Influence of sex, age, and fasting on blood parameters and body, bursa, spleen and yolk sac weights of broiler chicks

Pires, Donna; Malheiros, Euclides Braga; Boleli, Isabel Cristina

doi:10.1590/s1516-635x2007000400005

Cited by 15 publications

(13 citation statements)

References 18 publications

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“…Hct levels were increased by up to 24% in chicks that had experienced a longer holding period. This is similar to the values of chicks that were fasted for 24 or 48 h fasted after pulling, which were higher than that of chicks fed after pulling (Pires et al, 2007). Hb was also found to increase with decreased BW, which happened with longer duration of holding period.…”

Section: Discussionsupporting

confidence: 78%

Physiological status of broiler chicks at pulling time and the relationship to duration of holding period

Tong

Demmers

Romanini

et al. 2015

Animal

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Newly hatched chicks may be held longer than 48 h and experience long periods of fasting in commercial hatcheries. Limited information is known about the physiological status of chicks in such situations, due to the difficulty of precisely recording time of hatch. This study investigated the effect of the time from hatch to pulling (holding period) on physiological measures/parameters in 109 broiler chicks. Fertile Ross 308 eggs were incubated in a custom built small-scale incubator. The individual hatching time of each focal chick was determined using eggshell temperature monitoring. At 'pulling' (512 h of incubation time), the quality of focal chicks was assessed using the chick scoring method and physiological parameters were measured including BW, organ (heart, liver and stomach) weights, blood values and plasma corticosterone level. The time from hatch to pulling varied from 7.58 to 44.97 h. Egg weight at setting was significantly correlated with chick BW and weight of organs at pulling, but had no effect on chick quality, blood values and plasma corticosterone. Relative BW at pulling was negatively associated with the duration of holding period ( P = 0.002). However, there was a positive correlation between relative stomach weight and the duration of the holding period ( P < 0.001). As the holding period duration increased, there was a trend that blood partial pressure of oxygen, haematocrit and haemoglobin also increased, and blood partial pressure of carbon dioxide, total carbon dioxide and bicarbonate decreased ( P < 0.05). A wide range of plasma corticosterone was observed from chicks that had experienced different durations of holding period. We conclude that shortening the hatch window and minimising the number of chicks that experience a long holding period before pulling may improve chick quality and physiological status, which may be due to unfavourable environmental conditions that include feed and water deprivation.

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Section: Discussionsupporting

confidence: 78%

Physiological status of broiler chicks at pulling time and the relationship to duration of holding period

Tong

Demmers

Romanini

et al. 2015

Animal

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“…Pires et al (2007) found that a 24-hour fasting period altered white blood cell population and red blood cell parameters, and decreased plasma glucose in broilers, but did not report differences between sex groups (female and male). Small decreases in plasma glucose were observed in lactating cows after 8-hour fasting (Chelikani et al, 2004) and in steers after 18 or 32 hours of deprivation (Galyean et al, 1981).…”

Section: Resultsmentioning

confidence: 78%

Hematological profile of beef cattle with divergent residual feed intake, following feed deprivation

Gomes

Siqueira

Ballou

et al. 2011

Pesq. agropec. bras.

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-The objective of this work was to characterize the hematological profiles of steers and bulls, according to residual feed intake (RFI), after feed deprivation. Twenty-month-old Nellore steers and bulls were fed feedlot diets for 70 and 56 days, respectively. RFI was calculated as the difference between actual feed intake and expected feed intake. More and less efficient steers and bulls, according to RFI, were subjected to 24 hours of food deprivation. Blood was sampled prior to and following the withdrawal period. Hematological analyses included total and differential white blood cell count, red blood cell count and morphology, and plasma glucose concentration. Variation in RFI did not influence plasma glucose concentration or blood cell profiles. Glucose concentrations in bulls decreased from 114 to 97 mg dL -1 , but remained unchanged in steers, and the neutrophil:lymphocyte ratio increased from 0.39 to 0.57 following deprivation. Hematological profiles do not differ between more and less efficient steers and bulls, according to RFI.

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“…In contrast, Pires et al (2007) and Iheukwumere and Herbert (2003) observed reduction in erythrocyte counts of water-restricted broilers, indicating that the intensity of the erythrocytic response elicited in a bird depends, to a large extent, on the breed and degree of water restriction to which a bird is subjected. The erythrocyte counts of NNK and OVB birds with free water access and those on restricted water intake were, however, lower than the 3.36 to 4.46 (310e 12 /l) range reported for Nigerian Naked Neck and 3.72 to 4.12 (310e 12 /l) for normal feathered ecotypes (Ladokun et al, 2008).…”

Section: Discussionmentioning

confidence: 98%

Haematological and serum biochemical responses of chickens to hydric stress

Chikumba

Swatson²,

Chimonyo

2013

Animal

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Dehydration can be extremely damaging to the performance and welfare of indigenous chickens. The effect of water restriction on haematological and biochemical parameters was compared in Naked Neck (NNK) and Ovambo (OVB) chickens. A total of 54 8-week-old pullets each of NNK and OVB chickens with an initial average weight of 641 6 10 g/bird were randomly assigned to three water intake treatments with three replications, each having six birds. The water restriction treatments were ad libitum, 70% and 40% of ad libitum intake. Nine experimental pens with a floor space of 3.3 m 2 per strain were used. Feed was provided ad libitum. Packed cell volume (PCV), erythrocyte count (RBC), mean corpuscular volume (MCV) and total leucocyte count (WBC), and biochemical parameters (uric acid (UA)), creatinine (CREAT), total protein (TP), albumin (ALB), globulin (GLOB), triglyceride (TGA), total cholesterol (TC), high-(HDLC) and low-(LDLC) density lipoprotein cholesterol and activity of alanine transaminase (ALT), alkaline phosphatase (ALP) and aspartate transaminase (AST) were determined from blood collected after 60 days of water restriction. PCV was higher (P , 0.05) in NNK than OVB chickens offered water ad libitum, but similar in birds offered 70% and 40% of ad libitum. There were no differences in RBC and MCV values between strains, but MCV was higher in birds on 40% than 70% of ad libitum water intake, irrespective of strain. Naked neck chickens had higher (P , 0.05) WBC values than OVB at 40% restriction level, but lower WBC than OVB at 70% water restriction level. UA, CREAT, TGA, TC, LDLC, TP and GLOB increased (P , 0.05) with each increment in water restriction, but the increase in CREAT and TC was more pronounced in OVB than NNK chickens. The opposite was observed for UA. ALT activity indicated that liver function was not affected by water restriction. It was concluded that the two strains can withstand up to 40% of ad libitum water restriction, but NNK tolerated water stress better than OVB chickens.

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Influence of sex, age, and fasting on blood parameters and body, bursa, spleen and yolk sac weights of broiler chicks

Cited by 15 publications

References 18 publications

Physiological status of broiler chicks at pulling time and the relationship to duration of holding period

Physiological status of broiler chicks at pulling time and the relationship to duration of holding period

Hematological profile of beef cattle with divergent residual feed intake, following feed deprivation

Haematological and serum biochemical responses of chickens to hydric stress

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