scholarly journals Effects of age and live weight on fat 5α-androstenone levels in young boars fed two planes of nutrition

1987 ◽  
Vol 27 (2A) ◽  
pp. 413-422 ◽  
Author(s):  
M. BONNEAU ◽  
G. CONSEIL ◽  
Françoise GIOVANNI ◽  
Anne-Marie MOUNIER ◽  
Y. PEIGNIER
Keyword(s):  
Live Weight ◽  
Young Boars

Effects of exogenous porcine somatotropin on performance, testicular steroid production and fat levels of boar-taint-related compounds in young boars

1992 ◽  
Vol 72 (3) ◽  
pp. 537-545 ◽  
Author(s):  
M. Bonneau ◽  
W. J. Meadus ◽  
E. J. Squires
Keyword(s):  
Feed Efficiency ◽  
Genital Tract ◽  
Young Male ◽  
Live Weight ◽  
Boar Taint ◽  
Large White ◽  
Hormone Synthesis ◽  
Porcine Somatotropin ◽  
Young Boars ◽  
Related Compounds

Large White × Pietrain boars were administered 0 or 5 mg recombinant porcine somatotropin (pST) daily between 68 and 105 kg live weight in an investigation of the effects of pST treatment on growth performance, carcass traits, genital-tract development, steroid-hormone synthesis, and fat skatole and androstenone levels in young male pigs. Growth rate was not affected by pST treatment, daily feed intake was decreased 9% (P < 0.05), and feed efficiency was improved 7% (P < 0.01). Muscle content of the carcass was increased from 57.7% to 59.7%, and fat content was reduced from 18.8% to 15.7% (P < 0.001). Genital-tract development, testicular androgen and 16-androstene biosynthesis rates and skatole levels in fat were not affected by pST treatment. Androstenone levels in fat were reduced from 0.66 μg g−1 in control animals to 0.35 μg g−1 in pST-treated animals (P < 0.001). The results of the present experiment indicate that pST treatment of boars of a lean genotype significantly improves the performance of the animals and may contribute to a reduction in the incidence of boar taint. Key words: Boar taint, somatotropin, skatole, androstenone, pigs

scholarly journals MORPHOFUNCTIONAL FEATURES OF POLTAVA MEATY BREED PIGS’ EPIDER-MAL BARRIER DEPENDING ON THEIR GENOTYPE

2021 ◽  
Vol 246 (2) ◽  
pp. 43-48
Author(s):  
N.A. Garskay ◽  
◽  
L.G. Peretiatko ◽  
◽  
Keyword(s):  
Live Weight ◽  
Epidermal Barrier ◽  
Breeding Work ◽  
Young Boars ◽  
Breeding Groups ◽  
The Given ◽  
Structure And Functions

The accumulation of knowledge about the structure and functions of the epidermis will make it possible to solve the most important practical tasks of forming the animals’ productivity and health. Two breeding groups have been researched: 1) purebred young boars, 2) young boars with the blood of Finnish Landrace. The studies were carried out when the animals reached live weight of 100 kg, and the control slaughter was made. The results of the Poltava Meaty Breed pigs’ skin epidermal barrier research made it possible to trace significant differences in the ratio of the main epidermis layers in animals of different genotypes. The genotype influence was 15.45 %. An-imals with the blood of the Finnish Landrace have lower biological possibilities for life in the given climatic and technological conditions, that is, they are less promising for further breeding work.

Backfat thickness of young boars for meat production

1984 ◽  
Vol 8 ◽  
pp. 102-102
Author(s):  
A. L. Lightfoot
Keyword(s):  
Management Practices ◽  
Live Weight ◽  
Backfat Thickness ◽  
Feed Consumption ◽  
Meat Production ◽  
Feeding Regimes ◽  
Young Boars

Concern is being expressed about the marketing of over-lean carcasses, especially from young boars. Experiments at Terrington have tested the effects of various management practices, feeding regimes and slaughter weights on the performance and backfat thickness of young boars reared for meat production.Pigs were kept in groups of mixed castrates and gilts, mixed boars and gilts, gilts only and boars only. Start of test was about 35 kg live weight and three different slaughter weights were selected to represent the main carcass types: cutters — 81 kg, baconers — 93 kg and heavies — 110 kg live weight. Backfat thickness increased with age, weight at slaughter and total feed consumption. Feed consumed by boars was 140 kg for cutters, 181 kg for baconers and 250 kg for heavies. P1, + P3 (mm) of boars was 23.7, 25.9 and 32.6 for the three slaughter weights, respectively.

scholarly journals The Influence of Technological Stress on the Protective Properties of Pig Skin Depending on Age

2021 ◽  
Vol 937 (3) ◽  
pp. 032008
Author(s):  
Natal`ya Garskaya ◽  
Sergey Tresnitskiy ◽  
Irina Garanovich ◽  
Irina Ladysh ◽  
Ale-ksandr Yenin ◽  
...  
Keyword(s):  
Stratum Corneum ◽  
Age Groups ◽  
Live Weight ◽  
The Body ◽  
Protective Function ◽  
Protective Properties ◽  
Pig Skin ◽  
Significant Difference ◽  
Young Boars ◽  
Technological Stress

Abstract The skin performs the most important physiological functions of the body. The protective function is the main among them. This article presents the results of studies of how the technological stress affects the protective properties of pig skin depending on the animals’ age. The parameters of the skin, characterizing the epidermis, the main protective skin barrier, were studied in domestic Poltava Meat Breed pigs of different ages. The skin epidermis in animals of all studied age groups is actively involved in the performance of protective functions. Upon reaching the live weight of 100 kg, the young boars of the breed experience a great technological load, which causes tension in the skin protective systems and, thus, activation of these systems. This results in greater values of the epidermis thickness comparing to adult boars (by 17.22% (p⩽0.05)) due to an increase in its inner (underlying) layers (by 33.05% (p⩽0.001)). The stratum corneum of the young boars’ epidermis is thinner but more dense, with pronounced sudanophilia. With pigs reaching their adulthood, the tension in their protective factors decreases and stabilizes. In adult boars, the stratum corneum is thicker (a significant difference is 6.82 μm or 28.14%), but it is more susceptible to keratinization, is looser and has pronounced fibrillation. These changes probably mark the already developed adaptation to the existing natural and technological conditions.

A case study on year round fodder production scheme for smallholder dairy producers in Bangladesh

2020 ◽  
Vol 26 (1-2) ◽  
pp. 79-102
Author(s):  
NR Sarker ◽  
F Tabassum D Yeasmin ◽  
MA Habib ◽  
MR Amin
Keyword(s):  
Dairy Cows ◽  
Family Income ◽  
Live Weight ◽  
Production Model ◽  
Variable Cost ◽  
Small Scale ◽  
Common Salt ◽  
Cost Ratio ◽  
Her Family ◽  
Fodder Production

This study was undertaken to develop a year round fodder production model for small scale dairy farmers. Five pregnant dairy cows of Red Chittagong Cattle (RCC) genotype were selected. For rearing five cows, 66 decimal of land was selected from existing fodder plots under Pachutia Research Farm at Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka. The selected land was divided into two parts (33 decimal in each). One part was brought under perennial (Napier-4 and Splendida) and the 2nd part of land for seasonal (Maize & Matikalai) fodder production. Data on live weight and live weight gain of cows, birth weight of calves, feed intake, milk production, actual biomass yield for both perennial and seasonal fodder, yearly manure production were recorded and calculated. Napier-4 grass, splendida, maize, straw, silage were supplied to the experimental cows according to the seasonal availability in different months. Concentrate mixture were also supplied consisting of wheat bran, kheshari (red gram), soybean meal, maize crushed, til oil cake, DCP and common salt. Economics of the model revealed that considering the sale of milk, calves and manure and cost included only feed and land leased, a farm/family rearing 5 indigenous dairy cows with his/her family labours, he/she could earn around BDT 98 thousand in a year (1$ = 85 BDT) and the benefit cost ratio of the model on total variable cost and total cost were 1.86 and 1.66, respectively. Therefore, it may be recommended that a farmer having 5 adult dairy cows with 66 decimal land under fodder cultivation may earn substantial share of his/her family income as small-scale rural dairying. Bang. J. Livs. Res. Vol. 26 (1&2), 2019: P. 89-102

INFLUENCE OF HIGH-PROTEIN FEED ADDITIVE ON THE PRODUCTIVITY OF THE MEAT BULL-CALVES

2019 ◽  
Vol 2019 (3) ◽  
pp. 6-11
Author(s):  
Батырхан Абилов ◽  
Batyrkhan Abilov ◽  
Лариса Пашкова ◽  
Larisa Pashkova
Keyword(s):  
Hematological Parameters ◽  
Physiological State ◽  
Average Daily Gain ◽  
Live Weight ◽  
Feed Additive ◽  
North Caucasus ◽  
Agricultural Enterprise ◽  
Bull Calves ◽  
Economic Indices ◽  
High Level

The article presents the data obtained as a result of carrying by employees of the Research Institute of sheep and goat breeding, a branch of the FSBSI "North Caucasus FARC", the scientific and economic experience to study the efficiency of a new fodder additive "Organic" on the productive and physiological indices of bull-calves during the completion of growing in the conditions of the farm "Pata" agricultural enterprise in the Karachay-Cherkessia Republic. The statement of the experience and all researches were carried out according to generally accepted methods. In the course of the experiment, the following indices were studied: the chemical compound of forages, the dynamics of a live weight gain in the experimental stock, hematological parameters, control slaughter data, economic indices. Completed researches have shown positive result from the use of the fodder additive "Organic" in bull-calves diets: an increase in the average daily gain of live weight by 25%, a slaughter yield by 1% and a high level of profitability – 27%. Thus, the additional introduction of "Organic" in a diet of young horned cattle in the 2nd experimental group promoted more intensive metabolism, stabilization of a physiological state, increase in productivity and, as a consequence, profitability of beef production. Researches in this direction reveal the latent fodder reserves promoting increase in the productivity of agricultural animals.

Influence of DAFS-25+polizon composition on blood and functional state of liver of steers at fattening

2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  
Keyword(s):  
Functional State ◽  
White Blood Cells ◽  
Live Weight ◽  
The Body ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
The Impact ◽  
Experimental Group ◽  
Stimulation Of

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.

Acute toxicity of an insecticidal little containing ivermectin and fipronil for white mice

2020 ◽  
pp. 31-32
Author(s):  
Mikhail A. Levchenko ◽  
◽  
Natalia A. Sennikova ◽  
Keyword(s):  
Acute Toxicity ◽  
Lethal Dose ◽  
Live Weight ◽  
Acute Oral Toxicity ◽  
Oral Toxicity ◽  
Toxicological Assessment ◽  
Russian Research Institute ◽  
Veterinary Entomology ◽  
Russian Research

Toxicological assessment is a mandatory research step in the development of new insecticidal drugs. At the All-Russian Research Institute of Veterinary Entomology and Arachnology, a prototype of the insecticidal bait Mukhnet IF was obtained with an active ingredient content of 0.06% ivermectin and 0.015% fipronil, which showed a highly effective effect against houseflies. This work presents the results of the study of acute oral toxicity of the above agent. For this, male white mice with a live weight of 16-26 g were selected. They were kept on a starvation diet for one day in individual houses with water. The drug was given in mg/kg body weight the next day. A total of 33 doses have been tested, ranging from 100 mg/kg to 40,000 mg/kg. The animals were observed for 14 days. According to the research results, it was revealed that at doses up to 20,000 mg/kg there were no signs of intoxication, but when tested at 25,000 mg/kg in some mice, these signs were noted, and at 30,000, 35,000 and 40,000 mg/kg deaths were recorded 20±10, 45±30 and 60±20%, respectively. It was not possible to test the drug over the last above dose due to incomplete eaten by mice. According to the degree of danger for warm-blooded animals, the drug belongs to the 4th class of low-hazard drugs (average lethal dose of 5000 mg/kg or more) in accordance with the classification of GOST 12.1.007-76. When analyzing the literature data on the toxicological characteristics of preparations containing ivermectin and chlorfenapyr, it was revealed that the insecticidal agent in its acute toxicity for warm-blooded animals is comparable to known analogues.

NEW GENERATION FEED ADDITIVE IN POULTRY BREEDING

1970 ◽  
pp. 67-69
Author(s):  
L. I. Naumova ◽  
М. Т. Klychnikov ◽  
N. F. Klychnikova
Keyword(s):  
Laying Hens ◽  
Far East ◽  
Brown Seaweed ◽  
Test Group ◽  
Live Weight ◽  
Production Quality ◽  
Feed Additive ◽  
Poultry Production ◽  
Omega 3 ◽  
Mineral Substances

The analysis of different doses of complex feed additive to poultry ration have been made. The influence of new feed additive with bioresources of the Far East use on productive poultry indexes, on production quality and digestibility of nutritious matters of mixed feed has been studied. Patrinia scabiosifolia, Acanthopanax sesseliflorum, cones of cedare nut husk, brown seaweed, macro- and microelements, vitamins were the object of research. As a result of these researches author presents more effective norms of complex feed additive use in poultry farming of Khabarovsk Kray. The recipe of feed additive from local vegetable resources and complex of vitamins and minerals for use in laying hens nutrition was worked out. The aim of this work was to rise zootechnic and economic indexes of poultry production. The introduction of complex feed additive in ration influenced positively on the digestibility, raised the content of Omega-3 fat acid in egg of laying hens. The increase of Omega-3 fat acid quantity promotes decrease of cholesterol in yolk of egg. In the experimental groups there was a more intensive use of nutrients in diet, mainly due to raw protein, fats, mineral substances – calcium and phosphorus. The use of a new feed additive had a positive effect on the hatchability of eggs, the development of internal organs (heart, liver) and the live weight of chicks obtained from the eggs of chickens in experimental groups. Additionally, the content of mineral substances (calcium, potassium, phosphorus) in the egg of test group was higher than in the control on average by 2.3-5.1%.

Efficacy of anthelmintic Eprimek against gastrointestinal nematodes in sheep

2020 ◽  
Vol 14 (4) ◽  
pp. 99-103
Author(s):  
V. I. Kolesnikov
Keyword(s):  
Live Weight ◽  
Gastrointestinal Nematodes ◽  
Production Environment ◽  
Control Groups ◽  
The North ◽  
Helminth Eggs ◽  
Nematode Eggs ◽  
Flotation Technique ◽  
And Control ◽  
Experimental Group

The purpose of the research is studying the efficacy of Eprimek (Eprinomectin) against gastrointestinal nematodes in sheep.Materials and methods. A commercial experiment to study the antiparasitic efficacy of Eprimek was carried out in June 2020 on 300 lambs of the North Caucasian breed in a private flock of Filimonovskaya Village, Izobilnensky District, the Stavropol Territory, which were divided into two groups. The experimental group of lambs (290 animals) was injected Eprimek subcutaneously at the earset at a dose of 1 ml/50 kg of live weight (10 mg of Eprinomectin in 1 ml), and 10 lambs were not treated; they were used as control. We collected feces from the lambs of the experimental and control groups before administration of the drugs and after 15 and 30 days. Fecal samples were examined by the flotation technique with a saturated solution of ammonium nitrate with counting nematode eggs in 1 g of feces. The results were processed statistically.Results and discussion. Eprimek showed a decrease in the number of excreted helminth eggs from 225.1±28.2 to 4.1±2.3 in production environment at a dose of 1 ml/50 kg of live weight, according to coprological studies on the 15th day after treatment in the experimental group of lambs. The efficacy was 98.2%, and 70% of the animals were free from the infection. The intensity of infection of the control lambs by gastrointestinal nematodes was 131–151 eggs per 1 g of feces at 100% prevalence.

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