Banca de DEFESA: BERNARDO GESING

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : BERNARDO GESING
DATE: 28/07/2021
TIME: 09:00
LOCAL: Webconferência via Google Meet - meet.google.com/jfs-crno-bfu
TITLE:

Evaluation of the effect of blood plasma in replacement or associated with antibiotics in piglets in the growth and finishing phase.

KEY WORDS:

Spray dried plasma; food conversion; weight gain; swine; production cost.

PAGES: 45
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUMMARY:

The use of antibiotics in animal production has been restricted to meet market demand, so research is currently being carried out to find alternatives, such as the use of probiotics and blood plasma. The aim of this work was to evaluate the effect of blood plasma in replacement or association with antibiotics on zootechnical and sanitary parameters. The treatment was used in strategic pulses, in the feeding of piglets in the growth and finishing phases. A total of 1,456 piglets were selected just after leaving the nursery and were evaluated for 122 days. The piglets were submitted to 4 treatments with 14 repetitions composed of 3 categories of initial weight at the entrance of the animals and evaluated in 2 genera. For treatments with inclusion, was used blood plasma (Spray Dried Plasma - SDP) from cattle. The treatments consisted of: feed without antibiotics and without PDS (T1), being the control group; feed with addition of the company's standard medication protocol and without inclusion of PDS (T2); feed plus the company's standard medication protocol associated with three pulses of PDS (T3); and feed with the addition of PDS without the addition of antibiotics (T4). Data were analyzed using the Statistical Analysis System software (SAS®, v.9.5, Inst. Inc., Cary, NC) and submitted to the Shapiro-Wilk normality test at 5% probability. Subsequently, the data were submitted to Analysis of Variance (ANOVA). The results indicated that T2 had the highest feed intake, with the average intake and feed conversion being 289.73 kg and 2.57 kg/kg (feed consumed/weight gained), respectively. Weight gain during the period of 0-122 days for T3 (114.12 kg) and T4 (114.2 kg) were higher than T1 (111.46 kg) (p<0.05). Furthermore, the antibiotic-based treatment associated with plasma (T3) showed a 7.76% increase in weight gain when compared to T1. There was no significant difference in the mortality rate of animals, regardless the treatment (p>0.05). Regarding health parameters, the diarrhea score and cough and sneezing index decreased over the weeks (p<0.05), with females having a higher rate (4.55%) of coughing and sneezing compared to males (3.73%) (P>0.05). The index for pneumonia and ulcer score presented by the piglets was not influenced by the treatments (P>0.05). Furthermore, cost analysis showed, no significant difference between treatments for feed costs and cost of injectable drugs per kg of animal. However, T1 had the lower total production cost when compared to other treatments (P>0.05). Piglets showed greater weight gain for the T3 when compared to the control group. The use of antibiotics in strategic pulses (T2), it favored feed intake but did not change the feed conversion of the animals. Despite this, the production costs only with the use of SPD (T4) was lower than that combined with antibiotics (T3), which could be an alternative to the withdrawal and/or reduction of these drugs as pulses in the animal feed.

BANKING MEMBERS:
Presidente - 2277465 - FABIANA MOREIRA
Externa à Instituição - LUCÉLIA HAUPTLI - UFSC
Externo à Instituição - Rafael Keith Ono