scholarly journals Epiphytic and Ice-ice Diseases of Seaweed, Kappaphycus alvarezii and its Effect on Growth Rate and Carrageenan Quality

2017 ◽  
Author(s):  
Alexander Rantetondok ◽  
Gunarto Latama
Keyword(s):  
Growth Rate ◽  
Kappaphycus Alvarezii ◽  
Carrageenan Quality ◽  
Effect On Growth

scholarly journals Peningkatan kualitas karagenan rumput laut Kappaphycus alvarezii dengan metode budidaya keranjang jaring

2016 ◽  
Vol 15 (2) ◽  
pp. 124 ◽  
Author(s):  
Ismail Failu ◽  
Eddy Supriyono ◽  
Sugeng Hari Suseno
Keyword(s):  
Growth Rate ◽  
Kappaphycus Alvarezii ◽  
Gel Strength ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Cultivation Method ◽  
Yield Value ◽  
Carrageenan Quality ◽  
Seaweed Culture

<p class="NoParagraphStyle"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle">This study aimed to analyze the quality of <em>Kappaphycus alvarezii </em>seaweed carrageenan cultured using methods basket nets in waters of Baruta, Sangia, Wambulu, District of Buton, Southeast Sulawesi. The study consisted of three treatments in triplicates. Seaweed culture used different cultivation net-basket forms i.e. net-basket box, net-basket lantern, and longline without net-basket (control). Quality of <em>K. alvarezii</em> seaweed obtained in this study varied from each treatments. Daily growth rate in each treatment were not significantly different. Production of seaweed with a net-basket box (201.61 g/m<sup>2</sup>) was higher than the net-basket lanterns (183.22 g/m<sup>2</sup>), but not significantly different from control (196.98 g/m<sup>2</sup>). Carageenan yield value of control (46.74%) was the highest of all treatments. The water content of carrageenan in each treatment was not significantly different and it ranged from 17.20–17.39%. The viscosity of carrageenan in net-basket lantern (179.40 cPs) was the highest of all treatments. Carrageenan gel strength was the best treatment (702.53 g/cm²). As conclusion, using the net-basket lantern  as cultivation method provided quality improvement of carrageenan in <em>K. alvarezii</em> seaweed.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: <em>Kappaphycus alvarezii</em>, cultivation methods, carrageenan quality</p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong>ABSTRAK</strong><strong></strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle">Penelitian ini bertujuan untuk menganalisis kualitas karagenan rumput laut <em>Kappaphycus alvarezii </em>yang dibudidaya menggunakan metode keranjang jaring di perairan Baruta, Kecamatan Sangia, Wambulu, Kabupaten Buton Sulawesi Tenggara. Penelitian terdiri atas tiga pelakuan dan tiga ulangan. Pemeliharaan rumput laut dilakukan dengan metode keranjang jaring berbeda yaitu metode keranjang jaring kotak, keranjang jaring lampion, dan longline tanpa menggunakan keranjang jaring (kontrol). Hasil pengamatan kualitas rumput laut <em>K. alvarezii </em>dalam penelitian ini bervariasi dari setiap perlakuan yang diberikan. Laju pertumbuhan harian pada setiap perlakuan tidak berbeda nyata. Produksi rumput laut dengan metode keranjang jaring kotak (201,61 g/m<sup>2</sup>) lebih tinggi dibandingkan jaring lampion (183,22 g/m<sup>2</sup>), namun tidak berbeda nyata dengan kontrol (196,98 g/m<sup>2</sup>). Nilai rendemen karagenan kontrol (46,74%) lebih tinggi dari perlakuan lainnya. Kadar air karagenan pada setiap perlakuan tidak berbeda nyata yaitu berkisar 17,20–17,39%. Viskositas karagenan perlakuan metode keranjang jaring lampion (179,40 cPs) lebih tinggi dibandigkan perlakuan lainnya. Kekuatan gel karagenan perlakuan metode keranjang jaring lampion (702,53 g/cm²) lebih tinggi dibandingkan perlakuan lainnya. Berdasarkan hasil tersebut, maka dapat disimpulkan bahwa metode keranjang jaring lampion memberikan peningkatkan kualitas karagenan rumput laut <em>K. alvarezii </em>yang dibudidayakan.</p><p class="NoParagraphStyle"> </p><p>Kata kunci: <em>Kappaphycus alvarezii</em>, metode budidaya,  kualitas karagenan</p>

THE EFFECTS OF SEX AND AGE OF MALE AT CASTRATION ON GROWTH AND CARCASS QUALITY OF YORKSHIRE SWINE

1961 ◽  
Vol 41 (1) ◽  
pp. 30-39 ◽  
Author(s):  
L. A. Charette
Keyword(s):  
Growth Rate ◽  
Iodine Number ◽  
Feed Efficiency ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Carcass Quality ◽  
Selection Of ◽  
Effect On Growth

The effects of sex and age of castration of males on growth rate, feed efficiency and carcass characteristics in bacon type swine were measured using 16 pigs each as gilts, entire boars, and boars castrated at birth, 6, 12, 16, and 20 weeks of age. Castration at 20 weeks was too late since some pigs reached 200 pounds live weight before that age. Boars consumed less feed daily than barrows and gilts, were thinner in loin fat, and yielded a higher percentage of shoulder than gilts. The carcasses of boars and gilts were longer, had less fat covering over the shoulder and back, a larger area of loin, and a higher iodine number than those castrated late. Acceptability tests showed that sex or age of castration did not affect the flavour, odour, or tenderness of the meat.Purebred breeders can delay castration for better selection of boars without any serious effect on growth, physical carcass characteristics, and feed requirements. Although the market discriminates against boars, it appears questionable whether castration is necessary when boars are slaughtered at 200 pounds before they reach the age of 150 days.

scholarly journals Substitution of soyabean meal with bioactive yeast in the diet of Clarias gariepinus: Effect on growth rate, haematological and biochemical profile

2012 ◽  
Vol 11 (91) ◽  
pp. 15802-15810 ◽  
Author(s):  
Evelyn Ezenwaji Ngozi ◽  
Iluno Ada ◽  
Atama Chinedu ◽  
Onyekachi Nwaigwe Chukwuemeka ◽  
Uchenna Nwaigwe Chioma
Keyword(s):  
Growth Rate ◽  
Clarias Gariepinus ◽  
Biochemical Profile ◽  
Soyabean Meal ◽  
Effect On Growth

scholarly journals WATER QUALITY AND ITS EFFECT ON GROWTH AND SURVIVAL RATE OF LOBSTER REARED IN FLOATING NET CAGE IN EKAS BAY, WEST NUSA TENGGARA PROVINCE

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Muhammad Junaidi ◽  
Mat Sardi Hamzah
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Quality Data ◽  
Dominant Factor ◽  
Growth And Survival ◽  
Water Quality Status ◽  
Net Cage ◽  
Quality Status ◽  
Effect On Growth

ABSTRACT The development of lobster farming in floating net cage in Ekas Bay caused an environmental degradation such as decrease water quality due to some aquaculture wastes. The purposes of this study were to determine the status of water quality and their effect on growth and survival rate of lobster reared in floating net cages (FNC) in the Ekas Bay, West Nusa Tenggara Province. Water sample collection and handling referred to the APHA (1992). Analyses of water quality data were conducted using Principal Component Analysis. Determination of the water quality status of Ekas Bay was performed with STORET system. Multivariate analyses were used to determine the relationship between water quality, growth, and survival rate of lobster reared in FNC. Results showed that Ekas Bay water quality status was categorized in class C (medium contaminated), which exceeded some quality standard parameters such as ammonia (0.3 mg/l), nitrate (0.008 mg/l), and phosphate (0.015 mg/l). During lobster farming activities feeding with trash fish for 270 days, we obtained daily growth rate of  0.74% (lower than normal growth rate of 0.86%), survival rate of 66% (lower than normal survival rate of 86.7%), and feed conversion ratio of 11.15. Ammonia was found as a dominant factor reducing growth  and survival rate of lobster reared in FNC. Keywords: water quality, lobsters, growth, survival, Ekas Bay

Lack of an association between heterozygosity and growth rate in the wood frog, Rana sylvatica

1995 ◽  
Vol 73 (3) ◽  
pp. 569-575 ◽  
Author(s):  
Michael F. Wright ◽  
Sheldon I. Guttman
Keyword(s):  
Growth Rate ◽  
Multiple Regression ◽  
Rana Sylvatica ◽  
Developmental Period ◽  
Wood Frog ◽  
Single Locus ◽  
Regression Analyses ◽  
Enzyme Loci ◽  
Effect On Growth

The effect of both multilocus and single-locus heterozygosity on growth rate was examined in a cohort of larvae of the wood frog, Rana sylvatica, collected from a pond during the later stages of premetamorphic development. Seven electrophoretically detected enzyme loci were used to determine individual heterozygosity, whereas the growth rate was measured as wet mass. In all cases, no significant correlation was found between multilocus heterozygosity and mass among larvae collected at intervals during the developmental period. In addition, multiple regression analyses indicated that no single locus had a demonstrable effect on growth rate. The results of this study, therefore, provide no evidence for a link between enzyme heterozygosity and growth rate during the later stages of premetamorphic development in wood frog larvae.

scholarly journals A Mutation at the I Locus in an Inbred Line of White Leghorns and its Effect on Growth Rate

1962 ◽  
Vol 41 (2) ◽  
pp. 488-493 ◽  
Author(s):  
C.A. Blackwood ◽  
B.B. Bohren ◽  
H.E. Mckean
Keyword(s):  
Growth Rate ◽  
Inbred Line ◽  
White Leghorns ◽  
Effect On Growth

Comparative feeding value of expeller-processed undecorticated and decorticated cottonseed cakes for growing chicks

1978 ◽  
Vol 91 (3) ◽  
pp. 531-541 ◽  
Author(s):  
N. K. Sharma ◽  
G. N. Lodhi ◽  
J. S. Ichhponani
Keyword(s):  
Growth Rate ◽  
Free Gossypol ◽  
Crude Protein ◽  
Metabolizable Energy ◽  
Feed Conversion ◽  
Internal Organs ◽  
Protein Utilization ◽  
Feeding Value ◽  
Finisher Diets ◽  
Effect On Growth

SummaryExperiments were made to evaluate the feeding value of undecorticated (UCS) and decorticated (DCS) cottonseed cakes and defatted DCS for egg-type starter, broiler starter and finisher diets for chicks. The results showed that UCS on average contained 22% crude protein, 0·06% free- and 0·33% bound-gossypol and 4·9% available carbohydrate. The corresponding values for DCS were 38, 0·04, 0·63 and 9·5%, respectively. Average metabolizable energy (ME) content of UCS, DCS and defatted DCS was 7·94, 11·77 and 9·42 MJ/kg, respectively. Apparent protein digestibilities of UCS, DCS and defatted DCS were 42, 47 and 36%, respectively. Although UCS had no effect on growth rate of egg-type and meat-type chicks when fed as 15% of the diet, feed conversion was adversely affected. Feeding DCS to broiler starter and finisher chicks as 30% of the diet, replacing groundnut cake (GN) had no effect on growth rate and efficiency of protein utilization but feed conversion was affected. The chicks of either breed were able to tolerate 0·02% free-gossypol of the diet derived from UCS or DCS without any adverse effect on growth rate and internal organs.

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