Effects of ammoniation and supplementation with sweet clover hay on intake and digestibility of flax straw by sheep

1991 ◽  
Vol 71 (2) ◽  
pp. 599-602 ◽  
Author(s):  
M. D. Howard ◽  
R. D. H. Cohen ◽  
J. A. Kernan
Keyword(s):  
Organic Matter ◽  
Key Words ◽  
Sweet Clover ◽  
Neutral Detergent Fibre ◽  
Acid Detergent Fibre ◽  
Organic Matter Digestibility ◽  
Flax Straw

Flax straw (FS) was fed either untreated or ammoniated (3.5% of DM) in varying proportions with sweet clover hay (SC) to lambs. The addition of SC to both untreated and ammoniated FS increased organic matter intake (OMI), digestible OMI (DOMI), organic matter digestibility (OMD) (P < 0.001) and neutral detergent fibre digestibility (NDFD) (P < 0.05). Ammoniation of FS increased OMI, DOMI (P < 0.01) and OMD (P < 0.05). Neither ammoniation nor SC affected (P > 0.05) acid detergent fibre digestibility (ADFD). Key words: Flax straw, ammoniation, sweet clover, intake, digestibility, sheep

Effects of supplement grain type and level of feeding on the milk production of early-lactation Holstein - Friesian cows grazing temperate and tropical pastures

2004 ◽  
Vol 44 (8) ◽  
pp. 735 ◽  
Author(s):  
B. C. Granzin
Keyword(s):  
Organic Matter ◽  
Milk Production ◽  
Milk Fat ◽  
Milk Protein ◽  
Volatile Fatty Acids ◽  
Lolium Multiflorum ◽  
Starch Digestibility ◽  
Tropical Pastures ◽  
Neutral Detergent Fibre ◽  
Organic Matter Digestibility

Two experiments were undertaken to examine the effects of supplement grain type (barley v. maize) and level of feeding [4.5 v. 8.1 kg dry matter (DM)/cow.day] on the milk production, nutrient intake and rumen fermentation of cows grazing swards of biennial ryegrass (Lolium multiflorum cv. Concord), prairie grass (Bromus willdenowii cv. Matua) (expt 1) or kikuyu (Pennisetum clandestinum cv. Common) (expt 2). There were no interactions (P>0.05) between grain type and level of feeding (G × L) on milk production, liveweight change or condition score in either experiment. When the main effects were examined, feeding maize as opposed to barley resulted in higher milk protein concentrations (P = 0.001) in both experiments (2.96 v. 2.83% and 2.91 v. 2.71% for expts 1 and 2, respectively), higher milk fat concentration (P = 0.001; 3.85 v. 3.36%) and daily milk fat yield per cow (P = 0.029; 875 v. 791 g) in experiment 1, and higher daily yield (P = 0.004) of milk protein in experiment 2 (618 v. 578 g). In both experiments, feeding increased supplement resulted in higher (P<0.05) daily yields per cow of milk (24.1 v. 22.0 L and 23.6 v. 20.1 L for expts 1 and 2, respectively) and milk protein (703 v. 637 g and 646 v. 550 g for expts 1 and 2, respectively), and lower (P<0.05) milk fat concentrations (3.46 v. 3.76% and 3.25 v. 3.57% for expts 1 and 2, respectively). In both experiments, there were no G × L interactions (P>0.05) on pasture intake, neutral detergent fibre digestibility or rumen concentrations of ammonia or volatile fatty acids. There were G × L interactions on organic matter digestibility (P = 0.019) in experiment 1 and on starch digestibility (P = 0.003) in experiment 2, with cows fed 4.5 kg DM/day of barley having higher organic matter digestibility, and cows fed either level of barley having higher starch digestibility. In both experiments, feeding more supplement reduced (P>0.05) daily pasture intake per cow (13.3 v. 11.3 kg DM and 9.9 v. 8.3 kg DM for expts 1 and 2, respectively). Feeding barley rather than maize caused higher starch digestibility (P = 0.006) in experiment 1 (93.0 v. 89.8%), and higher organic matter digestibility (P = 0.021) and neutral detergent fibre digestibility (P = 0.009) in experiment 2 (70.8 v. 69.3% and 62.9 v. 59.7%, for organic matter digestibility and neutral detergent fibre digestibility, respectively). Feeding maize rather than barley reduced (P = 0.034) rumen molar proportion of butyrate (16.1 v. 17.6 mol %) in experiment 1. These experiments show that feeding supplements based on maize, as opposed to barley can: increase the milk fat concentration and yield of cows grazing temperate pastures; increase the milk protein yield of cows grazing tropical pastures; and increase the milk protein concentration of cows grazing either temperate or tropical pastures.

scholarly journals The effect of ammoniation on the nutritive value of tall wheatgrass

1991 ◽  
Vol 71 (3) ◽  
pp. 867-870
Author(s):  
R. D. H. Cohen ◽  
K. A. Cruise ◽  
J. A. Kernan ◽  
E. C. Coxworth ◽  
J. E. Knipfel
Keyword(s):  
Organic Matter ◽  
Key Words ◽  
Protein Intake ◽  
Crude Protein ◽  
Nutritive Value ◽  
Agropyron Elongatum ◽  
Tall Wheatgrass ◽  
Digestible Organic Matter ◽  
Acid Detergent Fibre ◽  
Digestible Crude Protein

Tall wheatgrass (TWG, Agropyron elongatum (Host) Beauvois) was harvested at anthesis, ammoniated, fed to sheep and its nutritive value was compared with that of nonammoniated TWG. Ammoniation increased organic matter digestibility (OMD) from 59.2 to 65.9% (SEM = 1.45; P < 0.001), acid detergent fibre digestibility (ADFD) from 53.2 to 63.4% (SEM = 2.14; P < 0.001), neutral detergent fibre digestibility (NDFD) from 55.2 to 69.3% (SEM = 2.90; P < 0.001), digestible organic matter (DOMI) from 25.8 to 44.3 g kg−0.75 d−1 (SEM = 3.90; P < 0.001) and digestible crude protein intake (DCPI) from 1.33 to 5.97 g kg−0.75 d−1 (SEM = 0.97; P < 0.001). Key words: Tall wheatgrass, ammoniation, intake, digestibility, fibre, sheep

Performance of lambs and the incidence of staggers and heat stress on two perennial ryegrass (Lolium perenne) cultivars using a leader-follower rotational grazing management system

2001 ◽  
Vol 136 (1) ◽  
pp. 99-110 ◽  
Author(s):  
S. J. BLUETT ◽  
J. HODGSON ◽  
P. D. KEMP ◽  
T. N. BARRY
Keyword(s):  
Organic Matter ◽  
Heat Stress ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Nutritive Value ◽  
Fibre Content ◽  
Serum Prolactin ◽  
Neutral Detergent Fibre ◽  
Organic Matter Digestibility

A summer lamb finishing experiment at Palmerston North, New Zealand compared the performance and health of weaned lambs grazing Aries HD or Yatsyn 1 perennial ryegrass (Lolium perenne). Aries HD ryegrass was originally selected for increased digestibility over summer and early autumn. Two groups of Romney×Suffolk lambs (15 per group) were rotationally grazed on each cultivar in a leader-follower sequence to assess both the nutritive value of the pastures and the alkaloid challenge imposed by the respective cultivar/endophyte (Neotyphodium lolii) associations. Herbage from leader pastures contained a higher content of ryegrass (600 v. 474±27·3 g/kg, P < 0·001) and a lower content of dead material (355 v. 479±34·2 g/kg, P < 0·001) than follower pastures. The in vitro organic matter digestibility coefficient of leader pastures was greater (0·62 v. 0·55±0·024, P < 0·05) and the neutral detergent fibre content lower (592 v. 631±11·4 g/kg, P < 0·005) than follower pastures. Consequently, the leader lambs had faster liveweight gains (92 v. 53±10·6 g/day, P < 0·0005) than the follower lambs. Aries HD and Yatsyn 1 cultivars were similar in sward composition, in vitro organic matter digestibility, neutral detergent fibre content and nitrogen content. Lambs grazing Aries HD had a higher herbage intake in late January than lambs grazing Yatsyn 1 pasture (0·95 v. 0·85±0·023 kg OM/day, P < 0·005). Overall, the liveweight gains of lambs grazing Aries HD and Yatsyn 1 were similar (71 v. 73±10·6 g/day, P > 0·7).Grazing sequence and cultivar did not affect the concentrations of lolitrem B and peramine from herbage cut to ground level. However, serum prolactin concentration, which can indicate ergovaline intoxication, was lower in lambs grazing follower swards (181 v. 120±18·0 ng/ml, P < 0·005). Ergovaline concentration in Aries HD herbage was about half the concentration detected in Yatsyn 1 herbage (0·25 v. 0·49±0·050 mg/kg, P < 0·001). In addition, respiration rate, which can be an indicator of heat stress, was higher in lambs grazing Yatsyn 1 than Aries HD (77 v. 74±1·1 breaths per minute, P < 0·005). All lambs on all treatments had clinical ryegrass staggers from 10 February to 9 March. Lambs were removed from the experiment on 9 March. Both grazing sequence and cultivar affected the severity of ryegrass staggers. Staggers score was highest in Yatsyn 1 followers (4·4) and lowest in Aries HD leaders (3·1). Both grazing sequence and cultivar affected the alkaloid challenge imposed on lambs, resulting in differences in staggers severity, heat stress and performance of the lambs over the summer and autumn period.

scholarly journals Comparative study on the biomass yield, chemical composition and in-sacco dry matter degradability of different cultivars of triticale fodder

2012 ◽  
Vol 41 (1) ◽  
pp. 24-28
Author(s):  
MK Zannat ◽  
MR Alam ◽  
NR Sarker ◽  
KS Huque ◽  
MRI Khan ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Biomass Yield ◽  
Neutral Detergent Fibre ◽  
Fodder Production ◽  
P Content ◽  
Acid Detergent Fibre ◽  
In Sacco

An experiment was conducted to determine the biomass yield, chemical composition and in-sacco dry matter (DM) degradability of 10 cultivars (WRF-7, TSN-111, TYT-03, TYT-05, TYT-06, TYT-08, TYT-12, ITYN-10, ITYN-14 and ITYN-15) of triticale fodder. The fresh yield of different cultivars of triticale was ranged from 5.03 to 6.85 (t/ha). The organic matter (OM), crude protein (CP), acid detergent fibre (ADF), neutral detergent fibre (NDF), calcium (Ca) and phosphorus (P) contents of different cultivars of triticale were found 89.62 to 91.78 %, 21.34 to 25.99 %, 23.09 to 29.99 %, 46.77 to 50.80 %, 0.42 to 0.61 % and 0.33 to 0.41 %, respectively. The yield of DM and CP of different cultivars of triticale were varied from 0.77 to 1.44 (t/ha) and 0.193 to 0.351 (t/ha), respectively. Among different triticale cultivars the highest OM and CP contents were found in TYT-12 (91.78 %) and ITYN-10 (25.99 %), respectively. The highest NDF and ADF contents were found in ITYN-14 (50.80 %) and TYT-05 (29.99 %), respectively among different cultivars. The contents of Ca and P in ITYN-10 (0.61 %) and ITYN-14 (0.41 %), respectively were found to be the highest among the cultivars. Potential DM degradability observed in different cultivars of triticale was higher in ITYN-14 and TYT-05 (84.81 and 81.88 %, respectively) compared to others and relatively poor degradability was found in TSN-111 and TYT-03 (60.74 and 61.35 %, respectively). Therefore, it may be concluded that, the cultivar ITYN-10 will be the promising one due to comparatively higher fresh yield, organic matter (OM), crude protein (CP), neutral detergent fibre (NDF), calcium (Ca) and phosphorus (P) content and less acid detergent fibre (ADF) fraction cultivated for fodder production in Bangladesh.http://dx.doi.org/10.3329/bjas.v41i1.11972 

Effects of growth-stage-based alfalfa harvest on weed encroachment and resultant quality

1999 ◽  
Vol 79 (2) ◽  
pp. 243-247 ◽  
Author(s):  
J. R. Moyer ◽  
J. Fraser ◽  
L. M. Rode ◽  
A. K. Topinka
Keyword(s):  
Protein Content ◽  
Key Words ◽  
Crude Protein ◽  
Growth Stage ◽  
Vegetative Stage ◽  
Crude Protein Content ◽  
Neutral Detergent Fibre ◽  
Yield And Quality ◽  
Acid Detergent Fibre ◽  
Cutting Management

Growth-stage-based alfalfa harvest treatments were imposed on a 2-yr-old Beaver alfalfa stand in 1992 to determine the effect of harvest treatments on yield and quality. By 1993, alfalfa cut at the vegetative stage or prebud stage contained 25% dandelions by weight. At these stages weeds lowered crude protein content in the total forage relative to pure alfalfa. Weed contents were similar and less than 1% by weight in forage cut at prebloom and later stages. Crude protein and fibre contents were similar in total forage and pure alfalfa at prebloom and later stages. Key words: Acid detergent fibre, crude protein, cutting management, dandelion, growth stage, neutral detergent fibre

scholarly journals The effect of the chemical composition of maize plant lignin on the digestibility of maize stalk in the rumen of cattle

1973 ◽  
Vol 29 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Nadia F. Cymbaluk ◽  
A. J. Gordon ◽  
T. S. Neudoerffer
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Lignin Content ◽  
Ground Tissue ◽  
Maize Silage ◽  
Lignin Concentration ◽  
Normal Maize ◽  
Grass Hay ◽  
Acid Detergent Fibre ◽  
Organic Matter Digestibility

1. Digestibility of maize stalk from Troyer Reid (Tr) maize and its isogenic mutant (bm1) was studied by suspending nylon bags containing ground tissue in the rumen of a fistulated steer. The animal was given a grass hay–concentrate (5:3) diet or a maize silage–grass hay–concentrate (4:1:3) diet.2. The digestibility of the organic matter of the mutant maize stalk was greater than that of the normal maize stalk.3. Adaptation of the rumen to maize silage increased the organic-matter digestibility of the maize stalk.4. Lignin content was determined by two methods, namely organic matter insoluble in 72% sulphuric acid (method of the Association of Official Agricultural Chemists, 1960) (AOAC-lignin) and the organic matter lost from the ligno-cellulose complex (represented by acid-detergent fibre) by oxidation with potassium permanganate. The AOAC-lignin concentration was twice the permanganate-lignin concentration, but the amount of lignin estimated by both methods showed a significant negative relation to organic-matter digestibility. The AOAC-lignin concentration was greater in Tr than in bm1 maize but the permanganate-lignin concentration in Tr was slightly lower than in bm1.5. There was an irregular relationship between the amount of lignin extractable with dimethylformamide (DMF) and digestibility of organic matter due to the solution of some of the DMF-lignin during digestion. The loss of lignin was greater from the mutant maize stalk tissue than from the parent maize stalk tissue.6. The chemical composition of DMF-lignin determined by analysis showed a significant correlation between the syringealdehyde, p-hydroxybenzaldehyde and vanillin concentrations, and digestibility of organic matter.7. Higher concentrations of both phenolic aldehydes and acids were found in the less digestible Tr material than in the bm1 stalk tissue.

Prediction of nutritive value of hay from differential scanning calorimetry measurements on forage and feces

1998 ◽  
Vol 78 (3) ◽  
pp. 449-451
Author(s):  
G. W. Mathison ◽  
G. Sedgwick ◽  
T. F. Fenton ◽  
J. Walshaw
Keyword(s):  
Differential Scanning Calorimetry ◽  
Organic Matter ◽  
Key Words ◽  
Nutritive Value ◽  
Correlation Coefficients ◽  
Response Curves ◽  
Scanning Calorimetry ◽  
Cattle Feces ◽  
Low Correlation ◽  
Organic Matter Digestibility

Differential scanning calorimetry measurements were conducted with six alfalfa and nine grass hays and corresponding cattle feces. Feces and hays gave different responses. Relatively low correlation coefficients between hay minus fecal response curves and cattle intake and organic matter digestibility measurements indicated that such differences were of little practical value in predicting forage nutritive value. Key words: Differential scanning calorimetry, forage, cattle, feces, digestibility, intake

scholarly journals Chemical, nutritive, fermentation profile and gas production of citrus pulp silages, alone or combined with maize silage

2020 ◽  
Vol 50 (1) ◽  
pp. 161-169
Author(s):  
İ Ülger ◽  
S.B. Beyzi ◽  
M Kaliber ◽  
Y Konca
Keyword(s):  
Organic Matter ◽  
Nutrient Content ◽  
Gas Production ◽  
Metabolizable Energy ◽  
Maize Silage ◽  
Crude Fibre ◽  
Citrus Pulp ◽  
Acid Detergent Fibre ◽  
Organic Matter Digestibility

Quality attributes of citrus pulp silages that were ensiled alone and combined with maize silage were determined. Fresh samples of lemon, orange and tangerine pulps, maize plants and their combinations were fermented in glass jars for 90 days at about 20 - 25 °C. Treatments included i) 100% maize silage as control (MS); ii) 100% lemon pulp silage (LPS); iii) 100% orange pulp silage (OPS); iv) 100% tangerine pulp silage (TPS); v) 50% LPS and 50% maize silage (LPS + MS); vi) 50% OPS and 50% MS; and vii) 50% TPS and 50% maize silage (TPS + MS). The pH differed among treatment groups. The highest and lowest pH values were recorded for MS group and the OPS + MS group, respectively (3.84 vs. 3.51). The highest dry matter (DM), crude fibre (CF), neutral detergent fibre (NDF), acid detergent fibre (ADF) and hemicellulose (HEM) were observed for MS (P <0.01). Citrus pulp silages alone had significantly greater total digestible nutrients (TDN), organic matter (OM) and non-fibre carbohydrate (NFC) values than MS and the combined silages (P <0.01). Maize silage had higher lactic acid (LA) (101.2 g/kg DM) and acetic acid (AA) (49.3 g/kg DM) concentrations than the citrus groups (P <0.05). In vitro gas production (TG), methane (CH4), metabolizable energy (ME) and organic matter digestibility (OMD) of the silages were similar (P >0.05). Thus, citrus pulps can be ensiled in spite of their moisture content. However, to increased DM and nutrient content, the citrus pulps should be ensiled with 50% maize. Keywords: fermentation metabolites, methane production, organic matter digestibility

RESTORING PRODUCTIVITY TO AN ARTIFICIALLY ERODED DARK BROWN CHERNOZEMIC SOIL UNDER DRYLAND CONDITIONS

1986 ◽  
Vol 66 (2) ◽  
pp. 273-285 ◽  
Author(s):  
J. F. DORMAAR ◽  
C. W. LINDWALL ◽  
G. C. KOZUB
Keyword(s):  
Organic Matter ◽  
Soil Erosion ◽  
Green Manure ◽  
Soil Structure ◽  
Management Practices ◽  
Fertilizer Application ◽  
Sweet Clover ◽  
Yield Losses ◽  
Critical Factors ◽  
Structure Characteristics

A field was artificially eroded by levelling in 1957 and then continuously cropped to barley for 7 yr. Subsequently, a wheat-fallow experiment was conducted from 1965 to 1979 to determine the effects of four fertilizer treatments and green manure (yellow sweet clover) on restoring the productivity to soil that had been "eroded" to various depths. After 22 yr and 14 crops, the productivity of the land from which soil was removed has been improved but not fully restored. Although green manuring with yellow sweet clover improved soil structure, wheat yields were not improved because of competition for soil moisture and poorer in-crop weed control in this part of the rotation. The addition of 45 kg N plus 90 kg P2O5 per hectare in each crop year to sites from which 8–10, 10–20, or 46 + cm of soil had been removed resulted in yield increases of 18, 46, and 70%, respectively, over the unfertilized check of each treatment; the average yields were 104, 91, and 70%, respectively, of the undisturbed, unfertilized (check) treatment. On "erosion" treatments where only 8–10 cm of soil were removed, 45 kg N plus 22 kg P2O5 per hectare were sufficient to restore the productivity. Precipitation apparently had a greater effect than fertilizer application on wheat yields. The loss of organic matter and associated soil structure characteristics seemed to be critical factors contributing to yield losses associated with soil erosion. These results show that it is more practical to use management practices that prevent soil erosion than to adopt the practices required to restore eroded soil. Key words: Soil erosion, topsoil loss, water-stable aggregates, soil organic matter, green manure, precipitation

Sign in / Sign up

Export Citation Format

Share Document