  
D. M. Walker
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
High Protein Diet ◽  
Basal Diet ◽  
Retinyl Palmitate ◽  
High Protein ◽  
Protein Diet ◽  
Live Weight Gain ◽  
Retinyl Esters ◽  
Β Carotene

1. Thirty-four cross-bred newborn lambs were used. A high-protein diet (25% protein calories) was supplemented daily with retinyl palmitate (range, 13.75–440 μg/kg live weight 24 h), or with β-carotene (range, 68.5–2200 μg/kg live weight 24 h) for 21 days.2. Live-weight gain was not increased by supplementing the basal diet with either retinyl palmitate or β-carotene.3. The relative weights of β-carotene and retinyl palmitate (expressed as retinol) that were required to produce equivalent concentrations of retinol in the serum varied from 5:1 to 25:1, and for the liver (retinal + retinyl esters, expressed as retinol) the ratio varied from 3:1 to 9:1.

Factors affecting food efficiency and body composition of growing ruminants offered straw-based diets: supplementation with lipids with and without protein meal

1990 ◽  
Vol 51 (2) ◽  
pp. 321-331 ◽  
Author(s):  
M. F. J. van Houtert ◽  
H. B. Perdok ◽  
R. A. Leng
Keyword(s):  
Body Composition ◽  
Weight Gain ◽  
Water Content ◽  
Live Weight ◽  
Basal Diet ◽  
Nutrient Utilization ◽  
Protein Meal ◽  
Factors Affecting ◽  
Live Weight Gain ◽  
Body Fat Content

ABSTRACTGrowing heifers (experiment 1) and wether lambs (experiments 2 and 3) were offered ammoniated cereal straw with or without a protein meal. The effects of supplementation with long-chain fatty acids (LCFA; as calcium salts of LCFA (CaLCFA) or fat prills) on nutrient utilization were studied.Intake of the basal diet (g/kg live weight) was unaffected by the protein meal, but was often reduced by supplementation with LCFA, especially fat prills. Live-weight gain was increased both by supplementation with protein meal and CaLCFA. Fat prills only increased live-weight gain in the presence of protein meal and depressed live-weight gain in the absence of protein meal. There were small differences between the two sources of LCFA in their apparent effects on rumen fermentation.Supplementation with protein meal increased relative protein content (P < 0·05) and tended to increase water content (P > 0·05) in the wethers in experiment 3 (corrected to equal empty-body weight at slaughter). Of the LCFA, only CaLCFA tended to increase relative body fat content (by proportionately 0·23; (P > 0·05) but decreased relative protein and water content by 0·05 and 0·06 (P < 0·05).Supplementation of straw-based diets with as little as 20 g CaLCFA per kg food dry matter improved live-weight gain and efficiency of nutrient utilization of ruminants, particularly when offered in combination with a protein meal. There appeared to be marked differences in the effects of CaLCFA and fat prills on food intake, productivity and to some extent body composition.

Effect of energy source or fibre level in concentrates fed to finishing Swaledale lambs

2002 ◽  
Vol 2002 ◽  
pp. 121-121
Author(s):  
C A Middlemass ◽  
C M Minter ◽  
M Marsden
Keyword(s):  
Energy Source ◽  
Weight Gain ◽  
Food Intake ◽  
Live Weight ◽  
Basal Diet ◽  
The Other ◽  
Secondary Infections ◽  
Selection Of ◽  
Voluntary Food Intake ◽  
Effective Growth

Concentrate finishing systems for store lambs often involves a dramatic change in the basal diet as lambs are moved from being managed on, e.g. grass and / or roots to concentrates. If this is done too quickly there is a risk of digestive disturbances leading to acidosis and secondary infections. Hence, the selection of the carbohydrate balance between starch and digestible fibre is crucial as ruminants fed high levels of starch-based concentrates can develop sub-clinical acidosis and liver abscess, leading to decreased voluntary food intake and daily live weight gain (DLWG). The aim of this study was to evaluate two concentrate formulations for effective growth for finishing of Swaledale lambs, one concentrate being starch biased the other digestible fibre biased.

The effect of the addition of large amounts of cod-liver oil to the rations of yearling heifers on their rate of live-weight gain

1965 ◽  
Vol 65 (2) ◽  
pp. 227-232 ◽  
Author(s):  
W. H. Broster
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Basal Diet ◽  
Cod Liver Oil ◽  
Daily Ration ◽  
Live Weight Gain

1. Groups of twenty-four heifers were used in three experiments lasting 51–98 days. The effect on rate of live-weight gain of the addition of 150 ml. cod-liver oil to the daily ration was studied.2. The same treatments were used in each experiment: a basal diet consisting of hay and concentrates and two experimental diets consisting of the basal diet plus (a) 3 lb. concentrates, (b) 150 ml. (0·30 lb.) cod-liver oil. In one experiment flaked maize was used in the concentrates in place of crushed barley.

scholarly journals Growth performance and economics of production of cockerels fed graded levels of cassava (Manihot esculenta) grit basal diet

2021 ◽  
Vol 44 (3) ◽  
pp. 262-269
Author(s):  
S. E. Okosun ◽  
A. S. Eguaoje
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Live Weight ◽  
Basal Diet ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Net Profit ◽  
Inclusion Level ◽  
Finisher Diets

A sixteen week trial was conducted to assess the effects of replacing maize with cassava grit on growth performance and economics of production using 120 “Day old” Harco cockerel chickens. Four experimental cockerel starter and finisher diets were formulated. Diet 1 had 0% cassava grit (CG) while diet 2, 3 and 4 had maize replaced with cassava grit at 33.3, 66.6 and 100% replacement for maize. Chicks were randomly assigned to the four treatment diets in a completely randomized designed (CRD). Results on performance at starter phase revealed that average weekly weight gain and feed intake were significantly (P<0.05) highest among birds fed 33.3% CG. Feed conversion ratio was also significantly (P<0.05) influenced while at finisher the phase average live weight, weight gain and feed conversion ratio were significantly (P<0.05) higher among birds fed 33.3% CG compared to other levels of CG inclusion. Result on economics of production revealed that least cost of feed consume and cost of feed per kilogram weight gain at both phases were recorded among birds fed 100% CG. Income and net profit were highest among birds fed 33.3% CG. Therefore, Cassava grit can replace maize up to 33.3% inclusion level for optimum performance and good cost returns.

The response of store lambs to protein supplementation of a roughage-based diet

1986 ◽  
Vol 42 (1) ◽  
pp. 73-79 ◽  
Author(s):  
S. A. Hassan ◽  
M. J. Bryant
Keyword(s):  
Weight Gain ◽  
Fish Meal ◽  
Live Weight ◽  
Basal Diet ◽  
Rapeseed Meal ◽  
Linear Increase ◽  
Protein Supplementation ◽  
Barley Straw ◽  
Live Weight Gain ◽  
True Digestibility

ABSTRACTThe response of 35-kg store lambs to diets containing increasing rumen-undegradable nitrogen (UDN) concentrations was measured by live-weight gain and nitrogen (N) balance. A range of UDN concentrations from 2·4 to 7·2 g/kg dietary dry matter was achieved by supplementing a basal diet of NaOH-treated barley straw, tapioca, extracted rapeseed meal and minerals with both formaldehyde-treated rapeseed meal and fish meal. Sufficient diet to provide maintenance and a growth rate of 150 g/day was given to the lambs, according to live weight. Increasing levels of UDN promoted a linear increase in live-weight gain and N retention. However, the response to fish meal was greater than that for formaldehyde-treated rapeseed meal. The true digestibility of N of formaldehyde-treated rapeseed meal determined in chickens by ileal analysis was low in comparison to that of untreated rapeseed meal.

Effect of age, weight and adequacy of zinc intake on the balance between alkaline ribonuclease and ribonuclease inhibitor in various tissues of the rat

1978 ◽  
Vol 39 (2) ◽  
pp. 375-382 ◽  
Author(s):  
J. K. Chesters ◽  
Marie Will
Keyword(s):  
Ribonuclease Activity ◽  
Zn Deficiency ◽  
Ribonuclease Inhibitor ◽  
Zinc Intake ◽  
Zn Concentration ◽  
Tissue Homogenates ◽  
Alkaline Ribonuclease ◽  
Natural Inhibitor ◽  
Effect Of Age

1. Deficiency of zinc inhibits growth and also increases the activity of alkaline ribonuclease in certain tissues of the rat (Prasad & Oberleas, 1973). Zn could influence ribonuclease activity by direct effects on the enzyme or its natural inhibitor, or non-specifically as occurs when growth rate is affected by various other factors. These possibilities were studied.2. Alkaline ribonuclease was shown to be inhibited by Zn in vitro, but the concentrations of Zn required were so high that the enzyme was probably not directly affected by changes in tissue Zn concentration caused by dietary deficiency.3. At lower concentrations, Zn added in vitro increased the activity of alkaline ribonuclease in tissue homogenates probably by inactivating the inhibitor of the enzyme.4. Age, weight and particularly food restriction caused tissue-specific alterations of ribonuclease and ribonuclease inhibitor concentrations in liver, kidney, oesophagus, testis and thymus.5. The ribonuclease activities in liver, kidney and testis of Zn-deficient rats were unaltered in comparison with those of pair-fed rats. In thymus, which decreased in weight in the Zn-deficient animals, there was a concomitant increase in ribonuclease activity, but in oesophagus, the deficiency reduced the activity of ribonuclease.6. The effects of Zn deficiency upon alkaline ribonuclease and its inhibitor are probably secondary consequences of reductions in food intake or growth.

scholarly journals Effects of Licorice Extract Supplementation on Feed Intake, Digestion, Rumen Function, Blood Indices and Live Weight Gain of Karakul Sheep

Animals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 279 ◽  
Author(s):  
Xuefeng Guo ◽  
Long Cheng ◽  
Junfeng Liu ◽  
Sujiang Zhang ◽  
Xuezhao Sun ◽  
...  
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Basal Diet ◽  
Control Group ◽  
Feed Conversion ◽  
Live Weight Gain ◽  
Blood Indices ◽  
Licorice Extract ◽  
Cottonseed Hull ◽  
Measurement Period

This study was designed to investigate the effects of licorice extract supplemented to a cottonseed hull-based diet on rumen function, blood indices and growth of Karakul sheep. Twelve rumen-fistulated 1.5-year-old sheep were blocked in pairs by live weight. Sheep within pairs were randomly allocated to feed either on a cottonseed hull basal diet (control group) or on a basal diet containing 4.5% of licorice extract on dry matter (DM) basis (supplemented group). Sheep were housed individually and fed for 60 days, with a 15-day adaptation period and a 45-day measurement period. Feed intake and live weight gain were quantified. Rumen and blood samples were taken during the measurement period. The DM intake was lower for the supplemented group than for the control group. The mean ruminal concentrations of total volatile fatty acid (VFA) and acetate and the ratio of acetate to propionate were lower, while the levels of propionate and butyrate were higher for the supplemented group than for the control group. Average daily live weight gain, digestible energy intake, apparent nutrient digestibility and feed conversion efficiency did not differ between the two treatments. The serum concentrations of immunoglobulin A and G were 2.1 and 1.8 times greater, and total antioxidant and superoxide dismutase increased by 1.8 and 1.2 times in the supplemented group compared with the control group. These results indicated that licorice extract supplementation in the diet at 4.5% of DM had a limited impact on rumen function but improved blood immunoglobulin and anti-oxidative status of Karakul sheep, without impairment of feed conversion efficiency or live weight gain.

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