scholarly journals Early Immunocastration of Pigs: From Farming to Meat Quality

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 298
Author(s):  
Daniela Werner ◽  
Lisa Baldinger ◽  
Ralf Bussemas ◽  
Sinje Büttner ◽  
Friedrich Weißmann ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Meat Quality ◽  
Animal Behavior ◽  
Production Performance ◽  
Boar Taint ◽  
Aggressive Interactions ◽  
Fat Quality ◽  
Slaughter Performance ◽  
Main Components

The study aimed to test a very early immunization of pigs to prevent boar taint with regard to its practicability and influence on production performance, its reliability in ensuring good meat and fat quality, and animal welfare. Immunization was already conducted at piglet production stage and could be easily integrated into routine vaccination (week 3) and weaning practices (week 7). The fattening and slaughter performance of the animals was not affected by the immunization regime and was within the usual range. In addition, there were no abnormalities in animal behavior and the prevalence of injuries caused by aggressive interactions. All animals were classified as infertile on the basis of the histological examination of the testicles. However, the testosterone levels measured at slaughter were significantly higher in animals of the early immunization regime than in animals subjected to the standard immunization regime. Androstenone and skatole levels as the main components of boar taint were, on average, higher and varied to a greater extent in early immunized animals. Furthermore, the comparison of the immunization scheme did not result in significant differences for meat quality and for fatty acid composition.

A comparison of slaughter performance and meat quality of pigs immunised with a gonadotrophin-releasing factor vaccine against boar taint with physically castrated pigs

2012 ◽  
Vol 52 (10) ◽  
pp. 911 ◽  
Author(s):  
Y. L. Yuan ◽  
J. L. Li ◽  
W. H. Zhang ◽  
C. Li ◽  
F. Gao ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Meat Quality ◽  
Subcutaneous Fat ◽  
Boar Taint ◽  
Inosine Monophosphate ◽  
Slaughter Performance

The objective of this study was to evaluate the effect of vaccination against gonadotropin-releasing factor (GnRF) on carcass characteristics and meat quality and back fat quality. In total, 400 healthy male pigs were randomly assigned into two treatment groups: physically castrated males (CM) and vaccinated males (IM). CM pigs were physically castrated within 3 days of age. IM pigs received the GnRF vaccine twice, at 14 and 21 weeks of age. At the end of the experiment, 20 pigs of each treatment were weighed individually and slaughtered at 25 weeks of age. The longissimus muscle was collected to evaluate the meat quality including pH, drip loss, shear force, cooking loss, intramuscular fat, fatty acid composition and inosine monophosphate. Subcutaneous fat was sampled to evaluate fatty acid composition. IM pigs had a lower dressing percentage and were leaner (P < 0.01). The inosine monophosphate content was higher in pork from IM pigs than from CM pigs (P < 0.05). IM pigs had a higher content of polyunsaturated fatty acids in longissimus muscles than CM pigs (P < 0.01), mostly because of the higher linoleic acid content (P < 0.01). IM pigs had higher levels of unsaturated fatty acids in subcutaneous fat than CM pigs (P < 0.01), mostly because of the higher linoleic acid and linolenic acid (P < 0.01) and the lower myristic acid content (P < 0.01). There were no adverse effects of the GnRF vaccine on slaughter performance and meat quality of pigs. These results suggest that GnRF vaccine administered to pigs increases the inosine monophosphate content in longissimus muscles and the content of polyunsaturated fatty acids in longissimus muscles and back fat. Consequently, vaccination with Improvac for boar taint control will provide a good alternative to physical castration of male pigs.

Influence of weaning on carcass, fatty acid composition and meat quality in intensive lamb production systems

1995 ◽  
Vol 1995 ◽  
pp. 87-87
Author(s):  
C. Sanudo ◽  
I. Sierra ◽  
J.L. Olleta ◽  
L. Martin ◽  
M. Campo ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Meat Quality ◽  
Acid Composition ◽  
Milk Production ◽  
Production Systems ◽  
Eating Quality ◽  
Free Access ◽  
Fat Quality ◽  
Mediterranean Countries

In Mediterranean countries weaning is an important decision both in meat and milk production systems. In previous work, using the Lacaune milk breed, unweaned lambs produced meat of better eating quality. In this study our aim was to determine the effect of weaning on carcass, meat and fat quality in a breed with a smaller milk production and in animals with free access to concentrate practically from birth.

scholarly journals Production Performance of Moina macrocopa (Straus 1820) (Crustacea, Cladocera) Cultured in Different Salinities: The Effect on Growth, Survival, Reproduction, and Fatty Acid Composition of the Neonates

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 105
Author(s):  
Amirah Yuslan ◽  
Sharifah Najuwa ◽  
Atsushi Hagiwara ◽  
Mazlan A. Ghaffar ◽  
Hidayu Suhaimi ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Production Performance ◽  
Reproduction Rate ◽  
Moina Macrocopa ◽  
Polyunsaturated Fatty Acid Content ◽  
Survival And Reproduction

Salinity is a known factor in shaping population dynamics and community structure through direct and indirect effects on aquatic ecosystems. Salinity changes further influence food webs through competition and predation. The responses of Moina macrocopa (Cladocera) collected from Setiu Wetland lagoon (Terengganu) was evaluated through manipulative laboratory experiments to understand the ability of M. macrocopa to tolerate high salinity stress. Specifically, the fatty acid composition, growth, survival, and reproduction of this cladocerans species was examined. Sodium chloride (NaCl) as used in the treatments water with the concentration 0, 4, 6, 8, 12, and 15 salinity. Fatty acid levels were determined using Gas Chromatography and Mass Spectrophotometry (GC-MS). The results indicated that optimal conditions produced the highest fatty acid content, especially the polyunsaturated fatty acid content, such as EPA (eicosapentaenoic acid), ALA (alpha-linoleic acid), ARA (arachidonic acid), and DHA (docosahexaenoic acid). Furthermore, M. macrocopa survival was best at salinity 0, with a percentage of 98%, whereas the opposite occurred at salinity 15, with approximately 20% of viable animals surviving. Besides, M. macrocopa also showed the highest reproduction rate at salinity 0 (e.g., average initial age of reproduction, 4.33 ± 0.58 days) compared with other salinities level. Interestingly, the difference in growth at different salinities was not evident, an unusual finding when considering adverse effects such as osmoregulation pressure on the organism. Based on the results, we conclude that M. macrocopa can only tolerate salinity below salinity 8 and cannot withstand stressful environmental conditions associated with salinities above 8.

scholarly journals Effect of a Rumen-Protected Microencapsulated Supplement from Linseed Oil on the Growth Performance, Meat Quality, and Fatty Acid Composition in Korean Native Steers

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1253
Author(s):  
Chae-Hyung Sun ◽  
Jae-Sung Lee ◽  
Jalil Ghassemi Nejad ◽  
Won-Seob Kim ◽  
Hong-Gu Lee
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Growth Performance ◽  
Meat Quality ◽  
Acid Composition ◽  
Linseed Oil ◽  
Control Group ◽  
Ruminal Fluid

We evaluated the effects of a rumen-protected microencapsulated supplement from linseed oil (MO) on ruminal fluid, growth performance, meat quality, and fatty acid composition in Korean native steers. In an in vitro experiment, ruminal fluid was taken from two fistulated Holstein dairy cows. Different levels of MO (0%, 1%, 2%, 3%, and 4%) were added to the diet. In an in vivo experiment, eight steers (average body weight = 597.1 ± 50.26 kg; average age = 23.8 ± 0.12 months) were assigned to two dietary groups, no MO (control) and MO (3% MO supplementation on a DM basis), for 186 days. The in vitro study revealed that 3% MO is an optimal dose, as there were decreases in the neutral detergent fiber and acid detergent fiber digestibility at 48 h (p < 0.05). The in vivo study showed increases in the feed efficiency and average daily gain in the 3% MO group compared to the control group on days 1 to 90 (p < 0.05). Regarding meat quality, the shear force produced by the longissimus thoracis muscle in steers from the 3% MO group was lower than that produced by the control group (p < 0.05). Interestingly, in terms of the fatty acid profile, higher concentrations of C22:6n3 were demonstrated in the subcutaneous fat and higher concentrations of C18:3n3, C20:3n3, and C20:5n3 were found in the intramuscular fat from steers fed with 3% MO (p < 0.05). Our results indicate that supplementation with 3% MO supplements improves the growth performance and meat quality modulated by the omega-3 fatty acid content of meat in Korean native steers.

Polymorphism in the SCD gene is associated with meat quality and fatty acid composition in Iranian fat- and thin-tailed sheep breeds

2016 ◽  
Vol 188 ◽  
pp. 81-90 ◽  
Author(s):  
Mohsen Aali ◽  
Hosein Moradi-Shahrbabak ◽  
Mohammad Moradi-Shahrbabak ◽  
Mostafa Sadeghi ◽  
Hamid Kohram
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Meat Quality ◽  
Acid Composition ◽  
Sheep Breeds

scholarly journals Lamb meat quality and intramuscular fatty acid composition as affected by concentrates including different legume seeds

2011 ◽  
Vol 10 (2) ◽  
pp. e18 ◽  
Author(s):  
Massimiliano Lanza ◽  
Carla Fabro ◽  
Manuel Scerra ◽  
Marco Bella ◽  
Renato Pagano ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Meat Quality ◽  
Acid Composition ◽  
Lamb Meat ◽  
Legume Seeds

scholarly journals Comparison of Meat Quality and Fatty Acid Composition of Longissimus Muscles from Purebred Pigs and Three-way Crossbred LYD Pigs

2016 ◽  
Vol 36 (5) ◽  
pp. 689-696 ◽  
Author(s):  
Yeong-Seok Choi ◽  
Jin-Kyu Lee ◽  
Ji-Taek Jung ◽  
Young-Chul Jung ◽  
Jong-Hyun Jung ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Meat Quality ◽  
Acid Composition

scholarly journals Analysis of Fatty Acid Composition in the Seed and flower oil of Syrian Ligustrun Lucidum and olive oil

2014 ◽  
Vol 11 (3) ◽  
pp. 1107-1112
Author(s):  
Baghdad Science Journal
Keyword(s):  
Gas Chromatography ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Olive Oil ◽  
Acid Composition ◽  
Unsaturated Fatty Acid ◽  
Seed Oil ◽  
Promising Application ◽  
Main Components ◽  
Unsaturated Oil

The fatty acid composition in the seed and flower of Ligustrun lucidum and olive oil was studied by Gas Chromatography. Results showed that the main components of seed oil were Palmitic (C16:0) 5,893% ,Palmitolic acid (C16:1)0,398%, Steaeic (C18:0)2,911% ,Oleic (C18:1)74,984%,Linoleic (C18:2) 12,959%,and Linolenic (C18:3) 0,997%. The proportion of unsaturated fatty acid was above 89,338%, so the seed oil of L. lucidum ait belonged to unsaturated oil which possessed promising application. The components of flower oil were Palmitic (C16:0) 65,674% ,Palmitolic acid (C16:1)6,516%, Steaeic (C18:0)2,641% ,Oleic (C18:1)14,707%,Linoleic (C18:2) 3,113%,and Linolenic (C18:3) 2,70%. The proportion of unsaturated fatty acid and saturated fatty acid was above 26,406%, 68,315%,respectively so the flower oil of ligustrun lucidum belonged to saturated oil . the main components of olive oil were Palmitic (C16:0) 13,364% ,Palmitolic acid (C16:1)0,834%, Steaeic (C18:0)3,860% ,Oleic (C18:1) 68,668%,Linoleic (C18:2) 12,586%,and Linolenic (C18:3) 0,687%. The proportion of unsaturated fatty acid was above 82,775%, so the olive oil of ligustrun lucidum ait belonged to. These values of seed oil are very similar to that found in the olive oil.

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