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

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.

1970 ◽  
Vol 39 (1-2) ◽  
pp. 89-96
Author(s):  
A Akter ◽  
ZH Khandaker

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


1970 ◽  
Vol 24 (1) ◽  
pp. 23-28 ◽  
Author(s):  
O. Faruque ◽  
D. M. Walker

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.


1990 ◽  
Vol 51 (2) ◽  
pp. 321-331 ◽  
Author(s):  
M. F. J. van Houtert ◽  
H. B. Perdok ◽  
R. A. Leng

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.


1986 ◽  
Vol 42 (1) ◽  
pp. 73-79 ◽  
Author(s):  
S. A. Hassan ◽  
M. J. Bryant

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.


Animals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 279 ◽  
Author(s):  
Xuefeng Guo ◽  
Long Cheng ◽  
Junfeng Liu ◽  
Sujiang Zhang ◽  
Xuezhao Sun ◽  
...  

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.


1970 ◽  
Vol 74 (2) ◽  
pp. 217-225 ◽  
Author(s):  
W. H. Broster ◽  
J. D. Sutton ◽  
T. Smith ◽  
Valerie J. Broster ◽  
C. C. Balch

SUMMARYThree experiments on the effects of sugars on milk production and live weight of cows are described. Two experiments each with twelve cows were of latin square design with 5-week periods. The third was a continuous treatment experiment of 11 weeks duration with twenty cows. All the animals were in mid-lactation. Performance on the basal diet of hay and concentrates was compared to that when the basal diet was supplemented with 10·7 Meal digestible energy daily in the form of sucrose or glucose monohydrate or concentrates.Additional concentrates regularly increased milk yield, live-weight gain, solids-not-fat content of the milk, and yields of solids-not-fat and milk fat. Fat content of the milk was not affected.Sucrose had a small beneficial effect on milk yield; the effect of glucose monohydrate on yield was small and indecisive. Sucrose depressed milk fat percentage; the effect of glucose on milk fat percentage varied between experiments. Both sugars increased solids-not-fat content of the milk, solids-not-fat yield, and rate of live-weight gain.Over the longer treatment period in the third experiment milk fat content tended to recover partially for both sugar-supplemented rations. The effects on yield of milk and of milk fat did not alter. The effects on live-weight gain were established more decisively and the final order of the size of the beneficial effect of the supplements was: concentrates, glucose monohydrate, sucrose.At the end of the third experiment rumen, contents from all cows were sampled by stomach tube. The concentrates supplement had no effect on the proportions of volatile fatty acids. Both sugars depressed the proportion of acetic acid and increased the proportions of propionic, butyric and valeric acids. In all cases except that of butyric acid, where the reverse occurred, the effect of sucrose was greater than that of glucose monohydrate.


2020 ◽  
Vol 46 (1) ◽  
pp. 61-70
Author(s):  
R. Olajide ◽  
E. K. Asaniyan ◽  
S. M. Aro ◽  
O. B. Olusegun

Sixty (60) grower-finisher pigs (Landrace x Large white) were used to investigate the nutritional value of beniseed hull (BSH) as substitute for maize on performance, carcass, and organs characteristics of the experimental animals. Five experimental diets were formulated by incorporating BSH into basal diet to replace maize at 0, 25, 50, 75 and 100%; designated as T1 (control), T2, T3, T4 and T5, respectively. The experimental pigs were individually weighed and assigned to five dietary treatments of three replicates of four animals each in a completely randomized design. The animals were fed for 2 weeks pre-experimental period and thereafter for ten weeks during which data were collected. Feed cost per kg live weight gain (? 668.67) of the animals fed 0% BSH significantly (P<0.05) reduced to ? 620.06 (25% BSH), ? 527.24 (50% BSH), ? 509.74 (75% BSH) and ? 456.73 (100% BSH). The bled weight, scald weight, eviscerated weight, dressing percentage, bacon, fore hock, hind hock and tail were significantly (P<0.05) affected by dietary treatments. The biggest liver weight (2.27g/kg) obtained in the animals fed the control diet (0% BSH) reduced significantly (P<0.05) to 2.20 (25% BSH), 1.91 (50% BSH), 1.76 (75% BSH) and 2.00 (100% BSH). Variations obtained in the kidney weight (0.40 g/kg) of the experimental animals fed with 25% BSH-based diets were similar (P>0.05) to 0.38 g/kg in the control (0% BSH) with both significantly (P<0.05) reduced to 0.36 (50% BSH), 0.36 (75% BSH) and 0.32 (100% BSH), respectively. Beniseed hull (BSH) poses no health challenge to the pigs used in this study. There were reductions in the cost/kg and cost of feed per kilogram live-weight gain with increasing levels of BSH in the diets, the lowest being at 100% level of substitution; beniseed hull could economically and safely replace maize in pig's diets up to 100% level.


1993 ◽  
Vol 56 (3) ◽  
pp. 369-378 ◽  
Author(s):  
M. F. J. van Houtert ◽  
J. V. Nolan ◽  
R. A. Leng

AbstractThirty-six wether lambs were given food hourly consisting of mature chopped oaten hay, sprayed with 10 g urea per kg hay. A pelleted supplement was given containing 0 or 75 g/day fish meal and 0 or ca. 1·5 MJ/day gross energy as acetate or propionate in a 2 × 3 factorial design. Dry matter (DM) digestibility, nitrogen retention and urinary allantoin excretion were determined over 7 days. Tissue protein kinetics were estimated using15N-glycine. Net fluxes of acetate, bicarbonate and glucose were estimated with continuous infusion of14C-acetate,14C-bicarbonate and3H-glucose respectively.Intake of oaten hay (g DM per kg live weight per day) was reduced by supplementation. Live-weight gain was lower in lambs supplemented with propionate than in lambs given the basal diet only. Supplementation with fish meal increased DM digestibility, live-weight gain and wool growth. Daily excretion of urinary allantoin did not differ between groups of lambs. Nitrogen retention and protein flux were reduced in lambs supplemented with acetate or propionate and were increased in lambs given fish meal. Plasma acetate concentrations were higher for lambs supplemented with acetate. However, net flux of acetate did not differ between groups of lambs. The net flux of glucose was increased by supplementation with propionate and with fish meal. Plasma levels of β-hydroxybutyrate were reduced in lambs supplemented with propionate.Availability of propionate and glucose were not limiting live-weight gain in these lambs. Also, a high ratio of acetate to propionate did not reduce the apparent efficiency of nutrient use.


Reproduction ◽  
2006 ◽  
Vol 131 (4) ◽  
pp. 783-794 ◽  
Author(s):  
S Freret ◽  
B Grimard ◽  
A A Ponter ◽  
C Joly ◽  
C Ponsart ◽  
...  

The aim of our study was to test whether a reduction in dietary intake could improve in vitro embryo production in superovulated overfed dairy heifers. Cumulus–oocyte complexes of 16 Prim’ Holstein heifers (14 ± 1 months old) were collected by ovum pick-up (OPU), every 2 weeks following superovulation treatment with 250 μg FSH, before being matured and fertilized in vitro. Embryos were cultured in Synthetic Oviduct Fluid medium for 7 days. Heifers were fed with hay, soybean meal, barley, minerals and vitamins. From OPU 1 to 4 (period 1), all heifers received individually for 8 weeks a diet formulated for a 1000 g/day live-weight gain. From OPU 5 to 8 (period 2), the heifers were allocated to one of two diets (1000 or 600 g/day) for 8 weeks. Heifers’ growth rates were monitored and plasma concentrations of metabolites, metabolic and reproductive hormones were measured each week. Mean live-weight gain observed during period 1 was 950 ± 80 g/day (n = 16). In period 2 it was 730 ± 70 (n = 8) and 1300 ± 70 g/day (n = 8) for restricted and overfed groups respectively. When comparing period 1 and period 2 within groups, significant differences were found. In the restricted group, a higher blastocyst rate, greater proportions of grade 1–3 and grade 1 embryos, associated with higher estradiol at OPU and lower glucose and β-hydroxybutyrate, were observed in period 2 compared with period 1. Moreover, after 6 weeks of dietary restriction (OPU 7), numbers of day 7 total embryos, blastocysts and grade 1–3 embryos had significantly increased. On the contrary, in the overfed group, we observed more <8 mm follicles 2 days before superovulation treatment, higher insulin and IGF-I and lower nonesterified fatty acids in period 2 compared with period 1 (no significant difference between periods for embryo production). After 6 weeks of 1300 g/day live-weight gain (OPU 7), embryo production began to decrease. Whatever the group, oocyte collection did not differ between period 1 and 2. These data suggest that following a period of overfeeding, a short-term dietary intake restriction (6 weeks in our study) may improve blastocyst production and embryo quality when they are low. However, nutritional recommendations aiming to optimize both follicular growth and embryonic development may be different.


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