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2012

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Articles 661 - 690 of 944

Full-Text Articles in Animal Sciences

First Record And Detailed Description Of The Male Of Ilyocypris Inermis Kaufmann, 1900 (Crustacea, Ostracoda), Necmetti̇n Sari, Okan Külköylüoğlu, Derya Akdemi̇r Jan 2012

First Record And Detailed Description Of The Male Of Ilyocypris Inermis Kaufmann, 1900 (Crustacea, Ostracoda), Necmetti̇n Sari, Okan Külköylüoğlu, Derya Akdemi̇r

Turkish Journal of Zoology

Bisexual populations of Ilyocypris inermis Kaufmann, 1900 were reported for the first time from 5 different aquatic bodies in Bolu and Erzincan (Turkey). The males were compared with the males of the other 11 species of the genus Ilyocypris (I. australiensis, I. biplicata, I. decipiens, I. dentifera, I. divisa, I. fallax, I. getica, I. gibba, I. lacustris, I. mongolica, and I. monstrifica) and described based on examinations of the soft body parts (e.g., hemipenis, legs, clasping organs) and valves. Ecological characteristics of habitats where the bisexual populations found were discussed for future studies.

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New Record Of The Leafhopper Genus Busoniomimus Maldonado-Capriles From China (Hemiptera, Cicadomorpha, Cicadellidae) With Description Of A New Species, Bin Zhang, Zi Zhong Li Jan 2012

New Record Of The Leafhopper Genus Busoniomimus Maldonado-Capriles From China (Hemiptera, Cicadomorpha, Cicadellidae) With Description Of A New Species, Bin Zhang, Zi Zhong Li

Turkish Journal of Zoology

The idiocerine leafhopper genus Busoniomimus Maldonado-Capriles, 1977 is recorded for the first time in China, and a new species, B. hainanensis sp. nov., is described and illustrated from Hainan Province, China. A key to species of the genus Busoniomimus is given, and a checklist of all known species of the genus Busoniomimus is also provided.

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Histopathological Effects Of Montivipera Xanthina Venom On Rats, Hüseyi̇n Topyildiz, Si̇bel Hayretdağ Jan 2012

Histopathological Effects Of Montivipera Xanthina Venom On Rats, Hüseyi̇n Topyildiz, Si̇bel Hayretdağ

Turkish Journal of Zoology

In this study, the histopathological changes caused by Montivipera xanthina venom to rat skin, skeletal muscle, and liver tissue were analysed by light microscope. The venom (approximately 2.85 mg/kg) was injected intramuscularly into the gastrocnemius muscle of the rats. The animals were dissected 1, 3, and 6 h after the injection time, and tissue samples were taken. Sections 5 µm thick were taken from paraffin blocks of tissue samples, and the sections were stained with haematoxylin and eosin in order to facilitate examination by light microscope. Examinations showed no damage to the epidermis layer of skin. However, damage to the …

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Acute Toxicity Of Nickel To Fresh Water Prawns, Ravi Shanker Verma Jan 2012

Acute Toxicity Of Nickel To Fresh Water Prawns, Ravi Shanker Verma

Turkish Journal of Zoology

In the present study, the LC_{50} of nickel and its impact on the behaviour of 2 species of freshwater prawns, Macrobrachium lamarrei (H. Milne Edwards) and Macrobrachium dayanum (Henderson) was evaluated. An inverse relationship between LC_{50} values and exposure duration was obtained. Nickel was found to be 6.33 times more toxic to M. lamarrei than to M. dayanum. Nickel exposure increased aggression and loss of balance in both species of prawns in a concentration-dependent manner with both parameters being higher in M. dayanum (416.47 mg/L) than in M. lamarrei (65.77 mg/L). All behavioural parameters decreased with increase in exposure duration …

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Investigation Of Acute Toxicity Of Cadmium-Arsenic Mixtures To Daphnia Magna With Toxic Units Approach, Şeyda Fi̇ki̇rdeşi̇ci̇, Ahmet Altindağ, Ebru Özdemi̇r Jan 2012

Investigation Of Acute Toxicity Of Cadmium-Arsenic Mixtures To Daphnia Magna With Toxic Units Approach, Şeyda Fi̇ki̇rdeşi̇ci̇, Ahmet Altindağ, Ebru Özdemi̇r

Turkish Journal of Zoology

The acute toxicities of cadmium chloride (CdCl_2.H_2O), arsenic trioxide (AS_2O_3), and their mixtures to Daphnia magna were investigated by employing the statistical method of aquatic toxicity. The data obtained were statistically evaluated with probit analysis method (SPSS 17.0). The 24 h LC_{50} of Cd and As to Daphnia magna was estimated to be 44 µg L^{-1} for Cd, and 509 µg L^{-1} for As, respectively. With Behrens-Karber method the 24 h LC_{50} of these metals was found to be 46 µg L^{-1} and 509 µg L^{-1}, respectively. The 2 methods were in good agreement. The results suggested that D. magna …

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Growth Performance And Body Composition Of Kutum Fingerlings, Rutilus Frisii Kutum (Kamenskii 1901),In Response To Dietary Protein Levels, Ghaffar Ebrahimi, Hossein Ouraji Jan 2012

Growth Performance And Body Composition Of Kutum Fingerlings, Rutilus Frisii Kutum (Kamenskii 1901),In Response To Dietary Protein Levels, Ghaffar Ebrahimi, Hossein Ouraji

Turkish Journal of Zoology

A feeding trial was conducted to determine the optimal dietary crude protein requirement for Rutilus frisii kutum fingerlings. Five isoenergetic experimental diets were formulated to contain graded levels of protein (32%, 37%, 42%, 47%, and 52%). Triplicate groups of 80 kutum (average weight 0.5 g) were stocked in 250-L tanks and fed to apparent satiation 3 times a day for 8 weeks. The results indicate that the growth performance and feed utilization of kutum were significantly (P < 0.05) affected by dietary protein level. The second polynomial regression of weight gain against protein level yielded an estimated optimal dietary protein requirement of 41.6%. Weight gain, specific growth rate, and feed efficiency increased with increasing the dietary protein level from 32% to 42%, but decreased significantly (P < 0.05) with further increases in dietary protein. The protein efficiency ratio was inversely correlated with dietary protein level. Feed intake was not affected (P > 0.05) by dietary protein level. No significant difference was found in the whole-body protein, lipid, moisture, or ash contents of fish fed the …

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An Alternative Storage Method For Entomopathogenic Nematodes, Bariş Gülcü, Selçuk Hazir Jan 2012

An Alternative Storage Method For Entomopathogenic Nematodes, Bariş Gülcü, Selçuk Hazir

Turkish Journal of Zoology

Tetra Pak containers were evaluated as an alternative to tissue culture flasks for nematode storage. Our data showed that Tetra Pak containers were an excellent alternative to tissue culture flasks for storage of H. bacteriophora and will more than likely be useful for other entomopathogenic nematode species.

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Effect Of Food Plants On Nutritional Ecology Of Two Acridids (Orthoptera: Acrididae) To Provide Alternative Protein Supplement For Poultry, Mousumi Das, Arijit Ganguly, Parimalendu Haldar Jan 2012

Effect Of Food Plants On Nutritional Ecology Of Two Acridids (Orthoptera: Acrididae) To Provide Alternative Protein Supplement For Poultry, Mousumi Das, Arijit Ganguly, Parimalendu Haldar

Turkish Journal of Zoology

A large annual acridid biomass should be produced on acridid farms to manufacture high-quality, low-cost feed for the poultry industry. A laboratory experiment was conducted to measure the nymphal mortality, nymphal developmental period, growth indices, and adult life span of 2 common acridids (Oxya hyla hyla and Spathosternum prasiniferum prasiniferum) on 3 food plants (Dactyloctenium aegyptium, Cynodon dactylon, and Brachiaria mutica). Among the 3 food plants, D. aegyptium was suitable only for 1st and 2nd instars of O. hyla hyla, and B. mutica was suitable for the remaining instars and the adult stages of O. hyla hyla and for all …

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Contributions To The Limoniidae (Insecta, Diptera) Fauna From Inner Western Anatolia, Okan Özgül, Hasan Koç Jan 2012

Contributions To The Limoniidae (Insecta, Diptera) Fauna From Inner Western Anatolia, Okan Özgül, Hasan Koç

Turkish Journal of Zoology

The study was carried out between 2009 and 2011 in the inner part of western Anatolia (Afyonkarahisar, Kütahya, and Uşak), and 18 species were recorded for the first time for the Turkish Limoniidae fauna. The taxa are Ellipteroides (s.str.) lateralis (Macquart, 1835), Erioconopa diuturna (Walker, 1848), E. interposita Stary, 1976, Gonempeda flava (Schummel, 1829), Gonomyia (s.str.) recta Tonnoir, 1920, G. (Paralipophleps) bifida Tonnoir, 1920, Hoplolabis (Parilisia) longior Stary, 2006, Idiocera (s.str.) alexanderiana (Lackschewitz, 1940), Ilisia inermis Mendl, 1979, Molophilus (s.str.) appendiculatus (Staeger, 1840), M. (s.str.) niger Goetghebuer, 1920, Tasiocera (Dasymolophilus) murina (Meigen, 1818), Euphylidorea phaeostigma (Schummel, 1829), Pilaria scutellata (Staeger, …

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A Survey Of The Perigrapha Lederer (Lepidoptera, Noctuidae, Hadeninae) Species Of Iran, Asghar Shirvani, Mohammad Ali Shoghali, Shamsi Feizpoor Jan 2012

A Survey Of The Perigrapha Lederer (Lepidoptera, Noctuidae, Hadeninae) Species Of Iran, Asghar Shirvani, Mohammad Ali Shoghali, Shamsi Feizpoor

Turkish Journal of Zoology

Four species of the genus Perigrapha Lederer are reviewed in Iran. Two species, P. annau Varga & Ronkay, 1991 and P. flora Hreblay, 1996, are reported for the first time from the fauna of Iran. Adult and genitalia images are illustrated and identification keys for the external and genital features are given.

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The Discovery Of Neoechinorhynchus Zabensis (Acanthocephala: Neoechinorhynchidae) From Cyprinid Fishes In Turkey And Iran, With Special Reference To New Morphological Features Revealed By Scanning Electron Microscopy, Mehmet Cemal Oğuz, Omar Mohamed Amin, Richard Anderson Heckmann, Yahya Tepe, Gholamali Johargholizadeh, Burçak Aslan, Masoumeh Malek Jan 2012

The Discovery Of Neoechinorhynchus Zabensis (Acanthocephala: Neoechinorhynchidae) From Cyprinid Fishes In Turkey And Iran, With Special Reference To New Morphological Features Revealed By Scanning Electron Microscopy, Mehmet Cemal Oğuz, Omar Mohamed Amin, Richard Anderson Heckmann, Yahya Tepe, Gholamali Johargholizadeh, Burçak Aslan, Masoumeh Malek

Turkish Journal of Zoology

Neoechinorhynchus zabensis Amin, Abdullah, and Mhaisen, 2003 was described from Capoeta damascina (Valenciennes, 1842) and Capoeta trutta (Heckel, 1843) in the Greater and Lesser Zab rivers of northern Iraq. It is reported here from C. trutta in the Dez River, Iran, and from Capoeta barroisi Lortet, 1894 (new host record) in the Murat River, Turkey (both are new locality records). Neoechinorhynchus zabensis appears to be restricted to the Tigris-Euphrates basin in Iraq, Turkey, and Iran, where it infects native fishes of the genus Capoeta Valenciennes in Cuvier and Valenciennes, 1842 (Cyprinidae). Other fishes of the same genus from nearby river …

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Season- And Locality-Related Changes In The Diet Of Asiatic Jackal (Canis Aureus) In Potohar, Pakistan, Muhammad Sajid Nadeem, Ruqqya Naz, Syed Israr Shah, Mirza Azhar Beg, Amjad Rashid Kayani, Muhammad Mushtaq, Tariq Mahmood Jan 2012

Season- And Locality-Related Changes In The Diet Of Asiatic Jackal (Canis Aureus) In Potohar, Pakistan, Muhammad Sajid Nadeem, Ruqqya Naz, Syed Israr Shah, Mirza Azhar Beg, Amjad Rashid Kayani, Muhammad Mushtaq, Tariq Mahmood

Turkish Journal of Zoology

Feeding habits of the Asiatic jackal were studied through 98 scats collected between January 2009 and March 2010 from different sites in Potohar, Pakistan. The overall frequency of occurrence of plant items was 54.0%; the animal prey item frequency was 46.2%. Among the plant foods, Ziziphus was eaten year round, whereas wild olive, grasses, and wheat grains were the chief components of the diet during all seasons except summer. Among the animal food items, livestock carcasses were consumed year round; the highest consumption was observed during the summer and autumn seasons and the lowest in winter. Small mammals, particularly rodents, …

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Karyological Characteristics, Morphological Peculiarities, And A New Distribution Locality For Talpa Davidiana (Mammalia: Soricomorpha) In Turkey, Mustafa Sözen, Ferhat Matur, Faruk Çolak, Sercan Irmak Jan 2012

Karyological Characteristics, Morphological Peculiarities, And A New Distribution Locality For Talpa Davidiana (Mammalia: Soricomorpha) In Turkey, Mustafa Sözen, Ferhat Matur, Faruk Çolak, Sercan Irmak

Turkish Journal of Zoology

Talpa davidiana is the least known species of the genus Talpa, and the karyotype of this species is still unknown. Its distribution records are also very scattered. The karyological, cranial, and pelvic characteristics of 2 samples from Kızıldağ in Adana Province were analyzed for the first time. It was determined that T. davidiana has 2n = 34, NF = 66, and NFa = 62. The X chromosome was large and metacentric and the Y chromosome was dot-like acrocentric. The 2 samples are different from each other, and from previous T. davidiana records, in terms of their lower incisor and premolar …

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New Record Of Lynx Lynx (L., 1758) In Turkey (Mammalia: Carnivora), İrfan Albayrak Jan 2012

New Record Of Lynx Lynx (L., 1758) In Turkey (Mammalia: Carnivora), İrfan Albayrak

Turkish Journal of Zoology

This paper reports the morphological characteristics of a subadult lynx, Lynx lynx, collected in 2005 from Ardanuç in Artvin Province. Pelage color, hair structure, and some cranial measurements of this specimen and other recent records of Turkish lynxes are given, including that from Beyaz Dağ in Şırnak Province in the southeastern part of Turkey collected during field work and a skin from an unknown locality in Isparta. It was concluded that Turkish lynxes are likely to represent the subspecies L. lynx dinniki based on a comparison of morphometric values given in the literature.

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Distribution Of Aphanius Dispar Dispar (Rüppell, 1829) Populations In Iran, With A New Record From Western Iran (Actinopterygii: Cyprinodontidae), Yazdan Keivany, Majid Ghorbani Jan 2012

Distribution Of Aphanius Dispar Dispar (Rüppell, 1829) Populations In Iran, With A New Record From Western Iran (Actinopterygii: Cyprinodontidae), Yazdan Keivany, Majid Ghorbani

Turkish Journal of Zoology

The distribution of Aphanius dispar dispar (Rüppell, 1829) populations in Iran, which are mostly known from the eastern and southern parts of the country, and a new population in western Iran about 50 km northwest of Ilam City and 20 km east of the Iran-Iraq border are recorded. The habitat is an odd environment with sulfide water in a remote area. This is the first report of a population of this species in western Iran and at a latitude this high within its distribution range.

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Influence Of Weaning Date And Prepartum Nutrition On Cow-Calf Productivity, Kelsey M. Rolfe, L. Aaron Stalker, Terry J. Klopfenstein Klopfenstein, Richard N. Funston Jan 2012

Influence Of Weaning Date And Prepartum Nutrition On Cow-Calf Productivity, Kelsey M. Rolfe, L. Aaron Stalker, Terry J. Klopfenstein Klopfenstein, Richard N. Funston

Nebraska Beef Cattle Reports

October weaned cows had greater average BCS and BW compared to December weaned cows; however, the level of supplementation on winter range did not impact BCS or BW. Subsequent pregnancy rates (96.5% - 98.5%) were not influenced by weaning date or any winter treatments. Steer progeny showed no differences in feedlot entry BW, final BW, DMI, ADG, or carcass characteristics; and there were no differences in percentage cycling before breeding or in pregnancy rates of heifer progeny.

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Oocyte Mrna And Follicle Androgen Levels Associated With Fertility, Ningxia Lu, Jacqueline Smith, Vanessa Brauer Brauer, Adam Summers, William E. Pohlmeier, Kevin A. Beavers, Renee M. Mcfee, Kevin Sargent, Jill Kerl, Robert A. Cushman, Andrea S. Cupp, Jennifer R. Wood Jan 2012

Oocyte Mrna And Follicle Androgen Levels Associated With Fertility, Ningxia Lu, Jacqueline Smith, Vanessa Brauer Brauer, Adam Summers, William E. Pohlmeier, Kevin A. Beavers, Renee M. Mcfee, Kevin Sargent, Jill Kerl, Robert A. Cushman, Andrea S. Cupp, Jennifer R. Wood

Nebraska Beef Cattle Reports

The environment that the oocyte develops in (follicle) and the mRNA that is produced (mRNA abundance) during development were examined. Androgen levels within the follicle were higher in heifers (≤ 2 years) that never established a pregnancy compared to cows that stayed in the herd at least 3 years and had at least one successful pregnancy. These high androgen levels were associated with increased abundance of several candidate mRNAs in the cumulus-oocyte complex (COC), which includes the oocyte and somatic cells immediately surrounding the oocyte, isolated from the dominant follicle. The data suggest that androgen levels represent a marker for …

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Evaluating Conventional And Sexed Semen In A Commercial Beef Heifer Program, Tonya L. Meyer, Richard N. Funston, Kelly Ranch Ranch, James M. Mcgrann, Sexing Technologies, Abs Global Jan 2012

Evaluating Conventional And Sexed Semen In A Commercial Beef Heifer Program, Tonya L. Meyer, Richard N. Funston, Kelly Ranch Ranch, James M. Mcgrann, Sexing Technologies, Abs Global

Nebraska Beef Cattle Reports

Heifers (n = 500) were fed 0.5 mg/ day of melengestrol acetate for 14 days, and 19 days later, administered PGF2α. Following PGF2α, heifers were detected for estrus and artificially inseminated (AI) approximately 18-24 hours later. Three days following PGF2α, heifers not detected in estrus were given GnRH and AI. Heifers were AI with one of two sires, either conventional or sexed semen, creating four possibilities for AI sire. Pregnancy rate was greater for conventional than sexed semen. In addition, more heifers detected in estrus were pregnant than heifers time AI. Further research is …

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The Simmental Breed: Population Structure And Generation Interval Trends, Lynsey K. Whitacre, Matthew L. Spangler Jan 2012

The Simmental Breed: Population Structure And Generation Interval Trends, Lynsey K. Whitacre, Matthew L. Spangler

Nebraska Beef Cattle Reports

Pedigree data from the American Simmental Association from 1986-2008 were used to analyze the pedigree structure and changes in generation intervals over time within the Simmental breed. The number of breeders that accounted for 10% of sires of sires (SS), sires of dams (SD), dams of sires (DS), and dams of dams (DD) were 3, 5, 5, and 16, respectively. States with the greatest influenceon the four pathways of selection (SS, SD, DS, and DD) included Montana, South Dakota, Kansas, and Texas. In general, generation intervals for the four pathways decreased by year of birth over the time span of …

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Economic Analysis Of Keeping A Nonpregnant Cow, Trenton Bohling, Darrell R. Mark, Richard Rasby, David R. Smith Jan 2012

Economic Analysis Of Keeping A Nonpregnant Cow, Trenton Bohling, Darrell R. Mark, Richard Rasby, David R. Smith

Nebraska Beef Cattle Reports

Abnormally large numbers of nonpregnant cows in cow-calf herds may be caused by diseases like trichomoniasis or a culmination of environmental factors such as heat stress during breeding and abnormally cold winters and wet spring conditions. Typically, producers sell nonpregnant females and replace them with bred heifers or cows. The five-year cash flow budgets developed in this study suggest that in some circumstances it is economically feasible to keep a nonpregnant cow.

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Beef Heifer Development And Profitability, Matthew C. Stockton, Roger K. Wilson, Richard N. Funston Funston Jan 2012

Beef Heifer Development And Profitability, Matthew C. Stockton, Roger K. Wilson, Richard N. Funston Funston

Nebraska Beef Cattle Reports

The determination of the ideal breeding size of beef replacement females is traditionally centered on maximizing pregnancy rate. Relevant physical and economic relationships were combined into a bioeconomic systems model that identified key profit factors. This system-wide approach encapsulated the physical relationships with relevant costs and revenues, including annual and seasonal variations and measures relative to profitability through the application of an incomplete or modified profit function. Optimaloutcomes were relative to heifer size and management regime.

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Effects Of Forage Type, Storage Method, And Moisture Level In Crop Residues Mixed With Modified Distillers Grains, Barry M. Webber, Brandon L. Nuttelman, Kelsey R. Rolfe Rolfe, Cody J. Schneider, Galen E. Erickson, Terry J. Klopfenstein, William A. Griffin Jan 2012

Effects Of Forage Type, Storage Method, And Moisture Level In Crop Residues Mixed With Modified Distillers Grains, Barry M. Webber, Brandon L. Nuttelman, Kelsey R. Rolfe Rolfe, Cody J. Schneider, Galen E. Erickson, Terry J. Klopfenstein, William A. Griffin

Nebraska Beef Cattle Reports

Two growing experiments compared effects of feeding a diet consisting of cornstalks or wheat straw and modified distillers grains when ensiled or mixed fresh daily. Wheat-straw based diets also were compared at different moisture levels (50% and 70%) when ensiled and mixed daily. In Experiment 1, steers fed ensiled diets had greater DMI compared to diets mixed daily. Moisture level and crop residue type had no effect on steer performance. In Experiment 2, steers were offered the supplements and a hay mix to determine palatability and forage replacement. Moisture level had no effect, cornstalks were consumed better than wheat straw, …

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Spoilage Of Wet Distillers Grains Plus Solubles And Feed Value, Jana L. Harding, Kelsey M. Rolfe, Cody J. Schneider Schneider, Brandon L. Nuttelman, Galen E. Erickson, Terry J. Klopfenstein Jan 2012

Spoilage Of Wet Distillers Grains Plus Solubles And Feed Value, Jana L. Harding, Kelsey M. Rolfe, Cody J. Schneider Schneider, Brandon L. Nuttelman, Galen E. Erickson, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

Performance of growing or finishing steers fed wet distillers grains plus solubles (WDGS) from a silo bag (nonspoiled) or bunker (spoiled) was studied. Spoiled WDGS lost DM, as well as decreased in fat, NDF, and CP. Even though DM was lost, and composition of the spoiled WDGS changed, the spoiled WDGS had no effect on finishing cattle performance, but it did affect DMI of the growing steers consuming high forage diets.

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Metabolism Of Finishing Diets Containing Condensed Distillers Solubles And Wdgs, Anna C. Pesta, Adam L. Shreck, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson Jan 2012

Metabolism Of Finishing Diets Containing Condensed Distillers Solubles And Wdgs, Anna C. Pesta, Adam L. Shreck, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

A metabolism study was conducted to evaluate the effects of feeding wet distillers grains (WDGS) and condensed distillers solubles (CDS), both separately and in combination, on the metabolism characteristics of feedlot steers. Diet had no impact on nutrient digestibility. Average ruminal pH was lower for steers fed CDS than for those fed WDGS alone, and steers fed WDGS spent less time below pH 5.6 than steers fed diets with no WDGS. Inclusion of CDS decreased ruminal acetate concentration and acetate to propionate ratio compared to diets with less or no CDS.

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Ruminal Degradable Sulfur And Hydrogen Sulfide In Cattle Finishing Diets, Jhones O. Sarturi, Terry J. Klopfenstein, Kelsey M. Rolfe Rolfe, Crystal C. D. Buckner, Matt K. Luebbe Jan 2012

Ruminal Degradable Sulfur And Hydrogen Sulfide In Cattle Finishing Diets, Jhones O. Sarturi, Terry J. Klopfenstein, Kelsey M. Rolfe Rolfe, Crystal C. D. Buckner, Matt K. Luebbe

Nebraska Beef Cattle Reports

The relationship between ruminal degradable sulfur intake (RDSI) and ruminal hydrogen sulfide concentration ([H2S]) as well as ruminal parameters were evaluated. Steers were fed diets containing organic, inorganic, and wet distiller grains with solubles (WDGS) sources of sulfur, as well as a control diet. A laboratory procedure was developedto measure RDS of ingredients. RDSI explained 65% of [H2S] variation, whereas total sulfur intake and ruminal pH, individually, explained 29 and 12%, respectively. Availability of sulfur for ruminal reduction is more important than total sulfur in the diet.

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Potassium For Feedlot Cattle Exposed To Heat Stress, Terry L. Mader, Leslie J. Johnson Jan 2012

Potassium For Feedlot Cattle Exposed To Heat Stress, Terry L. Mader, Leslie J. Johnson

Nebraska Beef Cattle Reports

Angus crossbred yearling heifers and steers (n = 144 and 168, respectively) were used to evaluate effects of feeding soybeans and additional potassium (K) on performance and tympanic temperature (TT) of cattle under heat stress and seasonal summer conditions. In Experiment 1, cattle fed diets supplemented with potassium carbonate had lower ADG and tended to have decreased water intake, G:F, and dressing percent. In Experiment 2, cattle fed diets supplemented with K with or without whole soybeans had lower or tended to have lower TT than control cattle during the hottest portion of the day (between 1300 and 2100 hours).

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Effects Of Barley Diets With Distillers Grains Plus Solubles On Feedlot Performance And N And P Balance, Erin M. Hussey, Galen E. Erickson, Robert E. Peterson Peterson, Luis O. Burciaga-Robles Jan 2012

Effects Of Barley Diets With Distillers Grains Plus Solubles On Feedlot Performance And N And P Balance, Erin M. Hussey, Galen E. Erickson, Robert E. Peterson Peterson, Luis O. Burciaga-Robles

Nebraska Beef Cattle Reports

Effects of barley starch:NDF ratio and DDGS inclusion on feedlot performance, carcass characteristics, and N and P mass balance were evaluated in a commercial feedyard in Alberta, Canada. Yearling heifers were assigned randomly at reimplant to four treatments (0 or 20% DDGS and LOW or HIGH starch:NDF barley). Feeding LOW starch:NDF barley improved feedlot performance and increased N retention. Feeding 20% DDGS increased DMI, had a slight negative impact on F:G, and increased N and P losses.

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Grazing Supplementation And Subsequent Feedlot Sorting Of Yearling Cattle, Kelsey M. Rolfe, William A. Griffin, Terry J. Klopfenstein Klopfenstein, Darrell R. Mark, Galen E. Erickson, Dennis E. Bauer Jan 2012

Grazing Supplementation And Subsequent Feedlot Sorting Of Yearling Cattle, Kelsey M. Rolfe, William A. Griffin, Terry J. Klopfenstein Klopfenstein, Darrell R. Mark, Galen E. Erickson, Dennis E. Bauer

Nebraska Beef Cattle Reports

Steers fed (0.6% BW) modified distillers grains plus solubles on the ground had increased ADG and BW at the end of summer grazing and were more profitable. Supplemented steers were fed 24 fewer days to reach feedlot harvest goal, had greater LM area, and lower marbling. Steers sorted on feedlot entry BW had increased HCW, marbling, and YG, but percentage overweight carcasses and profitability were similar. Steers supplemented during summer grazing had $11.80/ animal greater overall profit.

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Effects Of Freezing And Thawing Rates On Tenderness And Sensory Quality Of Beef Subprimals, Jerilyn E. Hergenreder, Justine J. Hosch, Kimberley A. Varnold Varnold, Asia L. Haack, Lasika S. Senaratne, Siroj Pokharel, Catie Beauchamp, Brandon Lobaugh, Chris R. Calkins Jan 2012

Effects Of Freezing And Thawing Rates On Tenderness And Sensory Quality Of Beef Subprimals, Jerilyn E. Hergenreder, Justine J. Hosch, Kimberley A. Varnold Varnold, Asia L. Haack, Lasika S. Senaratne, Siroj Pokharel, Catie Beauchamp, Brandon Lobaugh, Chris R. Calkins

Nebraska Beef Cattle Reports

Beef ribeye rolls, strip loins, and top sirloin butts were aged for 14 days and then blast or conventionally frozen and slow or fast thawed, or were fresh, never frozen and aged for 14 days or 21 days (n = 270). Thawing method affected purge loss and tenderness, and freezing method had a minimal effect. Neither freezing nor thawing methods had an effect on sensory tenderness, and minimal effects on the other sensory attributes. It is possible to freeze and thaw beef subprimals and for the meat to be comparable in tenderness and sensory attributes to fresh, never frozen meat.

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Statistics Used In The Nebraska Beef Report And Their Purpose Jan 2012

Statistics Used In The Nebraska Beef Report And Their Purpose

Nebraska Beef Cattle Reports

The purpose of beef cattle and beef product research at UNL is to provide reference information that represents the various populations (cows, calves, heifers, feeders, carcasses, retail products, etc.) of beef production. Obviously, researchers cannot apply treatments to every member of a population; therefore, they must sample the population. The use of statistics allows researchers and readers of the Nebraska Beef Report the opportunity to evaluate separation of random (chance) occurrences and real biological effects of a treatment. Following is a brief description of the major statistics used in the beef report. For a more detailed description of the expectations …

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