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 476
- Downloads 18
Trophic ecology of Liso (Rhamdia quelen Quoy & Gaimard, 1824) in the Sinu river, Colombia
Objective. To study the trophic ecology of Liso in the Sinu river as a contribution to the knowledge of its biology and ecology, preservation in wild environment and the management of fishery in the basin. Materials and...
¿Are the colombian zootechnics and veterinary sciences prepare for the future?: A vision from Colombia
A review of the Veterinary Medicine and Zootechnics is done aiming to understand their significance and performance in the current and future society, with main focus in the Colombian reality. The review shows the compet...
Swine leptospirosis: Serological prevalence inproducing establishments in Argentina Republic
Objective. To detect the presence of antibodies to leptospira sp in pigs that didn’t show clinical symptoms, of swine production farms located throughout Argentina. Materials and methods. The location of farms and sample...
Estimation of Anadara tuberculosa genetic diversity in five mangroves from Tumaco, using Cytochrome oxidase I enzyme
Objective. To estimate the genetic diversity of the Anadara tuberculosa en five mangrove swams of Tumaco, Nariño, Colombia using as a mitocondrial molecular marker the cytochromo oxidase sub-unit I (COI). Materials and m...
Tick loads in Bos taurus cattle grazing in two contrasting production systems
Objectives. To relate the effect of biotic and abiotic factors on Rhipicephalus (Boophilus) microplus tick loads on cows grazing either in intensive silvopastoral systems (ISS) (Lucerna) or in grass pastures associated w...