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2002

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Articles 331 - 360 of 671

Full-Text Articles in Animal Sciences

Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat Jan 2002

Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat

Turkish Journal of Zoology

In this study, we analyzed the relative importance of food items of Chondrostoma regium Heckel, 1843. A total of 145 individuals were sampled between April 1993 and March 1994 in Suat Uğurlu Dam Lake. Stomach content analysis was used to determine dietary composition. Relative measures of food item quantity were estimated by two different approaches: the Index of Relative Importance (IRI) and the Geometric Index of Importance (GII). The results from these indices were compared and the most reliable way of estimating dietary composition was discussed. Navicula, Cymbella and Synedra were the most frequently consumed organisms. As C. regium mostly …

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First Records Of Oreodytes Seidlitz, 1887 (Dytiscidae, Coleoptera) From Turkey: Oreodytes Septentrionalis (Gyllenhal, 1826) And Oreodytes Davisii (Curtis, 1831), Ömer Köksal Erman, Orhan Erman Jan 2002

First Records Of Oreodytes Seidlitz, 1887 (Dytiscidae, Coleoptera) From Turkey: Oreodytes Septentrionalis (Gyllenhal, 1826) And Oreodytes Davisii (Curtis, 1831), Ömer Köksal Erman, Orhan Erman

Turkish Journal of Zoology

Oreodytes septentrionalis (Gyllenhal, 1826) and Oreodytes davisi (Curtis, 1831) are recorded in Turkey for the first time and are reviewed according to our specimens and their distributions around the world.

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Three New Rhizopulvinaria Species (Homoptera: Coccoidea: Coccidae) For Scale Insect Fauna Of Turkey, Mehmet Bora Kaydan, Ferenc Kozar, Bülent Yaşar Jan 2002

Three New Rhizopulvinaria Species (Homoptera: Coccoidea: Coccidae) For Scale Insect Fauna Of Turkey, Mehmet Bora Kaydan, Ferenc Kozar, Bülent Yaşar

Turkish Journal of Zoology

Three Rhizopulvinaria species, Rhizopulvinaria pyrethri Borchsenius, Rhizopulvinaria turkestanica (Archangelskaya), and Rhizopulvinaria viridis Borchsenius, were identified on wild flora in eastern Anatolia in 1997. All of them are new records for the Turkish scale insect fauna.

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Androgenesis: The Best Tool For Manipulation Of Fish Genomes, Minal P. Bhise, Tariq A. Khan Jan 2002

Androgenesis: The Best Tool For Manipulation Of Fish Genomes, Minal P. Bhise, Tariq A. Khan

Turkish Journal of Zoology

Androgenesis involves the development of an organism with only paternal chromosomes. The induction of androgenesis using diploid sperm, highly effective UV-irradiation of egg, dispermy using heterologous eggs, the possibility of producing supermales for all male production and the recovery of cryopreserved sperm are recent technological developments in androgenesis in fish. However, few researchers have successfully produced viable diploid androgens in fish. The authors made an attempt to induce androgenesis in the common carp (Cyprinus carpio L.) and the results are discussed along with the potential applications of androgenesis in conserving fish genomes and current knowledge on inducing androgenesis in fish.

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Chromosomes Of Oedipoda Schochi Schochi And Acrotylus Insbricus (Orthoptera, Acrididae, Oedipodinae). Karyotypes And C- And G-Band Patterns, Şi̇fa Türkoğlu, Serdar Koca Jan 2002

Chromosomes Of Oedipoda Schochi Schochi And Acrotylus Insbricus (Orthoptera, Acrididae, Oedipodinae). Karyotypes And C- And G-Band Patterns, Şi̇fa Türkoğlu, Serdar Koca

Turkish Journal of Zoology

Chromosomes, with detalied karyotype information (number, shape, total length, relative length, arm ratio and centromeric index) and C- and G-band patterns of two species of grasshoppers belonging to the subfamily Oedipodinae in Turkey are described. The karyotype of Oedipoda schochi schochi with 2n O = 25 (X0) comprises eight pairs of metacentric, two pairs of submetacentric, one pair of acrocentric and one pair of subacrocentric autosomes, which come from 2n O = 23 through centric fission and the metacentric X chromosome, while Acrotylus insbricus with 2n O = 23 (X0) possesses metacentric autosomes, and the metacentric X chromosome.

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Seasonal Fluctuation In The Rotifer Fauna Of Kesikköprü Dam Lake (Ankara, Turkey), Si̇bel Yi̇ği̇t Jan 2002

Seasonal Fluctuation In The Rotifer Fauna Of Kesikköprü Dam Lake (Ankara, Turkey), Si̇bel Yi̇ği̇t

Turkish Journal of Zoology

The individual and seasonal variations of 11 rotifer species identified in Kesikköprü Dam Lake were investigated from April 1995 to May 1996. Species-wise percentages were Polyarthra vulgaris 24.5%, Keratella quadrata 20.8%, Asplanchna priodonta 16.0%, Brachionus angularis 11.2%, Keratella cochlearis 8.8%, Synchaeta litoralis 7.0%, Lecane luna 4.0%, Notholca squamula 3.8%, Lepadella patella 1.6%, Notholca acuminata 1.4% and Colurella adriatica 0.7%. Apart from two seasonal peaks in spring and autumn, some species such as S. litoralis, L. luna, N. squamula, and C. adriatica showed smaller fluctuations other than during seasonal peaks. When the annual abundance of species was taken into consideration, P. …

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Community Structure Of Macrobenthos Of A Southeast Texas Sand-Pit Lake Related To Water Temperature, Ph And Dissolved Oxygen Concentration, Kemal Çeli̇k Jan 2002

Community Structure Of Macrobenthos Of A Southeast Texas Sand-Pit Lake Related To Water Temperature, Ph And Dissolved Oxygen Concentration, Kemal Çeli̇k

Turkish Journal of Zoology

Water temperature (°C), pH, dissolved oxygen concentration (mg/l) and the community structure of the macrobenthos of a small southeast Texas sand-pit (Barry's) lake were studied from June 1995 to February 1996, which covered climatic extremes. The lake was a warm monomictic lake and no anoxic conditions were observed at any depth during the entire study period. A total of 50 taxa and 5614 individuals of macrobenthos were collected. The dominant organisms were Chaoborus punctipennis (Say), Limnodrilus hoffmeisteri (Claparede), and Dero obtusa (Udekem). The only established populations at 6.5 m were Chaoborus punctipennis, Limnodrilus hoffmeisteri, and Chironomus sp. Species diversity ranged …

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The Toxic Effects Of Malathion (Organophosphate Insecticide) On The Daphnia Magna Straus, 1820 (Crustacea, Cladocera), Maryam Rassoulzadegan, Nusret Akyurtlakli Jan 2002

The Toxic Effects Of Malathion (Organophosphate Insecticide) On The Daphnia Magna Straus, 1820 (Crustacea, Cladocera), Maryam Rassoulzadegan, Nusret Akyurtlakli

Turkish Journal of Zoology

The toxic effects of technical grade (95 %) malathion and commercial (25 %) malathion were investigated on young (£ 24 h old) Daphnia magna in static acute toxicity tests (24 and 48 h). The culture of D. magna and toxicity tests were performed at 24 ± 1 ºC with a photoperiod of 16 h light and 8 h dark. To obtain a healthy population, the fecundity of each female in their life cycle was also investigated. The immobilization of daphnids was considered for determination of the 24 h / 48 h effective concentration (50 %). The EC50 values were found …

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A Faunistic Study On Asiobates Thomson, 1859 (Hydraenidae, Polyphaga, Coleoptera) Species, Ahmet Kasapoğlu, Orhan Erman Jan 2002

A Faunistic Study On Asiobates Thomson, 1859 (Hydraenidae, Polyphaga, Coleoptera) Species, Ahmet Kasapoğlu, Orhan Erman

Turkish Journal of Zoology

A list of Asiobates species known from Turkey and their distribution worldwide are presented. A brief review and discussion of the new records, Ochthebius (Asiobates) cantabricus Balfour-Browne, 1978 and Ochthebius (Asiobates) remotus Reitter, 1887, has also been added.

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The Growth Features Of Tench (Tinca Tinca L., 1758) In Bayındır Dam Lake, Ankara, Turkey, Ahmet Altindağ, Syed Lal Shah, Si̇bel Yi̇ği̇t Jan 2002

The Growth Features Of Tench (Tinca Tinca L., 1758) In Bayındır Dam Lake, Ankara, Turkey, Ahmet Altindağ, Syed Lal Shah, Si̇bel Yi̇ği̇t

Turkish Journal of Zoology

The growth features of tench, Tinca tinca, in Bayındır Dam Lake were studied between March 1999 and February 2000. A total of 100 samples (51 males and 49 females) were examined. Age in both sexes ranged from age group I to V. The sex ratio was 1.04 and 1.0 for males and females respectively. The fork length and weight of females and males varied from 15.2 to 33.2 cm and 51.4 to 650.7 g and 15.7 to 34.7 cm and 52.8 to 822.6 g respectively. Age-length and age-weight relationships were obtained using the Von Bertalanffy growth equation. Allometric growth patterns …

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Age Determination Of Shad (Alosa Pontica Eichwald,1838) Inhabiting The Black Sea, Savaş Yilmaz, Nazmi̇ Polat Jan 2002

Age Determination Of Shad (Alosa Pontica Eichwald,1838) Inhabiting The Black Sea, Savaş Yilmaz, Nazmi̇ Polat

Turkish Journal of Zoology

The most reliable bony structure and method were investigated for age determination of shad (Alosa pontica Eichwald, 1838) inhabiting the Black Sea. Therefore, five bony structures such as scale, vertebra, otolith, opercle and subopercle were removed from 240 individuals collected from April 1998 to April 1999. Each bony structure was prepared for age determination by different techniques, and examined by binocular microscope. Mean ages were estimated for each bony structure-reader combination and the precision of age estimated from multiple readings was evaluated. Furthermore, the error of ageing was calculated. Vertebra was the most reliable bony structure for ageing this species …

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Increasing Tenderness Of Beef Round And Sirloin Muscles Through Prerigor Skeletal Separations, B.C. Shanks, D.M. Wulf, B.J. Reuter, R.J. Maddock Jan 2002

Increasing Tenderness Of Beef Round And Sirloin Muscles Through Prerigor Skeletal Separations, B.C. Shanks, D.M. Wulf, B.J. Reuter, R.J. Maddock

Animal Science Faculty Publications

Crossbred steers (n = 30) were used to explore and compare tenderness improvements in beef round and sirloin muscles resulting from various methods of pre-rigor skeletal separations. Animals were slaughtered according to industry procedures, and at 60 min postmortem one of six treatments was applied to each side: A) control, B) saw pelvis at the sirloin round junction, C) separate the pelvic-femur joint, D) saw femur at mid-point, E) combination of B and C, and F) combination of B and D. After 48 h, the following muscles were excised from each side: semi-membranosus, biceps femoris, semi-tendinosus, and adductor from the …

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Evaluating The Point Of Separation, During Carcass Fabrication, Between The Beef Wholesale Rib And The Beef Wholesale Chuck, B.J. Reuter, D.M. Wulf, B.C. Shanks, R.J. Maddock Jan 2002

Evaluating The Point Of Separation, During Carcass Fabrication, Between The Beef Wholesale Rib And The Beef Wholesale Chuck, B.J. Reuter, D.M. Wulf, B.C. Shanks, R.J. Maddock

Animal Science Faculty Publications

This study determined whether there is a logical point of value change, related to either tenderness or consumer acceptance, at which to separate the beef carcass within the rib/chuck region. Rib/chuck rolls (RCR); (n = 30) consisting of the ribeye roll and chuck eye roll subprimals (2nd through 12th rib locations) were cut into 22 steaks each (two steaks per rib location), and Warner-Bratzler shear force and consumer purchase preference were evaluated for steaks at each rib location. Steaks from different locations of the RCR were composed of differing proportions of several muscles: longissimus muscle (LM), spinalis dorsi and multifidus …

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Nebraska's Nature Compendium, Thomas E. Labedz Jan 2002

Nebraska's Nature Compendium, Thomas E. Labedz

University of Nebraska State Museum: Mammalogy Papers

With attrition claiming many academic organismal biologists, and many institutions failing to replace them, it can be difficult for natural history novices to obtain basic information for broad geographic areas. Johnsgard conceived The Nature of Nebraska in response to a tenacious teacher and the needs of her fourth-grade class in Elwood, Nebraska. This book will help fill the need for persons, especially teachers, struggling to find basic information on Nebraska's natural history and guidance in natural history education.

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Avian Vacuolar Myelinopathy: A Newly Recognized Fatal Neurological Disease Of Eagles, Waterfowl And Other Birds, John R. Fischer, Lynn A. Lewis, Tom Augspurger, Tonie E. Rocke Jan 2002

Avian Vacuolar Myelinopathy: A Newly Recognized Fatal Neurological Disease Of Eagles, Waterfowl And Other Birds, John R. Fischer, Lynn A. Lewis, Tom Augspurger, Tonie E. Rocke

United States Fish and Wildlife Service: Publications

Since 1994, wildlife biologists and wildlife health specialists have worked to determine the cause of avian vacuolar myelinopathy (AVM), a neurologic disease of bald eagles (Haliaeetus leucocephalus) and other birds. The causes of morbidity and mortality in wildlife typically are determined through both antemortem and postmortem examinations, combined with ancillary tests for microbiological organisms, toxicants and other etiologies. However, the etiology of AVM has not been determined yet, despite extensive diagnostic investigations, including examinations for common disease agents, as well as infrequent or unusual causes of mortality. With the failure of standard diagnostic testing to determine the cause …

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The Influence Of Sylvatic Plague On North American Wildlife At The Landscape Level, With Special Emphasis On Black-Footed Ferret And Prairie Dog Conservation, Michael F. Antolin, Pete Gober, Bob Luce, Dean E. Biggins, William E. Van Pelt, David B. Seery, Micael Lockhart, Mark Ball Jan 2002

The Influence Of Sylvatic Plague On North American Wildlife At The Landscape Level, With Special Emphasis On Black-Footed Ferret And Prairie Dog Conservation, Michael F. Antolin, Pete Gober, Bob Luce, Dean E. Biggins, William E. Van Pelt, David B. Seery, Micael Lockhart, Mark Ball

United States Fish and Wildlife Service: Publications

"Prairie-dogs are distributed over a large part of the Great Plains and Rocky Mountain regions. Their colonies often number thousands of individuals, and their destruction of grasses and other forage plants makes them of considerable economic importance. Drastic measures are frequently necessary to prevent the destruction of crops of grain and hay. The Biological Survey is exterminating these rodents in national forests and in the public domain. The information in this report, in regards to the several species and their distribution, as indicated by maps, will aid materially in efforts, national or state, to control or exterminate them," said Henry …

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Bioavailability And Exposure Assessment Of Petroleum Hydrocarbons And Trace Elements In Birds Nesting Near The North Platte River, Casper, Wyoming, Kimberly Dickerson, Thomas W. Custer, Christine M. Custer, Ken Allen Jan 2002

Bioavailability And Exposure Assessment Of Petroleum Hydrocarbons And Trace Elements In Birds Nesting Near The North Platte River, Casper, Wyoming, Kimberly Dickerson, Thomas W. Custer, Christine M. Custer, Ken Allen

United States Fish and Wildlife Service: Publications

The objectives of this study were to compare refinery-related petroleum hydrocarbon concentrations in nestling tree swallows (Tachycineta bicolor) and nestling house wrens (Troglodytes aedon) at sites along the North Platte River Casper, Wyoming in 1997 and 1998; and to determine if contaminants were present in concentrations that could adversely affect the birds. Because trace element concentrations, mixed function oxidase activity, and the variation in DNA are often associated with petroleum hydrocarbon concentrations in birds, each was measured as indicators of petroleum contamination. Sediment and aquatic invertebrates were also sampled for characterizing a possible contaminant source to …

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Niacin And Vitamin B12 Requirements Of Weanling Pigs, Sara S. Blodgett, Phillip S. Miller, Austin Lewis, Robert Fischer Jan 2002

Niacin And Vitamin B12 Requirements Of Weanling Pigs, Sara S. Blodgett, Phillip S. Miller, Austin Lewis, Robert Fischer

Nebraska Swine Reports

An experiment was conducted to assess the responsiveness of weanling pigs to increased dietary concentrations of niacin and vitamin B12. The purpose of the experiment was to determine if the niacin and vitamin B12 requirements of nursery pigs are greater than the NRC (1998) recommendations for 11 to 22 lb pigs. Pigs (initial weight 9.4 lb) were fed one of four diets for a total of 35 days: 1) Negative control, common nursery diet with no added niacin or vitamin B12; 2) Niacin, common nursery diet with 22.7 µg/lb added niacin; 3) B12, …

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Managing Swine Dietary Phosphorus To Meet Manure Management Goals, Mike Brumm, Charles A. Shapiro, William L. Kranz Jan 2002

Managing Swine Dietary Phosphorus To Meet Manure Management Goals, Mike Brumm, Charles A. Shapiro, William L. Kranz

Nebraska Swine Reports

A demonstration was carried out for 15 months at a 1,200-head growing- finishing facility in Holt County, Neb. The purpose was to document the impact of diet formulation on phosphorus excretion and the associated land area needed to utilize the phosphorus in the accumulated manure. The demonstration facility had four 300-head rooms. Prior to the demonstration, pigs in all rooms were fed diets formulated to contain 0.55-0.57% total phosphorus for all phases of growth. For the demonstration, two rooms were fed diets formulated to the University of Nebraska recommended levels for available phosphorus. The other two rooms were fed diets …

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Phytase Sources In Pelleted Diets, Mike Brumm Jan 2002

Phytase Sources In Pelleted Diets, Mike Brumm

Nebraska Swine Reports

An experiment was conducted to determine whether there were differences in performance between two commercial sources of phytase when added to corn and soybean meal-based diets prior to pelleting. Pelleted diets investigated for growing-finishing barrows of high-lean-gain-potential included: 1) University of Nebraska recommended formulations; 2) diets formulated to contain 0.1% less available phosphorus than recommended; 3) diets formulated with 500 FYT/kg added phytase from Ronozyme-P®; 4) diets formulated with 750 FYT/kg added phytase from Ronozyme-P®; 5) diets formulated with 500 FTU/kg added phytase from Natuphos®; and 6) diets formulated with 750 FTU/kg added phytase from Natuphos®. Temperature of the pellets …

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Dietary Amino Acid Utilization For Body Protein Deposition — Current And Future Research, Janeth J. Colina, Austin Lewis, Phillip S. Miller Jan 2002

Dietary Amino Acid Utilization For Body Protein Deposition — Current And Future Research, Janeth J. Colina, Austin Lewis, Phillip S. Miller

Nebraska Swine Reports

In modern pork production it is important to maximize the animal’s potential for daily lean gain by increasing the body protein deposition with as little wastage of the ingested amino acids as possible. Therefore, it is important to maximize the efficiency with which dietary amino acids are used for protein deposition or lean gain. This efficiency is measured by using nitrogen balance studies or comparative slaughter procedures. Supplementing swine diets with crystalline amino acids and replacing part of the dietary protein can reduce diet cost and will also reduce the amount of nitrogen excreted in manure. However, it has been …

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Explanation Of Statistics Used In This Report Jan 2002

Explanation Of Statistics Used In This Report

Nebraska Swine Reports

Pigs treated alike vary in performance due to their different genetic makeup and to environmental effect we cannot completely control. When a group of pigs is randomly allotted to treatments it is nearly impossible to get an “equal” group of pigs on each treatment. The natural variability among pigs and the number of pigs per treatment determine the expected variation among treatment groups due to random sampling.

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Defining The Optimal Feed Budget System For Terminal-Crossed, Growing-Finishing Barrows, Robert Fischer, Phillip S. Miller, Austin Lewis, Darren J. Critser Jan 2002

Defining The Optimal Feed Budget System For Terminal-Crossed, Growing-Finishing Barrows, Robert Fischer, Phillip S. Miller, Austin Lewis, Darren J. Critser

Nebraska Swine Reports

This experiment was conducted to evaluate growth performance and carcass quality measurements in growing-finishing barrows assigned to different feed budget systems. Forty-eight barrows with an initial body weight of 47.3 lb were randomly allotted to one of three different feed budget systems. The experiment was continued until the average body weight was 270 lb, at which time all pigs were slaughtered. Growth performance and real-time ultrasound measurements were taken biweekly, except for the final period, which was 24 days. Carcass tenth-rib backfat and longissimus muscle area measurements were made 24 hours postmortem. Overall, average daily feed intake (ADFI) was affected …

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Comparison Of Swine Performance When Fed Diets Containing Roundup Ready® Corn, Parental Line Corn, Or Two Commercial Corns, Robert L. Fischer, Austin Lewis, Phillip S. Miller Jan 2002

Comparison Of Swine Performance When Fed Diets Containing Roundup Ready® Corn, Parental Line Corn, Or Two Commercial Corns, Robert L. Fischer, Austin Lewis, Phillip S. Miller

Nebraska Swine Reports

This experiment was conducted to evaluate growth performance and carcass quality measurements in growing-finishing pigs fed diets containing either Roundup Ready® corn expressing the CP4 EPSPS protein, the parental control corn, or two commercial sources of nongenetically modified corn. The experiment used 72 barrows and 72 gilts with an initial body weight of 50 lb. The pigs were allotted to a randomized complete block design with a 2 x 4 factorial arrangement of treatments (two sexes x four corn hybrids). The experiment continued until the average body weight was 255 lb, at which time all pigs were slaughtered. Realtime ultrasound …

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Influence Of Linoleic Acid Isomers On Body Fat, Kim Hargrave, Kristin Nollette, Merlyn K. Nielsen, Jess L. Miner Jan 2002

Influence Of Linoleic Acid Isomers On Body Fat, Kim Hargrave, Kristin Nollette, Merlyn K. Nielsen, Jess L. Miner

Nebraska Swine Reports

In two studies, mice were fed diets containing either individual conjugated linoleic acid (CLA) isomers or a mixture of isomers in the presence or absence of dietary essential fatty acids. Mice fed the C18:2 Δ10,12 CLA isomer lost as much body fat as mice fed a mixture of isomers. This effect was not observed when the mice were fed the C18:2 Δ9,11 isomer or when feed intake was restricted. The loss of body fat was much greater in mice consuming an essential fatty acid deficient diet versus a control diet. This supports our hypothesis that for CLA to deplete body …

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Economic Analyses Of Feeding 18 G Per Ton Paylean® To Crosses Of The Ne Index Line, Rodger K. Johnson, Phillip S. Miller, D. B. Petry, R. F. Fischer Jan 2002

Economic Analyses Of Feeding 18 G Per Ton Paylean® To Crosses Of The Ne Index Line, Rodger K. Johnson, Phillip S. Miller, D. B. Petry, R. F. Fischer

Nebraska Swine Reports

Economic returns per pig for F1 and terminal cross barrows and gilts of the NE Index line when fed a diet with or without PAYLEAN® at 18 g per ton for 28 d before slaughter were compared. Although not significant, terminal cross pigs with 25% Line I genes were more profitable than F1 pigs with 50% Line I genes and gilts were more profitable than barrows. Several scenarios were modeled to evaluate the economic returns from feeding PAYLEAN®. Increased profits were similar across lines and sexes but varied depending on whether intransit death losses were considered treatment effects. …

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Effects Of Glutamine On Growth Performance And Small Intestine Villus Height In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis, Robert L. Fischer Jan 2002

Effects Of Glutamine On Growth Performance And Small Intestine Villus Height In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis, Robert L. Fischer

Nebraska Swine Reports

The pig’s small intestinal structure and function is altered during the days that follow weaning. As a consequence, the digestive and absorptive capacity of weanling pigs may decrease during this period, and this may be partially responsible for the post-weaning growth lag. Additionally, health benefits may be associated with an improved small intestinal structure and function during the early post-weaning period. This experiment was conducted to evaluate the effects of crystalline glutamine and (or) diet complexity on small intestine villus height and growth performance of 18-day-old pigs. During the 21-day trial, no differences in villus height were observed between pigs …

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Factors Affecting Bacon Color And Composition, J. E. Mann, Roger W. Mandigo, Dennis E. Burson, R. Garza Jan 2002

Factors Affecting Bacon Color And Composition, J. E. Mann, Roger W. Mandigo, Dennis E. Burson, R. Garza

Nebraska Swine Reports

The objective of this study was to determine the effects of genetic line, diet, sex, slaughter weight and location within the slab on the proximate composition and color of bacon lean and fat. Bacon slabs manufactured from bellies of 756 barrows and gilts of six different genetic lines equally distributed among four feeding regimes, with differing lysine levels, and three weight groups and processed into sliced retail bacon (nine slices/inch) were used. Sliced bacon slabs were divided into five equally sized sections and two bacon slices were taken from the anterior end of each for machine vision and proximate analyses. …

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Growth And Carcass Responses In The Ne Index Line Estimated In Pure-Line And Crossbred Litters, D. B. Petry, J. W. Holl, Rodger K. Johnson Jan 2002

Growth And Carcass Responses In The Ne Index Line Estimated In Pure-Line And Crossbred Litters, D. B. Petry, J. W. Holl, Rodger K. Johnson

Nebraska Swine Reports

The objective was to estimate responses in growth and carcass traits in the NE Index line (I) that was selected 19 generations for increased litter size. Responses in pure-line, F1 and 3-way cross litters were compared. In Exp 1, 694 gilts that were retained for breeding, including 448 I and control (C) and 246 F1 I and C by Danbred™ Landrace (L), were evaluated. Direct genetic effects of I and C did not differ for backfat or days to 230 lb; however, I had 0.24 in2 smaller longissimus muscle area (LMA) than C (P < 0.05). F1 gilts had …

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Reproductive Responses In The Ne Index Line, Rodger K. Johnson, D. B. Petry Jan 2002

Reproductive Responses In The Ne Index Line, Rodger K. Johnson, D. B. Petry

Nebraska Swine Reports

The NE Index Line (Line I) has been selected since 1981 only for litter size and as a pure-line has 3.5 to 4 more pigs per litter than its randomly selected control (Line C). Line I has been released to the industry where it is being used in crossbreeding applications, but whether the response realized in the pure-line is expressed in crossbreeding applications is not known. The objective of this experiment was to estimate responses in reproduction in Line I in pure-line sows, in pure-line sows mated to produce F1 litters and in F1 sows mated to produce …

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