Life Sciences Commons^™

On The Age, Growth And Reproduction Of The Barbel, Barbus Plebejus Escherichi (Steindachner, 1897) In The Oltu Stream Of Çoruh River (Artvin-Turkey), Ayhan Yildirim, Orhan Erdoğan, Mustafa Türkmen

Turkish Journal of Zoology

In this study, the age, growth and reproduction properties of 627 barbels, Barbus plebejus escherichi (Steindachner, 1897), from Oltu Stream in the Çoruh River Basin were investigated during a period from August 1994 to July 1996. The age of this species ranged between age groups 1 and 10, the second age group being dominant. Individuals were composed of 64.59% males and 35.41% females. von Bertalanffy growth parameters and length-weight relationships were L_t=29.35x(1-e^{-0.139(t+1.640)}), W_t=281.11x(1-e^{-0.139(t+1.640)})^{2.843} W=0.0189.FL^{2.843} (r=0.96) in males and L_t=32.77x(1-e^{-0.116(t+1.891)}), W_t=392.10x(1-e^{-0.116(t+1.891)})^{2.911}, W=0.0152.FL^{2.911} (r=0.97) in females. Condition coefficients of males and females were calculated to be 1.221 and 1.220 respectively. Sexual maturity …

Studies On The Possibility Of Improving Lamb Production By Two-Way And Three-Way Crossbreeding With German Black-Headed Mutton, Kıvırcık And Chios Sheep Breeds 1. Fertility, Lamb Survival And Growth Of Lambs, Mustafa Özcan, Ahmet Altinel, Alper Yilmaz, Hali̇l Güneş

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to compare the fertility of ewes and the survival and growth traits of lambs which were produced by two-way and three-way crossbreeding with Kıvırcık sheep, the predominant breed in the Marmara region, Chios sheep, the most prolific breed in the region and German Black-Headed Mutton (GBM), the mutton breed which exhibits the best adaptation to the environmental conditions of the region. In the study, it was determined that the fertility of the Kıvırcık, GBM x Kıvırcık and GBM x F_1 (Chios x Kıvırcık) genotypes were 76.66%, 81.13% and 85.29% for pregnancy and birth rates; …

Growth And Survival Of Simmental Calves Reared Outdoors In Individual Hutches, Necmetti̇n Ünal, Okan Ertuğrul, Orhan Alpan

Turkish Journal of Veterinary & Animal Sciences

The effects of outdoor raising on the survival and growth of Simmental calves in individual hutches were studied at Kazova State Farm, the location having a mixture of Black Sea and semiarid continental climate conditions. A total of 63 female calves born in each of the four seasons between March 1996 and February 1997 were used. The animals were kept in individual hutches for 3 months (preweaning period) and then in groups of 10 until 6 months of age (postweaning period). The mean birth weight was 38.92 kg, while average birth weights for the seasons ranged from 37.70 to 40.44 …

Determination Of Some Population Parameters And Reproduction Period Of Whiting (Merlangius Merlangus Euxinus Nordmann, 1840) On The Trabzon-Yomra Coast In The Eastern Black Sea, Erhan Çi̇loğlu, Cemaletti̇n Şahi̇n, Mustafa Zengi̇n, Yaşar Genç

Turkish Journal of Veterinary & Animal Sciences

In this study, the growth, age composition, sex ratio, condition factor and spawning period of whiting (Merlangius merlangus euxinus Nordmann, 1840) on the eastern part of the Trabzon-Yomra coast were investigated. During the study, a total of 1730 fish (1122 females and 608 males) ranging in age from group I to IX were examined. The chi squared test was used to calculate ratios between female and male specimens and no significant difference was found (P>0.05), and the relative growth length and the relative growth weight differences between females and males were not found to be statistically significant (P>0.05). …

Effects Of Temperature And Substrate On Growth And Survival Of Penaeus Semisulcatus (Decapoda: Penaeidae) Postlarvae, Meti̇n Kumlu, O. Tufan Eroldoğan

Turkish Journal of Zoology

This study was carried out to determine the optimal water temperature and to investigate the effects of additional substrate on growth and survival during the nursery culturing of Penaeus semisulcatus in two separate experiments. At the end of six weeks, survivals of postlarvae (PLs) at 22, 24, 26, 30 and 34¡C were 52, 46, 70, 30 and 40%, respectively. The highest (2.76 mm/week) and lowest growth rates in terms of total length (0.43-0.49 mm/week) were displayed by the PLs grown at 34¡C and 22-24¡C, respectively. Growth rates were 1.75 mm/week at 30¡C and 1.03 mm/week at 26¡C. Final individual weight …

Growth Conditions And Stock Analysis Of The Carp (Cyprinus Carpio, Linnaeus 1758) Population In Gölhisar Lake, Ahmet Alp, Süleyman Balik

Turkish Journal of Zoology

In this study, growth in the carp population was investigated using samples caught with longline nets of different mesh sizes. Mortality rate and stock analysis were calculated by length frequency data taken from commercial fisheries. The age composition of the samples was from I to VI. The fork lengths were between 10.5 and 49.4 cm, the total weights were found to be between 20.19 and 1922.20 g. and condition factors ranged from 1.298 to 2.388. The total mortality rate (Z) was found to be 1.36±0.10, the natural mortality rate (M) was 0.35 and the fishing mortality rate (F) was 1.01. …

The Growth Characteristics Of Chondrostoma Regium (Heckel, 1843) In Atatürk Dam Lake (Turkey), S. Ahmet Oymak

Turkish Journal of Zoology

In this study, growth characteristics including as age composition, condition factor, growth, and age-length, age-weight and length-weight relationships, in Chondrostoma regium (Heckel, 1843) living in Atatürk Dam Lake on the Euphrates River were determined. A total of 725 specimens of age groups I-VIII were investigated. The length of females and males was found statistically different only in age group III, while the weights were statistically different in age groups III and IV (P

The Possibilities Of Developing Dam And Sire Lines Using Akkaraman, Sakız And Kıvırcıksheep Breeds For Lamb Productioni. Fertility In Akkaraman Sheep, Survival Rate And Growth Characteristics Of Sakız Xakkaraman F_1 And Kıvırcık X Akkaraman F_1 Lambs, Hali̇l Akçapinar, Ceyhan Özbeyaz, Necmetti̇n Ünal, Mustafa Avci

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to investigate the possibilities of developing terminal male and female lines for lamb production by the crossing of native breeds, that is, Akkaraman, Sakız (Chios) and Kıvırcık breeds. The Akkaraman sheep is a fattailed breed raised in central Anatolia, while Sakız and Kıvırcık sheep aren non fattailed breeds raised in western and northern-western Anatolia. The Birth rate of Akkaraman x Akkaraman (AA), Sakız x Akkaraman (SA) and Kıvırcık x Akkaraman (KA) breeding groups were generally found as follows: 94.0, 78.6 and 74.0% in 1996; and 93.3, 90.8 and 85.0% in 1997, respectively. The survival rate of …

Production Characteristics Of White Karaman, Chios X White Karaman (F_1 ) Crossbred Lambs. I. Growth, Survival Ability And Body Measures, Fi̇kret Esen, Ni̇hat Yildiz

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to investigate the growth, survival ability and body measurements of White Karaman and Chios x White Karaman (F_1 ) crossbred lambs. The data for the study were obtained from 34 White Karaman and 32 Chios x White Karaman (F_1 ) crossbred lambs in suckling period and from 8 White Karaman and 10 Chios x White Karaman (F_1 ) crossbred lambs to determine body measurements. Lambs were fed with alfalfa hay and concentrates in the suckling period. The average birth weight was 3.73 and 3.78 kg, the weaning weight was 20.23 and 19.03 kg, the …

The Effects Of Weaning Age On The Growth, Milk And Milk Fat Characteristics Of Brown Swiss Cattle, Mete Yanar, Recep Aydin

Turkish Journal of Veterinary & Animal Sciences

In this research, the effects of early weaning on the growth rate and milk production characteristics of Brown Swiss cattle in later years were investigated. The calves used in the study were weaned at 5, 7 and 9 weeks of age, and the weights obtained at 6, 9, 12, 15 and 18 months of age were not significantly affected by the age of weaning. The weight gains determined between 6 and 18 months of ages with 3-month intervals were also not significantly affected by the different ages of weaning. The various ages of weaning did not result in a significant …

The Growth And Reproduction Characteristics Of Chub Leuciscus Cephalus Orientalis (Nordmann, 1840) Living In The River Aras, Mustafa Türkmen, H. İbrahi̇m Hali̇loğlu, Orhan Erdoğan, Ayhan Yildirim

Turkish Journal of Zoology

In this study, the populations structure, growth and reproduction characteristics of 1091 Leuciscus cephalus orientalis from the Yagan Region of River Aras between December 1995 and November 1997 were investigated monthly. The age composition of this species ranged between I and VIII. Individuals were composed of 48.85% males and 51.15% females. Female individuals attained greater size and age than males. The largest Female captured was 27.5 cm FL and age VIII, while the largest male was 24.1 cm FL and age VIII. Von Bertalanffy growth equations (in length and weight) and length-weight relationships were found as Lt=32.47(1-e -0.1217(t+1.63) ), Wt=502.10(1-e …

The Growth Features Of Pike (Esox Lucius L., 1758) In Dam Lake Kesikköprü, Ahmet Altindağ, Si̇bel Yi̇ği̇t, Seyhan Ahiska, Şaki̇r Özkurt

Turkish Journal of Zoology

In this study, the growth properties of pike (Esox lucius L., 1758) in Dam Lake Kesikköprü between April 1995 and March 1996 were examined. In the examined samples, the age of females and males ranged from I-V and I-IV respectively. The population was composed of 55 % males and 45' % females. The forked length and weight of females and males varied from 18,7 to 49,4 cm., from 265 to 1100 g, and from 16,5 to 53,0 cm., from 260 to 1140 g., respectively. Age-length and age-weight relations were calculated according to the von Bertalanffy growth equation formula. The following …

Growth Properties Of Bass (Dicentrarchus Labrax (L., 1758), Perciformes: Serranidae) Live In Akgöl-Paradeniz Lagoon In Göksu Delta, Serap Ergene Gözükara

Turkish Journal of Zoology

The age composition of 415 specimens of Dicentrarchus labrax caught from Akgöl-Paradeniz Lagoon, between February 1992 and July 1994, ranged between 0.-X. age groups.. The II.nd ages group of D. labrax is dominant in all individuals with a rate of 32.05 %. Average fork lenght according to ages group of D.labrax is ranged between 177,14 mm. and 700,0 mm. Average weight value according to ages group of D.labrax is varied between 63.35 and 3475 g..The value of condition factor for all indivuduals is determined for 2nd ages as 2.31 maximum and for 2nd age as 0.60 minimum. The annual and …

The Effect Of Water On Growth, Food Consumption, Feces Quantity, Digestive Activity And Glycogen Level Of Gryllus Bimaculatus (Orthoptera: Gryllidae), Ati̇la Yanikoğlu

Turkish Journal of Zoology

In this study, the effect of water on growth (wet weight gain), food consumption, feces quantity, digestive activity and glycogen level of Gryllus bimaculatus female adults was investigated by doing the experiments of feeding and starvation. Wheat bran was given for feeding. All parameters were found to be significantly higher in insects feeding with water than those feeding without water. A significant difference did not occur in mean wet weight and glycogen level in insects either feeding without water or starved for one week. At the end of the experimental period, a wet weight gain (43%) was observed only in …

Some Biological Characteristics Of Picarel (Spicara Smaris, Linnaeus 1758) In The Eastern Black Sea Coast Of Turkey, Temel Şahi̇n, Yaşar Genç

Turkish Journal of Zoology

In this study, the following biological characteristics of picarel (Spicara smaris, Linnaeus 1758) in the Eastern Black Sea Coast have been examined: sex and age distribution, growth in length and weight, growth rates, condition factor and spawning period. A total of 456 individuals, ranged between age groups I-VI, have been composed by 61.41 % females, 38.58 a/o males. The length and weight differences between females and males were significant in age group II (P

Some Biological Characteristics Of Sprat (Sprattus Sprattus Phalericus Risso, 1826) On The Eastern Black Sea Coast, Temel Şahi̇n

Turkish Journal of Zoology

In this study, biological characteristics i.e. sex and age distribution, growth (in length and weight), growth rates, and condition factor of sprat (Sprattus sprattus phalericus) from the Eastern Blak Sea coast have been examined. The percentage of females and males was 57.53 % and 42.47 % out of 372 specimens which ranged between age group I and IV. Age groups II and III were also predominant in the catch composition. The mean length values were 10.72±0.052 cm for females, 10.67±0.253 cm for males and 10.69±0.038 for both sexes (female+male). The length and weight differences between females and males were not …

Growth Properties Of Chub (Leuciscus Cephalus L., 1758) In Lake Tödürge (Zara/Sivas), Bülent Ünver, Jüli̇de Tanyolaç

Turkish Journal of Zoology

In this research, sex and age compositions, age-length, age-weight, length-weight relations, condition factors were investigated on 674 chub (Leuciscus cephalus L., 1758) specimens caught from Lake Tödürge, Sivas between April and November 1994. The age composition of L. cephalus specimens were between I-VII years and sex percentages were calculated as 68.25 % for females and 31.75 % for males. Determined minimum and maximum forklength values were 53 and 299 mm; weights were 1.5 and 347.1 g. Von Bertalanffy equations of L. cephalus specimens as length-growth and weight-growth were established as L_t = 474.19 [1-e^{-0.10608(t+0.3805)}] for females; L_t = 545.26 [1-e …

An Investigation On The Growth Criterias Of Leuciscus Cephalus In Çıldır Lake-Ardahan, Sedat Vahdet Yerli̇, Mustafa Çalişkan, Ali̇ Fuat Canbolat

Turkish Journal of Zoology

A total of 506 Leuciscus cephalus were caught in the Çıldır Lake-Ardahan from May to December 1991. The age composition of L.cephalus specimens were between II-VI years and III years olds dominated with a rate of 67.26%. In the stock the percentages were calculated as 73.00% for males and 27.00% for females. According to age groups II-VI, to average forklengths were 140.72 mm; 179.39 mm; 253.03 mm; 322.85 mm and 354.00 mm; average weights were 47.49g; 83.68g; 234.18g; 498.69 g and 596.25 g Determined minimum and maximum forklengths were 112 and 390 mm; weights were 30 and 720 g

Comparison Of Some Production Traits In Malya And Akkaraman Sheep, Nadi̇ Çolakoğlu, Ceyhan Özbeyaz

Turkish Journal of Veterinary & Animal Sciences

Summary : This research was carried out to compare the fertility traits, greasy fleece weight and wool characteristics in breeding ewes; and the growth and survival rates of lambs in Ankaraman and Malya breeds. The data was obtained for fertility traits from 5581 Malya and 9707 Akkaraman ewes, for growth rates from 100 lambs in each breed, for greasy fleece weights from 100 ewes in each breed and for wool characteristics from 32 Malya and 28 Akkaraman ewes. Fertility traits such as lambing percentage, twinning rate, litter size and number of lambs weaned per hundred ewes lambing between 1992 and …

Growth And Mortality Of Mussels ( Mytilus Edulisl.) Reared Inlantern Nets In Loch Kishorn, Scotland, Sedat Karayücel, Ismi̇han Karayücel

Turkish Journal of Veterinary & Animal Sciences

One-year old rope grown mussels ( Mytilus edulis L.) were held in experimental lantern nets at 2 m and 6 m depths in Loch Kishorn on the west coast of Scotland. Growth, mortality and shell morphology were monitored from May 1993 to August 1994. Water temperature, salinity, transparency and food availability were also determined. These showed a clear seasonal cycle, in consequence, growth of mussels was relatively rapid from May to November and very slow during the rest of the year. Depth had a insignificant effect on shell length and tissue growth (P>0.05) due to similar environmental factors. Shell …

Growth Performance, Food Intake And Feed Converison Ratios In Rainbow (Onchorynchus Mykiss) And Brook Trout (Salvelinus Fontinalis) Reared As A Single And Mixed Species, İbrahi̇m Okumuş, M. Sali̇h Çeli̇kkale, İlker Zeki̇ Kurtoğlu, Nadi̇r Başçinar

Turkish Journal of Veterinary & Animal Sciences

Growth performances, daily food consumption and feed conversion ratios of rainbow (Onchorynchus mykiss) and brook trout (Salvelinus fontinalis) reared as single and mixed species were compared. During the experimental period, which lasted for about a growing season (December - June, 217 days), mean % weight increment of single species brook trout group were maximum (from 18.2 to 165.6 g), followed by mixed rainbow (26.8 to 241.6 g) and brook trout (17.0 to 151.8 g), and single species rainbow trout (27.5 to 207.6 g). Rates of increment in biomass were in similar order. Final mean weights of single species brook trout …

A Research On The Growth Rate On The Mullet (Mugil Auratus Risso, 1810) Fingerlings Fed Different Diets In Cages, Gülçi̇n Ağirağaç, Mustafa Kalma

Turkish Journal of Veterinary & Animal Sciences

This research was conducted to determine the effect of different feeds on the growth rate of mullet juveniles (M. auratus R. 1810). Juveniles with a initial mean weight of 14.15 g and 14.71 g were feed a semi-moist diet (%50 trout viscera + %25 soybean meal + %25 high quality wheat bran) and carp pellets for a period of 60 days in marine cages. At the end of the experiment, final average weights were determined as 28.83± 0.6 g and 22.04±0.6 g have been obtained, respectively. The difference between the two harvesting weights was found statistically significant (P

The Growth Features Of Tench ( Tinca Tinca L., 1758 ) In The Kesikköprüdam Lake, Ahmet Altindağ, Sibel Yi̇ği̇t, Seyhan Ahiska, Şakir Özkurt

Turkish Journal of Zoology

In this study, the growth properties of tench ( Tinca tincaL., 1758) in the Kesikköprü Dam Lake between April 1995 and March 1996 were studied. In the specimens examined, ages ranged from I-VI in both sexes. The population was 51.43% female and 48.57% male. The fork length and weight in ranged from 16.1 to 41.4 cm and from 85 to 1350 g, respectively, and in males from 15.8 to 40.3 cm and from 83 to 1127 g, respectively. Age-length and age-weight relations were calculated according to the von Bertalanffy growth equation. The following values were obtained for females and males, …

Studies On Possibility Of Producing High Quality Lambsby Crossbreeding Among Sakız, Kıvırcık Andgerman Black Headed Mutton Sheep, Ahmet Altinel, Mehmet Evri̇m, Mustafa Özcan, Hasan Başpinar, Fazıl Deli̇gözoğlu

Turkish Journal of Veterinary & Animal Sciences

This study has been carried out to get more and rapid growing lambs fit for slaughter by crossbreeding Kivircik ewes with Sakiz rams so as to produce F 1 females with high fertility and high milk yield and crossbreeding these F 1 females with German Black Headed Mutton rams. Studies have been carried out at Bandırma Sheep Breeding Research Institute. On the first step of this study 5 Sakiz rams and 134 Kivircik ewes had been used. When F 1 females produced by Sakiz X KIvircik crossbreeding became mature, they had been crossbred with German Black Headed Mutton rams. The …

The Effects Of Different Feeding Rates On Growth And Feed Conversion Of Rainbow Trout ( Oncorhynchus Mykiss) Reared In Sea Cages In Black Sea (Sinop), Turkey, Serap Ustaoğlu, Recep Bi̇rcan

Turkish Journal of Veterinary & Animal Sciences

TAOĞLU, Recep BİRCAN Ondokuz Mayıs Üniversitesi, Sinop Su Ürünleri Fakültesi, Sinop - TÜRKİYE Abtract: In the research, rainbow trout with a mean weight of 123 g were fed 1.5-1.8% (I. group) and 2.25-2.7% (II. group) of the body weight and adlibitum (III. group), respectively to investigate the effects of different feeding rates on growth and feed con-version. At the end of the experiment, final average weights of 411.3±10.08 g, 484.2±14.23 g and 513.5±14.93 g, have been obtained, respectively. The difference between the I. group and II. group, and also the I. group and III. group was found significant (p0.05) according …

The Distribution, Ecology And Growth Of The Chestnut Lamprey, Ichthyomyzon Castaneus, In The Clearwater River, Minnesota, Charles S. Holt, Paul A. Durkee

Journal of the Minnesota Academy of Science

This study dealt primarily with the ammocoete stage of the chestnut lamprey, lchthyamyzan castaneus (Girard). The population estimate for ammocoetes in the 25.5 m2 section studied was 540 individuals. The lengths of 452 ammocoetes collected ranged from 42 to 164 mm. A total of 213 chestnut lampreys were retained for laboratory study. Twenty of these were adults with an average length of 136.8 mm (range= 125 mm to 191 mm). Six age classes of ammocoetes were determined. An average increase in body length of recaptured ammocoetes of 2.9 mm was observed during the summers of 1980 and 1981. The habitat …

Seasons Can Affect Growing Pigs, W D. Sharp

Journal of the Department of Agriculture, Western Australia, Series 4

No abstract provided.

Sheep Meat Production Trial, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Better understanding of Middle- East, European and Asian market requirements for Australian sheep has influenced the design of a large meat production trial at Avondale Research Station.

The trial will supply basic information on sheep meat production and involves examples of breed types available in Western Australia and capable of supplying young, lean animals all the year round.