The effect of reducing particle size of wheat straw on feed intake, digestibility and energy requirement for chewing in cattle

1997 ◽  
Vol 36 (4) ◽  
pp. 328-329
Author(s):  
A. Susenbeth ◽  
R. Mayer ◽  
G. U. Lang
Keyword(s):  
Particle Size ◽  
Wheat Straw ◽  
Feed Intake ◽  
Energy Requirement

scholarly journals Effects of Roughage Quality and Particle Size on Rumen Parameters and Fatty Acid Profiles of Longissimus Dorsi Fat of Lambs Fed Complete Feed

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2182
Author(s):  
Abdulkareem M. Matar ◽  
Mutassim M. Abdelrahman ◽  
Ibrahim A. Alhidary ◽  
Moez A. Ayadi ◽  
Mohsen M. Alobre ◽  
...  
Keyword(s):  
Particle Size ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Wheat Straw ◽  
Feed Intake ◽  
Longissimus Dorsi ◽  
Control Group ◽  
Fa Composition ◽  
Alfalfa Hay ◽  
T1 And T2

The fatty acid composition for the longissimus dorsi (LD) fat of carcass sheep is a crucial factor impacting meat quality. We performed a 90-day feeding trial of 25 Naemi lambs to investigate the effects of roughage sources (alfalfa or wheat straw) of two sizes (regular and 1 cm chopped) when fed with pelleted total mixed ration (TMR) on the growth performance, fermentation patterns, and fatty acid (FA) composition of longissimus dorsi (LD) fat. Lambs were randomly assigned to individual pens with five treatment diets, as follows: C, control group with TMR; T1, TMR and regular alfalfa hay; T2, TMR and alfalfa hay chopped to 1 cm; T3, TMR and regular wheat straw; and T4, TMR and wheat straw chopped to 1 cm. Four lambs were randomly selected from each treatment (20 total) and sacrificed. LD fat of the carcass was extracted and analyzed for FA using a gas chromatography-mass spectrometry. Significantly increased feed intake was found in T1 and T2. The FA composition of LD fat in T2 had higher unsaturated fatty acid (UFA), omega-6 (n6), and omega-3 (n3) FA content. Conjugated linoleic acid (CLA) and α-linoleic acid were highest in lambs fed T1 and T2. Feeding different types of roughage, especially alfalfa hay, either regular or chopped, with total pelleted mixed ration is crucial to improving feed intake and body weight gain, as it positively enhances the rumen microbial fermentation process by controlling rumen pH. The FA profiles of meat from lambs fed TMR with regular or 1 cm particle size alfalfa hay (T1 and T2) are recommended for human consumption as a source of healthy FAs.

scholarly journals 27 Defining a robust sow: swine nutrition perspective on reproduction and lactation

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 13-13
Author(s):  
Joel M DeRouchey ◽  
Mike D Tokach ◽  
Robert D Goodband ◽  
Jason C Woodworth ◽  
Steve S Dritz ◽  
...  
Keyword(s):  
Birth Weight ◽  
Milk Production ◽  
Body Condition ◽  
Fetal Growth ◽  
Feed Intake ◽  
Energy Requirement ◽  
Meta Analysis ◽  
Mammary Development ◽  
Late Gestation ◽  
Embryo Survival

Abstract Improvements in modern sow prolificacy have markedly increased the number of pigs weaned, thus the ability of sows to provide nutrients to support fetal growth and milk production has been enhanced. The goals of the gestation nutrition program consist of meeting the nutrient requirements for maintenance and growth and for adequate conceptus development, while managing body condition. Early gestation represents the best opportunity for replenishing body reserves, whereas in late gestation, both estimated protein deposition and energy requirement are exponentially increased and directed towards fetal growth and mammary development. Increased feed intake after breeding has been presumed to be detrimental to embryo survival; however, data with modern line sows demonstrates to feed thin sows to recover body condition as quickly as possible while avoiding feed deprivation immediately after breeding. Importance of body condition scoring remains unchanged: feed thin sows to bring back to adequate body condition and prevent over-conditioned sows at farrowing. A recent meta-analysis showed increasing late gestation feed intake seems to modestly improve piglet birth weight by 28 g per piglet in gilts and sows. Also, recent findings in gestating sows suggest modern genotypes have improved feed efficiency and propensity for growth. Therefore, increasing energy intake during late gestation has a modest effect on piglet birth weight and a negative effect on stillborn rate. Historically, lactation catabolism impacted subsequent reproductive performance of sows, particularly in first-parity. However, contemporary sows appear to be increasingly resistant to the negative effects of lactational catabolism. Even so, continued emphasis on maximizing lactation feed intake is critical to support milk production and prevent excessive lean tissue mobilization. Research data suggests that ad libitum feeding and offering lactation diets during the wean-to-estrus interval is not needed. Modern genetic sow lines appear to be more robust from a nutritional perspective than in the past.

Influence of particle size and microbial phytase supplementation on the performance, nutrient utilisation and digestive tract parameters of broiler starters

2009 ◽  
Vol 49 (8) ◽  
pp. 704 ◽  
Author(s):  
A. M. Amerah ◽  
V. Ravindran
Keyword(s):  
Particle Size ◽  
Weight Gain ◽  
Digestive Tract ◽  
Feed Intake ◽  
Coarse Particle ◽  
Hammer Mill ◽  
Particle Sizes ◽  
Broiler Performance ◽  
Nutrient Utilisation ◽  
Microbial Phytase

The aim of the present experiment was to examine the interaction between particle size and microbial phytase supplementation on the performance, nutrient utilisation and digestive tract development of broiler starters fed maize-based diets. The experimental design was a 2 × 2 factorial arrangement of treatments evaluating two maize particle sizes (medium and coarse) and two levels of phytase supplementation (without or with 500 phytase units/kg diet). The two particle sizes were achieved by grinding the whole maize in a hammer mill to pass through 3- and 7-mm screens, respectively. Broiler starter diets, based on maize and soybean meal, were formulated to meet recommended requirements for major nutrients, except phosphorus. Each of the four diets was fed ad libitum to six pens of eight male broilers each, from day 1 to day 21 post-hatching. Phytase supplementation increased (P < 0.001) the feed intake and weight gain, and lowered (P < 0.05) feed per gain in both medium and coarse particle size diets. Coarse grinding improved (P < 0.05) weight gain, but had no effect (P > 0.05) on feed intake and feed per gain. No interactions (P > 0.05) between phytase supplementation and particle size were observed for any of the performance parameters. Phytase supplementation increased (P < 0.001) ileal phosphorus digestibility and toe ash content of birds fed the medium particle size diet, but had no effect in those fed the coarse particle size diet. Apparent metabolisable energy and ileal digestibility of calcium and nitrogen were not influenced by particle size or phytase supplementation. The present findings suggest that the effectiveness of supplemental phytase on broiler performance is not influenced by the particle size of maize.

Feed Intake in Guinea Fowl, Layer Hen and Pheasant as Influenced by Particle Size of Pelleted Diets*

2011 ◽  
Vol 10 (3) ◽  
pp. 238-240 ◽  
Author(s):  
V. Tufarelli ◽  
R.U. Khan ◽  
V. Laudadio
Keyword(s):  
Particle Size ◽  
Feed Intake ◽  
Guinea Fowl

scholarly journals Influence of Milling Techniques on the Performance of Wheat Straw Ash in Cement Composites

2020 ◽  
Vol 10 (10) ◽  
pp. 3511
Author(s):  
Abdul Qudoos ◽  
Ehsanullah Kakar ◽  
Atta ur Rehman ◽  
In Kyu Jeon ◽  
Hong Gi Kim
Keyword(s):  
Particle Size ◽  
Wheat Straw ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Hydration Reaction ◽  
Cement Composites ◽  
Cement Production ◽  
X Ray ◽  
Worldwide Production ◽  
Straw Ash

The worldwide production of cement is growing every year due to its increased use in the construction. Cement production is affiliated with an environmental concern as it contributes to the CO2 emissions. It is imperative to reduce the cement production by incorporating supplementary cementitious materials in the cement composites. In this research study, wheat straw ash (WSA) was used as an alternate of ordinary Portland cement. The ash was ground separately with a ball mill and a disintegrator mill as well as with a combination of both to enhance its pozzolanic efficiency. Mortar and paste specimens were made by substituting cement with WSA (20% by weight). Ash specimens were examined in terms of particle size distribution, X-ray diffraction, and X-ray fluorescence analyses. The performance of the ash specimens in cement composites was examined via compressive and flexural strengths, and ultrasonic pulse velocity (UPV) tests. Isothermal calorimetric, thermogravimetric analyses (TGA), mercury intrusion porosimetry (MIP), and scanning electron microscopy (SEM) were also employed on the specimens. The results revealed that the particle size of the wheat straw ash specimens significantly reduced and specific surface area enhanced when ground with a combination of both milling techniques. Cement composites made with this type of ash demonstrated improved mechanical and physical properties, accelerated hydration reaction at the early ages, reduce calcium hydroxide content at the later ages, and densified microstructure.

scholarly journals PSXI-5 Effect of increasing feed intake during late gestation on piglet birth weight and weaning weight of low backfat thickness sows

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 387-388
Author(s):  
Yuanfei Zhou ◽  
Zuhong Liu ◽  
Jian Peng
Keyword(s):  
Birth Weight ◽  
Feed Intake ◽  
Energy Requirement ◽  
Body Weight Loss ◽  
Late Gestation ◽  
Backfat Thickness ◽  
Large White ◽  
Weaning Weight ◽  
Weight Variation ◽  
High Feed

Abstract This study investigated the effect of feed intake during late gestation on piglet birth weight and weaning weight of sows with the low backfat thickness (BF) at gestation 90 d. A total of 397 crossbred Landrance × Large White sows according to feed intakes were randomly allotted to three groups 2.8 kg/d (the energy requirement for sow maintenance), 3.6 kg/d and 4.0 kg/d from day 90 to day 110 of gestation. Sows were weighed and measured BF at 90 d and at 110 d of gestation and at weaning. Piglet performance at parturition and at weaning and wean-to-estrus of sows were recorded. Although sows had a tendency to increase BF at gestation 110 d (P = 0.09) and had more BF gain during late gestation with higher feed intake (P &lt; 0.01), there was no evidence for differences in piglet birth weight, within-litter birth weight variation and weak piglet rate, and the number of total born, born alive and stillborn. During lactation, sows fed with high feed intake in late gestation increased body weight loss (P &lt; 0.01). And no differences were observed in piglet performance at weaning and wean-to-estrus interval of sows. In conclusion, during late gestation, sows fed with feed intake more than energy requirement for maintenance had no effect on piglet birth weight or weaning weight.

scholarly journals Feeding forages with reduced particle size in a total mixed ration improves feed intake, total-tract digestibility, and performance of organic dairy cows

2019 ◽  
Vol 102 (10) ◽  
pp. 8839-8849 ◽  
Author(s):  
Andreas Haselmann ◽  
Katharina Zehetgruber ◽  
Birgit Fuerst-Waltl ◽  
Werner Zollitsch ◽  
Wilhelm Knaus ◽  
...  
Keyword(s):  
Particle Size ◽  
Dairy Cows ◽  
Feed Intake ◽  
Total Mixed Ration ◽  
Organic Dairy ◽  
And Performance
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