Hematology and serum biochemistry of broilers at the initial and growth stages submitted to different levels of digestible sulfur amino acids

Abstract

The objective of this study was to evaluate the effect of digestible methionine and cystine (Met + Cys) levels on the hematological and serum biochemical parameters of broiler chickens during the initial and growth stages. For this, 1,800 male chicks of the Coob 500 strain were used, with 900 chicks in the initial phase (1 to 21 days old) and 900 chicks in the growth phase (22 to 42 days old), distributed in a completely randomized design of five treatments with six replicates of 30 birds. The treatments consisted of 0.545, 0.616, 0.711, 0.782, and 0.853%; and 0.514, 0.571, 0.647, 0.704, and 0.761% digestible Met + Cys for “1 to 21” and “22 to 42” days of breeding, respectively. Results showed that digestible Met + Cys levels in broiler feed altered some hematological parameters (erythrocyte, hematocrit hemoglobin, total leukocytes, heterophile: lymphocyte) and serum biochemistry (uric acid, PST, total LDL, and TG). The digestible Met + Cys levels in the diet of broilers affected the hematological parameters and serum biochemistry, especially at higher levels. From the inclusion level 0.761 of Met + Cist in the broiler diet, red blood cells, hemoglobin and hematocrit changes begin to appear.

Hematologia e bioquímica sérica de frangos de corte suplementados com sulfatos de condroitina e de glucosamina na ração

“…Neither the isolated chondroitin and glucosamine sulfates nor their interaction influenced (p > 0.05) red blood cells, hemoglobin, hematocrit, TPP, or thrombocytes in the blood of the chickens by 21 or 42 days of age. The results found were similar to those reported by Carvalho et al (2020) in healthy chickens fed basal diets and reared under conditions similar to those described in our study. Noushi and Naji (2013) investigated the effects of glucosamine sulfate and glucosamine/chondroitin sulfates administered orally to mice for 30 days and did not find differences in red blood cell counts, which is similar to the results presented in this study.…”

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“…The presence of resistant starch (RS) in "aking-rice" is deduced to be the reason of high IP. RS is not only indigestible but also unhydrolyzed, preventing it from getting absorbed in the small intestine (Setiarto et al, 2015;Suloi, 2019) and, consequently, reducing the organ's metabolic burden (Carvalho et al, 2020;Lin et al, 2006;Setiarto et al, 2015;Tamzil, 2014). Sprinkling "akingrice" on feed ensures its higher consumption, which means more RS intake, since chickens eat more of it on the top layer contrasted to one mixed in the feed.…”

“…Since the feed was of good quality and the materials were healthy, it is apparent that the low nutrient absorptions in P0 and P2 were due to stress -heat stress, to be specific(Dayyani and Bakhtiari, 2013;Khalifa, 2014;Kusnadi, 2007;Li et al, 2015; Mohammed et al, 2021;Tamzil, 2014).The presence of resistant starch (RS) in "aking-rice" is deduced to be the reason of high IP. RS is not only indigestible but also unhydrolyzed, preventing it from getting absorbed in the small intestine(Setiarto et al, 2015;Suloi, 2019) and, consequently, reducing the organ's metabolic burden(Carvalho et al, 2020;Lin et al, 2006;Setiarto et al, 2015;Tamzil, 2014). Sprinkling "akingrice" on feed ensures its higher consumption, which means more RS intake, since chickens eat more of it on the top layer contrasted to one mixed in the feed.…”

Stability of the Broiler Antibody Under Heat Stress Using Dry Rice

“…The decrease in nutrient intake may cause lack of nutrient such as protein and it causes the protein level in blood will be lower. Low protein level in the blood will reduce the livestock ability to form antibodies [13][14][15].…”