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2002

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Articles 421 - 450 of 671

Full-Text Articles in Animal Sciences

Five New Chironomidae (Diptera) Species For The Turkish Fauna, Nurcan Özkan Jan 2002

Five New Chironomidae (Diptera) Species For The Turkish Fauna, Nurcan Özkan

Turkish Journal of Zoology

Five species were identified as new for the Turkish potamofauna of Edirne and Tekirdağ provinces from Thrace region between August 1995 and August 1996 in this study. They are Corynoneura scutellata Thienemann, 1944 (in Ergene River), Beckidia zabolotzkii (Goetghebuer, 1938) (in Meriç River), Robackia demeijerei (Kruseman, 1933) (in Meriç River and Sazlıdere Stream), Parachironomus arcuatus Goetghebuer 1919 (in Meriç River and Ergene River) and Parachironomus longiforceps Kruseman, 1933 (in Meriç River).


Research On The Herpetofauna Of Murat Mountain (Kütahya-Uşak), Adem Özdemi̇r, İbrahi̇m Baran Jan 2002

Research On The Herpetofauna Of Murat Mountain (Kütahya-Uşak), Adem Özdemi̇r, İbrahi̇m Baran

Turkish Journal of Zoology

In this study, the amphibians and reptilians of Murat Mountain, where only mountain frogs have been investigated so far, are introduced. A total of 99 specimens from 15 different species were collected. Four of the species belong to anurans, one belongs to tortoises, six belong to lizards and four belong to the snakes group.


The Larval Development Of The Spider Crab Menaethiops Nodulosus (Nobili, 1905) (Crustacea, Decapoda, Majidae) Reared In The Laboratory, Farhana Shafiq Ghory, Feroz Akhtar Siddiqui Jan 2002

The Larval Development Of The Spider Crab Menaethiops Nodulosus (Nobili, 1905) (Crustacea, Decapoda, Majidae) Reared In The Laboratory, Farhana Shafiq Ghory, Feroz Akhtar Siddiqui

Turkish Journal of Zoology

The present paper is based on the larval development of a spider crab Menaethiops nodulosus (Nobili, 1905) reared in the laboratory. The genus Menaethiops is represented by twelve species from Indo-Pacific regions including M. bicornis Alcock, 1895. Later two more species M. gadaniensis Kazmi & Tirmizi and M. nodulosus (Nobili) were added to the marine fauna of Pakistan. The ovigerous female of M. nodulosus was collected from Buleji on October 28, 1996, prezoeae and first zoeae were obtained on November 13, 1996 and the first zoeae were segregated for further experiment. This species passes through two zoeal stages before moulting …


The Effects Of High Salinity On The Production Of Capoeta Tinca In A Naturally Contaminated River, Fi̇tnat Güler Ekmekçi̇ Jan 2002

The Effects Of High Salinity On The Production Of Capoeta Tinca In A Naturally Contaminated River, Fi̇tnat Güler Ekmekçi̇

Turkish Journal of Zoology

The production properties of Capoeta tinca, the dominant fish population in a naturally contaminated stream in the Kızılırmak Basin, were studied together with the physical and chemical characteristics of the waters and evaluated in order to assess the impact of the high natural salinity on the fish population. The evaluation was based on comparisons of fish specimens caught from Acı stream, which is highly contaminated by a lithology of high salt content, and those from Terme stream, the uncontaminated freshwater branch, between May 1995 and May 1996. The salinity and electrical conductivity of Acı stream varied between 2‰ and 8.5‰, …


Astioglossimetra Karachiensis N. Gen., N. Sp. (Trematoda: Plagiorchiidae: Astiotrematinae) From The Marine Turtle Chelonia Mydas Of Karachi Coast, Fatima Mujib Bilqees, Nasira Khatoon, Aly Khan Jan 2002

Astioglossimetra Karachiensis N. Gen., N. Sp. (Trematoda: Plagiorchiidae: Astiotrematinae) From The Marine Turtle Chelonia Mydas Of Karachi Coast, Fatima Mujib Bilqees, Nasira Khatoon, Aly Khan

Turkish Journal of Zoology

A new trematode genus Astioglossimetra n. gen. has been erected to accommodate an undescribed species A. karachiensis n. gen., n. sp., from Chelonia mydas of the Karachi coast. The genus name refers to its relation to the genera Astiotrema Looss and Glossimetra Mehra of the family Plagiorchiidae and subfamily Astiotrematinae.


Three Unrecorded Helophorus Fabricius, 1775 (Coleoptera, Hydrophilidae) Species For The Turkish Fauna, Ümi̇t İncekara, Abdullah Mart, Orhan Erman Jan 2002

Three Unrecorded Helophorus Fabricius, 1775 (Coleoptera, Hydrophilidae) Species For The Turkish Fauna, Ümi̇t İncekara, Abdullah Mart, Orhan Erman

Turkish Journal of Zoology

Three newly recorded Helophorus Fabricius, 1775 species for Turkish fauna, Helophorus (Rhopalhelophorus) fulgidicollis Motschulsky, 1860, H. (R.) similis Kuwert, 1887 and H. (R.) subarcuatus Rey, 1885, are compared against our specimens. Furthermore, their distribution in Turkey and around the world is presented.


Longitarsus Stragulatus (Foudras, 1860), (Coleoptera: Chrysomelidae, Alticinae) A New Record Of Flea Beetles For The Fauna Of Turkey, Ali̇ Gök, Mehmet Faruk Gürbüz Jan 2002

Longitarsus Stragulatus (Foudras, 1860), (Coleoptera: Chrysomelidae, Alticinae) A New Record Of Flea Beetles For The Fauna Of Turkey, Ali̇ Gök, Mehmet Faruk Gürbüz

Turkish Journal of Zoology

Longitarsus stragulatus (Foudras, 1860) (Coleoptera: Chrysomelidae, Alticinae) is recorded for the first time in Turkey. The taxonomical features of the species are briefly described, and its general distribution and aedeagal figures given.


Micrommata Virescens (Clerck, 1757), A New Species For The Spider Fauna Of Turkey (Araneae, Sparassidae), Abdullah Bayram, Sevda Özdağ Jan 2002

Micrommata Virescens (Clerck, 1757), A New Species For The Spider Fauna Of Turkey (Araneae, Sparassidae), Abdullah Bayram, Sevda Özdağ

Turkish Journal of Zoology

The morphological characteristics of Micrommata virescens (Clerck, 1757), which is recorded for the first time in Turkey, are given.


Two Macrochelid Species (Acari: Gamasida: Macrochelidae) New To Turkish Fauna, Ali̇ Nafi̇z Eki̇z, Raşi̇t Urhan Jan 2002

Two Macrochelid Species (Acari: Gamasida: Macrochelidae) New To Turkish Fauna, Ali̇ Nafi̇z Eki̇z, Raşi̇t Urhan

Turkish Journal of Zoology

Two macrochelid species, Macrocheles (Glyptholaspis) americana and M. (G.) fimicola, which are new to Turkish fauna, are examined. The morphological characters of these species are reviewed and figures are drawn. Moreover, their zoogeographical distributions and habitats are given.


Impact Of Two Sublethal Concentrations Of Copper Chloride And Chlorine On The Excretory Products Of Crab Sesarma Quadratum (Fabricius), Santhana Valarmathi, Jayapaul Azariah Jan 2002

Impact Of Two Sublethal Concentrations Of Copper Chloride And Chlorine On The Excretory Products Of Crab Sesarma Quadratum (Fabricius), Santhana Valarmathi, Jayapaul Azariah

Turkish Journal of Zoology

Excretion in estuarine animals is considered to be an important factor in assessing their physiological status. The pattern of oxygen consumption and excretion patterns (ammonia and nitrite) in medium size mud crabs of S. quadratum (3 to 4 g weight) were studied under laboratory conditions at two sublethal concentrations of 1/10 and 1/3 of the LC_{50} value of copper chloride and chlorine. The rates of oxygen consumption and excreted products were negatively correlated to the sublethal concentrations of the toxicant. Reduced rates of oxygen consumption and excretion of ammonia and nitrite were observed when exposed to these sublethal concentrations.


Coccid (Homoptera: Coccoidea) Species Of Isparta Province, And Their Parasitoids From Turkey And Georgia, George Japoshvili, İsmai̇l Karaca Jan 2002

Coccid (Homoptera: Coccoidea) Species Of Isparta Province, And Their Parasitoids From Turkey And Georgia, George Japoshvili, İsmai̇l Karaca

Turkish Journal of Zoology

A list of coccids distributed in Isparta province (Turkey) is given in this paper. Their parasitoids determined in Isparta and previously reported from Turkey and Georgia are also discussed. As a result of the survey studies performed in June-November, 2001, 21 species of coccids were found on different host plants in Isparta province. From 16 of these coccids, 19 species of parasitoids were obtained. The similarity index of two countries in terms of their coccid parasitoids fauna was 0.635.


A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan Jan 2002

A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan

Turkish Journal of Zoology

The morphological characters and geographical distribution of Gnaphiscus setosus Koenike, 1898, a new record for the Turkish fauna, are given.


Comparison Of The Growth Performance And Mortality In Abant Trout (Salmo Trutta Abanticus Tortonese, 1954) And Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Under Farming Conditions, İrfan Uysal, Ati̇lla Alpbaz Jan 2002

Comparison Of The Growth Performance And Mortality In Abant Trout (Salmo Trutta Abanticus Tortonese, 1954) And Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Under Farming Conditions, İrfan Uysal, Ati̇lla Alpbaz

Turkish Journal of Zoology

This experiment was conducted between 15th February 2000 (day 1) and 31st January 2001 (day 350) at the DSI-Gölköy Fish Production Station, Bolu (Turkey). Abant trout larvae obtained from eggs of wild Abant trout broodstocks in Lake Abant and rainbow trout larvae obtained from eggs of the hatchery broodstocks in Gölköy Fish Production Station were used. Trials I and II involved eight groups (four Abant and rainbow trout experimental groups, and four Abant and rainbow trout parallel groups). A total of 1784 larvae was used in both the trials. At the end of the experiment, although the mean wet weight …


Evaluation Of Nile Tilapia Pond Management Strategies In Egypt, Bartholomew W. Green, Zenab El Nagdy, Hussein Hebicha Jan 2002

Evaluation Of Nile Tilapia Pond Management Strategies In Egypt, Bartholomew W. Green, Zenab El Nagdy, Hussein Hebicha

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Five pond management strategies for Nile tilapia (Oreochromis niloticus L.) production were evaluated in 0.1-ha earthen ponds in Egypt during a 145-day production cycle. Pond management strategies developed by the Pond Dynamics/Aquaculture Collaborative Research Support Program (PD/A CRSP) were compared to a traditional and to a modified Egyptian pond management strategy. Young-of-year Nile (mixed-sex or sex-reversed) tilapia were stocked into ponds at 20,000 fish ha-1. Sex-reversed tilapia were stocked into chemical fertilization, organic fertilization plus formulated feed, and feed only treatment ponds, while mixed-sex tilapia were stocked into organic fertilization plus formulated feed, and chemical plus organic …


Fiber Performance And Quality Of Angora Rabbits (Oryctolagus Cuniculus) In Different Trims, Juan Jaime Blacutt Toledo Jan 2002

Fiber Performance And Quality Of Angora Rabbits (Oryctolagus Cuniculus) In Different Trims, Juan Jaime Blacutt Toledo

Theses and Dissertations

In 132 rabbits belonging to the Cunicola La Esperanza Farm of the city of El Alto in the department of La Paz, the principle physical characteristics of the angora rabbit fiber were determined in a period of 3 shearings. As such they were organized into 2 groups, clearly differentiated by their sex (female and male). The obtained fiber of the different shearings were weighed in order to determine the performance of each animal and subsequently analyzed the wool in the Experimental Station of Patacamaya, where they determined the diameter, length of hair and marrow composition. The results were subjected to …


The Effect Of Nocturnal Sampling On Semen Quality And The Efficiency Of Collection In Bovine Species, Jennifer H. Yates Jan 2002

The Effect Of Nocturnal Sampling On Semen Quality And The Efficiency Of Collection In Bovine Species, Jennifer H. Yates

LSU Master's Theses

The objective of this study was to evaluate two semen collection schedules utilizing the assumed behavioral differences between bovine species. The efficiency was measured by bull behavior and semen quality parameters. Four Holstein and four Brahman bulls were collected each during a morning and a night collection time weekly. Ejaculates (n=64) were obtained via artificial vagina over four-weeks. To avoid masking benefits of night collection, the first collection of the week was alternated between night and day. Two collection teams were employed to reduce the time needed for collection, and the variability in collection method. Sampling order and collection team …


The Effects Of Phytase In Nutritionally Adequate Diets, Diets Deficient In Calcium And Phosphorus, And The Interactive Effects Of Phytase And Eimeria Acervulina Infection In Broiler Chicks, Brandy Centrell Watson Jan 2002

The Effects Of Phytase In Nutritionally Adequate Diets, Diets Deficient In Calcium And Phosphorus, And The Interactive Effects Of Phytase And Eimeria Acervulina Infection In Broiler Chicks, Brandy Centrell Watson

LSU Master's Theses

Six experiments were conducted to determine the interactive effects of Eimeria acervulina (E. acervulina) infection and phytase, and the effects of phytase in nutritionally adequate diets and in diets deficient in Ca and available P (aP). Corn-soybean meal (C-SBM) diets were used. In Exp 1, treatments were: 1) C-SBM, 1.0% Ca and 0.45% aP; 2) C-SBM, 0.80% Ca and 0.25% aP; 3) Diet 1 + 600 FTU phytase/kg; 4) Diet 2 + 600 FTU phytase/kg; 5 to 8) Diets 1 to 4 but infected with coccidiosis. Weight gain (ADG), feed intake (ADFI), and gain:feed were reduced (P < 0.01) by the coccidial infection and the reduction in Ca and aP. Phytase increased (P < 0.02) ADG and ADFI, regardless of the Ca and aP content of the diet or the presence of coccidiosis. Gain:feed was increased by phytase but only in uninfected chicks (phytase x coccidiosis interaction, P < 0.02). Phytase increased (P < 0.02) bone ash percentage but only in diets deficient in Ca and aP (P < 0.01). Experiments 2 and 3 included only treatments 1 to 4 of Exp 1. The reduction in Ca and aP reduced (P < 0.01) ADG, ADFI, and gain:feed. Phytase addition increased (P < 0.02) ADG and ADFI in diets deficient in Ca and aP and in the nutritionally adequate diets. Experiments 4, 5, and 6 were conducted to determine the effects of phytase on intestinal transit time in broilers. Diets were: 1) C-SBM, 0.9% Ca and 0.35% aP; 2) C-SBM, 0.80% Ca and 0.25% aP + 600 FTU phytase/kg. Transit time on Day 1, but not on Day 7, was faster (P < 0.03) in chicks fed phytase. These data indicate that phytase is effective in the presence of a coccidial infection, but it may not be as effective as in uninfected chicks. Futhermore, phytase increases growth in diets deficient in Ca and aP and in diets formulated to be adequate in all nutrients. This increase in growth may be due to a faster transit time of feed through the digestive tract, resulting in a greater feed intake and gain.


Effects Of Pre-Milking Teat Sanitation On The Quality Of Raw Milk, Laurie Depiazzi, Ian Bell Jan 2002

Effects Of Pre-Milking Teat Sanitation On The Quality Of Raw Milk, Laurie Depiazzi, Ian Bell

Bulletins 4000 -

The effect of Quartermate pre-milking teat sanitation on milk quality was investigated in twelve dairy herds over a period of eight weeks. Pre-milking teat sanitation was carried out on all cows for six weeks on each of six farms and mesophile and thermophile bacteria counts of raw milks were compared before the milk line (“cluster” samples), and at various points within milking plants. Rates of mastitis, vat milk iodide levels and specific bacteria were also monitored.


Biochemical Components In The Secretion Of The Bulb Urethral Glands Of Llama (Lama Glama) In Three Ages, Demetrio Laruta Flores Jan 2002

Biochemical Components In The Secretion Of The Bulb Urethral Glands Of Llama (Lama Glama) In Three Ages, Demetrio Laruta Flores

Theses and Dissertations

The present study was performed in the Zoo-Technical Engineering department of the Tiahuanaco Rural Academic Unit of the Bolivian Catholic University. The biochemical components of the secretions produced by the bulb urethral glands of male llama that were studied are glucose, inorganic phosphorus, creatinine, total proteins, albumin, total lipids, cholesterol, and triglycerides. Spectrophotometer standardized techniques were used in nine animals of three, four, and five years of age from communities of the Ingavi province. Groups comprised of three animals each were selected by age criteria. After dissecting and separating the pelvic urethra, gland secretion was obtained by finger pressure. The …


Organic Beef A Production Guide, Steven Mccoy Jan 2002

Organic Beef A Production Guide, Steven Mccoy

Bulletins 4000 -

Premium markets are expanding worldwide for certified organic and biodynamic beef products – those grown in accordance with recognised organic production and processing standards.

Many agricultural areas in Australia have the potential to produce organic beef, and several Western Australian and Eastern States organic producers are already exporting to Japan. Supermarkets such as Coles and Woolworths have started to build the Australian domestic market.

Converting to an organic system can be easier - requiring fewer changes - in ‘low input’ rangeland cattle production than in more intensive pasture-based or feedlot production. But regardless of the type of enterprise, managing organic …


Maximising The Lamb Drop, Don Moir Jan 2002

Maximising The Lamb Drop, Don Moir

Bulletins 4000 -

Although reproductive rates vary greatly between individual properties, the average marking percentage in Western Australia still hovers around 75%. In the absence of disease it is possible to improve on this figure by undertaking some straight forward management practices at different stages of the reproductive cycle.


A Guide To Grazing Systems And Animal Production, Kylie Woodgate, Western Australian Department Of Agriculture, Australian Wool Innovation Ltd. Jan 2002

A Guide To Grazing Systems And Animal Production, Kylie Woodgate, Western Australian Department Of Agriculture, Australian Wool Innovation Ltd.

Bulletins 4000 -

This manual has been produced as a joint venture between the Wool and Meat Programs of Agriculture Western Australia. It is intended to provide current information on most animal production issues today. It has been modified from the current Woolpro and Prograze manuals distributed to farmers and is designed for use mainly by Agricultural Colleges and Secondary Schools teaching Agriculture. It should be used in conjunction with these manuals.


Development Of The Muskox Lungworm, Umingmakstrongylus Pallikuukensis (Protostrongylidae), In Gastropods In The Arctic, Susan J. Kutz, Eric P. Hoberg, John Nishi, Lydden Polley Jan 2002

Development Of The Muskox Lungworm, Umingmakstrongylus Pallikuukensis (Protostrongylidae), In Gastropods In The Arctic, Susan J. Kutz, Eric P. Hoberg, John Nishi, Lydden Polley

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Development of the muskox protostrongylid lungworm, Umingmakstrongylus pallikuukensis, in its slug intermediate host, Deroceras laeve, was investigated under field conditions in the Arctic. Every two weeks, from 19 June to 28 August 1997, groups of ten experimentally infected slugs were placed in tundra enclosures in a mesic sedge meadow near Kugluktuk, Nunavut, Canada. First-stage larvae (L1) infecting slugs on or before 17 July developed to third-stage larvae (L3) in 4–6 weeks. Intensity of L3 in slugs peaked at 6–8 weeks post infection (PI) and then progressively declined by 10, 12, and 48–50 weeks PI. Abundance of L3 in …


Bonytail (Gila Elegans) May Enhance Survival Of Razorback Suckers (Xyrauchen Texanus) In Rearing Ponds By Preying On Exotic Crayfish, Nathan Lenon, Krystyna Anne Stave, Tom Burke, James E. Deacon Jan 2002

Bonytail (Gila Elegans) May Enhance Survival Of Razorback Suckers (Xyrauchen Texanus) In Rearing Ponds By Preying On Exotic Crayfish, Nathan Lenon, Krystyna Anne Stave, Tom Burke, James E. Deacon

Public Policy and Leadership Faculty Research

This study examined the potential of bonytail (Gila elegans) to enhance survival of young razorback sucker (Xyrauchen texanus) in rearing ponds by serving as a biological control agent for young stages of Red Swamp Crayfish (Procambarus clarki). Large populations of crayfish in rearing ponds negatively affect the survival of razorback suckers, through predation and competition for food. Traps made with 6.34 mm (0.25 inch) mesh have been used in an effort to reduce crayfish populations, however crayfish less than 17 mm carapace length (CPL) are able to escape. Juvenile bonytail in experimental trials ate young crayfish ranging in size from …


Leptodactylus Silvanimbus, W. R. Heyer, Rafael O. De Sá, Sarah Muller Jan 2002

Leptodactylus Silvanimbus, W. R. Heyer, Rafael O. De Sá, Sarah Muller

Biology Faculty Publications

Adult Leptodactylus silvanimhus are of moderate sized, the head is about as wide as long, and the hind limbs are moderate in length (see Table; also see Heyer and Thompson 2000 for definitions of adult size and leg length categories for Leptodacrylus). The male vocal sac is single and internal. Male forearms are hypertrophied in larger individuals. Adult males have two black thumb spines on each hand and lack chest spines. Individuals lack dorsolateral folds. The toe tips are narrow, not expanded. Females have weakly developed lateral toe fringes and males either have lateral toe ridges or weakly developed fringes. …


Aging Coyotes Using Dental Characteristics, Michelle Maher Jan 2002

Aging Coyotes Using Dental Characteristics, Michelle Maher

Masters Theses

The accepted methods of age determination in the coyote (Canis latrans) are either highly subjective and unquantifiable or expensive and require the extraction of the canine tooth. Since neither of these methods are ideal, their limitations have impeded research on this species. Therefore, it was my objective to (1) develop and test the accuracy and precision of a descriptive key based on tooth wear patterns on the lower canine tooth, (2) develop and test the reliability of multiple regression models for aging coyotes using measurements from extracted teeth, and (3) suggest criteria for improving the consistency of results …


Tryptophan Requirements And The Effects Of Supplemental Tryptophan On Growth Performance, Plasma Metabolites, And Meat Quality In Nursery, Growing, And Finishing Pigs, Amy Christina Guzik Jan 2002

Tryptophan Requirements And The Effects Of Supplemental Tryptophan On Growth Performance, Plasma Metabolites, And Meat Quality In Nursery, Growing, And Finishing Pigs, Amy Christina Guzik

LSU Doctoral Dissertations

This research was conducted to estimate the true digestible Trp (dTrp) requirements in nursery, growing, and late finishing pigs and the effects of supplemental Trp on physiology, behavior, and meat quality. Five experiments were conducted to estimate the dTrp requirement in nursery pigs. Using broken-line regression analysis, dTrp requirements were 0.21, 0.20, and 0.18% for Phase I (5.2 to 7.3 kg), II (6.3 to 10.2 kg), and III (10.3 to 15.7) nursery pigs. In addition, four experiments were conducted to estimate the dTrp requirements in growing and finishing pigs. Using broken-line regression analysis, the dTrp requirement of pigs weighing 30.9, …


Endocrine And Reproductive Responses To Implants Of Deslorein Acetate In Horses, Carrie Ann Johnson Jan 2002

Endocrine And Reproductive Responses To Implants Of Deslorein Acetate In Horses, Carrie Ann Johnson

LSU Doctoral Dissertations

Four experiments were performed to study the effects of the gonadotropin releasing hormone (GnRH) analog, deslorelin acetate (Ovuplant™), on endocrine and reproductive characteristics in mares. The first experiment tested whether anecdotal field reports of Ovuplant causing extended interovulatory intervals would be detectable under controlled, experimental conditions. The use of Ovuplant to hasten ovulation in 13 mares, compared to 12 controls, increased (P < 0.05) the interovulatory interval by 6.2 d and suppressed (P < 0.05) plasma concentrations of both luteinizing hormone (LH) and follicle stimulating hormone (FSH) for approximately 11 d. Two mares receiving Ovuplant did not return to estrus within 30 d. In the second experiment, 10 control mares and 10 mares induced to ovulate with Ovuplant were administered GnRH (50 μg) on d 1, 4, 7, and 10 after ovulation. Again, treated mares had a longer (4.4 d, P < 0.05) interovulatory interval and suppressed LH and FSH concentrations in daily plasma samples. The gonadotropin response to GnRH was lower (P < 0.05) in the deslorelin mares on d 1, 4, and 7, indicating a lack of pituitary responsiveness. In the third experiment, 9 stallions and 12 steroid-treated geldings were used to determine if males were potential models for studying the deslorelin-induced gonadotropin suppression. In both cases, treatment with Ovuplant caused an initial rise in both gonadotropins followed by suppression for about 14 d. In the last experiment, 21 mares were used to determine if multiple doses of deslorelin would cause complete ovarian shutdown. Mares received either sham injections, three Ovuplant implants on the first day, or one implant per day for 3 d (n = 7 per group). Treatment with multiple deslorelin implants increased (P < 0.05) the interovulatory interval by 14.8 d and suppressed LH and FSH concentrations for approximately 25 d, however no mares exhibited complete ovarian shutdown. In conclusion, deslorelin acetate implants in horses in the form of Ovuplant induce short-term increases in LH and FSH secretion followed by long-term suppression of these concentrations and an insensitivity of the pituitary to GnRH. In a small percentage of mares, long-term ovarian shutdown is a possibility.


Nutrient Profile, Functional Properties, And Microstructure Of Dried Waste Milk Products For Use As A Potential Animal Feed, Ronald I. Thompson Jan 2002

Nutrient Profile, Functional Properties, And Microstructure Of Dried Waste Milk Products For Use As A Potential Animal Feed, Ronald I. Thompson

LSU Doctoral Dissertations

A study was conducted to determine the feasibility of concentrating the wastewater of a butter/powder factory for use as an animal feed. Two concentrated products were evaluated: recovered milk product (RMP), which is the direct factory waste stream; and formulated recovered milk product (FRMP), which is a product made by combining RMP and separator de-sludge in a 3:1 ratio. Three pilot scale dryer systems were used to concentrate the product: a spray dryer, a roller dryer, and a pulse combustion dryer. Dried samples were analyzed for fat, moisture, protein, ash, nitrates, chloride, pH, calcium, phosphorus, sodium and amino acids. Values …


Effects Of Selenium On Thyroid Hormone Levels In Sheep, Ahmet Ateşşahi̇n, İbrahi̇m Pi̇ri̇nçci̇, Feri̇t Gürsu, Gürkan Çikim Jan 2002

Effects Of Selenium On Thyroid Hormone Levels In Sheep, Ahmet Ateşşahi̇n, İbrahi̇m Pi̇ri̇nçci̇, Feri̇t Gürsu, Gürkan Çikim

Turkish Journal of Veterinary & Animal Sciences

In this study, the thyroid hormone levels in sheep experimentally treated with selenium were investigated. Twelve Akkaraman sheep were used in the investigation. Selenium was given intramuscularly at doses of 0.1 (Group 1) and 0.4 mg/kg (Group 2). The blood samples were taken from the jugular vein at 1, 2, 4, 8, 24, 48, 96 and 144 hours after the administration. Serum triiodotyronine (T3), thyroxin (T4), free triiodotironine (fT3) and free thyroxin (fT4) levels were determined using a hormone autoanalyzer. In the comparison between the groups, it was shown that serum T3 levels reached the maximum levels at the 96^{th} …