Banca de DEFESA: MÁRCIA TONETTO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MÁRCIA TONETTO
DATE: 10/07/2020
TIME: 08:30
LOCAL: Webconferência pelo Google Meet: https://meet.google.com/kpz-kikr-nrg?hs=122&authuser=0
TITLE:

Influence of corn particle size and feed physical form on zootechnical performance, digestive tract morphometry and nutrient digestibility in broilers.

KEY WORDS:

Feed, GMD, villi, crypts, gizzard.

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

Nutrition is one of the most important factors in poultry production, either by cost or animal response to feed quality. The objective of this study trial was to verify the influence of the geometric mean diameter (GMD) of the corn particle and the physical form of the diet on zootechnical performance, digestive tract morphometry and digestibility of feed nutrients in broilers. Were evaluated 3600 male ross 91 broilers from 14 to 39 days of age, distributed according to a completely randomized design in a 2 X 4 factorial scheme, two physical forms of feed (mashed and pelletized) with four different corn granulometry (GMD1: 819-824; GMD2: 1001-1084; GMD3: 1154-1248; GMD4: 1250-1312). All data were submitted to the Shapiro Wilk test and later ANOVA with a 95% confidence level (P>0.05). Pelletized diets improved weight gain WG (2.37 ± 5.25 kg) and feed conversion rate FCR (1.593 ± 0.002) of birds. From GMD2, regardless of the physical form of the diet, the animals presented better results of GP and AC (P<0.05). The weight of the gizzard, depth of ileum crypt and the ratio of villi height and crypt depth were better in birds fed with mashed feed and with GMD2 interval (P<0.05). Regarding the height of the villus of the ileum there was a difference of 17.04 mm in birds fed a diet of the pelletized diet, and analyzing only GMD, the GMD3 interval stood out as being better. No influence the sinze of the intestine neither on nutrient digestibility was observed, regardless of the treatment that the broilers were submitted. Thus, birds fed pelletized diets obtained better zootechnical performance, and corn granulometry from GMD2, presented higher GP and better FRC, regardless of physical f of the feed.  However, the diets with GMD2 showed better results for digestive tract morphometry of broilers.

BANKING MEMBERS:
Externo à Instituição - SEBASTIÃO A. BORGES - UNESP
Externo à Instituição - VINICIUS GONSALES SCHRAMM - UFPR
Presidente - 2277465 - FABIANA MOREIRA
Interna - 1085177 - VANESSA PERIPOLLI