Performance and plasma urea nitrogen of immunocastrated males pigs of medium genetic potential
Journal Title: Revista MVZ Cordoba - Year 2015, Vol 20, Issue 2
Abstract
Objective. A study was carried out to evaluate the performance and the plasma urea nitrogen (PUN) of male pigs of medium genetic potential for lean meat deposition in carcass, which underwent immunocastration. Materials and methods. Forty-five seventy-days old Large White x Landrace crossbred were used. The pigs were distributed in a randomized design in three treatments: castrated males, females and immunocastrated males. Each treatment group was replicated three times with five pigs per replicate. The trial period was of 70 days, divided into phases of growing (70 to 110 days old) and finishing (111 to 140 days old). The pigs were weighed four times: at the beginning of the trial, at the first immunocastration vaccine dose (80 days old), at the second immunocastration vaccine dose (110 days old) and just before slaughter (140 days old). Blood samples were taken on the same day that the animals were weighed. Results. Between 80 and 110 days old, there was an increase in PUN value, only for castrated males and females. No differences were found in weight gain between the studied groups within the periods. Immunocastrated males had lower feed intake than females and these had a lower feed intake than castrated males. To 110 days old, immunocastrated animals showed feed conversion ratio similar to females and better than castrated males. However, after the second dose of the vaccine, feed conversion was similar between groups. Conclusions. The benefits of immunocastration are prominent in animals with low to medium genetic potential.
Authors and Affiliations
Fabiana R Caldara, Ph. D *| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil.Correspondence: fabianacaldara@ufgd.edu.br, Rita KS Santos, M. Sc| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil., Luan S Santos, B. Sc| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil., Luciana Foppa, B. Sc| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil., Irenilza A Nääs, Ph. D| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil., Rodrigo G Garcia, Ph. D| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil., Simone P Machado, B. Sc| Universidade Federal da Grande Dourados (UFGD), Faculdade de Ciências Agrárias (FCA), Zip Code 79823-350, Dourados, MS, Brazil.
Keywords
Related Articles
- EP ID EP3402
- DOI -
- Views 446
- Downloads 18
Genetic variability of broodstocks of restocking programs in Brazil
Objective. The aim of this study was evaluate the genetic diversity of the following broodstocks: piapara (Leporinus elongatus), dourado (Salminus brasiliensis), jundiá (Rhamdia quelen) and cachara (Pseudoplatystoma fasc...
Effect of controlled-release of nitrogen on fermentation and in situ digestibility of Cynodon dactylon
Objective. To evaluate the effect of a controlled-release non protein nitrogen source (CRNpn) on some parameters of rumen fermentation and in situ digestibility of Cynodon dactylon. Materials and methods. Four rumen fi...
Productivity and Composition of Fatty Acids in Chicks fed with Azadirachta indica A. Juss
Objective. Evaluate the productivity and composition of fatty acids in chicks fed diets enriched with neem Azadirachta indica A. Juss seed flour. Materials and methods. 80 mixed broiler chicks of Arbor Acres stock and le...
Relationship between type traits and milk production in Holstein cows from Antioquia, Colombia
Objective. To evaluate the relationship between type traits and milk production in Holstein cows from Antioquia, Colombia. Materials and methods. A total of 24 type traits and milk production from 3102 cows under an offi...
Aglepristone efficiency with and without the canine pyometra cloprostenol
Objective. Evaluate the effectiveness of aglepristone with and without cloprostenol for treating canine pyometra. Materials and methods. Ten female French Bulldogs between 3-8 years of age diagnosed with pyometra were di...