scholarly journals Dry matter intake and feed efficiency profiles of 3 genotypes of Holstein-Friesian within pasture-based systems of milk production

2010 ◽  
Vol 93 (9) ◽  
pp. 4318-4331 ◽  
Author(s):  
J. Coleman ◽  
D.P. Berry ◽  
K.M. Pierce ◽  
A. Brennan ◽  
B. Horan
Keyword(s):  
Milk Production ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Holstein Friesian

scholarly journals Intake of Tifton 85 chopped hay have positive effects on protein digestibility, and milk production and composition of Lacaune sheep

2020 ◽  
Vol 9 (8) ◽  
pp. e347985005
Author(s):  
Alexandre Bernardi ◽  
Antonio Waldimir Leopoldino da Silva ◽  
Catia Capeletto ◽  
Felipe Junior Portela da Silva ◽  
Renata Cristina Defiltro ◽  
...  
Keyword(s):  
Milk Production ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Protein Concentration ◽  
Protein Digestibility ◽  
Dry Matter Intake ◽  
Serum Concentrations ◽  
Positive Effects ◽  
Feed Digestibility ◽  
D 12

This study compared the effects of unchopped and chopped hay on milk production and composition, feed digestibility, and physiology of Lacaune sheep. Eighteen ewes were stratified by parity (two or three), days of lactation (60 ± 3.7 days), and milk production (1.04 L/ewe/day), and were randomly assigned to 1 of 2 treatments: 1) Unchopped or 2) Chopped Tifton 85 hay. Corn silage and concentrate were also provided. Chopped hay ewes gave lower (P≤0.01) dry matter intake and greater (P=0.02) crude protein digestibility. No effects of treatment were detected (P≥0.38) for the digestibility of dry matter, or of neutral and acid detergent fibers. Chopped hay ewes had greater (P≤0.01) milk production (d 7 and d 12), lactation persistence, and feed efficiency. Ewes eating chopped hay had greater (P=0.03) protein concentration in their milk. However, there were no effects of treatment × day and treatments (P≥0.16) for concentrations of fat, lactose, minerals, deffated dry extract, or density. Ewes eating chopped hay presented lower (P<0.01) serum concentrations of urea and tended to have lower (P=0.10) serum concentrations of glucose only on d 12. However, there were no effects of treatment × day and treatments (P≥0.16) for serum concentrations of total protein, albumin, globulin, triglycerides, or cholesterol. These data suggest that chopped hay promotes lower dry matter intake and serum concentrations of glucose and urea, but improves milk production, lactation persistence, feed efficiency, and protein concentration.

scholarly journals Evaluation of rehydrated corn grain silage with okara or soybean inclusion in the performance of lactating cows

2020 ◽  
Vol 41 (6) ◽  
pp. 2747-2758
Author(s):  
Tamara Tais Tres ◽  
◽  
Clóves Cabreira Jobim ◽  
Robson Marcelo Rossi ◽  
Antonio Vinicius Iank Bueno ◽  
...  
Keyword(s):  
Milk Production ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Latin Square ◽  
Nutrient Digestibility ◽  
Corn Silage ◽  
Dry Matter Intake ◽  
Lactating Cows ◽  
Corn Grain ◽  
Corn Grains

This study aimed to evaluate dry matter intake, nutrient digestibility, milk production and composition, and feed efficiency of cows fed corn grain silages with okara or raw soybean inclusion. Six Holstein cows were distributed in a double Latin square and arranged in the following treatments: concentrate formulated based on corn grain silage with 30% okara inclusion; concentrate of corn grain silage with 20% raw soybean inclusion, and concentrate based on dry corn grains. Statistical analysis was performed using Bayesian inference. Diets formulated with silages reduced dry matter intake compared to the diet of concentrate based on dry grains. High digestibility of DM, OM, NFC, and EE was observed for diets with silage inclusion. Milk presented an increase in CLA for the diet of corn grain silage diet with soybean inclusion. Rehydrated grain corn silage with soybean or okara inclusion reduced dry matter intake and increased nutrient digestibility, maintaining the same milk production, which demonstrates the higher efficiency of these diets.

scholarly journals INCLUSION OF PROTECTED FAT IN DIETS ON THE MILK PRODUCTION AND COMPOSITION OF SAANEN GOATS

2015 ◽  
Vol 39 (2) ◽  
pp. 164-172 ◽  
Author(s):  
Bruna Susan de Labio Molina ◽  
Claudete Regina Alcalde ◽  
Bruna Hygino ◽  
Sérgio Mangano de Almeida Santos ◽  
Ludmila Couto Gomes ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Milk Production ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Latin Square ◽  
Milk Composition ◽  
Dry Matter Intake ◽  
Milk Fatty Acid ◽  
Maximum Point ◽  
Milk Samples

According on the fat source included in the diets for goats, the milk production can be increased and milk fatty acid composition can be improved. This study was conducted to evaluate the inclusion of protected fat (CSFA - calcium salts of fatty acids) in the diets of lactating Saanen goats on milk production and composition. Five Saanen goats (63.23 ± 9.08 kg body weight and 105 ± 3 days of lactation) were distributed in a Latin square design (5 × 5) with five diets: control (without the addition of CSFA) and the other diets with: 6.25, 12.50, 18.75 and 25.0 g CSFA per kg dry matter (g/kg DM), respectively. Dry matter intake (DMI) and milk production (MP) were evaluated. Milk samples were collected to determine milk composition and fatty acid profile. Feed efficiency (FE) was estimated. The supplementation of CSFA up to 25 g/kg DM did not influence the DMI, MP and FE. Milk components production (g/d) was not influenced by the inclusion CSFA in the diet; however, there was a linear reduction of 0.87 g protein per kg of milk for each 1% CSFA included in the diet. The concentration of linolenic acid (18:3n-3) in milk was improved with a maximum point of 24 g of CSFA per kg DM. CSFA can be included in the diets of lactating Saanen goats up to 25 g/kg DM with no interference on DMI and MP.

scholarly journals Effects of Capsicum and Propyl-Propane Thiosulfonate on Rumen Fermentation, Digestion, and Milk Production and Composition in Dairy Cows

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 859
Author(s):  
Andreas Foskolos ◽  
Alfred Ferret ◽  
Adriana Siurana ◽  
Lorena Castillejos ◽  
Sergio Calsamiglia
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Control Diet ◽  
Latin Square ◽  
Rumen Fermentation ◽  
Feed Utilization ◽  
Dry Matter Intake ◽  
Lactating Dairy Cattle

Essential oils may affect rumen fermentation, nutrient digestion, and milk production and composition. The objective of this study was to test the effects of capsicum oleoresin (CAP) and propyl-propane thiosulfonate (PTSO) on rumen fermentation, total tract digestibility, and milk yield and composition in lactating dairy cattle. Six lactating Holstein cows (averaging (mean ± SD) 130 ± 40 days in milk and 723 ± 55 kg of body weight) fitted with rumen cannulae were used in a duplicated 3 × 3 Latin square design. Treatments were: a control diet (CTR), the CTR diet with the addition of 500 mg/d/cow of CAP, and the CTR diet with the addition of 250 mg/d/cow of PTSO. Dry matter intake (DMI) averaged 20.7 kg/d with a tendency towards higher intake in cows fed CAP and lower in those fed PTSO (p = 0.08). Milk yield averaged 31.8 kg/d with no difference among treatments. However, feed efficiency was higher in PTSO supplemented cows compared with CTR (1.65 and 1.41 kg of milk yield/kg of DMI, respectively; p < 0.01). At the doses used in this experiment, CAP and PTSO failed to demonstrate any effects on rumen fermentation, but PTSO increased the efficiency of feed utilization to produce milk.

scholarly journals Influence of Residual Feed Intake and Cow Age on Dry Matter Intake Post-Weaning and Peak Lactation of Black Angus Cows

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1822
Author(s):  
Cory T. Parsons ◽  
Julia M. Dafoe ◽  
Samuel A. Wyffels ◽  
Timothy DelCurto ◽  
Darrin L. Boss
Keyword(s):  
Milk Production ◽  
Feed Intake ◽  
Dry Matter ◽  
Free Choice ◽  
Residual Feed Intake ◽  
Beef Cows ◽  
Age Effect ◽  
Dry Matter Intake ◽  
Intake Rate ◽  
Two Stages

We evaluated heifer post-weaning residual feed intake (RFI) classification and cow age on dry matter intake (DMI) at two stages of production. Fifty-nine non-lactating, pregnant, (Study 1) and fifty-four lactating, non-pregnant (Study 2) commercial black Angus beef cows were grouped by age and RFI. Free-choice, hay pellets were fed in a GrowSafe feeding system. In Study 1, cow DMI (kg/d) and intake rate (g/min) displayed a cow age effect (p < 0.01) with an increase in DMI and intake rate with increasing cow age. In Study 2, cow DMI (kg/d) and intake rate (g/min) displayed a cow age effect (p < 0.02) with an increase in DMI and intake rate with increasing cow age. Milk production displayed a cow age × RFI interaction (p < 0.01) where both 5–6-year-old and 8–9-year-old low RFI cows produced more milk than high RFI cows. For both studies, intake and intake behavior were not influenced by RFI (p ≥ 0.16) or cow age × RFI interaction (p ≥ 0.21). In summary, heifer’s post-weaning RFI had minimal effects on beef cattle DMI or intake behavior, however, some differences were observed in milk production.

HIGH MOISTURE GROUND EAR CORN, HIGH MOISTURE BARLEY OR SODIUM HYDROXIDE TREATED BARLEY FOR LACTATING COWS: MILK PRODUCTION AND RATION UTILIZATION

1983 ◽  
Vol 63 (1) ◽  
pp. 155-162 ◽  
Author(s):  
L. KUNG Jr. ◽  
B. W. JESSE ◽  
J. W. THOMAS ◽  
J. T. HUBER ◽  
R. S. EMERY
Keyword(s):  
Sodium Hydroxide ◽  
Key Words ◽  
Milk Production ◽  
Dry Matter ◽  
Milk Composition ◽  
Dry Matter Intake ◽  
High Moisture ◽  
Acid Detergent Fiber ◽  
Lactating Cows ◽  
Fecal Ph

Whole barley was treated with sodium hydroxide (NaOH) in laboratory trials. Dry matter disappearance from nylon bags in the rumen of whole barley treated with 2.5, 3.5, or 4.9% NaOH for 30 h was 59.6, 72.4, and 93.0%, respectively, compared with 82.2% for untreated ground barley. In a subsequent lactation trial, 24 Holstein cows (eight per treatment) were fed high moisture ground ear corn, high moisture rolled barley or high moisture whole barley treated with 3.5% NaOH. Milk persistencies tended to be greater for cows fed high moisture rolled barley, next for ground ear corn and least for NaOH-treated barley. Milk composition was similar for all treatments. Dry matter intake was greatest for cows fed ground ear corn and lower for those fed the barley diets. Alpha-linked glucose and pH of feces were similar for cows fed ground ear corn and high moisture rolled barley diets, but fecal pH was lower and alpha-linked glucose concentrations three times greater for NaOH-treated barley. Digestibility percents of dry matter, acid detergent fiber and nitrogen were 61.4, 25.3, 64.7 for ground ear corn; 64.4, 38.0, 67.1 for high moisture rolled barley; and 56.8, 43.2, 54.8 for NaOH-treated barley, respectively. Rumen grain turnover estimated by excretion of ytterbium in feces was greatest for NaOH-treated barley (9.09%/h), intermediate for ground ear corn (6.10%/h) and lowest for high moisture rolled barley (4.93%/h). Key words: Dairy, sodium hydroxide, high moisture grains

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