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Showing 1 to 20 of 32 for “"Fat yield"”.
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Optimization of dietary protein to energy level for commercial emu (Dromaius novaehollandiae) production to maximize fat yield
… diets to sub-adult emu birds for greater fat accretion. The research was done at African Emu Ranch in Muldersdrift, Gauteng. Twenty-six, four to five months old emu birds were reared to an average target weight of 30.72kg on a control diet containing 17% crude protein (CP). The birds were …
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Selection Indices Based on Milk and Fat Yield, Fat Per Cent, and Type Classification of Dairy Cattle
Made available in DSpace on 2014-12-05T23:07:49Z (GMT). No. of bitstreams: 1 0010553.pdf: 2934540 bytes, checksum: 71dd6cf747e2adf109ee4c455ce6abe4 (MD5) Previous issue date: 1954
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An electronic model for determining value and predicting sale price of Holstein cattle sold at public auction
… dam with many ancestors over 11,364 kg milk yield, 455 kg fat yield and 90 points final type score. Most significant cow factors were (1) cows with high type score, (2) old cows with increasing production, (3) cows from high milk and fat record families, and (4) cows with low milk and fat …
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Evaluation of optimum and near optimum pair selection methods for increasing predicted relative net income in Jersey cattle
… cows and 45 active AI sires. Predicted milk yield, fat yield, and 13 linear type traits of potential progeny were used to predict RNI/DPL of all potential progeny. Five methods of mate selection and pairing were evaluated for their effectiveness in choosing mates and the amount of computer …
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A Genome Scan for Quantitative Trait Loci in Dairy Cattle
… significance were identified for effects on milk fat percentage (BTA3), milk fat yield and percentage (BTA14) and overall type composite (BTA5). Additional marker/QTL effects with suggestive significance were found for front teat placement, dairy composite and body depth on BTA1, milk protein …
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Effect of rumen-protected methionine on placenta metabolism, animal performance, and immune-metabolism of dairy cows during the periparturient and early lactation periods
… in milk) MET increased intake by 1.7 kg/d, milk yield by 4.1 kg/d, fat yield by 0.17 kg/d, and milk protein yield by 0.20 kg/d. During the high-producing period (31-60 days in milk), cows fed MET increased intake by 1.45 kg/d, milk yield by 4.4 kg/d, fat yield by 0.19 kg/d, and milk protein yield …
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Evaluation of Corn Distillers Grains and Ruminally Protected Methionine and Lysine for Lactating Dairy Cows
… COG diets (28.7, 27.7, 29.4, 30.0 kg/d). Milk yield was improved with the COG diets (34.3, 34.0, 35.3, 36.7 kg/d) especially when COG diet was supplemented with RPML. Milk protein yield and percentage were improved by RPML. Milk fat yield and percentage were unaffected by diet. The only milk …
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Approaches for Developing and Implementing Precision Feeding Programs to Maximize Feed Efficiency
… After analyses, dry matter intake (DMI), milk yield (MY), milk fat yield, milk protein yield, feed efficiency, and activity were significantly affected by top dress (P < 0.001). These results suggest opportunity to use precision feeding to implement economically optimal ration recommendations …
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Canola Meal Replacing Dried Distillers Grains with Solubles in Diets for Lactating Dairy Cows
… production. Milk protein concentration, protein yield, fat concentration and fat yield were similar for all diets. Lactose concentrations tended (P < 0.10) to be lower with combination diets and tended to be higher for primiparous cows. There was no effect of treatment on lactose yield. Dietary …
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Effects of Replacing Forage Fiber with non-Forage Fiber in Lactating Dairy Cow Diets
… in the diet. Milk protein percentage, protein yield, milk lactose percentage and lactose yields were increased. Milk fat percentage, fat yield and feed efficiency were decreased as the percentage of DDG increased in the diets. Milk yield, energy-corrected milk and milk urea nitrogen were not …
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Improving estimations of phosphorus bioavailability for lactating dairy cows
… (P < 0.05) with phytase supplementation. Milk fat yield, protein yield, 3.5% FCM, and ECM were increased (P < 0.05) with addition of exogenous phytase to the diet. This indicates that phytate may contain some anti-nutritional factors that reduce availability in other nutrients used for milk …
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Effects of rumen-protected lysine supplement on growth and carcass traits in a traditional finishing scheme with crossbred beef steers
… score, loin muscle area (LMA), 12th rib back fat, yield grade (YG), percent of liver abscesses, or dressing percentage (P ≥ 0.28). There was a difference in hot carcass weight (HCW), but this was likely unrelated to treatment (P = 0.05). Ultimately, there was no significant advantage in …
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Evaluation of Dried and Wet Distillers Grains Included at Two Concentrations in the Diets of Lactating Dairy Cows
… C, 10% DDGS, 20% DDGS, 10% WDGS, 20% WDGS). Milk yield (39.8, 40.9, 42.5, 42.5, 43.5 kg/d) was greater (P < 0.05) for cows fed DG than C. Milk fat percentage (3.23, 3.16, 3.28, 3.55, 3.40) was similar for cows fed C and DG, but greater (P < 0.05) for cows fed WDGS than DDGS. Milk fat yield (1.28, …
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Slow-Release Urea and Highly Fermentable Sugars in Diets Fed to Lactating Dairy Cows
… concentration compared to feeding NFS. Milk fat percent was also increased for cows fed FS compared with NFS. Feeding SU decreased DM intake, and increased feed efficiency compared with cows fed NSU. Dietary treatment had no effect on energy-corrected milk, milk protein percent, milk fat …
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Effects of Calfhood Respiratory and Digestive Disease on Calfhood Morbidity and First Lactation Production and Survival Rates
… effect of disease was detected for 305-d milk yield, fat yield, or SCC, but protein yield decreased by 0.05 kg/d with increased calf respiratory disease. Although calfhood disease had no influence on illness as a cow, disease-free calves had a 5% advantage in probability of remaining in the …
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Subsequent milk production and metabolic response of first-calf heifers fed whole raw soybeans during the last trimester of gestation
… to evaluate effects of the supplemental dietary fat provided by WSB during the last trimester of gestation (90 d) on performance in the first 5 wk of the subsequent lactation, during which both groups were fed the same diet. Despite similar DMI by both groups, heifers fed WSB had greater ether …
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Systemic and Intracellular Trafficking of Long-chain Fatty Acids in Lactating Dairy Cattle
… are used as ration additives to provide omega-3 fatty acids to dairy cows. Supplementing dairy cows with omega-3 fatty acid-rich feeds does not easily increase quantities in milk fat of dairy cows because polyunsaturated fatty acids are biohydrogenated in the rumen. Lipid encapsulation of omega-3 …
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Lowering ruminally degradable protein in lacatating dairy cow diets
… can maintain feed intake, milk and milk protein yield, ruminal metabolism, passage of nutrients out of the rumen, and N excretion. The first study investigated the effects of decreasing RDP in lactating dairy cow diets on feed intake, milk production and apparent N efficiency. Forty mid-lactation …
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Intake, digestion site, extent of digestion and digesta kinetics in grazing lactating cows
… kg of concentrate. Corn, however, depressed milk fat percentage resulting in a similar milk fat yield between the two diets. Supplemental corn reduced rumen ammonia-N (22 vs 17 mg/dl) and increased N recovery at the duodenum (86 vs 75% of N intake). True Nitrogen digestibility averaged 72% and …
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Impact of different strategies and levels of preferential treatment on different methods of bull dam selection
Three milk, fat yield and final score type records were simulated for each cow in 20 herds of 200 cows over 13 years. At completion of the simulation, cows were ranked by different selection methods and the top 2% were chosen to be bull dams. Preferential treatment was simulated by increasing milk …
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