Digestion characteristics of two forms of preserved lucerne forage fed to mature horses

2012 ◽  
Vol 1 ◽  
Author(s):  
L. A. Waldron ◽  
D. G. Thomas ◽  
I. Pryor
Keyword(s):  
New Zealand ◽  
Energy Intake ◽  
Water Intake ◽  
Reference Values ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Small Scale ◽  
Digestible Energy ◽  
Thoroughbred Horses ◽  
Nutritional Benefits

SummaryA trial was conducted, using 12 mature thoroughbred horses as a cross-over design, to compare the water and energy intake and the digestibility of dry lucerne chaff (LC) against a controlled fermented lucerne (CFL) product (HNF Fiber®; Fiber Fresh Feeds Ltd, Reporoa, New Zealand). Significant (P < 0.05) increases in dry matter intake (20%), energy intake (20%), retained energy (32%) and digestible energy (22%) were observed for the CFL compared to the LC. In a concurrent small scale study within the trial, numeric improvements in water intake (18%) for the CFL were recorded. The results demonstrated that the standard reference values underestimate the digestibility and nutritional contribution made by CFL when fed to horses, and that this type of forage has increased nutritional benefits.

The effect of concentrate, barley and dried grass on the voluntary intake of different silages

1977 ◽  
Vol 24 (3) ◽  
pp. 393-400
Author(s):  
W. A. McIlmoyle ◽  
J. C. Murdoch
Keyword(s):  
Energy Intake ◽  
Dry Matter ◽  
Live Weight ◽  
Dry Matter Intake ◽  
Digestible Energy ◽  
Voluntary Intake ◽  
Barley Silage

SUMMARYIn two experiments with steers (initial live weight 339 kg) the effect of dried grass, barley and concentrates on the intake of ‘wilted’ and unwilted grass and whole-crop barley silage was investigated.In both experiments there was no significant effect of silage type on silage dry-matter intake when given alone or with a supplement. In Experiment 1, supplementation significantly reduced (P<0·05) the intake of silage dry matter (DM) from unwilted and whole-crop barley silage. Total DM intake was significantly higher (P<0·05) for the ‘wilted’ silage diet than for either the unwilted or whole-crop barley silage diets. In Experiment 2, supplementation had no significant effect on total DM intake. Digestible energy intake was significantly higher (P < 0·05) from whole-crop barley silage supplemented with concentrate rather than barley or dried grass and was significantly lower (P<0·05) from unwilted silage diets (P<0·05) when dried grass rather than concentrate or barley was given. In the second experiment, ration digestibility and rate of passage of digesta results are reported.

Methane emissions from young and mature dairy cattle

2016 ◽  
Vol 56 (11) ◽  
pp. 1897 ◽  
Author(s):  
C. A. Ramírez-Restrepo ◽  
H. Clark ◽  
S. Muetzel
Keyword(s):  
New Zealand ◽  
Emission Factor ◽  
Dry Matter ◽  
Sulfur Hexafluoride ◽  
Dry Matter Intake ◽  
Tracer Technique ◽  
Ch4 Emissions ◽  
Dairy Heifers ◽  
Age Related ◽  
The Mean

Daily methane (CH4) emissions (g) and CH4 yield (g/kg dry matter intake) were measured from 10 dairy heifers (<1 year old) and nine rumen-fistulated cows (>6 years old) fed ryegrass (Lolium perenne) chaffage indoors. The CH4 emissions were estimated using the sulfur hexafluoride tracer technique in four ~5-day periods beginning in June 2008 and repeated 4, 6 and 7 months later. Respiratory chambers were used in four ~13-day periods beginning in November 2008 and repeated 2, 5 and 6 months later. Third and fourth sulfur hexafluoride tracer periods overlapped with the first and second chamber measurement periods, respectively. Averaged over the four measurement periods the CH4 yields determined using both techniques were similar for heifers and cows. The mean CH4 yield estimated by the sulfur hexafluoride tracer technique was 25.3 ± 0.52 for heifers and 24.1 ± 0.55 for mature cows, whereas the mean CH4 yield measured in respiratory chambers was 23.7 ± 0.66 for heifers and 23.6 ± 0.66 for mature cows. Averaged over the eight measurements irrespective of technique, CH4 yields for heifers (24.5 ± 0.42) and cows (23.8 ± 0.43) were similar. There was also no difference between CH4 methods for assessing CH4 yield during the overlapping measurement periods. It was concluded that no consistent differences in CH4 yield existed between heifers and mature cows. Therefore, we do not recommend adoption of an age-related emission factor for cattle in the national inventory calculations for New Zealand.

PSXIV-9 Predicting dry matter intake in beef cattle with water intake and other variables

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 478-478
Author(s):  
Matthew E Wilson ◽  
Kevin Shaffer ◽  
Shane Plum ◽  
Kevin Garossino ◽  
Nicky Lansink ◽  
...  
Keyword(s):  
Body Weight ◽  
Water Intake ◽  
Dry Matter ◽  
Predictive Accuracy ◽  
Dry Matter Intake ◽  
Animal Performance ◽  
Performance Variables ◽  
Visit Frequency ◽  
Study Results ◽  
Full Body

Abstract Technology that facilitates estimation of individual animal intake rates in group-housed settings will result in improvements in animal production and management efficiency. Estimating intake in pasture settings may benefit from models that use other variables as proxies. Relationships among dry matter intake (DMI), animal performance variables, and environmental variables to model DMI were investigated. 202 animals were studied in a drylot setting (153 bulls for 85 days and 55 steers for 55 days) using VYTELLE SENSETM In-Pen-Weighing and Feed-Intake nodes. A machine learning model was calibrated using: DMI, sex, age, full body weight, ADG, water intake, water visit frequency and duration. DMI was positively related to full body weight (r = 0.39, P &lt; 0.001), water intake (r=0.23, P &lt; 0.001), and ADG (r=0.18, P &lt; 0.001). In addition, DMI had significant but weak correlations with water visit frequency (r=0.031, P &lt; 0.001). DMI exhibited weak negative relationships with maximum air temperature (r=-0.094, P &lt; 0.001) maximum relative humidity (r=-0.056, P &lt; 0.001), net radiation (r=-0.040, P &lt; 0.001), and precipitation (r=-0.022, P &lt; 0.001). Weak positive relationships were observed between DMI and maximum wind speed (r=0.031, P &lt; 0.001) and direction (r=-0.022, P &lt; 0.001). The model was validated with resultant average RMSE of 1.06 kg for daily predicted DMI compared to measured daily DMI. In addition, when daily predicted DMI was averaged for each animal, the accuracy of model results improved with RMSE of 0.11 kg. Study results demonstrate that inclusion of water intake and animal performance variables improves predictive accuracy of DMI. Validating and refining the model used to predict DMI in drylots will facilitate future extrapolation to larger group field settings. Vytelle and its logo are trademarks of Vytelle, LLC.

scholarly journals Productive and economic performance of goats of different genetic groups

2018 ◽  
Vol 19 (4) ◽  
pp. 381-390 ◽  
Author(s):  
Ana Barros Oliveira ◽  
Wandrick Hauss Sousa ◽  
Flávio Gomes Oliveira ◽  
Felipe Queiroga Cartaxo ◽  
Edgard Cavalcante Pimenta Filho ◽  
...  
Keyword(s):  
Weight Gain ◽  
Water Intake ◽  
Economic Performance ◽  
Dry Matter ◽  
Profit Margin ◽  
Dry Matter Intake ◽  
Genetic Groups ◽  
Significant Difference ◽  
The Cost ◽  
Intake Water

SUMMARY This study aimed to evaluate the bio-economic performance in confinement crossbred goats from different genetic groups. Were used 30 goats, crossbred (F1) intact male, 10 goats Boer x SPRD (undefined breed), 10 x Savannah SPRD and 10 Oberhasli x SPRD, with an average weight of 15 kg and an average age of 100 days. The initial weight was evaluated, final body weight, average daily gain, total weight gain, dry matter intake, water intake, feed conversion and days on feed. As an economic indicator was calculated gross profit margin (MB), the average dry matter intake, the confinement period, the cost of each diet and the cost of vaccines and medicines. We used the 5% Tukey test for comparisons between treatment means. For the variables weight gain, dry matter intake, water intake and body condition score averages observed did not differ between the genetic groups. There was significant effect (P> 0.05) of genetic groups on days on feed. The biological performance of the goats finished in feedlot was not influenced by genetic group. In bioeconomic analysis was no significant difference (P> 0.05) between the evaluated racial groups. Gross profit margin was negative for the mestizos Pardo Alpine x SPRD. The cross between the Boer breed and without defined breed results in premature animals, reaching slaughter weights with reduced confinement period. In the feedlot finishing system crossbred Boer goats x SPRD showed better economic performance, providing greater profitability to the creator.

scholarly journals Intake, physiological parameters and behavior of Angus and Nellore bulls subjected to heat stress

2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4565 ◽  
Author(s):  
Ériton Egidio Lisboa Valente ◽  
Mario Luiz Chizzotti ◽  
Cristiane Viol Ribeiro de Oliveira ◽  
Matheus Castilho Galvão ◽  
Silas Sebastião Domingues ◽  
...  
Keyword(s):  
Heat Stress ◽  
Water Intake ◽  
Dry Matter ◽  
Daily Intake ◽  
High Heat ◽  
Dry Matter Intake ◽  
Effect Of Temperature ◽  
Period 2 ◽  
Humidity Index ◽  
And Behavior

<p>Genetics differences between breeds may determine the tolerance to high temperature, effect dry matter intake and consequently cattle performance. The effect of temperature and humidity index (THI) on diurnal, nocturnal and daily intake, water intake, physiologic parameters and behavior of Nellore (<em>B. indicus</em>) and Angus (<em>B. taurus</em>) bulls were evaluated. Eight Angus and eight Nellore young bulls (337±7.4 kg and 16 months of age) were allocated in two climate-controlled rooms for 32 days. In the period 1, all bulls were housed in thermoneutral conditions (TN, THI = 72.6) for 10 days. In period 2 (10 days), four Angus and four Nellore bulls were subjected to low heat stress (LHS, THI = 76.4) in daytime, and four Angus and four Nellore bulls were subjected to high heat stress (HHS, THI = 81.5) in daytime. The diurnal and daily dry matter intake (DMI) of Nellore were not affected (P&gt;0.05) by heat stress. However, Angus bulls decreased diurnal DMI by 24% and daily DMI decreased (P&lt;0.05) by 15% on HHS. In TN Angus bulls had higher (P&lt;0.05) daily DMI (36.2 g/kg of BW) than Nellore (29.1 g/kg of BW), but in HHS they had similar (P&gt;0.05) daily DMI (31.6 and 30.2 g/kg of BW, respectively). We observed an increase (P&lt;0.05) in respiratory frequency, but water intake was not affected (P&gt;0.05) by heat stress. The heart rate decreased (P&lt;0.05) with heat stress. No differences were found (P&gt;0.05) in feeding behavior. Therefore, THI stress threshold should distinct for Angus and Nellore bulls. The use of feed intake information may improve the prediction of thermic discomfort on specific climate condition. </p>

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