scholarly journals OreganoExtract Added into the Diet of Dairy Heifers Changes Feeding Behavior and Concentrate Intake

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Giovani Jacob Kolling ◽  
Dejani Maíra Panazzolo ◽  
Alexandre Mossate Gabbi ◽  
Marcelo Tempel Stumpf ◽  
Marcel Batista dos Passos ◽  
...  
Keyword(s):  
Feeding Behavior ◽  
Dry Matter ◽  
Statistical Difference ◽  
Dry Matter Intake ◽  
Control Group ◽  
Latency Time ◽  
Negative Effects ◽  
Dairy Heifers ◽  
And Performance ◽  
Saliva Production

This experiment aimed to describe the effects ofOreganoextract (OE) inclusion into the concentrate fed to dairy heifers on physiological parameters, feeding behavior, intake, and performance. Thirty-two Holstein heifers were randomly distributed into four treatments: C = control, without addition of OE; OE2.5 = 2.5 g; OE5.0 = 5.0 g and OE7.5 = 7.5 g ofOreganoextract per heifer/day. Feeding behavior and concentrate intake were assessed individually every day and total dry matter intake (DMI) was determined on the last week of the trial. Compared to control group, OE7.5 reduced by 32% the latency time to approach the feed bunk but increased by 6% the time spent eating the concentrate. Each inclusion of 2.5 grams of OE into the concentrate increased the occurrence of postingestive licking the feed bunk with abundant saliva production 1.2 times (P<0.01) and tended to increase the occurrence of sneeze events 1.2 times (P<0.10). No statistical difference was detected between treatments for total DMI, but concentrate DMI was 9% lower for OE7.5 when compared to control and OE2.5. The inclusion of 7.5 grams/day of OE causes small but negative effects in feeding behavior and concentrate intake, without change on total dry matter intake.

scholarly journals Nutritional, behavioral and performance parameters of F1 Holstein x Zebu cows at different lactation stages

2020 ◽  
Vol 72 (4) ◽  
pp. 1469-1478
Author(s):  
P.F. Santana ◽  
V.R. Rocha Júnior ◽  
F.P. Monção ◽  
J.R.M. Ruas ◽  
L.A. Borges ◽  
...  
Keyword(s):  
Body Weight ◽  
Feeding Behavior ◽  
Milk Yield ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Early Lactation ◽  
Randomized Design ◽  
And Performance ◽  
Zebu Cows

ABSTRACT The objective of this study was to evaluate the different lactation stages of F1 Holstein x Zebu cows on intake and digestibility of nutrients, nitrogen use efficiency, feeding behavior and performance. Thirty-six F1 Holstein × Zebu cows with initial body weight (BW) of 482±43kg were used. The early, mid and late lactation stages were characterized after 50±13, 111.5±11.75 and 183.0±17.5 days in milk, respectively. A completely randomized design with three lactation stages and 12 cows in each treatment group was used. Dry matter intake (P=0.01) was higher in late lactation. Milk yield (P<0.01) was 24.17% higher in early lactation than in other stages. Body weight was lowest in mid-lactation cows (465.63kg; P<0.01). The feed efficiency was 23.36% higher in early lactation than in other stages (0.82kg of milk/kg of DM). F1 Holstein x Zebu cows have increased dry matter intake in late lactation. Milk yield and feed efficiency in early lactation were benefited by changes in feeding behavior, such as increased rumination time.

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.

scholarly journals Evaluation of Equations to Predict Dry Matter Intake of Dairy Heifers

2008 ◽  
Vol 91 (9) ◽  
pp. 3699-3709 ◽  
Author(s):  
P.C. Hoffman ◽  
K.A. Weigel ◽  
R.M. Wernberg
Keyword(s):  
Dry Matter ◽  
Dry Matter Intake ◽  
Dairy Heifers

scholarly journals Non-structural carbohydrates in the nutrition of high-yielding dairy cows during a transition period

2010 ◽  
Vol 55 (No. 11) ◽  
pp. 468-478 ◽  
Author(s):  
K. Poláková ◽  
V. Kudrna ◽  
A. Kodeš ◽  
B. Hučko ◽  
Z. Mudřík
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Body Condition ◽  
Dry Matter ◽  
Rumen Fluid ◽  
Live Weight ◽  
Dry Matter Intake ◽  
Control Group ◽  
Maize Starch ◽  
Milk Performance

The main aim of this study was to investigate experimentally the effect of different composition of non-structural carbohydrates (NFC) in prepartum feed rations administered to high-yielding dairy cows at a high concentration of NFC in the diet on dry matter intake both before and after parturition and on subsequent milk performance, body condition and physiological traits of rumen fluid and blood. Thirty-six high-yielding dairy cows were allocated into one of the three well-balanced groups (K, O, and C), and each group received a different feeding rations. Feeding rations differed in non-structural carbohydrate (NFC) structure. The "K" (control) group received a feeding ration with NFC in the form of maize starch in particular, while the feeding rations of the other two (experimental) groups contained either (besides maize starch) saccharose from dried sugar beet (the "O" group) or a dominant amount of NFC was in the form of saccharose (the "C" group). After calving, all dairy cows were given the same feeding ration from the first day after parturition. The experiment was conducted for 21 days before and 50 days after calving. FR in the form of total mixed ration was offered ad libitum. Dry matter intake, milk performance, body condition, live weight, and blood and rumen parameters were recorded for the duration of the experiment. Average daily dry matter intake before calving was highest in the "K" group (14.32 kg per head). Differences among groups were statistically significant (P &lt; 0.05). Prepartum dry matter consumption dropped as the rate of saccharose in the diet of cows increased. Dry matter consumption levelled off after calving. Milk yield was also highest in the "K" group (43.71 kg/head/day), but fatness of milk and thus the production of fat corrected milk were lowest in this group. The highest milk fat content (4.10%) and fat corrected milk production (44.03 kg/head/day) were recorded in the "C" group, whereas the highest milk protein concentration was found in the milk of the "O" group. The composition of NFC affected dry matter intake before parturition, but these concentrations did not significantly affect dry matter intake, milk yield, milk composition, live weight, body condition or blood serum and rumen fluid parameters after calving

scholarly journals Dry matter intake observed and predicted by the nutritional systems NRC and BR-Corte for feedlot nelore heifers fed with human feed products

2019 ◽  
Vol 40 (6Supl2) ◽  
pp. 3157
Author(s):  
Simone Pedro da Silva ◽  
Carina Ubirajara de Faria ◽  
Ana Caroline Rodrigues da Cunha ◽  
Aline Maria Soares Ferreira ◽  
Jean Marcos Castro Paula ◽  
...  
Keyword(s):  
Dry Matter ◽  
Control Diet ◽  
Dry Matter Intake ◽  
Daily Weight Gain ◽  
Control Treatment ◽  
Control Group ◽  
Human Diet ◽  
Lower Growth ◽  
The Difference ◽  
Average Body

We aimed to evaluate the effects of using a concentrated ration containing industrialised human food on the productive parameters of Nellore heifers in confinement, in addition to comparing the dry matter intake (DMI) observed with that predicted by the nutritional systems BR-Corte and NRC, in order to determine which system makes the most accurate predictions for heifers of the breed Nelore in feedlots. Twenty-four Nelore heifers, with an average age of 24 months and average body weight (BW) of 350 kg, were used over the 70 days of the experiment. They were randomly assigned to two treatments and housed in partially covered stalls equipped with an automatic Growsafe® Systems feeding system. Animals in the control group (CONT) received a concentrated ration containing ground corn, soybean meal, urea, and mineral nucleus. In the residual treatment (RES) group, heifers received concentrated feed containing products from the human diet. The difference between the treatments was the concentrated ration; in the control treatment, the energy source used was maize, whereas in the residue treatment, the energy sources were corn chips, coconut candies, and ground coffee. Corn silage was included as forage for both treatments. The forage:concentrate (F:C) ratio was 84:16. The predicted intake was estimated according to the nutritional systems NRC (2000, 2016) and BR-Corte (VALADARES FILHO et al., 2010, 2016). The average DMI observed of the heifers was 7.46 kg day-1. Heifers fed with human feed residue had a higher dry matter intake (DMI) and higher ether extract intake (EEI) than animals fed with the control feed. In addition, heifers that received human feed products showed a lower average daily weight gain (DWG) of 1.08 kg day-1 than animals fed the control treatment with an average DWG of 1.24 kg day-1. The predicted dry matter intake by NRC 2000 was an overestimate by 9.78 % and by BR-Corte 2010 was an overestimate by 5.5 %. The NRC 2016 and BR-Corte 2016 underestimated the intake of heifers by 18.9 % and 7.1 %, respectively. It was concluded that growing Nelore heifers fed with human feed products, with a F:C ratio of 84:16, present a higher DMI and lower growth performance and feed efficiency than heifers fed the control diet. The DMI predicting models for Nellore heifers proposed by BR-Corte are more adequate than the NRC models.

scholarly journals Growth performance and safety of meat from cattle feedlot finished with monensin in the ration

2018 ◽  
Vol 39 (2) ◽  
pp. 697 ◽  
Author(s):  
Mikael Neumann ◽  
Robson Kyoshi Ueno ◽  
Julio Cezar Heker Junior ◽  
Eloize Jaqueline Askel ◽  
André Martins de Souza ◽  
...  
Keyword(s):  
Dry Matter ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Corn Silage ◽  
Dry Matter Intake ◽  
Control Group ◽  
Productive Performance ◽  
Feed Conversion ◽  
Edible Tissues ◽  
Fat Thickness

Monensin is an ionophore antibiotic, the inclusion of which in the feed of beef cattle favors the best use of feed nutrients, via ruminal modulation. However, there are concerns regarding the residence of residues in the carcass from metabolism of monensin. The objective of this study was to evaluate the productive performance, carcass characteristics, serum parameters, tissue residual depletion and economic benefit of finishing of young bulls in confinement with monensin in the ration. Thirty-six animals were confined, and given 50% corn silage feed and 50% more concentrated feed. The experimental design was completely randomized, with two treatments (with or without monensin) and 10 replicates for the control group and eight for the monensin group. The use of monensin reduced the dry matter intake in relation to live weight (2.36% vs 2.55%), and improved feed conversion (8.61 vs 10.06 kg kg?1); the animals presented higher live weight (511 vs 494 kg), higher warm carcass weight (285 vs 272 kg) and an increase in fat thickness (4.97 vs 4.25 mm) compared to control animals. These increases in performance gave higher economic results, with a profit margin of R$ 122.84 per animal. A waiting period of 16 h before slaughter resulted in monensin concentrations below 0.25 µg kg?1 in edible organs and tissues, values well below those permitted by legislation. The use of monensin for young bulls in confinement promoted improvements in productive and economic performance, without leaving residues in edible tissues.

scholarly journals A simple and fast sampling method for chemical analyses and densitometry of bones through rib biopsies in cattle

2017 ◽  
Vol 37 (1) ◽  
pp. 31-35 ◽  
Author(s):  
Pedro Malafaia ◽  
Yury T.G. Salcedo ◽  
Ricardo A.R. Uscategui ◽  
Vinícius C. Souza ◽  
Diogo Fleury A. Costa ◽  
...  
Keyword(s):  
Weight Gain ◽  
Chemical Analysis ◽  
Dry Matter ◽  
Phosphorus Deficiency ◽  
Postoperative Recovery ◽  
Dry Matter Intake ◽  
Daily Weight Gain ◽  
Control Group ◽  
Average Daily Weight Gain ◽  
Simple Method

ABSTRACT: We developed and evaluated a fast and simple method to obtain suitable bone samples for densitometry and chemical analysis through biopsies of the 12th rib of cattle. The postoperative recovery, dry matter intake (DMI) and average daily weight gain (ADG) was evaluated in 36 Nellore steers, nine of which were randomly selected for the control group and 27 others were rib biopsied. Every 30 days, rib biopsy was performed in nine steers, using a corded-electric pistol-grip drill coupled with a hole saw of a 3mm diameter pilot drill bit. This rib biopsy technique provided a suitable sample obtained in a fast way and allowed the surgeon to work alone with the animal slightly sedated and restrained in the crush. Dry matter intake (DMI) was not affected in biopsied animals. At the end of the experimental period (116 days) the average daily weight gain (ADG) was similar in the steers biopsied or not. The described method provided rib samples from cattle suitable for densitometry and chemical analysis of bone tissue without effects on health and performance. This information could greatly increase the accuracy for the diagnosis of phosphorus deficiency in cattle raised on pasture and allow the evaluation of bone metabolism in experimental animals.

scholarly journals Effect of storage of wet brewer’s grains with incremental levels of salt on apparent total-tract nutrient digestibility and purine derivative excretion in dairy heifers

2020 ◽  
Author(s):  
Eric Hatungimana ◽  
Tess C Stahl ◽  
Peter S Erickson
Keyword(s):  
Dry Matter ◽  
Latin Square ◽  
Nutrient Digestibility ◽  
Metabolizable Energy ◽  
Dry Matter Intake ◽  
Linear Quadratic ◽  
Purine Derivative ◽  
Dairy Heifers ◽  
Collection Period ◽  
Fat Digestibility

Abstract Objectives of this study were to evaluate apparent total-tract nutrient digestibility and purine derivative (PD) excretion in dairy heifers limit-fed diets containing wet brewer’s grains (WBG) treated with salt. A 12-wk replicated 4×4 Latin square was conducted using 8 Holstein heifers of 224.5 ± 19.4 d of age, and body weight (BW) of 219.2 ± 28.1 kg (mean ± SD). Fresh WBG were treated with 0%, 0.8%, 1.6%, and 2.4% salt and stored for 4 d before being fed. Salt was added either to the WBG or separately to equalize the amount of salt in the diet. The diet contained 9% grass silage, 47% corn silage, 19% corn meal, 17.6% WBG and salt, 2% soybean meal (SBM), and 3% mineral mix. Diets were formulated to be limit-fed at 2.15% of BW, provide 14% crude protein (CP) and 2.27 Mcal metabolizable energy (ME)/kg of dry matter (DM). Heifers were adapted to diets for 14 d followed by a 7-d collection period. Dry matter intake (DMI) was recorded daily during the collection week while BW was recorded once a week. Urine and fecal samples were collected during the last 4 d of the collection period. Acid insoluble ash was used as an internal marker to determine apparent nutrient digestibility. Weight loss of WBG during storage was determined from d 1 to d 11 and initial and final yeast and mold counts were determined. Final yeast counts were similar among treatments while final mold counts tended to be lesser (P = 0.07) for the 0.8 and 1.6% salt treatments. Urinary volume was similar among treatments while allantoin (P = 0.14), and uric acid (P &lt; 0.01) and total PD excretion tended to increase (P = 0.13) quadratically. Dry matter intake was varied by treatment (linear, quadratic, and cubic effects P &lt; 0.01). Heifers fed the 0.8% treatment had the least DMI. Non-fiber carbohydrate (NFC) digestibility linearly decreased (P &lt; 0.04) as salt increased. Digestibilities of DM, and organic matter (OM), tended to decrease (P &lt; 0.10) with increasing levels of salt added to WBG. Fat digestibility was quadratic with the greatest value for the 1.6% treatment. Treating WBG with salt reduced its deterioration based on lesser mold counts for the 0.8 and 1.6% treatments. These treatments had resulted in greater fat digestibility and tended to have increased PD excretion suggesting improved microbial protein synthesis.

Effect of carnitine supplementation on growth performance and economics in pigs fed high fat diet

2017 ◽  
Author(s):  
Arathy Saseendran ◽  
K. Ally ◽  
K. George Sherin K ◽  
A. P. Usha
Keyword(s):  
High Fat Diet ◽  
Dry Matter ◽  
Growth Parameters ◽  
Primary Response ◽  
Dry Matter Intake ◽  
Control Group ◽  
High Fat ◽  
Weaned Piglets ◽  
Dietary Treatments ◽  
The Cost

Thirty two weaned piglets were randomly divided into three groups allotted to the three dietary treatments, T1- control ration, T2- control ration plus 5 per cent fat and T3- T2 plus 150 mg/kg carnitine. The total dry matter intake, fortnightly body weight of each individual animal and economics were recorded. There was a significant improvement (P>0.01; and 0.05) observed for pigs under supplemented group (T2 and T3) than that of control group (T1) with regards to all growth parameters studied during growing phase than finisher phase and overall period. The cost of feed per kg weight gain during the overall period was found to be comparable among treatments (T1, T2, and T3). It may be concluded that primary response of pigs to dietary supplements were more during growing stage than finisher and inclusion of 5 % fat would be beneficial for improving growth in weaned LWY piglets.

scholarly journals THE EFFECT OF MOISTURE CONTENT OF FORAGE STORED IN POLYVINYL SILOS ON INTAKE AND PERFORMANCE OF DAIRY COWS

1964 ◽  
Vol 44 (2) ◽  
pp. 125-131 ◽  
Author(s):  
V. S. Logan ◽  
P. S. Haydon
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Milk Composition ◽  
Matter Content ◽  
Dry Matter Intake ◽  
Dry Matter Content ◽  
Forage Intake ◽  
Silage Quality ◽  
And Performance ◽  
Gas Tight

Legume–grass forage was ensiled two seasons in 25-ton polyvinyl-encased stacks at dry matter (D.M.) levels of 22 to 37% or stored as field-cured hay. The polyvinyl sleeve coverings provided initial gas-tight conditions. High losses occurred in the high D.M. (32 to 37%) silage during the feeding-out period. Silage quality, as indicated by volatile fatty acid ratios, proximate principles, and digestibility coefficients, was not significantly influenced by D.M. content. When cows were fed the lower D.M. (22 to 29%) silages and hay, forage intake was inversely related to its dry matter content. Intake of high D.M. silage appeared abnormally low. Milk yields appeared to be more consistently influenced by small variations in grain intake than forage dry matter intake through both trials. Milk yields from silages were greater than from hay per unit of D.M. intake. Moisture content of forage had no significant effect on milk composition as indicated by percentage of butterfat, solids-not-fat, or protein.

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