Robert H. Hines

Pellet quality affects growth performance of nursery and finishing pigs

Two experiments were conducted to determine the effects of diet form (meal vs pellet) and amount of fines in pelleted feed on growth performance of nursery and finishing pigs. One hundred twenty-six weanling pigs, with an average initial body wt of 12.5 lb, were used in the 35-d nursery experiment. The same phase I diet (pelleted) was fed to all pigs for 7 d, then the pigs were switched to phase II diet treatments (d 7 to 35 postweaning). Treatments were the same phase II diet fed as: 1) meal; 2) screened pellets (fines removed); and 3) the screened pellets with 25% added fines. From d 7 to 21, average daily gain (ADG) tended to be greater for pigs fed pellets, and feed/gain (F/G) was improved by 14% when pigs were fed pelleted diets compared with those fed the meal diet. Also, pigs fed the screened pellets had a 7% improvement in F/G compared to pigs fed the pelleted diet with 25% fines. From d 7 to 35, pigs fed pelleted diets were 9% more efficient than pigs fed the meal diet. Also, pigs fed the pelleted diet with 25% added fines had 2.6% poorer F/G than pigs fed the diet with screened pellets. In the finishing experiment, 80 gilts (average initial body wt of 118 lb) were used to evaluate the effects of diet form and pellet fines on growth performance. Treatments were a common finishing diet fed as: 1) meal; 2) screened pellets; 3) pellets with 20% fines; 4) pellets with 40% fines; and 5) pellets with 60% fines. Pigs fed the meal diet or the diet with 60% fines tended to have decreased ADG compared to pigs fed the other pelleted diets. Pigs fed screened pellets had a 4.7% improvement in F/G compared with those fed the meal diet. However, increasing the amount of fines in the screened pellets diet resulted in a linear trend for poorer F/G. These results suggest that pelleting diets improved growth performance in nursery and finishing pigs; however, increasing amounts of pellet fines reduced the advantage of feeding a pelleted diet.; Swine Day, Manhattan, KS, November 18,1993

Evaporative cooling systems for swine

This report is brought to you for free and open access by New Prairie Press. It has been accepted for inclusion in Kansas Agricultural Experiment Station Research Reports by an authorized administrator of New Prairie Press. Copyright 1979 Kansas State University Agricultural Experiment Station and Cooperative Extension Service.

Effects of distillers grains on growth performance in nursery and finishing pigs

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Use of sorghum-based distillers grains in diets for nursery and finishing pigs.

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Sorghum genotype and particle size affect growth performance, nutrient digestibility, and stomach morphology in finishing pigs

Seventy pigs (average initial body wt of 119 lb) were used to determine the effects of sorghum genotype on milling characteristics, growth performance, nutrient digestibility, and stomach morphology in finishing pigs. The pigs were fed a corn-soybean meal-based control diet, with the corn (Pioneer 3377) milled to a mean particle size of 600 Î1⁄4m. Hard-endosperm sorghum (Pioneer 8585) and soft-endosperm sorghum (Pioneer 894) were milled to mean particle sizes of 800, 600, and 400 Î1⁄4m and substituted for the corn in the control diet on a wt/wt basis, so that the overall treatment arrangement was a 2 × 3 factorial plus control. The sorghums required less energy to grind, had greater production rates, and produced less noise during milling than the corn. Pigs fed the diets with hard and soft endosperm sorghum had average daily gain, average daily feed intake, and feed/gain similar to those fed corn. Pigs fed hard sorghum grew faster, but pigs fed soft sorghum were more efficient. As particle size was decreased, energy required for grinding increased and production rate slowed. Efficiency of gain and nutrient digestibility were maximized and excretion of nutrients as feces was minimized at 400 Î1⁄4m for both hardand softendosperm sorghum. Considering the positive effects of fine grinding on efficiency of gain and nutrient digestibility, but the negative effects on energy required for milling, production rate and stomach morphology,an acceptable compromise for particle size of soft and hard sorghum in pelleted diets for finishing pigs will still likely be less than 600 Î1⁄4m.; Swine Day, Manhattan, KS, November 18,1993

Extrusion of sorghum, soybean meal, and whole soybeans improves growth performance and nutrient digestibility in finishing pigs

One hundred forty-four finishing pigs (124 lb avg initial wt) were used to determine the effects of extruding sorghum, soybean meal (SBM), and whole soybeans on growth performance and nutrient digestibility. Treatments were: 1) control diet with ground sorghum, SBM, and soybean oil; 2) diet 1 with the ground sorghum, SBM, and soybean oil blended and extruded; 3) sorghum and whole soybeans extruded separately and blended; and 4) sorghum and extruded soybeans blended and extruded together. Extrusion was in an Insta-Pro extruder. All diets were formulated to be equal in concentrations of metabolizable energy (ME) and lysine. Pigs fed diets with extruded ingredients had improved F/G. Extrusion of sorghum and extruded soybeans together was of greater benefit than extruding those ingredients separately. Diets with extruded ingredients had greater digestibilities of DM and N, but fat thickness at the last rib was not affected by treatment. Overall, optimum nutrient digestibility was achieved by feeding extruded diet ingredients, and efficiency of gain was maximized by feeding an extruded blend of sorghum and whole soybeans.; Swine Day, Manhattan, KS, November 21, 1991

Effect of temperature on performance of finishing swine

We used 128 barrows averaging approximately 160 lbs. and temperatures of 32, 41, 50, 59, 68, 77, 86 and 95 F to study the effects of temperature on growth and efficiency. No significant differences in performance were observed for pigs housed at temperatures from 50 to 77 F. Those housed at 32 and 41 F were significantly less efficient than those housed at any other temperature. Pigs exposed to 95 F ate significantly less and had lower daily gains than any other group. With increased energy costs, temperature for maximum performance may no longer be the temperature for most economical performance. Results from these studies indicate that environmental modifications for heating or cooling may not be justified when temperatures range from 50 to 77 F.; Swine Day, Manhattan, KS, November 13, 1980

Effects of whole grain and distillers dried grains with solubles from normal and heterowaxy endosperm sorghums on growth performance, nutrient digestibility, and carcass characteristics of finishing pigs

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Effects of a heat-stable yeast product in pelleted diets for weanling pigs

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Effect of fat source and level on finishing pig performance

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