scholarly journals Balık Beslemede Biyoteknolojik Uygulamalar

Author(s):  
Makbule Baylan ◽  
Gamze Mazı ◽  
Sedat Gündoğdu

In order to put cultured species on the market with high quality and few casualties, many important studies are carried out. Most of the researches are conducted in the development of feed and feed ingredients 30-60% of the production cost in farming. Therefore, in aquaculture, an interest in alternative feed ingredients is moving at a very fast rate. In this context, the use of enzymes, probiotics and prebiotics in animal feed has steadily increased in recent years with reasons such as effective control of fish diseases and prevention of infection, strengthening the immune system of fish, increase of the digestibility, reduction of the feed cost, reduction of larval-term mortality, provision of increase in growth, live weight gain, and getting rid of the negative effects of stress.

2019 ◽  
Author(s):  
NILAWATI

Livestock business is not separated from the cost of feeds issued. Feed is the largest production costs of 60-70% of the total production costs, so it needs to look for and utilize other alternative feed ingredients that do not compete with humans, the price is cheap, easy to obtain and not ignore the content nutrients from the feed ingredients.One of the alternative feed ingredients derived from agricultural waste that is available in large quantities and can be used as animal feed is Azolla pinnata with crude protein content ranging from 24 - 30%. Azolla pinnata plants or water spikes are the plants that usually live on the water surface, so far the farmers consider Azolla pinnata as a weed that disturbs their crops, so Azolla pinnata much thrown away by the farmers.In addition to utilizing Azolla pinnata as broiler feed and broilernya optimal growth should be added probiotics. Provision of probiotics are expected to function to maintain the health of chicken digestion as well as a growth spur so that later available food poultry products in the form of good meat, healthy and reduce residual antibiotics.This research has been conducted in Farm State Agricultural Polytechnic Payakumbuh. The data were collected for four weeks using 100 broiler children, with Completely Randomized Design using 5 treatments and 4 replications, with parameters: weight gain, consumption, conversion, carcass percentage and abdominal fat.The results of this study show that there is an increase in body weight and percentage of carcass. The average percentage of carcasses ranged between 59.24% - 67.52% and the abdominal fat percentage ranged from 9.86% to 11.34%.The conclusion of this study besides can reduce production cost also seen that best treatment that is combination in use of Azolla pinnata 15% and probiotic 10 ml.


Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 884
Author(s):  
Emmanuelle Haslin ◽  
Rene A. Corner-Thomas ◽  
Paul R. Kenyon ◽  
Adrian J. Molenaar ◽  
Stephen T. Morris ◽  
...  

The experiment aimed to examine the impacts of an increased growth rate of ewes between three and seven months of age on udder development using ultrasound and to establish whether ultrasonography could be used to identify ewe mammary structures that may be indirect indicators of singleton growth to weaning. Udder dimensions, depths of gland cistern (GC), parenchyma (PAR) and fat pad (FP) were measured in late pregnancy (P107), early lactation (L29), and at weaning (L100) in 59 single-bearing yearling ewes selected from two treatments. The ‘heavy’ group (n = 31) was preferentially fed prior to breeding achieving an average breeding live-weight of 47.9 ± 0.38 kg at seven months of age. The ‘control’ group (n = 28) had an average breeding live-weight of 44.9 ± 0.49 kg. Udder dimensions, GC, PAR and FP did not differ between treatments. Lamb growth to L100 was positively associated (p < 0.05) with PAR at P107 and GC at L29. There was no evidence of negative effects of the live-weight gain treatments on udder development of yearling ewes as measured by ultrasonography. The results suggest that this ultrasound method has the potential to identify pregnant yearling ewes which would wean heavier singletons.


Author(s):  
Leonardo C. Caserta ◽  
Jessica C. G. Noll ◽  
Aaron Singrey ◽  
Megan C. Niederwerder ◽  
Scott Dee ◽  
...  
Keyword(s):  

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 112-113
Author(s):  
Mohammad Habibi ◽  
Parniyan Goodarzi ◽  
Cedrick N N Shili ◽  
Julia Sutton ◽  
Caitlyn Wileman ◽  
...  

Abstract Increased feed cost, post-weaning diarrhea, and nitrogen excretion are challenging the modern swine industry. Very low-protein (LP) diets (&gt;4% units reduced protein) may reduce feed cost, diarrhea and nitrogen excretion; however, these diets impair growth performance of pigs despite supplementation of limiting amino acids (i.e., lysine, threonine, methionine and tryptophan). The objective of this study was to investigate the effect of valine, isoleucine and combination of both supplemented to VLP diet on growth, thermal radiation, and gut development in young pigs. Forty three-week-old weaned barrows were weighed (6.75 ± 0.14 kg) and randomly assigned to five groups (8 pigs/group) including: 1) standard diet or positive control (PC), 2) LP diet, 3) LP + valine (LPV), 4) LP + isoleucine (LPI) and 5) LP + both valine and isoleucine (LPVI) for five weeks. Daily feed intake and weekly growth characteristics were measured and weekly thermal images were captured. All pigs were euthanized at week 5 and tissue samples collected. All data were analyzed with univariate GLM followed by Tukey’s post-hoc test (SPSS®). Compared to PC, final body weight, average daily gain, average daily protein intake and gain:feed ratio were reduced in LP group, but feeding pigs with LPVI partially or completely recovered these parameters. Pigs fed with LPVI had higher thermal radiation than those fed with PC, LP, and LPI on days 28 and 35 of study and had a greater the area under the curve for thermal radiation than LP and LPI. Duodenal villus width and crypt depth, and ileal villus height were decreased in LP relative to PC, but LPVI either partially or fully recovered these measurements. In conclusion, supplementing a combination of valine and isoleucine recovered the negative effects of very low-protein diets on growth performance and gut development, but increased the thermal radiation in weaned pigs.


2021 ◽  
Vol 22 (2) ◽  
pp. 145-149
Author(s):  
J. A. Agunbiade ◽  
A. B. Odufuwa

A 4 week experiment involving 45 growing albino rats was carried out to assess the nutritional utilization of cooked full-fat soybean (CFFS) as a major source of dietary protein relative to that of the protein concentrates fishmeal-groundnut cake mixture and the response to supplementation of the cooked soybeans with 2g DL-methionine/kg diet and/or 2g L-lysine/kg diet. Feed intake (FI), average daily weight gain (DLG),. feed conversion ratio (FCR), protein efficiency ratio (PER) and feed cost (FC) per unit live-weight gain, (FC/WG) were measured, No significant effect of the various dietary treatments was observed on PER and FCIWG. However, the incorporation of CFFS either alone or in conjunction with either of both lysine and methionine significantly improved Fl and FCR (P< 0.05) and also DLG (P< 0.01) over the control fish-groundnut meal ration. Supplementation of CFFS with lysine either alone or along with methionine appeared unwarranted as methionine supplementation alone resulted in similar or slightly better efficiency of protein (0.247) and overall feed (0.596) utilization. From the results obtained, it appears that maize-based CFFS diet supplemented with 2 g/kg DL-methionine may be applicable for lion- ruminant feeding. However, since this level of methionine supplementation only provides for 67% of rat requirement, it is suggested that further studies with higher methionine levels be conducted.


Author(s):  
Yeni Farida ◽  
Heru Sasongko ◽  
. Sugiyarto

Raising livestock has been used as sidejob by farmers in Sendang because of availability of feed is problem, especially in the dry season. The utilization of local plant is expected to reduce the proportion of the cost for animal feed cost. In addition, supplementation of feed or herbal medicine is expected to accelerate the growth of animals to increase farmers' profits. This program aimed to provided solutions for feed endurance as well as provided knowledge to farmers about the use of medicinal plants to accelerate the growth of livestock. This program consists of three stages as followed: socialization and counseling, fermentation and herbal weightlifting ration formulation training and then evaluation. This program conducted for 45 days. The result was farmer awareness of local feed potency in Sendang village, increasing of farmer understanding about fermentation and supplement ration, ration formulation utilized directly by participant. To support the sustainability of the program, team created modules, supervised and coordinated with the head of the farmer group.


2019 ◽  
Vol 29 (3) ◽  
pp. 428-442 ◽  
Author(s):  
Vladimir I. Syrovatka ◽  
Natalya V. Zhdanova ◽  
Aleksandr N. Rasskazov ◽  
Dmitriy I. Toropov

Introduction. The article substantiates the need for high-temperature processing of feed ingredients. Principles of operation and design features of the applied methods and equipment for feed production are considered. Phase transitions, along with advantages and energy, technological, and technical drawbacks are highlighted. The aim of the study is to justify a possibility of creating high-efficiency production lines using heat treatment of feeds by application of heat valves ensuring continuous loading of raw materials into a reactor and discharge of the treated feed at high pressures and temperatures. Materials and Methods. It is proposed to transfer the process of barothermal processing to a higher zone of the phase diagram of the system p,t (pressure and temperature). This is a section of the superheated steam zone with temperature 300–374 °C, pressure 12–21 MPa and treatment exposure 30–60 seconds, which replaces costly processes of normalizing, expansion, extrusion and granulation. The change in enthalpy in the pressure range 0–21 MPa and temperature range 0–600 °C is shown. Thermal modes are presented as formulas which is the basic condition for the use of digital technologies. Results. The design of the reactor with a thermal gate for loading and unloading, being the main unit of the production line of the feed heat treatment, was proposed. The results of the study are fundamental for the development of the sample flow low-capacity line. Discussion and Conclusion. The transfer of the process of barothermic processing of feed into the zone of superheated steam allows for the transfer of poorly digestible elements of grain and legumes in easily digestible, pathogen-free feed. Advantages of the reactor and line include the user-friendly design, energy saving and possibility of implementation of advanced digital technologies.


2003 ◽  
Vol 87 (7-8) ◽  
pp. 251-262 ◽  
Author(s):  
A. R. Spitze ◽  
D. L. Wong ◽  
Q. R. Rogers ◽  
A. J. Fascetti
Keyword(s):  

2021 ◽  
pp. 1-16
Author(s):  
S. Espinosa Diaz ◽  
S. Speelman ◽  
R. Moruzzo ◽  
H. De Steur

While it is recognised that insect farming as an alternative feed production system can yield substantial benefits for rural communities, farmers will ultimately have to decide whether to adopt these systems or not. This study aims to understand the factors that influence the intention of farmers to adopt insect farming for animal feed in the context of a developing country. Building upon two well-established theories (theory of planned behaviour and technology acceptance model), a survey was administered with 100 small-scale farmers in the region of Santander, Colombia. Findings demonstrate that the majority of farmers are positively oriented towards the implementation of this alternative feed production strategy. Both psychological and technology-oriented aspects related to this innovative practice play a crucial role in decision-making of small-scale farmers. Thereby, adoption intention was mainly determined by their subjective norms and perceived ease of use, with education and importance of feed attributes as significant external variables.


2020 ◽  
Vol 3 (1) ◽  
pp. 31-57
Author(s):  
Priyaranjan Mallick ◽  
Kamalakanta Muduli ◽  
Jitendra Narayan Biswal ◽  
John Pumwa

Demand for poultry meat and eggs is increasing at a faster pace due to its good quality, nutritive values, and reasonable price. With the growing demand for egg and poultry meat, the demand for poultry feed is also increasing. Most of the feed ingredients which are used in poultry feed are also used for human nutrition. So these major feed ingredients and cumulatively poultry feed are facing market competition with increased cost. This study proposed linear programming (LP) technique to minimize the feed cost for small scale poultry farms. It employs locally available feed ingredients to formulate the broiler starter and finisher feed mix. The dietary nutrient requirement for broiler starter and finisher stage were determined from the prescribed standard specifications by Indian standard institutes and National Research Centers, Indian Council of Agricultural Research (ICAR). Sixteen feed ingredients were selected to formulate the optimal feed mix to minimize the total cost of feed mix subject to the essential nutrient constraints. Microsoft excel solver was used for the formulation of liner programming model and optimal feed mix for broiler starter and finisher were obtained.


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